ASTM D7482-15
(Practice)Standard Practice for Sampling, Storage, and Handling of Hydrocarbons for Mercury Analysis
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.
5.3 This practice is not intended for use for liquefied samples, for which special containers may be required for pressurized samples.
5.4 This practice is only suitable for stabilized samples which remain 100 % liquid at ambient conditions. For samples that on depressurization lose some of the light hydrocarbon ends it is important to note that elemental mercury may be lost during sampling. Sampling modules which inject unstabilized liquid hydrocarbons close to process conditions directly to the mercury analyzer can be used to overcome this issue.
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.
SCOPE
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.
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 and health pract...
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Designation: D7482 − 15
Standard Practice for
Sampling, Storage, and Handling of Hydrocarbons for
1
Mercury Analysis
This standard is issued under the fixed designation D7482; 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* tion. Users should be aware that selling mercury or mercury-
containingproducts,orboth,inyourstatemaybeprohibitedby
1.1 This practice covers the types of and preparation of
state law.
containers found most suitable for the handling of hydrocarbon
1.7 This standard does not purport to address all of the
samples for the determination of total mercury.
safety concerns, if any, associated with its use. It is the
1.2 Thispracticewasdevelopedforsamplingstreamswhere
responsibility of the user of this standard to establish appro-
the mercury speciation is predominantly Hg(0) present as a
priate safety and health practices and determine the applica-
mixture of dissolved Hg(0) atoms, adsorbed Hg(0) on particu-
bility of regulatory limitations prior to use.
lates (for example, carbonaceous or mineral fines and Fe O )
2 3
and suspended droplets of metallic mercury.
2. Referenced Documents
2
1.3 The presence of suspended droplets of metallic mercury 2.1 ASTM Standards:
(often called “colloidal” mercury, since the droplet size can be D4175 Terminology Relating to Petroleum, Petroleum
very small) can make obtaining a representative sample very Products, and Lubricants
difficult for a variety of reasons (for example, non-isokinetic D7622 Test Method for Total Mercury in Crude Oil Using
sampling of the liquid can result in over- or under-collection of Combustion and Direct Cold Vapor Atomic Absorption
suspended droplets and collection of mercury that has accu- Method with Zeeman Background Correction
mulated in dense larger drops and pools on the bottom of D7623 Test Method for Total Mercury in Crude Oil Using
piping and in sample taps). Pay strict attention to the detailed Combustion-Gold Amalgamation and Cold Vapor Atomic
procedure (Section 7) to ensure representative samples are Absorption Method
3
collected. 2.2 EPA Standard:
EPA Method 1669 Sampling Ambient Water for Trace Met-
1.4 When representative test portions are collected and
als at EPA Water Quality Criteria Levels; July 1996; US
analyzed in accordance with acceptable procedures, the total
Environmental Protection Agency
mercury is representative of concentrations in the sample.
3. Terminology
1.5 The values stated in SI units are to be regarded as
standard. No other units of measurement are included in this
3.1 Definitions—For definitions of terms used in this
standard.
standard, refer to Terminology D4175.
1.6 Warning—Mercury has been designated by EPA and
3.2 Abbreviations:
many state agencies as a hazardous material that can cause
3.2.1 VOA—Volatile Organic Analysis
central nervous system, kidney, and liver damage. Mercury, or
4. Summary of Practice
its vapor, may be hazardous to health and corrosive to
materials.Cautionshouldbetakenwhenhandlingmercuryand
4.1 This practice describes the sampling, storage, transport,
mercury-containing products. See the applicable product Ma-
and handling of hydrocarbon samples used for determining
terial Safety Data Sheet (MSDS) for details and EPA’s website
mercury, and the precautions that need to be taken to prevent
(http://www.epa.gov/mercury/faq.htm) for additional informa-
sample contamination and loss of analyte.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
1
This practice is under the jurisdiction of ASTM Committee D02 on Petroleum contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Products, Liquid Fuels, and Lubricants and is the direct responsibility of Subcom- Standards volume information, refer to the standard’s Document Summary page on
mittee D02.03 on Elemental Analysis. the ASTM website.
3
Current edition approved Nov. 1, 2015. Published November 2015. Originally Available from United States Environmental Protection Agency (EPA), Ariel
approved in 2008. Last previous edition approved in 2014 as D7482 – 14. DOI: Rios Bldg., 1200 Pennsylvania Ave., NW, Washington, DC 20460 (www.epa.gov).
10.1520/D7482-15.
*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 ----------------------
D7482 − 15
5. Significance and Use 7. Sampling Procedure
5.1 This practice is intended for use in sampling liquid 7.1 Employ the normal hydrocarbon sampling procedures
hydrocarbons incl
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: D7482 − 14 D7482 − 15
Standard Practice for
Sampling, Storage, and Handling of Hydrocarbons for
1
Mercury Analysis
This standard is issued under the fixed designation D7482; 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*
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 Fe O ) and suspended
2 3
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.
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 and health practices and determine the applicability of regulatory
limitations prior to use.
2. Referenced Documents
2
2.1 ASTM Standards:
D4175 Terminology Relating to Petroleum, Petroleum Products, and Lubricants
D7622 Test Method for Total Mercury in Crude Oil Using Combustion and Direct Cold Vapor Atomic Absorption Method with
Zeeman Background Correction
D7623 Test Method for Total Mercury in Crude Oil Using Combustion-Gold Amalgamation and Cold Vapor Atomic Absorption
Method
3
2.2 EPA Standard:
EPA Method 1669 Sampling Ambient Water for Trace Metals at EPA Water Quality Criteria Levels; July 1996; US
Environmental Protection Agency
1
This practice is under the jurisdiction of ASTM Committee D02 on Petroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility of Subcommittee
D02.03 on Elemental Analysis.
Current edition approved Oct. 1, 2014Nov. 1, 2015. Published October 2014November 2015. Originally approved in 2008. Last previous edition approved in 20082014
as D7482 – 08.D7482 – 14. DOI: 10.1520/D7482-14.10.1520/D7482-15.
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 Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
3
Available from United States Environmental Protection Agency (EPA), Ariel Rios Bldg., 1200 Pennsylvania Ave., NW, Washington, DC 20460 (www.epa.gov).
*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 ----------------------
D7482 − 15
3. Terminology
3.1 Definitions—For definitions of terms used in this standard, refer to Terminology D4175.
3.2 Abbreviations:
3.2.1 VOA—Volatile Organic Analysis
4. Summary of Practice
4.1 This practice describes the sampling,
...
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