摘要
钴（Ⅱ）在ＨＡｃ－ＮａＮＯ＿２－吐温－８０－ＮＰＴＳＱ体系中有一灵敏的阴极极化导数波，其峰电位－１．００Ｖ（ｖｓ．ＳＣＥ），钴浓度在４．０×１０￣（－９）～３．０×１０￣（－７）ｇ／ｍＬ范围内与峰电流有良好的线性关系。本文讨论了测定钴（Ⅱ）的最佳实验条件，对极谱波的性质进行了初步探讨，并作了维生素Ｂ＿（１２）中钴的测定，测定结果的相对标准偏差为３．７４％，回收率为９６～１０８％。
The derivative catalytic polarographicdetermination of Co(Ⅱ)with the HAc-NaNO_2-Tween-80-NPTSQ system was stud-ied.The linear range of calibration is 4.0×10￣(-9)～3.0×10￣(-7)g/mL. The peak potentialis-1.00V (vs.SCE).The Character of thecatalytic wave was discussed and Co(Ⅱ)invitamin B_(12) was determined.
出处
《分析试验室》
CSCD
北大核心
1995年第2期26-28,36,共4页
Chinese Journal of Analysis Laboratory
关键词
钴
喹啉
极谱法
NPTSQ
配合物
Cobalt
5-(4-nitro-pheny-lazo )-8-(4-toluenesulfonamido )-quinoline
Polarography
