本文選題：矸石山 + 土壤　； 參考：《生態(tài)環(huán)境學(xué)報(bào)》2017年03期

【摘要】：以阜新海州井工礦煤矸石山為研究對(duì)象,在矸石山東南、東北、西南和西北4個(gè)方向50 m范圍內(nèi)共采集表層土壤樣品32個(gè),研究煤矸石堆放對(duì)周邊土壤重金屬污染的危害程度,分析土壤中重金屬的生物有效性,評(píng)價(jià)土壤中重金屬的污染程度及影響其分布的因素。結(jié)果表明:研究區(qū)域土壤中5種重金屬Zn、Pb、Cu、Cr和Ni中,Pb、Cu、Cr和Ni含量的平均值均高于土壤背景值,其中Ni和Cu的含量分別為土壤環(huán)境質(zhì)量Ⅱ級(jí)(GB15618—1995)標(biāo)準(zhǔn)值的1.49倍和1.76倍。土壤中重金屬含量基本呈現(xiàn)出隨著距煤矸石堆距離的增加而下降的趨勢(shì)。單因子污染指數(shù)和內(nèi)梅羅綜合污染指數(shù)法評(píng)價(jià)結(jié)果為重金屬Ni單項(xiàng)污染水平最高,有28.1%的樣本處于輕度污染水平,研究區(qū)域土壤中5種重金屬綜合污染指數(shù)大于1,土壤處于輕度污染。BCR順序提取法對(duì)研究區(qū)域土壤中重金屬形態(tài)的分析結(jié)果顯示,5種重金屬都以殘?jiān)鼞B(tài)為主要存在形態(tài),弱酸溶態(tài)含量?jī)H占總量的2.09%~10.8%。統(tǒng)計(jì)分析結(jié)果顯示,研究區(qū)域32個(gè)土壤樣品中重金屬的形態(tài)分布未呈隨土壤pH值變化而變化趨勢(shì),土壤有機(jī)質(zhì)與相應(yīng)土壤中重金屬形態(tài)分布相關(guān)性分析數(shù)據(jù)表明,土壤有機(jī)質(zhì)不是影響研究區(qū)域土壤中重金屬分布的主要因素。
[Abstract]:A total of 32 surface soil samples were collected in the south, northeast, southwest and northwest of Fuxin Haizhou well mine coal gangue mountain within 50 m in the south, northeast, southwest and northwest of the region. The harm degree of the coal gangue stacking to the surrounding soil heavy metal pollution was studied. The bioavailability of heavy metals in soil was analyzed, and the pollution degree of heavy metals in soil and the factors affecting their distribution were evaluated. The results showed that the average values of five heavy metals, Zn, Pb, Cu, Cr and Ni, were higher than the soil background values, and the contents of Ni and Cu were 1.49 times and 1.76 times of the standard values of soil environmental quality grade 鈪，

本文編號(hào)：2019929