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ASTM D2650-04

(Test Method)

Standard Test Method for Chemical Composition of Gases By Mass Spectrometry

Standard Test Method for Chemical Composition of Gases By Mass Spectrometry

SIGNIFICANCE AND USE
A knowledge of the composition of refinery gases is useful in diagnosing the source of plant upsets, in determining the suitability of certain gas streams for use as fuel, or as feedstocks for polymerization and alkylation, and for monitoring the quality of commercial gases.
SCOPE
1.1 This test method covers the quantitative analysis of gases containing specific combinations of the following components: hydrogen; hydrocarbons with up to six carbon atoms per molecule; carbon monoxide; carbon dioxide; mercaptans with one or two carbon atoms per molecule; hydrogen sulfide; and air (nitrogen, oxygen, and argon). This test method cannot be used for the determination of constituents present in amounts less than 0.1 mole %. Dimethylbutanes are assumed absent unless specifically sought. Note 1Although experimental procedures described herein are uniform, calculation procedures vary with application. The following influences guide the selection of a particular calculation: qualitative mixture composition; minimum error due to components presumed absent; minimum cross interference between known components; maximum sensitivity to known components; low frequency and complexity of calibration; and type of computing machinery.
Because of these influences, a tabulation of calculation procedures recommended for stated applications is presented in Section ().Note 2
This test method was developed on Consolidated Electrodynamics Corporation Type 103 Mass Spectrometers. Users of other instruments may have to modify operating parameters and the calibration procedure.
This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

General Information

Status
Historical
Publication Date
31-Oct-2004
ICS
71.040.40 - Chemical analysis
Technical Committee
D02 - Petroleum Products, Liquid Fuels, and Lubricants
Drafting Committee
D02.04.0M - Mass Spectrometry
Current Stage
Ref Project

Relations

Replaces
ASTM D2650-99 - Standard Test Method for Chemical Composition of Gases By Mass Spectrometry
Effective Date
01-Nov-2004
Replaced By
ASTM D2650-10 - Standard Test Method for Chemical Composition of Gases By Mass Spectrometry
Effective Date
01-May-2010
Referred By
ASTM D3588-98(2017)e1 - Standard Practice for Calculating Heat Value, Compressibility Factor, and Relative Density of Gaseous Fuels
Effective Date
01-Nov-2004

