槐叶萍植物体重金属含量及其评价  

Heavy Metal Content in the Plant of Salvinia natans.All and Its Evaluation

作　　者：马坤 刘冲 颜蕾 贾传龙 陈涛 MA Kun;LIU Chong;YAN Lei;JIA Chuan-long;CHEN Tao(Taierzhuang Branch, Zaozhuang Ecological Environment Bureau, Zaozhuang 277400, China)

机构地区：[1]枣庄市生态环境局台儿庄分局,山东枣庄277400

出　　处：《西安文理学院学报（自然科学版）》2020年第4期67-71,共5页Journal of Xi’an University(Natural Science Edition)

摘　　要：测定了京杭运河台儿庄段槐叶萍不同部位中的重金属含量,并运用单因子污染指数和内梅罗综合污染指数相结合的方法评价了京杭运河台儿庄段槐叶萍重金属含量特征.结果显示:槐叶萍花芽、叶、根与茎样品中均监测出Hg、As、Pb、Cd、Cu 5种重金属,其中样品中重金属Pb的含量最高,Hg的含量最低.与标准限值相比,除花芽外,根与茎中的重金属Pb、Cd,叶中重金属Hg、Cd的平均含量均高于标准限量值.槐叶萍根与茎和叶均受到重金属的污染且处于中度污染水平;花芽未受到重金属的污染,处于警戒水平.In this paper,the contents of heavy metals in different parts of Salvinia natans.All in Taierzhuang section of Beijing-Hangzhou Canal were determined,and the single factor pollution index and Nemerow comprehensive pollution index were used to evaluate the heavy metal content characteristics of Salvinia natans.All in Taierzhuang section of the Beijing-Hangzhou Canal.The results showed that five heavy metals Hg,As,Pb,Cd,Cu were detected in the flower root and stem,leaf,bud samples of Salvinia natans.All,among which the content of heavy metal Pb was the highest and the content of Hg was the lowest.Compared with the standard limits,except for flower buds,the average content of heavy metal Hg and Cd in the roots and stems except flower buds was higher than the standard limit value.The root and stems,leaf are polluted by heavy metals and at a moderate pollution level,and the flower bud is not polluted by heavy metals and at the level of warning line.

关 键 词：槐叶萍 重金属 评价 台儿庄 

分 类 号：X502[环境科学与工程—环境工程] X503.233