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เอกสารมาตรฐาน
สหรัฐอเมริกา
ASTM
D5257-17
Standard Test Method for Dissolved Hexavalent Chromium in Water by Ion Chromatography
2017
8
ASTM Vol.11.01 (2023)
This test method covers procedures for the determination of dissolved hexavalent chromium in wastewater, surface water, and drinking water. The precision and bias of this test method has been tested in reagent water and industrial wastewater and has been found suitable over the range of approximately 1 to 1000 μg/L. Higher levels can be determined by appropriate dilution...