蒼南沿浦灣灘涂重金屬污染現(xiàn)狀評價
發(fā)布時間:2018-02-12 05:05
本文關鍵詞: 蒼南沿浦灣 土壤 重金屬 檢測 現(xiàn)狀評價 出處:《土壤通報》2016年01期 論文類型:期刊論文
【摘要】:以溫州蒼南縣沿浦灣灘涂土壤中的重金屬含量為指標,采用環(huán)境污染指數(shù)、地累積指數(shù)和潛在生態(tài)危害指數(shù)綜合評價重金屬的含量水平及對生態(tài)環(huán)境的潛在影響。結果表明:沿浦灣灘涂土壤中重金屬含量較低,均符合土壤環(huán)境質量二級標準。除了元素砷和汞,銅、鉛、鉻、鋅、鎘5種重金屬的含量均為高潮帶和中潮帶高于低潮帶。潛在生態(tài)危害系數(shù)和地累積指數(shù)的順序均為砷(As)銅(Cu)鉛(Pb)鉻(Cr)鋅(Zn)汞(Hg)鎘(Cd);不同重金屬的地累積指數(shù)的污染等級順序為砷(As)銅(Cu)鉛(Pb)=鉻(Cr)=鋅(Zn)=汞(Hg)=鎘(Cd),砷(As)是主要生態(tài)風險因子;總的潛在生態(tài)風險指數(shù)為中潮帶低潮帶高潮帶。綜合三種評價方法,除砷在地累積指數(shù)評價中等級為無污染到中級污染,其余重金屬現(xiàn)狀評價結果均為輕微或低污染。
[Abstract]:Based on the heavy metal content in the soil of tidal flat in Cangnan County, Wenzhou, the environmental pollution index was adopted. The soil accumulation index and potential ecological hazard index comprehensively evaluated the content of heavy metals and their potential impact on the ecological environment. In addition to the elements arsenic and mercury, copper, lead, chromium, zinc, The order of potential ecological hazard coefficient and ground accumulation index are as follows: as) Cu) Pb) Pb) Cr (Cr) Zn) Zn) Hg) CD (Hg) CD ~ (2 +) CD ~ (2 +) CD ~ (2 +) ~ (2 +) CD ~ (2 +) ~ (2 +)) ~ (2 +) CD ~ (2 +) ~ (2 +) ~ (2 +) ~ (2 +) ~ (2 +)). The main ecological risk factors were Pb ~ (B _ (B) = Cr ~ (2 +) Cr ~ (2 +)) Zn ~ (+ +) Zn ~ (2 +) = Hg ~ (2 +) HG = CD ~ (2 +) CD ~ (2 +) ~ (2 +) ~ (2 +) ~ (2 +) ~ (2 +). The total potential ecological risk index is the high tide zone of the low tide zone in the middle tide zone. According to the three evaluation methods, the rank of the accumulation index of arsenic removal in the ground is no pollution to intermediate pollution, and the evaluation results of the status quo of the other heavy metals are slight or low pollution.
【作者單位】: 浙江海洋學院;
【基金】:浙江省教育廳一般項目(Y201534409) 浙江海洋學院科研啟動經費資助項目(21035012513) 浙江省水利河口研究院委托項目(21038002414)資助
【分類號】:X55
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