摘要
本文采用三电极系统（工作电极：玻碳电极；参比电极：甘汞电极；辅助电极：铂电极）研究了Pr（Ⅲ）－ALC－F体系吸附波的特性。在pH＝1．0的六次甲基四胺、硝酸溶液中，峰电位Ep＝-0.66V（vs．SCE）处，峰电流与F浓度在1×10－7至1×10－5mol／L范围内呈线性关系，检出限为：8×10－8mol／L，精密度为；0．7％。本法适用于各种样品的分析，具有灵敏度高，抗干扰能力强，试验简便无毒的特点。用该方法测定了地下水中的氟离子，结果令人满意。
In the solution of (CH3 )6N4 and HNO3, (pH= 1.1),the absorption wave of Pr (N ) -ALC-F-occurs at 0. 66V(vs. SCE) in the voltammeter by the three electrodes system. In the optimum conditions, the wave height is proportional to the concentration of F- in the range of 1 X 10 7 to 1 X 10-5 mol /L. the detection limit of F- is 8 X 10-8mol/L. RSD is 1. 7%. The method has been used to determine F in the ground water and rock samples with satisfactory results. There are advantages such as height sensitivity,good accuracy,antiinterference and no poisoning in this method.
出处
《环境科学与技术》
CAS
CSCD
北大核心
2000年第1期47-49,共3页
Environmental Science & Technology
基金
国家自然科学基金!49832005
