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ASTM D3335-85a(2020)

(Test Method)

Standard Test Method for Low Concentrations of Lead, Cadmium, and Cobalt in Paint by Atomic Absorption Spectroscopy

Standard Test Method for Low Concentrations of Lead, Cadmium, and Cobalt in Paint by Atomic Absorption Spectroscopy

SIGNIFICANCE AND USE
4.1 The permissible level of heavy metals in certain coatings is specified by governmental regulatory agencies. This test method provides a fully documented procedure for determining low concentrations of lead, cadmium, and cobalt present in both water and solvent-reducible coatings to determine compliance.
SCOPE
1.1 This test method covers the determination of lead2 contents between 0.01 and 5 %, cadmium contents between 50 and 150 ppm (mg/kg), and cobalt contents between 50 and 2000 ppm (mg/kg) present in the nonvolatile portion of liquid coatings or contained in dried films. There is no reason to believe that higher levels of all three elements could not be determined by this test method, provided that appropriate dilutions and adjustments in specimen size and reagent quantities are made.  
1.2 Only pigmented coatings were used for evaluating this test method, but there is no reason to believe that varnishes and lacquers could not be analyzed successfully, provided that appropriate precautions are taken.  
1.3 This test method is not applicable to the determination of lead in samples containing antimony pigments (low recoveries are obtained).  
1.4 If lead is present in the sample to be analyzed in the form of an organic lead compound at a concentration greater than 0.1 %, small losses of lead may occur, resulting in slightly poorer precision than shown in Section 12.  
1.5 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.  
1.6 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. Specific hazard statements are given in Section 7.  
1.7 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.

General Information

Status
Published
Publication Date
31-Jan-2020
ICS
87.040 - Paints and varnishes
Technical Committee
D01 - Paint and Related Coatings, Materials, and Applications
Drafting Committee
D01.21 - Chemical Analysis of Paints and Paint Materials
Current Stage
Ref Project

Relations

Referred By
ASTM D4834-03(2021) - Standard Test Method for Detection of Lead in Paint by Direct Aspiration Atomic Absorption Spectroscopy
Effective Date
01-Feb-2020
Referred By
ASTM E1583-21a - Standard Practice for Evaluating Laboratories Engaged in Determination of Lead in Paint, Dust, Airborne Particulates, and Soil Taken From and Around Buildings and Related Structures
Effective Date
01-Feb-2020
Referred By
ASTM F2097-20 - Standard Guide for Design and Evaluation of Primary Flexible Packaging for Medical Products
Effective Date
01-Feb-2020

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ASTM D3335-85a(2020) - Standard Test Method for Low Concentrations of Lead, Cadmium, and Cobalt in Paint by Atomic Absorption SpectroscopyASTM D3335-85a(2020) - Standard Test Method for Low Concentrations of Lead, Cadmium, and Cobalt in Paint by Atomic Absorption Spectroscopy
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ASTM D3335-85a(2020) - Standard Test Method for Low Concentrations of Lead, Cadmium, and Cobalt in Paint by Atomic Absorption Spectroscopy
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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.
Designation: D3335 − 85a (Reapproved 2020)
Standard Test Method for
Low Concentrations of Lead, Cadmium, and Cobalt in Paint
1
by Atomic Absorption Spectroscopy
This standard is issued under the fixed designation D3335; 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.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope 1.7 This international standard was developed in accor-
2 dance with internationally recognized principles on standard-
1.1 This test method covers the determination of lead
ization established in the Decision on Principles for the
contents between 0.01 and 5 %, cadmium contents between 50
Development of International Standards, Guides and Recom-
and 150 ppm (mg/kg), and cobalt contents between 50 and
mendations issued by the World Trade Organization Technical
2000 ppm (mg/kg) present in the nonvolatile portion of liquid
Barriers to Trade (TBT) Committee.
coatings or contained in dried films. There is no reason to
believe that higher levels of all three elements could not be
2. Referenced Documents
determined by this test method, provided that appropriate
3
2.1 ASTM Standards:
dilutions and adjustments in specimen size and reagent quan-
D1193 Specification for Reagent Water
tities are made.
D2832 GuideforDeterminingVolatileandNonvolatileCon-
1.2 Only pigmented coatings were used for evaluating this
tent of Paint and Related Coatings
test method, but there is no reason to believe that varnishes and
lacquers could not be analyzed successfully, provided that
3. Summary of Test Method
appropriate precautions are taken.
3.1 The specimen of liquid coating or dried film is prepared
1.3 This test method is not applicable to the determination
for analysis by dry ashing. The content of lead, cadmium, or
of lead in samples containing antimony pigments (low recov-
cobalt of an acid extract of the ash is determined by atomic
eries are obtained).
absorption spectroscopy.
1.4 If lead is present in the sample to be analyzed in the
4. Significance and Use
form of an organic lead compound at a concentration greater
4.1 The permissible level of heavy metals in certain coat-
than 0.1 %, small losses of lead may occur, resulting in slightly
ingsisspecifiedbygovernmentalregulatoryagencies.Thistest
poorer precision than shown in Section 12.
methodprovidesafullydocumentedprocedurefordetermining
1.5 The values stated in SI units are to be regarded as the
low concentrations of lead, cadmium, and cobalt present in
standard. The values given in parentheses are for information
both water and solvent-reducible coatings to determine com-
only.
pliance.
1.6 This standard does not purport to address all of the
5. Apparatus
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
5.1 Atomic Absorption Spectrophotometer, consisting of an
priate safety, health, and environmental practices and deter-
atomizer and either a single- or three-slot burner; gas pressure
mine the applicability of regulatory limitations prior to use.
regulating and metering devices for air and acetylene; lead,
4
Specific hazard statements are given in Section 7.
cadmium, and cobalt source lamps with a regulated constant-
current supply; a monochromator and associated optics; a
photosensitive detector connected to an electronic amplifier;
1
and a readout device.
This test method is under the jurisdiction of ASTM Committee D01 on Paint
and Related Coatings, Materials, andApplications and is the direct responsibility of
Subcommittee D01.21 on Chemical Analysis of Paints and Paint Materials.
3
Current edition approved Feb. 1, 2020. Published February 2020. Originally For referenced ASTM standards, visit the ASTM website, www.astm.org, or
approved in 1974. Last previous edition approved in 2014 as D3335 – 85a (2014). contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
DOI: 10.1520/D3335-85AR20. Standards volume information, refer to the standard’s Document Summary page on
2
Vandeberg, J. T., Swafford, H. D., and Scott, R. W., “Determination of Low the ASTM website.
4
Concentrations of Lead in Paint,” Journal of Paint Technology, Vol 47, No. 604, Both hollow cathode lamps and electrodeless discharge lamps have been found
May 1975. satisfactory for this purpose.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United Stat
...

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