金属钒对二苯碳酰二肼分光度法测定六价铬的影响

Effect of Vanadium on Spectrophotometric Determination of Hexavalent Chromium with Diphenylcarbazide

分析了金属钒对二苯碳酰二肼分光光度法测定六价铬的影响及去除办法。实验结果表明,对于存在六价铬的溶液,金属钒的存在直接干扰了显色反应,严重影响了六价铬测定的准确性。采用阳离子H柱去除水中金属钒,简单方便,去除效果达到了98%以上。

The effect of metal vanadium on the spectrophotometric determination of hexavalent chromium with diphenylcarbazide and its removal method were analyzed.The experimental results show that for the solution with hexavalent chromium,the presence of vanadium directly interferes with the color reaction and seriously affects the accuracy of the determination of hexavalent chromium.The removal of vanadium in water by cation H column is simple and convenient,and the removal effect reaches more than 98%.