摘要
采用BCR法、Tessier法和Dold法对土壤和尾砂中Pb的赋存形态进行对比分析。结果表明,土壤中Pb的主要赋存形态是可还原态和残渣态。尾砂中Pb的形态主要是原生硫化物态和残渣态。三种方法提取的土壤有效态Pb结果较一致,其百分比含量均为50%左右,可迁移性较强。三种方法的回收率都大于90%。BCR法和Tessier法都适合土壤Pb形态分析,前者回收率略高于后者,但是都不适用于尾砂中Pb的形态分析,而BCR法回收率略高于Tessier法。Dold法既适用于土壤,也适用于尾砂中Pb的形态分析,但是Dold法操作步骤较为繁琐,耗时也较长。
A comparison of BCR, Tessier and Dold method was carried out on speciation analysis of Pb in soils and tailings surrounding mine area. The results showed that Pb in soils existed mainly in reducible fraction and residual fraction, while Pb in tailings existed mainly in primary sulfides fraction and residual fraction.Available Pb in soils by three method were consistent and its percentage content were about 50 %, which meant a relative strong migration of Pb in soils. And the recovery rate of three method were large than 90 %. BCR and Tessier method were suitable for speciation analysis of Pb in soils and not inapplicable to Pb in tailings,but the BCR method had a higher recovery. However, Dold method was applicable to Pb in both of soils and tailings, but the method was complicated and time consuming.
作者
付志平
冼子良
雷畅
纪冰儿
严瑞涛
Fu Zhiping;Xian Ziliang;Lei Chang;Ji Binger;Yan Ruitao(School of Chemistry and Civil Engineering,Shaoguan University,Shaoguan 512005,China)
出处
《广东化工》
CAS
2022年第6期80-83,共4页
Guangdong Chemical Industry
基金
韶关市科技计划(2019sn071)
韶关学院校级科研项目(SY2017KJ07)
广东省大学生创新创业训练计划项目(201810576075)
广东省科技专项资金项目(201112166271219)。
