摘要
在色谱膜池中，用１．０ｍｏｌ／ＬＨＮＯ３溶液吸收富集空气中的镍、铜、铅和镉，以８－羟基喹啉络合物吸附阴极溶出伏安法测定其含量。在ｐＨ７．５０的醋酸铵溶液中，８－羟基喹啉与镍、铜、铅及镉络合物的峰电位分别为－０．３８、－０．５２、－０．６２和－０．８０Ｖ，线性范围分别为０．５～３００、０．３～５０、０．０８～１００和０．０２～１００ｎｍｏｌ／Ｌ。
Nickel, copper, lead and cadmium in air samples were captured and enriched in a chro_matomembrane cell with 1.0 mol·L-1 HNO3 solution. The metallic ions were then determined by adsorptive cathodic stripping voltammetry. In a pH 7.50 buffer solutoin containing 1.0×10-4 mol·L-1 8 _ hydroxyquinoline (Ox),the nickel,copper,lead and cadmium complexes with Ox gave sensitive stripping voltammetric peaks at -0.38,-0.52,-0.62 and -0.80 V,respectively. The linear ranges for these complexes are 0.5～300, 0.3～50, 0.08～100, and 0.02～100 nmol·L-1, respectively.
出处
《分析测试学报》
CAS
CSCD
1999年第1期72-75,共4页
Journal of Instrumental Analysis
关键词
色谱膜法
溶出伏安法
镍
铅
镉
铜
空气
测定
Chromatomembrane, Stripping voltammetry, Nickel, Copper, Lead,Cadmium
