环境科技
環境科技
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ENVIRONMENTAL SCIENCE AND TECHNOLOGY
2014年
2期
1-4
,共4页
陈秋平%胥思勤%陈洁薇%吴贞术
陳鞦平%胥思勤%陳潔薇%吳貞術
진추평%서사근%진길미%오정술
锑矿区%土壤污染%重金属%植物富集
銻礦區%土壤汙染%重金屬%植物富集
제광구%토양오염%중금속%식물부집
Antimony mine area%Soil pollution%Heavy metal%Plant accumulation
采用湿法消解-原子荧光光谱法测定晴隆锑矿区11个采样点土壤及对应植物中重金属As,Sb,Hg,Cd含量。结果表明,矿区土壤中4种重金属元素的平均含量均超出贵州省土壤背景值,土壤受Sb污染最严重,其次是As , Cd,Hg的污染。6种植物(蕨菜、芒萁、茶叶、玉米、斑茅、牛尾蒿)体内Sb,As的含量都超过正常范围,其中牛尾蒿对Cd的富集系数达3.25,具有修复镉污染土壤的潜力。
採用濕法消解-原子熒光光譜法測定晴隆銻礦區11箇採樣點土壤及對應植物中重金屬As,Sb,Hg,Cd含量。結果錶明,礦區土壤中4種重金屬元素的平均含量均超齣貴州省土壤揹景值,土壤受Sb汙染最嚴重,其次是As , Cd,Hg的汙染。6種植物(蕨菜、芒萁、茶葉、玉米、斑茅、牛尾蒿)體內Sb,As的含量都超過正常範圍,其中牛尾蒿對Cd的富集繫數達3.25,具有脩複鎘汙染土壤的潛力。
채용습법소해-원자형광광보법측정청륭제광구11개채양점토양급대응식물중중금속As,Sb,Hg,Cd함량。결과표명,광구토양중4충중금속원소적평균함량균초출귀주성토양배경치,토양수Sb오염최엄중,기차시As , Cd,Hg적오염。6충식물(궐채、망기、다협、옥미、반모、우미호)체내Sb,As적함량도초과정상범위,기중우미호대Cd적부집계수체3.25,구유수복력오염토양적잠력。
A method for the determination of contents of heavy metals such as As,Sb,Hg and Cd in soil samples and their associated plant species were established using wet digestion-atomic fluorescence spectrometry in antimony mine of Qinglong. The results revealed that all the average contents of the four heavy metals in soils of the mining area had exceeded the background value of heavy metals in Guizhou Province and China. The soil of this mine was seriously polluted by As, Cd and Hg, especially Sb. The Sb and As concentrations in the Pteridium aquilinum (Linn.) Kuhn var., Dicranopteris linearis (Burm.) Underw., Camellia sinensis (L.)O.Kuntze, Zea mays, Saccharum ar-undinaceum Retz, Artemisia dubia Wall. ex Bess exceeded the normal ranges, the bioaccumulating coefficient of Artemisia dubia Wall. ex Bess were 3.25, which had a better potential and practical use in phytore-mediation.