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茶叶中铜铅铝锌铁含量调查何昭明，高丽霞，冯全珍，周成富卫检教研究用示波极谱法测定了３２份茶叶中的铜、铅、锌，用荧光法和比色法分别测定了茶叶中铝和铁。结果显示：３２个茶样中铜超标５份，超标率为１５．６％；铅无超标样品；提出了铝、锌、铁的标准参数值分别是...
Determination of Copper, Lead, Aluminum, Zinc and Iron Contents in Tea Leaves ZHAO Zhao-Ming, GAO Li-Xia, FENG Quan-Zhen, ZHOU Cheng-Fu WEI Jian-Zheng Research Copper and lead and zinc in 32 tea samples were determined by oscillopolarography. Determination of aluminum in tea leaves and iron. The results show that: 32 tea samples exceed the standard of 5 copper, exceeding the standard rate of 15.6%; lead no excessive samples; proposed aluminum, zinc, iron standard parameter values are ...