ASTM D7622-10(2015)
(Test Method)Standard Test Method for Total Mercury in Crude Oil Using Combustion and Direct Cold Vapor Atomic Absorption Method with Zeeman Background Correction
Standard Test Method for Total Mercury in Crude Oil Using Combustion and Direct Cold Vapor Atomic Absorption Method with Zeeman Background Correction
SIGNIFICANCE AND USE
5.1 The emission of mercury during crude oil refining is an environmental concern. The emission of mercury may also contaminate refined products and form amalgams with metals, such as aluminum.
5.2 When representative test portions are analyzed according to this procedure, the total mercury is representative of concentrations in the sample.
SCOPE
1.1 This test method covers the procedure to determine the total mercury content in a sample of crude oil. This test method can be used for total mercury determination in natural and processed liquid and oil products (gasoline, naphtha, etc.).
1.2 This test method may be applied to samples containing between 5.0 ng/mL to 350 ng/mL of mercury. The results may be converted to mass basis.
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.4 WARNING—Mercury has been designated by many regulatory 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 and/or mercury containing products into your state or country may be prohibited by law.
1.5 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
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: D7622 − 10 (Reapproved 2015)
Standard Test Method for
Total Mercury in Crude Oil Using Combustion and Direct
Cold Vapor Atomic Absorption Method with Zeeman
1
Background Correction
This standard is issued under the fixed designation D7622; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope D4057Practice for Manual Sampling of Petroleum and
Petroleum Products
1.1 This test method covers the procedure to determine the
D4175 Terminology Relating to Petroleum, Petroleum
totalmercurycontentinasampleofcrudeoil.Thistestmethod
Products, and Lubricants
can be used for total mercury determination in natural and
D4177Practice for Automatic Sampling of Petroleum and
processed liquid and oil products (gasoline, naphtha, etc.).
Petroleum Products
1.2 This test method may be applied to samples containing
D6299Practice for Applying Statistical Quality Assurance
between5.0ng⁄mLto350ng⁄mLofmercury.Theresultsmay
and Control Charting Techniques to Evaluate Analytical
be converted to mass basis.
Measurement System Performance
1.3 The values stated in SI units are to be regarded as
D6300Practice for Determination of Precision and Bias
standard. No other units of measurement are included in this
Data for Use in Test Methods for Petroleum Products and
standard.
Lubricants
D6792Practice for Quality System in Petroleum Products
1.4 WARNING—Mercury has been designated by many
and Lubricants Testing Laboratories
regulatory agencies as a hazardous material that can cause
D7482Practice for Sampling, Storage, and Handling of
central nervous system, kidney and liver damage. Mercury, or
Hydrocarbons for Mercury Analysis
its vapor, may be hazardous to health and corrosive to
D7623Test Method for Total Mercury in Crude Oil Using
materials.Cautionshouldbetakenwhenhandlingmercuryand
Combustion-GoldAmalgamation and Cold VaporAtomic
mercury containing products. See the applicable product Ma-
Absorption Method
terial Safety Data Sheet (MSDS) for details and EPA’s
website—http://www.epa.gov/mercury/faq.htm—for addi-
3. Terminology
tional information. Users should be aware that selling mercury
and/or mercury containing products into your state or country
3.1 Fordefinitionsoftermsusedinthistestmethod,referto
may be prohibited by law.
Terminology D4175.
1.5 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
4. Summary of Test Method
responsibility of the user of this standard to establish appro-
4.1 Controlled heating following thermal decomposition of
priate safety and health practices and determine the applica-
the analysis sample in air is used to liberate mercury. The
bility of regulatory limitations prior to use.
sample is placed into the sample boat, which is inserted in the
2. Referenced Documents
first chamber of the atomizer, where the sample is heated at
2
controlled temperature at 300°C to 500°C (depending on the
2.1 ASTM Standards:
D1193Specification for Reagent Water selected operation mode). The mercury compounds are evapo-
rated and partially dissociated forming elemental mercury
1
This test method is under the jurisdiction of ASTM Committee D02 on vapor. Mercury and all decomposition products are carried to
Petroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility of
the second chamber of the atomizer heated to about 700°C to
Subcommittee D02.03 on Elemental Analysis.
