Standard Test Methods for
Arsenic in Water1
This standard is issued under the fixed designation D2972; 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 These test methods2 cover the photometric and atomic absorption determination of arsenic in most waters and wastewaters. Three test methods are given as follows:
Test Method A—Silver Diethyldithiocarbamate Colorimetric Test Method B—Atomic Absorption, Hydride Generation Test Method C—Atomic Absorption, Graphite Furnace Concentration Range 5 to 250 µg/L 1 to 20 µg/L 5 to 100 µg/L Sections 7 to 15 16 to 24 25 to 33
1.2 The analyst should direct attention to the precision and bias statements for each test method. It is the user’s responsibility to ensure the validity of these test methods for waters of untested matrices. 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 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. For specific hazard statements, see Note 1 and Note 6.
1 These test methods are under the jurisdiction of ASTM Committee D19 on Water and are the direct responsibility of Subcommittee D19.05 on Inorganic Constituents in Water. Current edition approved Oct. 1, 2008. Published October 2008. Originally approved in 1993. Last previous edition approved in 2003 as D2972 – 03. DOI: 10.1520/D2972-08. 2 Similar to that appearing in Standard Methods for the Examination of Water and Wastewater, 12th edition,