LIU Fang1, GUO Zhi-hui1, ZHENG Xing-wang1. Research on chromium(Ⅵ)sensor with silver nanoparticles modified graphite electrode[J]. 2009, 28(1): 16-17+21.
LIU Fang1, GUO Zhi-hui1, ZHENG Xing-wang1. Research on chromium(Ⅵ)sensor with silver nanoparticles modified graphite electrode[J]. 2009, 28(1): 16-17+21. DOI: 10.13873/j.1000-97872009.01.017.
基于纳米银修饰电极的电位型铬(Ⅵ)传感器研究
摘要
纳米银修饰过的石墨电极在铬酸盐溶液中活化处理后
可制成一种新型的电位型铬传感器。将该传感器用于铬(Ⅵ)的测定
实验结果表明:此传感器对铬(Ⅵ)具有灵敏的电位响应
其线性范围较宽
为1.0×10-7
1
.0×10-2mol.L-1
检出限为4×10-8mol.L-1。应用于水样中铬(Ⅵ)的测定
结果符合分析要求。
Abstract
After being activated in the chromate solution
silver nanoparticles modified graphite electrodes can be used to make a new type of the potential sensor of chromium(Ⅵ).The result of the experiment in which the sensor is used to determine chromium(Ⅵ)shows that the modified electrode has a sensitive potential response to chromium(Ⅵ).It has a wide linear range of 1.0×10-7~1.0×10-2mol·L-1
and the detection limit is 4×10-8mol·L-1.The electrode is used for determining chromium(Ⅵ)in water
and the results can meet the analysis requirements.