yao.wei
第12楼2006/06/15
石墨炉测砷没有任何问题,可看看ASTM D2972
D2972-03 Standard Test Methods for ARSENIC in Water
1. Scope
1.1 These test methods cover the photometric and atomic absorption determination of ARSENIC in most waters and wastewaters. Three test methods are given as follows: Concentration Range Sections
Test Method A-Silver Diethyldithio-carbamate Colorimetric 5 to 250 μg/L 7 to 15
Test Method B-Atomic Absorption,Hydride Generation 1 to 20 μg/L 16 to 24
Test Method C-Atomic Absorption, Graphite Furnace 5 to 100 μg/L 25 to 33