750°C (mercury reduction takes place on the surface of
Current edition approved April 1, 2015. Published June 2015. Originally
ε1
heating NiCr coil, thus no catalyst is required). Mercury
approved in 2010. Last previous edition approved in 2010 as D7622–10 . DOI:
10.1520/D7622-10R15.
compounds are totally dissociated, and the organic matrix of
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
the sample is burnt out. Continuously flowing air carries
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
mercury and other combustion products through absorbance
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. analytical cell heated up to 750°C positioned in the light path
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D7622 − 10 (2015)
ofdouble-wavecoldvaporZeemanatomicabsorptionspectro- 6.4 Micropipetters, one or more units of variable volume to
photometer. The mercury resonance line 253.65nm is split to cover a range from 10µL to 250µL, NIST traceab
...
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.
´1
Designation: D7622 − 10 D7622 − 10 (Reapproved 2015)
Standard Test Method for
Total Mercury in Crude Oil Using Combustion and Direct
Cold Vapor Atomic Absorption Method with Zeeman
1
Background Correction
This standard is issued under the fixed designation D7622; 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
ε NOTE—Added missing “C” variable throughout editorially in November 2010.
1. Scope
1.1 This test method covers the procedure to determine the total mercury content in a sample of crude oil. This test method can
be used for total mercury determination in natural and processed liquid and oil products (gasoline, naphtha, etc.).
1.2 This test method may be applied to samples containing between 5.05.0 ng ⁄mL to 350350 ng ⁄ ng/mL mL of mercury. The
results may be converted to mass basis.
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.4 WARNING—Mercury has been designated by many regulatory 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 and/or mercury containing products into your state or country may be prohibited by law.
1.5 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:
D1193 Specification for Reagent Water
D4057 Practice for Manual Sampling of Petroleum and Petroleum Products
D4175 Terminology Relating to Petroleum, Petroleum Products, and Lubricants
D4177 Practice for Automatic Sampling of Petroleum and Petroleum Products
D6299 Practice for Applying Statistical Quality Assurance and Control Charting Techniques to Evaluate Analytical Measure-
ment System Performance
D6300 Practice for Determination of Precision and Bias Data for Use in Test Methods for Petroleum Products and Lubricants
D6792 Practice for Quality System in Petroleum Products and Lubricants Testing Laboratories
D7482 Practice for Sampling, Storage, and Handling of Hydrocarbons for Mercury Analysis
D7623 Test Method for Total Mercury in Crude Oil Using Combustion-Gold Amalgamation and Cold Vapor Atomic Absorption
Method
3. Terminology
3.1 For definitions of terms used in this test method, refer to Terminology D4175.
1
This test method is under the jurisdiction of ASTM Committee D02 on Petroleum Products Products, Liquid Fuels, and Lubricants and is the direct responsibility of
Subcommittee D02.03 on Elemental Analysis.
ε1
Current edition approved May 1, 2010April 1, 2015. Published July 2010June 2015. Originally approved in 2010. Last previous edition approved in 2010 as D7622 – 10 .
DOI: 10.1520/D7622-10R15.
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.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
D7622 − 10 (2015)
4. Summary of Test Method
4.1 Controlled heating following thermal decomposition of the analysis sample in air is used to liberate mercury. The sample
is placed into the sample boat, which is inserted in the first chamber of the atomizer, where the sample is heated at controlled
temperature at 300300 °C to 500°C500 °C (depending on the selected operation mode). The mercury compounds are evaporated
and partially dissociated forming elemental mercury vapor. Mercury and all decomposition products are carried to the second
chamber of the atomizer heated to about 700700 °C to 750°C750 °C (mercury reduction takes place on the surface of heating NiCr
coil, thus no catalyst
...
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