摘要
研究了用Ｃｒ（Ⅵ）－二苯碳酰二胼体系测定尿液中微量铬的流动注射标准加入法，处理后的含铬试样作载流，Ｃｒ（Ⅵ）标准液从进样阀加入载流中。工作曲线和样品测定条件完全一致，消除了未知基体的干扰。分析结果的变异系数为１．７３％～３．６６％，加标回收率为９７．２％～１０６．０％．
This paper presents a methed of determination of chromium in the urine withflowinJection standard addition methed for the reaction between Cr(Ⅵ)and l,5-diphenylcarbazlueis studied.The treated sample is used as stream. The sta ndard solution of Cr(Ⅵ)is injected fromthe sample valve. The relative standard deviation is 1.73%～3.66%and the recovery rate ofchromium is 97.2%～106.0%.The current system has a simple,rapid,accurate feature and nu-merous potential applications for qua ntitative studies of trace analysis of chromium in the en viron-mental sample.
关键词
流动注射标准加入法
尿铬
二苯碳酰二胼
环境保护
flowinjection standard addition method,chromium in the urine,1.5-diphenylcarbazide,environmental protection
