本文關(guān)鍵詞： 渤海 沉積物 水體 汞 二次污染　出處：《漁業(yè)科學(xué)進展》2016年04期 　論文類型：期刊論文

【摘要】：以2013年5月從渤海采集到的表層沉積物及水樣為研究對象,對渤海中部海域汞(Hg)的空間分布規(guī)律進行分析。結(jié)果顯示,沉積物中,Hg的含量為(1.058 9.256)×10~(-3)mg/kg,平均值為4.781×10~(-3)mg/kg;水體中,Hg的含量為0.005 0.240μg/L,平均值為0.090μg/L。由于沉積物的粒度組成是影響重金屬元素沉積中最顯著的影響因素之一,故本研究采用歸一化法對Hg的"粒度效應(yīng)"進行校正,并以水體中的Hg作為參照與校正結(jié)果進行對比,來分析沉積物中的Hg對周邊環(huán)境造成的影響。將校正后沉積物與水體中的Hg進行相關(guān)性分析,二者相關(guān)性顯著(R=0.634,P0.001,n=29)。推測,水體中的Hg主要來自于沉積物中Hg的釋放。由此可見,這種"二次污染"會對周邊環(huán)境造成長期的危害,在治理的過程中需要引起重視。
[Abstract]:Taking the surface sediments and water samples collected from the Bohai Sea in May 2013 as the research object, the spatial distribution of HG) in the central Bohai Sea is analyzed. The results show that, The content of Hg in sediments was 1.058 鹵9.256) 脳 10 ~ (10) ~ (-3) mg 路kg ~ (-1) with an average of 4.781 脳 10 ~ (10) ~ (-3) mg 路kg ~ (-1), and that in water was 0.005 ~ 0.240 渭 g 路L ~ (-1) with an average of 0.090 渭 g 路L ~ (-1). The grain size composition of sediments was one of the most significant factors affecting the deposition of heavy metal elements. In this study, the "particle size effect" of Hg was corrected by normalized method, and the results were compared with that of Hg in water. In order to analyze the effect of Hg in sediment on the surrounding environment, the correlation between the corrected sediment and Hg in water was analyzed, and the correlation between them was significant. It is inferred that Hg in water comes mainly from the release of Hg from sediment. This kind of secondary pollution will cause long-term harm to the surrounding environment.
【作者單位】： 農(nóng)業(yè)部海洋漁業(yè)可持續(xù)發(fā)展重點實驗室山東省漁業(yè)資源與生態(tài)環(huán)境重點實驗室中國水產(chǎn)科學(xué)研究院黃海水產(chǎn)研究所;
【基金】：農(nóng)業(yè)部溢油專項“渤海生態(tài)環(huán)境監(jiān)測與評估”(農(nóng)辦漁【2012】117號)和“應(yīng)對溢油關(guān)鍵技術(shù)專項研究”(2012-NZ-5739)共同資助
【分類號】：X834;X55

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