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ASTM D2650-04 - Standard Test Method for Chemical Composition of Gases By Mass SpectrometryASTM D2650-04 - Standard Test Method for Chemical Composition of Gases By Mass Spectrometry
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ASTM D2650-04 - Standard Test Method for Chemical Composition of Gases By Mass Spectrometry
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Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:D2650–04
Standard Test Method for
1
Chemical Composition of Gases By Mass Spectrometry
This standard is issued under the fixed designation D2650; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope* D1137 Method for Analysis of Natural Gases and Related
3
Types of Gaseous Mixtures by the Mass Spectrometer
1.1 This test method covers the quantitative analysis of
3
D1145 Test Method for Sampling Natural Gas
gases containing specific combinations of the following com-
3
D1247 Method of Sampling Manufactured Gas
ponents: hydrogen; hydrocarbons with up to six carbon atoms
D1265 Practice for Sampling Liquefied Petroleum (LP)
per molecule; carbon monoxide; carbon dioxide; mercaptans
Gases, Manual Method
with one or two carbon atoms per molecule; hydrogen sulfide;
D1302 MethodforAnalysisofCarburetedWaterGasbythe
and air (nitrogen, oxygen, and argon). This test method cannot
3
Mass Spectrometer
be used for the determination of constituents present in
amounts less than 0.1 mole %. Dimethylbutanes are assumed
3. Terminology
absent unless specifically sought.
3.1 Definitions:
NOTE 1—Although experimental procedures described herein are uni-
3.1.1 base peak of a compound—the peak used as 100 % in
form, calculation procedures vary with application. The following influ-
computing the cracking pattern coefficient.
ences guide the selection of a particular calculation: qualitative mixture
3.1.2 cracked gases—hydrocarbon gases that contain unsat-
composition; minimum error due to components presumed absent; mini-
urates.
mum cross interference between known components; maximum sensitiv-
3.1.3 cracking pattern coeffıcient—the ratio of a peak at any
ity to known components; low frequency and complexity of calibration;
and type of computing machinery. m/e relative to its parent peak (or in some cases its base peak).
Because of these influences, a tabulation of calculation procedures
3.1.4 GLC—a gas-liquid chromatographic column that is
recommended for stated applications is presented in Section 12 (Table 1).
capable of separating the isomers of butenes, pentenes, hex-
NOTE 2—This test method was developed on Consolidated Electrody-
anes, and hexenes.
namics Corporation Type 103 Mass Spectrometers. Users of other
3.1.5 IR—infrared equipment capable of analyzing gases
instruments may have to modify operating parameters and the calibration
for the butene isomers.
procedure.
3.1.6 mass number or m/e value of an ion—the quotient of
1.2 This standard does not purport to address all of the
the mass of that ion (given in atomic mass units) and its
safety concerns, if any, associated with its use. It is the
positive charge (number of electrons lost during ionization).
responsibility of the user of this standard to establish appro-
3.1.7 parent peak of a compound—the peak at which the
priate safety and health practices and determine the applica-
m/e is equal to the sum of the atomic mass values for that
bility of regulatory limitations prior to use.
compound. This peak is sometimes used as 100 % in comput-
ing the cracking pattern coefficients.
2. Referenced Documents
3.1.8 partial pressure—the pressure of any component in
2
2.1 ASTM Standards:
the inlet system before opening the expansion bottle to leak.
3.1.9 sensitivity—the height of any peak in the spectrum of
1
the pure compound divided by the pressure prevailing in the
This test method is under the jurisdiction of ASTM Committee D02 on
Petroleum Products and Lubricants and is the direct responsibility of Subcommittee inlet system of the mass spectrometer immediately before
D02.04 on Hydrocarbon Analysis.
opening the expansion bottle to leak.
Current edition approved Nov. 1, 2004. Published November 2004. Originally
3.1.10 straight-run gases—hydrocarbon gases that do not
approved in 1967. Last previous edition approved in 1999 as D2650–99. DOI:
contain unsaturates.
10.1520/D2650-04.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
3
Standards volume information, refer to the standard’s Document Summary page on Withdrawn. The last approved version of this historical standard is referenced
the ASTM website. on www.astm.org.
*A Summary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
D2650–04
TABLE 1 Calculation Procedures for Mass Spectrometer Gas Analysis
NOTE—Coding of calculation proc
...

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5.1 New and used petroleum products can contain basic constituents that are present as additives. The relative amount of these materials can be determined by titration with acids. The base number is a measure of the amount of basic substances in the oil always under the conditions of the test. It is sometimes used as a measure of lubricant degradation in service. However, any condemning limit shall be empirically established.  
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5.3 Particular care is required in the interpretation of the base number of new and used lubricants.  
5.3.1 When the base number of the new oil is required as an expression of its manufactured quality, Test Method D2896 is preferred, since it is known to titrate weak bases that this test method may or may not titrate reliably.  
5.3.2 When the base number of in-service or at-term oil is required, this test method is preferred because in many cases, especially for internal combustion engine oils, weakly basic degradation products are possible. Test Method D2896 will titrate these, thu...
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1.1 This test method covers a procedure for the determination of basic constituents in petroleum products and new and used lubricants. This test method resolves these constituents into groups having weak-base and strong-base ionization properties, provided the dissociation constants of the more strongly basic compounds are at least 1000 times than that of the next weaker groups. This test method covers base numbers up to 250.  
1.2 In new and used lubricants, the constituents that can be considered to have basic properties are primarily organic and inorganic bases, including amino compounds. This test method uses hydrochloric acid as the titrant, whereas Test Method D2896 uses perchloric acid as the titrant. This test method may or may not titrate these weak bases and, if so, it will titrate them to a lesser degree of completion; some additives such as inhibitors or detergents may show basic characteristics.  
1.3 When testing used engine lubricants, it should be recognized that certain weak bases are the result of the service rather than having been built into the oil. This test method can be used to indicate relative changes that occur in oil during use under oxidizing or other service conditions regardless of the color or other properties of the resulting oil. The values obtained, however, are intended to be compared with the other values obtained by this test method only; base numbers obtained by this test method are not intended to be equal to values by other test methods. Although the analysis is made under closely specified conditions, this test method is not intended to, and does not, result in reported basic properties that can be used under all service conditions to predict performance of an oil; for example, no overall relationship is known between bearing corrosion or the control of corrosive wear in the engine and base number.  
1.4 This test method was developed as an alternative for the former base numb...

