Standard Test Method for Detection of Lead in Paint and Dried Paint Films

SIGNIFICANCE AND USE
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 present in both water and solvent-reducible coatings to determine compliance.
SCOPE
1.1 This test method is intended as a screening test to determine if the solids in a paint contain more than 0.5 % lead. The test described barely detects the presence of 0.4 % but gives a definite positive result at the 0.5 % level. Note 1This test method may be used to detect the presence of lead at concentrations higher or lower than 0.5 % by making appropriate changes in the specimen size and reagent quantities specified.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.3 Paints giving an unexpected positive or questionable result should be analyzed quantitatively for lead, using Test Method D 3335.
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. Specific hazard statements are given in Section .

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ASTM D3618-05 - Standard Test Method for Detection of Lead in Paint and Dried Paint Films
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation:D3618–05
Standard Test Method for
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Detection of Lead in Paint and Dried Paint Films
This standard is issued under the fixed designation D3618; 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 extract is transferred to filter paper. Lead present is oxidized to
leadperoxidewithbrominewater,thentreatedwith“tetrabase”
1.1 This test method is intended as a screening test to
to produce a blue quinoidal salt. Known amounts of lead are
determine if the solids in a paint contain more than 0.5 % lead.
added to standard paints that are concurrently tested to provide
The test described barely detects the presence of 0.4 % but
a base for comparison.
gives a definite positive result at the 0.5 % level.
NOTE 1—This test method may be used to detect the presence of lead 4. Significance and Use
at concentrations higher or lower than 0.5 % by making appropriate
4.1 The permissible level of heavy metals in certain coat-
changes in the specimen size and reagent quantities specified.
ingsisspecifiedbygovernmentalregulatoryagencies.Thistest
1.2 The values stated in SI units are to be regarded as the
methodprovidesafullydocumentedprocedurefordetermining
standard. The values given in parentheses are for information
low concentrations of lead present in both water and solvent-
only.
reducible coatings to determine compliance.
1.3 Paints giving an unexpected positive or questionable
5. Apparatus
result should be analyzed quantitatively for lead, using Test
Method D3335.
5.1 Burner, Meker-type.
1.4 This standard does not purport to address all of the
5.2 Crucibles, porcelain, high-form, 15-mL, with covers.
safety concerns, if any, associated with its use. It is the
5.3 Filter Paper, ashless, medium texture.
responsibility of the user of this standard to establish appro-
5.4 Hot Plate, with variable surface temperature control
priate safety and health practices and determine the applica-
over the range from 70 to 200°C.
bility of regulatory limitations prior to use. Specific hazard
5.5 Muffle Furnace, maintained at 475 6 25°C.
statements are given in Section 7.
5.6 Syringe, glass, 2-mL.
5.7 Volumetric Flasks, 50, 100, 1000-mL.
2. Referenced Documents
5.8 Paint Shaker.
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2.1 ASTM Standards:
5.9 Paint Draw-Down Bar.
D1193 Specification for Reagent Water
6. Reagents
D2832 Guide for Determining Volatile and Nonvolatile
Content of Paint and Related Coatings
6.1 Purity of Reagents—Reagent grade chemicals shall be
D3335 Test Method for Low Concentrations of Lead, Cad-
used in all tests unless otherwise specified. Unless otherwise
mium, and Cobalt in Paint by Atomic Absorption Spec-
indicated, it is intended that all reagents shall conform to the
troscopy
specifications of the Committee on Analytical Reagents of the
American Chemical Society, where such specifications are
3. Summary of Test Method
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available. Other grades may be used, provided it is first
3.1 The sample of liquid paint or dried film is prepared by
ascertained that the reagent is of sufficiently high purity to
dry ashing a weighed specimen at 475 to 500°C. The ash is
permit its use without lessening the accuracy of the determi-
extracted with hot sodium hydroxide solution and a drop of the
nation.
6.2 Purity of Water—Unless otherwise indicated, references
to water shall be understood to mean reagent grade water
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This test method is under the jurisdiction of ASTM Committee D01 on Paint conforming to Type II of Specification D1193.
and Related Coatings, Materials, andApplications and is the direct responsibility of
Subcommittee D01.21 on Chemical Analysis of Paints and Paint Materials.
Current edition approved Jan. 1, 2005. Published February 2005. Originally
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approved in 1977. Last previous edition approved in 1999 as D3618 – 85a (1999). Reagent Chemicals, American Chemical Society Specifications , American
DOI: 10.1520/D3618-05. Chemical Society, Washington, DC. For suggestions on the testing of reagents not
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or listed by the American Chemical Society, see Analar Standards for Laboratory
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Chemicals, BDH Ltd., Poole, Dorset, U.K., and the United States Pharmacopeia
Standards volume information, refer to the standard’s Document Summary page on and National Formulary, U.S. Pharmacopeial Convention, Inc. (USPC), Rockville,
the ASTM website. MD.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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