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本文选择8-羟基喹哪啶/氯仿萃取体系,在pH8.5～9.5条件下萃取分离三价铬,二苯碳酰二肼比色法测定水相中六价铬,并对影响测定结果的有关因素进行了探讨。
In this paper, 8-hydroxyquinaldine / chloroform extraction system was used to extract and separate trivalent chromium at pH8.5 ~ 9.5, and to determine hexavalent chromium in aqueous solution by diphenylcarbazide colorimetric method. Relevant factors were discussed.