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Standard Test Method for Semi-Quantitative Field Test Method for Base Number in New and Used Lubricants by Color-Indicator Titration

SIGNIFICANCE AND USE
5.1 New and used petroleum products can contain basic constituents that are present as additives or as degradation products formed during service. The amount of these additives in an oil can be determined by titrating against an acid. The base number is a measure of the amount of basic substance in the oil, always under the conditions of the test. A decrease in base number is often used as a measure of lubricant degradation, but any condemning limits must be empirically established.  
5.2 This test method uses reagents that are considered less hazardous than most reagents used in alternate base number methods. It uses pre-packaged reagents to facilitate base number determinations in the field where scientific equipment is unavailable and quick results are at a premium.
Note 1: Results obtained by this test method3 are similar to those obtained by Test Method D2896.
SCOPE
1.1 This test method covers a procedure for determining the basic constituents in petroleum products in the field or laboratory using a pre-packaged test kit. The test uses a micro-titration resulting in a visual endpoint facilitated by a color indicator.  
1.1.1 This test method covers base numbers from 0 to 20. It can be extended to higher ranges by diluting the sample or by using a smaller sample size; however, the precision data were obtained for base numbers up to 20.  
1.2 This test method can be used to indicate relative changes that occur in an oil during use under oxidizing conditions. Although the test is performed under closely specified conditions with standardized reagents, the test method does not measure an absolute basic property that can be used to predict performance of an oil under service conditions. No general relationship between bearing corrosion and base number is known.  
1.3 The values stated in SI units are to be regarded as the standard.  
1.3.1 Exception—The values given in parentheses are for information only.  
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ASTM D7482-17(2023)(Practice)
Standard Practice for Sampling, Storage, and Handling of Hydrocarbons for Mercury Analysis

SIGNIFICANCE AND USE
5.1 This practice is intended for use in sampling liquid hydrocarbons including crude oils, condensates, refinery process intermediates, and refined products. Generally these samples are expected to contain mercury from the parts per billion (10–9 mass) to parts per million (10–6 mass) range.  
5.2 This practice is not intended for use when sampling aqueous systems where the concentrations of mercury are often in the parts per trillion (10–12 mass) range. These samples are often better addressed by using the rigorously clean techniques from the EPA Method 1669 “clean hands, dirty hands” sampling procedures.  
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5.5 Based on this practice, two Test Methods (D7622 and D7623) are available for determination of mercury in crude oil, based on cold vapor atomic absorption technique.  
5.6 In some refined streams and in tank samples free water may be present. Process streams that are water saturated may condense water as the sample cools from process temperature to ambient temperature. Ionic mercury species are water soluble and these water droplets may contain mercury or adsorb mercury over time.  
5.7 The presence of mercury during crude oil production, transport, and refining can be an environmental and industrial hygiene concern.
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1.1 This practice covers the types of and preparation of containers found most suitable for the handling of hydrocarbon samples for the determination of total mercury.  
1.2 This practice was developed for sampling streams where the mercury speciation is predominantly Hg(0) present as a mixture of dissolved Hg(0) atoms, adsorbed Hg(0) on particulates (for example, carbonaceous or mineral fines and Fe2O3) and suspended droplets of metallic mercury.  
1.3 The presence of suspended droplets of metallic mercury (often called “colloidal” mercury, since the droplet size can be very small) can make obtaining a representative sample very difficult for a variety of reasons (for example, non-isokinetic sampling of the liquid can result in over- or under-collection of suspended droplets and collection of mercury that has accumulated in dense larger drops and pools on the bottom of piping and in sample taps). Pay strict attention to the detailed procedure (Section 7) to ensure representative samples are collected.  
1.4 When representative test portions are collected and analyzed in accordance with acceptable procedures, the total mercury is representative of concentrations in the sample.  
1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.6 Warning—Mercury has been designated by EPA and many state agencies as a hazardous material that can cause central nervous system, kidney, and liver damage. Mercury, or its vapor, may be hazardous to health and corrosive to materials. Caution should be taken when handling mercury and mercury-containing products. See the applicable product Material Safety Data Sheet (MSDS) for details and EPA’s website (http://www.epa.gov/mercury/faq.htm) for additional information. Users should be aware that selling mercury or mercury-containing products, or both, in your state may be prohibited by state law.  
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Standard Test Method for Hydrocarbon Types, Oxygenated Compounds, Benzene, and Toluene in Spark Ignition Engine Fuels by Multidimensional Gas Chromatography

