直接快速极谱法测定生物样品中的痕量铬  

Study on the quick determination of trace chromium(Ⅵ) in biological samples by polarography

作　　者：高桂兰[1] 严规有[2] 胡忠斌[2] 

机构地区：[1]上海第二工业大学城市建设与环境工程学院,上海201209 [2]中南大学化学化工学院,长沙410083

出　　处：《分析试验室》2010年第7期59-61,共3页Chinese Journal of Analysis Laboratory

摘　　要：报道了在亚硝酸钠-2,2′-联吡啶-溴化十六烷基三甲铵(CTMAB)中铬(Ⅵ)的极谱催化波。在0.24mol/LNaNO2-4×10-5mol/L2,2′-联吡啶-1.6×10-5mol/LCTMAB(pH8.0)底液中,极谱催化波峰电位EP=-1.39V(vs.SCE),其峰电流与铬(Ⅵ)浓度在0～20ng/mL范围内有良好的线性关系。方法可用于测定生物样猪肝及猪肾中痕量铬(Ⅵ)。对极谱波的性质进行了初步探讨。A polarographic catalytic wave of chromium(Ⅵ) was reported in the presence of NaNO2-2,2 -Bipyridyl-CTMAB. In the solution containing 0.24 mol/L NaNO2-4×10-5 mol/L 2,2 -Bipyridyl-1.6×10-5 mol/L CTMAB (pH 8.0),the polarographic catalytic wave was observed. The second-order derivative peak potential was at-1.39 V (vs. SCE) and the peak current was linearly proportional to the concentration of chromium(Ⅵ) in the range of 0～20 ng/mL. The method was proved to be sensitive,simple and rapid. The method was applied ...

关 键 词：生物样 铬(Ⅵ) 极谱催化波 

分 类 号：O657.14[理学—分析化学]