江西农业学报
江西農業學報
강서농업학보
ACTA AGRICULTURAE JIANGXI
2015年
1期
90-92,96
,共4页
王晓飞%许桂苹%洪欣%陈丽君%梁晓曦
王曉飛%許桂蘋%洪訢%陳麗君%樑曉晞
왕효비%허계평%홍흔%진려군%량효희
BCR法%Maiz法%蔗田土壤%重金属%化学形态%提取
BCR法%Maiz法%蔗田土壤%重金屬%化學形態%提取
BCR법%Maiz법%자전토양%중금속%화학형태%제취
BCR method%Maiz method%Soil of sugarcane field%Heavy metal%Chemical form%Extraction
分别采用BCR法和Maiz法两种连续提取法,对蔗田土壤样品中重金属元素Cu、Zn、Pb、Cd和Ni进行了形态分析。结果表明:Cu、Zn、Pb、Cd和Ni均主要以残渣态的形式赋存,具有较低的潜在生物有效性;Pb主要以可还原态或螯合态的形式存在,具有一定的潜在生物有效性;BCR法得到的重金属回收率高于Maiz法的,但是Maiz法测得的有效态Cu、Zn、Pb、Cd和Ni的量均高于BCR法测得的弱酸提取态的量。
分彆採用BCR法和Maiz法兩種連續提取法,對蔗田土壤樣品中重金屬元素Cu、Zn、Pb、Cd和Ni進行瞭形態分析。結果錶明:Cu、Zn、Pb、Cd和Ni均主要以殘渣態的形式賦存,具有較低的潛在生物有效性;Pb主要以可還原態或螯閤態的形式存在,具有一定的潛在生物有效性;BCR法得到的重金屬迴收率高于Maiz法的,但是Maiz法測得的有效態Cu、Zn、Pb、Cd和Ni的量均高于BCR法測得的弱痠提取態的量。
분별채용BCR법화Maiz법량충련속제취법,대자전토양양품중중금속원소Cu、Zn、Pb、Cd화Ni진행료형태분석。결과표명:Cu、Zn、Pb、Cd화Ni균주요이잔사태적형식부존,구유교저적잠재생물유효성;Pb주요이가환원태혹오합태적형식존재,구유일정적잠재생물유효성;BCR법득도적중금속회수솔고우Maiz법적,단시Maiz법측득적유효태Cu、Zn、Pb、Cd화Ni적량균고우BCR법측득적약산제취태적량。
The occurrence characteristics of heavy metals Cu, Zn, Pb, Cd and Ni in the soil samples of sugarcane fields in Guangxi were analyzed by using BCR and Maiz sequential extraction procedures respectively.The results showed that Cu, Zn, Pb, Cd and Ni existed mainly in residual fraction, and they had a lower potential bioavailability.Pb existed mainly in reducible fraction or chelated fraction, and it possessed a certain potential bioavailability.In addition, BCR method acquired higher recovery rate of heavy metal than Maiz method, but the quantity of effective-state Cu, Zn, Pb, Cd and Ni measured by Maiz method was all higher than that of weak-acid-extractable-state Cu, Zn, Pb, Cd and Ni measured by BCR method.