SIGNIFICANCE AND USE
5.1 A knowledge of spark-ignition engine fuel composition is useful for regulatory compliance, process control, and quality assurance.  
5.2 The quantitative determination of olefins and other hydrocarbon types in spark-ignition engine fuels is required to comply with government regulations.  
5.3 This test method is not applicable to M85 fuels, which contain 85 % methanol.
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1.1 This test method covers the quantitative determination of saturates, olefins, aromatics, and oxygenates in spark-ignition engine fuels by multidimensional gas chromatography. Each hydrocarbon type can be reported either by carbon number (see Note 1) or as a total.
Note 1: There can be an overlap between the C9 and C10 aromatics; however, the total is accurate. Isopropyl benzene is resolved from the C8 aromatics and is included with the other C9 aromatics.  
1.2 This test method is not intended to determine individual hydrocarbon components except benzene and toluene.  
1.3 This test method is divided into two parts, Part A and Part B.  
1.3.1 Part A is applicable to the concentration ranges for which precision (Table 10 and Table 11) has been obtained:    
Property  
Units  
Applicable range  
Total aromatics  
Volume %  
19.32 to 46.29  
Total saturates  
Volume %  
26.85 to 79.31  
Total olefins  
Volume %  
0.40 to 26.85  
Oxygenates  
Volume %  
0.61 to 9.85  
Oxygen Content  
Mass %  
2.01 to 12.32  
Benzene  
Volume %  
0.38 to 1.98  
Toluene  
Volume %  
5.85 to 31.65  
Methanol  
Volume %  
1.05 to 16.96  
Ethanol  
Volume %  
0.50 to 17.86  
MTBE  
Volume %  
0.99 to 15.70  
ETBE  
Volume %  
0.99 to 15.49  
TAME  
Volume %  
0.99 to 5.92  
TAEE  
Volume %  
0.98 to 15.59
1.3.1.1 This test method is specifically developed for the analysis of automotive motor gasoline that contains oxygenates, but it also applies to other hydrocarbon streams having similar boiling ranges, such as naphthas and reformates.  
1.3.2 Part B describes the procedure for the analysis of oxygenated groups (ethanol, methanol, ethers, C3 to C5 alcohols) in ethanol fuels containing an ethanol volume fraction between 50 % and 85 % (17 % to 29 % oxygen). The gasoline is diluted with an oxygenate-free component to lower the ethanol content to a value below 20 % before the analysis by GC. The diluting solvent should not be considered in the integration, this makes it possible to report the results of the undiluted sample after normalization to 100 %.  
1.4 Oxygenates as specified in Test Method D4815 have been verified not to interfere with hydrocarbons. Within the round robin sample set, the following oxygenates have been tested: MTBE, ethanol, ETBE, TAME, iso-propanol, isobutanol, tert-butanol and methanol. Applicability of this test method has also been verified for the determination of n-propanol, acetone, and di-isopropyl ether (DIPE). However, no precision data have been determined for these compounds.  
1.4.1 Other oxygenates can be determined and quantified using Test Method D4815 or D5599.  
1.5 The method is harmonized with ISO 22854.  
1.6 This test method includes a relative bias section for U.S. EPA spark-ignition engine fuel regulations for total olefins reporting based on Practice D6708 accuracy assessment between Test Method D6839 and Test Method D1319 as a possible Test Method D6839 alternative to Test Method D1319. The Practice D6708 derived correlation equation is only applicable for fuels in the total olefins concentration range from 0.2 % to 18.2 % by volume as measured by Test Method D6839. The applicable Test Method D1319 range for total olefins is from 0.6 % to 20.6 % by volume as reported by Test Method D1319.  
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ASTM D2650-10(2021)(Test Method)
Standard Test Method for Chemical Composition of Gases by Mass Spectrometry

