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。
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^-2 mol · L^-1 ,and the detection limit is 4 × 10^-8 mol· L^-1. The electrode is used for determining chromium（Ⅵ） in water, and the results can meet the analysis requirements.
出处
《传感器与微系统》
CSCD
北大核心
2009年第1期16-17,21,共3页
Transducer and Microsystem Technologies
关键词
纳米银
修饰电极
电位型传感器
铬(Ⅵ)
silver nanoparticles
modified electrode
potential sensor
chromium（Ⅵ）
