ASTM D1687-12 PDF

These test methods cover the determination of hexavalent and total chromium in water. Three test methods are included:

Test Method	Concentration Range
A - Photometric Diphenyl-carbohydrazide	0.01 to 0.5 mg/L
B - Atomic Absorption, Direct	0.1 to 10 mg/L
C - Atomic Absorption - Graphite furnace	5 to 100 µg/L

Test Method A is a photometric method that measures dissolved hexavalent chromium only. Test Methods B and C are atomic absorption methods that are generally applicable to the determination of dissolved or total recoverable chromium in water without regard to valence state.

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Number of Pages :	8
Published :	09/01/2012
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