SIGNIFICANCE AND USE
5.1 A knowledge of the composition of refinery gases is useful in diagnosing the source of plant upsets, in determining the suitability of certain gas streams for use as fuel, or as feedstocks for polymerization and alkylation, and for monitoring the quality of commercial gases.
SCOPE
1.1 This test method covers the quantitative analysis of gases containing specific combinations of the following components: hydrogen; hydrocarbons with up to six carbon atoms per molecule; carbon monoxide; carbon dioxide; mercaptans with one or two carbon atoms per molecule; hydrogen sulfide; and air (nitrogen, oxygen, and argon). This test method cannot be used for the determination of constituents present in amounts less than 0.1 mole %. Dimethylbutanes are assumed absent unless specifically sought.
Note 1: Although experimental procedures described herein are uniform, calculation procedures vary with application. The following influences guide the selection of a particular calculation: qualitative mixture composition; minimum error due to components presumed absent; minimum cross interference between known components; maximum sensitivity to known components; low frequency and complexity of calibration; and type of computing machinery.
Because of these influences, a tabulation of calculation procedures recommended for stated applications is presented in Section 12 (Table 1).    
Serial No. . . . . . . . . . .  
7  
8  
9  
10  
11  
12  
13  
Name or Application  
Commercial
Propane  
Commercial
Butane  
BB Stream
(Cracked
Butanes)  
Dry Gas
Cracked
Fuel Gas  
Mixed Iso
and Normal
Butanes  
Reformer
Make-Up
Gas  
Unstabi-
lized Fuel
Gas  
Component  
O  
P  
M  
O  
P  
M  
OC  
PC  
M  
O  
P  
M  
O  
P  
M  
O  
P  
M  
OC  
PC  
M  
Hydrogen  
...  
...  
...  
...  
...  
...  
...  
...  
...  
15  
2  
M  
...  
...  
...  
10  
2  
M  
16  
2  
M  
Methane  
...  
...  
...  
...  
...  
...  
...  
...  
...  
14  
16  
M  
...  
...  
...  
9  
16  
M  
15  
16  
M  
EthyleneE  
7  
26  
M  
...  
...  
...  
...  
...  
...  
12  
26  
M  
...  
...  
...  
...  
...  
...  
13  
26  
M  
Ethane  
6  
30  
M  
...  
...  
...  
...  
...  
...  
11  
30  
M  
...  
...  
...  
7  
30  
M  
12  
30  
M  
Propene  
5  
42  
M  
7  
42  
M  
6  
42  
M  
10  
42  
M  
...  
...  
...  
...  
...  
...  
8  
42  
M  
Propane  
3  
44  
M  
4  
44  
M  
4  
44  
M  
7  
44  
M  
3  
44  
M  
5  
44  
M  
6  
44  
M  
Butadiene  
...  
...  
...  
...  
...  
...  
1  
54  
M  
3  
54  
M  
...  
...  
...  
...  
...  
...  
2  
54  
M  
Butene-1  
1  
56  
M  
1  
56  
M  
7  
41  
M  
1  
...  
...  
...  
...  
...  
...  
...  
...  
9  
41  
M  
Butene-2  
1  
56  
M  
1  
56  
M  
8  
56  
M  
1  
56  
M  
...  
...  
...  
...  
...  
...  
10  
56  
M  
Isobutene  
1F  
F  
M  
1  
F  
F  
9  
39  
M  
1  
F  
...  
4  
43  
M  
...  
...  
...  
11  
39  
M  
Isobutane  
4  
43  
M  
5  
43  
M  
5  
43  
M  
8  
43  
M  
1  
58  
M  
6  
43  
M  
7  
43  
M  
n-Butane  
2  
58  
M  
2  
58  
M  
2  
58  
M  
4  
58  
M  
...  
...  
...  
2  
58  
M  
3  
58  
M  
Pentenes  
...  
...  
...  
6  
70  
M  
G  
70  
U  
9  
70  
M  
...  
...  
...  
3  
57  
M  
...  
70  
U  
Isopentane  
...  
...  
...  
3  
57  
M  
3  
57  
M  
5  
57  
M  
2  
57  
M  
4  
72  
M  
4  
57  
M  
n-Pentane  
...  
...  
...  
...  
...  
...  
...  
...  
...  
6  
72  
M  
...  
...  
...  
...  
...  
...  
5  
72  
M  
Benzene  
...  
...  
...  
...  
...  ...

