| 江西茶鲜叶重金属状况评价探讨 |
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| 引用本文： | 熊春红,李昌,谢明勇. 江西茶鲜叶重金属状况评价探讨[J]. 食品与发酵工业, 2011, 37(9) |
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| 作者姓名： | 熊春红 李昌 谢明勇 |
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| 作者单位： | 南昌大学食品科学与技术国家重点实验室,江西南昌,330047 |
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| 基金项目： | 国家自然科学基金资助项目(20462005) |
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| 摘 要： | 对江西省5个茶区的88个茶鲜叶(新叶、老叶)样,以国标方法测定Cu、Pb、Cd、As、Hg、Cr;新拟茶鲜叶限量值结合商品茶限量标准,采用改进的单因子污染指数(PI)和Nemerow综合污染指数(NIPI)对新叶重金属情况进行评价。结果显示,老叶与新叶的Cu、Pb、Hg、Cr含量均存在极显著差异,历年累积明显;分别有11.4%和6.8%的茶园新叶Cu和Cr轻度污染(2≥NIPI>1);全省Cu、Cr轻度污染,Pb为警戒水平(0.6
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| 关 键 词： | 茶鲜叶 重金属 评价 改进法 江西 |
Assessment Discussion on the Degree of Heavy Metals in Fresh Tea Leaves from Jiangxi Province |
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| Xiong Chun-hong,Li Chang,Xie Ming-yong. Assessment Discussion on the Degree of Heavy Metals in Fresh Tea Leaves from Jiangxi Province[J]. Food and Fermentation Industries, 2011, 37(9) |
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| Authors: | Xiong Chun-hong Li Chang Xie Ming-yong |
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| Affiliation: | Xiong Chun-hong,Li Chang,Xie Ming-yong(State Key Laboratory of Food Science and Technology,Nanchang University,Nanchang 330047,China) |
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| Abstract: | Total 88 fresh tea leaves samples(including new leaves and old leaves) from 5 producing district in Jiangxi province were analyzed for the contents of Cu,Pb,Cd,As,Hg and Cr according to relevant national standards.To determine the degree of metal contamination in new leaves,a revised pollution index(PI) for each metal and a Nemerow integrated pollution index(NIPI) of the six metals were analyzed.The results indicated that the contents of Cu,Pb,Hg and Cr were significantly different between new leaves and ol... |
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| Keywords: | fresh tea leaves heavy metals assessment improved method Jiangxi province |
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