催化光度法测定菊花中痕量钼  

Catalytic-Spectrophotometric Determination of Trace Molybdenum in Chrysanthemum

作　　者：周华方[1] 刘晓霞[2] 

机构地区：[1]徐州师范学院化学系,徐州221009 [2]徐州市第四人民医院,徐州221009

出　　处：《分析化学》1996年第8期940-942,共3页Chinese Journal of Analytical Chemistry

基　　金：江苏省自然科学基金

摘　　要：本文研究了在pH5．0的HAc－NaAc缓冲溶液中，钼对高碘酸钾氧化结晶紫褪色反应的反催化效应及动力学条件，建立了光度法测定银的新方法。该方法灵敏度为1．5×10－7g／L，线性范围为8～48μg／L，该方法用于中草药中钼的测定结果令人满意。A method has been established for the determination of trace molybdenum based on the catalytic-oxidational discoloration of crystal violet by potassium periodate in HAcNaAc buffcr solution(pH 5. 0). The kinetic conditions have been studied. This method has relatively high sensitivity for determining trace molybdenum in Chinese traditional medicinechrysanthemum with satisfactory results. The determination range is 8～48μg/L Mo and the sensitivity is 1． 5 ×10-7 g/L.

关 键 词：钼 催化光度法 结晶紫 菊花 

分 类 号：R284.1[医药卫生—中药学] O657.32[医药卫生—中医学]