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ASTM D7579-09(2019)(Test Method)
Standard Test Method for Pyrolysis Solids Content in Pyrolysis Liquids by Filtration of Solids in Methanol

SIGNIFICANCE AND USE
5.1 Pyrolysis liquid can be produced to various char concentrations. Increasing pyrolysis solids content can affect the pyrolysis liquid biofuel handling, atomization and storage stability in a negative manner.
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1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. Material Safety Data Sheets are available for reagents and materials. Review them for hazards prior to usage. For specific warning statements, see 7.2, 7.3, and 7.4.  
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ASTM D7959-19(Test Method)
Standard Test Method for Chloride Content Determination of Aviation Turbine Fuels using Chloride Test Strip

SIGNIFICANCE AND USE
4.1 Chloride present in aviation turbine fuel can originate from refinery salt drier carryover or possibly from seawater contamination (for example, product transferred by barge). Elevated chloride levels have caused corrosive and abrasive wear of aircraft fuel control systems leading to engine failure.4
SCOPE
1.1 This test method covers a rapid means of determining chloride content of aviation turbine fuel. This methodology is applicable for chloride concentrations between 0 mg/L to 0.5 mg/L. This methodology will not detect chlorine originating from chlorinated organic compounds (that is, covalent bond).  
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

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ASTM
ASTM D7318-19e1(Test Method)
Standard Test Method for Existent Inorganic Sulfate in Ethanol by Potentiometric Titration

SIGNIFICANCE AND USE
5.1 Ethanol is used as a blending agent added to gasoline. Sulfates are indicated in filter plugging deposits and fuel injector deposits. When fuel ethanol is burned, sulfates may contribute to sulfuric acid emissions. Ethanol acceptability for use depends on the sulfate content. Sulfate content, as measured by this test method, can be used as one measure of determination of the acceptability of ethanol for automotive spark-ignition engine fuel use.
SCOPE
1.1 This test method covers a potentiometric titration procedure for determining the existent inorganic sulfate content of hydrous, anhydrous ethanol, and anhydrous denatured ethanol, which is added as a blending agent with spark ignition fuels. It is intended for the analysis of denatured ethanol samples containing between 1.0 mg/kg to 20 mg/kg existent inorganic sulfate.  
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. Material Safety Data Sheets are available for reagents and materials. Review them for hazards prior to usage.  
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

