摘要
A spectrophotometric method for determination of trace molybdenum with a chromogenic reagent DMHPF was studied.In H2SO4-H3PO4 medium,molybdenum formed an orange-red 1∶2 complex with DMHPF in the presence of Triton X-100,which had absorbance maximum at 526 nm.The apparent molar absorptivity is 1.4×105L·mol-1·cm-1.Beer’ law was obeyed for molybdenum in the range of 0～10μg/25ml.Most of other metal ions do not interfere with the determination.The present method was used to determine trace molybdenum in medicinal tablets with satisfactory results.
A spectrophotometric method for determination of trace molybdenum with a chromogenic reagent DMHPF was studied.In H_2SO_4-H_3PO_4 medium,molybdenum formed an orange-red 1∶2 complex with DMHPF in the presence of Triton X-100,which had absorbance maximum at 526 nm.The apparent molar absorptivity is 1.4×10~5L·mol^(-1)·cm^(-1).Beer' law was obeyed for molybdenum in the range of 0～10μg/25ml.Most of other metal ions do not interfere with the determination.The present method was used to determine trace molybdenum in medicinal tablets with satisfactory results.
出处
《化学研究与应用》
CAS
CSCD
北大核心
2004年第1期95-96,共2页
Chemical Research and Application
