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Position: Home > Articles > Simutaneous Determination of Microamounts of Zn、Fe、Mn in Arimillaria Mellea by Single Sweep Polarography FOOD SCIENCE 2004,25 (8) 149-152

单扫描示波极谱法连续测定榛蘑中的锌、铁、锰

作  者:
李巧云;陈爱英;居红芳;季海燕
单  位:
常熟理工学院化学系
关键词:
示波极谱法;锌;铁;锰;榛蘑
摘  要:
本文对单扫描示波极谱法同时测定榛蘑中的锌、铁、锰微量元素的含量进行了研究,选用0.4mol/L乙二胺—2.5×10-3mol/L三乙醇胺—0.1mol/L硫氰酸钾为底液。锌、铁、锰峰电位分别为-1.46V、-1.69V、-1.78V(υs.SCE),线性范围:0.2~1.2μg/ml Zn、0.2~1.6μg/ml Fe、0.04~0.5μg/ml Mn,锌、铁、锰的检出限分别为0.015μg/ml、0.024μg/ml、0.018μg/ml,回收率为96.6%~103.3%。此方法准确、简便、快速、灵敏度高。
译  名:
Simutaneous Determination of Microamounts of Zn、Fe、Mn in Arimillaria Mellea by Single Sweep Polarography
作  者:
LI Qiao-yun,CHEN Ai-ying,JU Hong-fang,JI Hai-yan(Department of Chemistry, Changshu Science and Technology College, Changshu 215500, China)
关键词:
single sweep polarography;zinc;iron;manganese;arimillaria mellea..
摘  要:
A method for the determination of Zn、Fe、Mn simultaneously in a supporting solution of 0.4mol/LethyLenediamine、2.5×10-3mol/L triethanolamine and 0.1mol/L potassium thiocyanate by single sweep polarography hasbeen established. The peak potentials were -1.46Zn、-1.69V Fe、-1.78V Mn (υs.SCE). The peak heights were linearlyproportional to the concentration of iron over the range of 0.2~1.2μg/ml Zn、 0.2~1.6μg/ml Fe、0.04~0.5μg/ml Mnrespectively. The detection limits were 0.015μg/ml for Zn、 0.024μg/ml for Fe、0.018μg/ml for Mn. This method wasaccurate, simple and fast with high selectivity.

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