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ASTM
ASTM E2160-23(Test Method)
Standard Test Method for Heat of Reaction of Thermally Reactive Materials by Differential Scanning Calorimetry

SIGNIFICANCE AND USE
5.1 This test method is useful in determining the extrapolated onset temperature, the peak heat flow temperature and the heat of reaction of a material. Any onset temperature determined by this test method is not valid for use as the sole information used for determination of storage or processing conditions.  
5.2 This test method is useful in determining the fraction of a reaction that has been completed in a sample prior to testing. This fraction of reaction that has been completed can be a measure of the degree of cure of a thermally reactive polymer or can be a measure of decomposition of a thermally reactive material upon aging.  
5.3 The heat of reaction values may be used in Practice E1231 to determine hazard potential figures-of-merit Explosion Potential and Shock Sensitivity.  
5.4 This test method may be used in research, process control, quality assurance, and specification acceptance.
SCOPE
1.1 This test method determines the exothermic heat of reaction of thermally reactive chemicals or chemical mixtures, using milligram specimen sizes, by differential scanning calorimetry. Such reactive materials may include thermally unstable or thermoset materials.  
1.2 This test method also determines the extrapolated onset temperature and peak heat flow temperature for the exothermic reaction.  
1.3 This test method may be performed on solids, liquids or slurries.  
1.4 The applicable temperature range of this test method is 25 °C to 600 °C.  
1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.6 This standard is related to Test Method E537, but provides additional information.  
1.7 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.8 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

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ASTM
ASTM D5544-16(2023)(Test Method)
Standard Test Method for On-Line Measurement of Residue After Evaporation of High-Purity Water

SIGNIFICANCE AND USE
5.1 Even so-called high-purity water will contain contaminants. While not always present, these contaminants may contribute one or more of the following: dissolved active ionic substances such as calcium, magnesium, sodium, potassium, manganese, ammonium, bicarbonates, sulfates, nitrates, chloride and fluoride ions, ferric and ferrous ions, and silicates; dissolved organic substances such as pesticides, herbicides, plasticizers, styrene monomers, deionization resin material; and colloidal suspensions such as silica. While this test method facilitates the monitoring of these contaminants in high-purity water, in real time, with one instrument, this test method is not capable of identifying the various sources of residue contamination or detecting dissolved gases or suspended particles.  
5.2 This test method is calibrated using weighed amounts of an artificial contaminant (potassium chloride). The density of potassium chloride is reasonably typical of contaminants found in high-purity water; however, the response of this test method is clearly based on a response to potassium chloride. The response to actual contaminants found in high-purity water may differ from the test method's calibration. This test method is not different from many other analytical test methods in this respect.  
5.3 Together with other monitoring methods, this test method is useful for diagnosing sources of RAE in ultra-pure water systems. In particular, this test method can be used to detect leakages such as colloidal silica breakthrough from the effluent of a primary anion or mixed-bed deionizer. In addition, this test method has been used to measure the rinse-up time for new liquid filters and has been adapted for batch-type sampling (this adaptation is not described in this test method).  
5.4 Obtaining an immediate indication of contamination in high-purity water has significance to those industries using high-purity water for manufacturing components; production can be halted immediate...
SCOPE
1.1 This test method covers the determination of dissolved organic and inorganic matter and colloidal material found in high-purity water used in the semiconductor, and related industries. This material is referred to as residue after evaporation (RAE). The range of the test method is from 0.001 μg/L (ppb) to 60 μg/L (ppb).  
1.2 This test method uses a continuous, real time monitoring technique to measure the concentration of RAE. A pressurized sample of high-purity water is supplied to the test method's apparatus continuously through ultra-clean fittings and tubing. Contaminants from the atmosphere are therefore prevented from entering the sample. General information on the test method and a literature review on the continuous measurement of RAE has been published.2  
1.3 The values stated in SI units are to be regarded as standard. The values given in parentheses are mathematical conversions to inch-pound units that are provided for information only and are not considered standard.  
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. For specific hazards statements, see Section 8.  
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

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