本文選題：降水 + 降塵�。� 參考：《生態(tài)環(huán)境學報》2016年09期

【摘要】：為了解"兩控區(qū)"降水、降塵中重金屬元素的污染現(xiàn)狀及其在大氣作用過程中的相互影響,于2015年3月—2016年2月,對"兩控區(qū)"貴州都勻市降水、降塵樣品分別進行逐次和逐月采集,利用電感耦合等離子體質譜儀(ICP-MS)對樣品中重金屬元素(Zn、Mn、As、Cu、Ni、V、Cr、Cd等)進行測定,分析樣品中重金屬元素的季節(jié)分布特征,并對同一種元素在降水和降塵中的相關性進行探討。研究結果表明:降水中重金屬元素的質量濃度范圍為0.08~13.80μg·L-1,其中Zn質量濃度最高,其次依次為Mn、As、Cu、Ni、V、Cr、Cd;與《地表水環(huán)境質量標準》中Ⅰ類水體標準相比,降水中的重金屬元素均未超標;降塵中Cu、As、Cd、Zn較富集,分別為土壤背景值的381.0、2.6、2.7、1.2倍。從季節(jié)變化看,降水中多數(shù)重金屬元素表現(xiàn)為夏季最低,春季最高,降塵中重金屬元素的季節(jié)變化不明顯。降水、降塵中Zn、Mn、As、Cu、Ni、V、Cr、Cd等的沉降量隨季節(jié)變化具有相似規(guī)律性,相關系數(shù)分別為0.70、0.66、0.97、0.78、0.53、0.43、0.94、0.67,主要與降雨強度、元素的賦存形態(tài)及其在氣溶膠中的粒徑分布有關。
[Abstract]:In order to understand the pollution status of heavy metal elements in precipitation and dust fall in "two control areas" and their interaction in the process of atmospheric action, precipitation in Duyun City, Guizhou Province, from March 2015 to February 2016, was studied. The dust fall samples were collected step by step and month by month. The heavy metal elements in the samples were determined by inductively coupled plasma mass spectrometer (ICP-MS), and the seasonal distribution characteristics of heavy metal elements in the samples were analyzed. The correlation of the same element in precipitation and dust fall was discussed. The results show that the mass concentration range of heavy metal elements in precipitation is 0.08 ~ 13.80 渭 g / L ~ (-1), among which Zn concentration is the highest, followed by Mn-As-CuCuLi _ (+) V _ (+) Cr ~ (1) CD, and the heavy metal elements in precipitation do not exceed the standard when compared with the "Surface Water Environmental quality Standard". The concentration of Cu _ (2 +) ~ (2 +) ~ (2 +) in dustfall was 1.2 times of that of soil background value (381.0) ~ (2.6) ~ (2. 7) ~ (-1) ~ (-1). In terms of seasonal variation, most heavy metal elements in precipitation are the lowest in summer and the highest in spring, but the seasonal variation of heavy metal elements in dust fall is not obvious. The precipitation and precipitation of Zn ~ (2 +) mn ~ (2 +) ~ (2 +) ~ (2 +) ~ (2 +), Zn ~ (2 +) mn ~ (2 +) ~ (2 +) ~ (2 +) ~ (2 +) ~ (2 +) ~ (2 +) ~ (2 +) ~ (2 +) ~ (2 +) ~ (2 +) ~ (2 +) ~ (2 +) ~ (2 +) ~ (2 +) and so on, have similar regularity with seasonal variation, and the correlation coefficient is 0.70 ~ 0.6@@
【作者單位】： 貴州大學資源與環(huán)境工程學院;
【基金】：國家自然科學基金項目(41265008) 貴州省環(huán)境保護廳環(huán)境科技項目(黔環(huán)科[2011]6號) 貴州省重點學科建設項目(黔學位合字ZDXK[2016]11號)
【分類號】：P426.6;X51

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