摘要
根据Cu(Ⅱ)与α,β,Υ,δ—四(对磺基苯)卟啉生成配合物使试剂荧光熄灭的原理测定了微量铜。在CTMAB和TritonX—100存在下,方法灵敏度为0.005μg/ml。测定了铁粉、氧化铁及一些标准钢样中铜的含量。
Determination of microamount copper by fluorescence quenching method has been investigated based on complex formation of Cu (Ⅱ) with meso-tetra (p-sulfophenyl) orphyrin.In the presence of CTMAB and Triton X-100 the sensitivity of the method proposed is 0.005μg/ml. When NaF is used as a masking agent, 1 mg of Fe (Ⅲ) does not interfere with the determination of Cu (Ⅱ). The contents of Cu in the powdered iron, iron oxide and standard steel samples are determined with satisfactory results.
出处
《分析化学》
SCIE
EI
CAS
CSCD
北大核心
1989年第8期746-749,共4页
Chinese Journal of Analytical Chemistry
