| 峨眉山市和夹江县茶园土壤及茶叶重金属污染评价 |
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| 引用本文： | 刘凡,刘亚,张燕琴,彭思露.峨眉山市和夹江县茶园土壤及茶叶重金属污染评价[J].安徽农业科学,2016,44(32). |
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| 作者姓名： | 刘凡 刘亚 张燕琴 彭思露 |
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| 作者单位： | 乐山师范学院化学学院,四川乐山,614004;乐山师范学院化学学院,四川乐山,614004;乐山师范学院化学学院,四川乐山,614004;乐山师范学院化学学院,四川乐山,614004 |
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| 基金项目： | 四川省乐山市科技计划项目(14NZD021)。 |
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| 摘 要： | 目的]研究峨眉山市和夹江县茶园土壤及茶叶Cu、Cr、Cd、Pb、As和Hg 6种重金属含量,并进行污染评价。方法]采用原子吸收分光光度法测定重金属Cu、Cr、Cd、Pb的含量以及原子荧光分光光度法测定As、Hg的含量,以《土壤环境质量标准GB 15618—1995》为依据,采用单因子污染指数和综合污染指数对茶园土壤样品进行评价。结果]Cu、Cr、Cd、Pb、As、Hg的平均含量分别为30.59、67.08、0.35、24.15、13.32、0.13 mg/kg,根据国家标准GB 15618—1995土壤环境质量二级标准值,Cd处于临界水平,而重金属Cu、Cr、Pb、As、Hg的单项污染指数均小于1.0,属于安全级别。以GB 2762—2012、NY 659—2003、NY/T 288—2012为依据,5个采样点茶园茶叶原料样品中的Cu、Cr、Cd、Pb、As、Hg的含量均远低于国标或部颁的最高含量限值。结论]峨眉山市和夹江县区域茶叶中重金属是安全的,符合国家标准。
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| 关 键 词： | 土壤 茶叶 重金属 土壤污染评价 |
Pollutim Evaluation of Heavy Metals in Soil of Tea Plantations and Tea at Emeishan and Jiajiang |
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| Abstract: | Objective] The aim was to study heavy metal content in soil of tea plantations and tea at Emeishan and Jiajiang ,and evaluate the pollution degree. Method] Thecontent of Cu,Cr,Pb,Cd,As and Hg were determined by atomic absorption spectrophotometry and atomic fluo-rescence spectrometry,based on “GB15618 -1995” of “soil environmental quality standard”, the single factor pollution index and compre-hensive pollution index were used to evaluate the soil samples in tea plantation.Result] The results showed that the average content of Cu, Cr, Cd, Pb, As,Hg were 30.59、67.08、0.35、24.15、13.32 and 0.13mg /kg in soils of the tea plantations, according to the national stand-ard GB15618 -1995 soil environmental quality secondary standard values, Cd in a critical level, and the single pollution index of Cu, Cr, Pb, Hg, as were less than 1.0, it belongs to the level of security.Based on GB2762-2012/NY659-2003 /NY/T288-2012 , the contentof Cu, Cr, Cd, Pb, As, Hg of tea samples of raw materialswere obtained in the five sampling point .The contents were much lower than the na-tional standard or issued by the Department of the highest content limit.Conclusion]The heavy metals content of Emeishan city and jiajiang county are safe and accord with national standard. |
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| Keywords: | Soil Tea Heavy metal Soil pollution evaluation |
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