华北平原某铅冶炼厂附近土壤的重金属含量和理化性质(英文)  

Changess of Lead Levels and the Physicochemical Properties of Soils in the Vicinity of a Lead Smelter in the North China Plain

作　　者：李立平[1] 马春花[1] 邢维芹[1] 向国强[1] 闫庆[1] 

机构地区：[1]河南工业大学化学化工学院,郑州450001

出　　处：《西北农业学报》2012年第8期186-194,共9页Acta Agriculturae Boreali-occidentalis Sinica

基　　金：Natural Science Foundation of Bureau of Education,Henan Province(No.2011A610006)

摘　　要：在河南某年产量约2.6×105 t的冶炼厂以西,距冶炼厂烟囱239～4 795m处,选20个点,采集0～20、20～40、40～60和60～80cm土样并分析其重金属含量和理化性质。结果表明,在0～20cm土层,土壤Pb质量分数为28.3～183.0mg.kg-1,DTPA提取态Pb质量分数为5.43～75.5mg.kg-1。在0～40cm土层,土壤全量和DTPA提取态Pb质量分数与到烟囱的距离间存在非线性相关性。在40～80cm土层,也存在随距烟囱的距离增加,土壤全铅质量分数增加的现象。在40～80cm土层,当采样点到烟囱的距离小于600m时,土壤DTPA提取态Pb质量分数也较高。土壤pH、电导率和Olsen-P质量分数没有受到冶炼厂的明显影响。随着采样深度增加,高铅样品到烟囱的距离减小。以上结果表明,该冶炼厂已经造成附近土壤全铅和DTPA-Pb质量分数的增加,而土壤其他性质未受到铅冶炼的明显影响。In this work, soil samples were collected at depths of 0-20,20-40,40-60 and 60-80 cm from 20 different sites to the west of a lead smelting plant that has an annual production capacity of 0.26 million tons. The distance from these sites to the smelter chimney ranged from 239 to 4 795 m. Data analysis showed that, at a depth of 0-20 cm, the levels of total Pb in these samples ranged from 28.3-183.0 mg · kg^-1, while the levels of diethylene triamine pentaacetic acid （DTPA）-extractable Pb ranged from 5.43-75.5 mg · kg^-1. A nonlinear relationship existed between the levels of total and DTPA-extraetable Pb and the distance to the chimney at the 0-40 cm depth. Decreasing levels at increasing distances from the chimney were also observed at the 40-80 cm depth for total Pb. Elevat- ed levels of DTPA-extractable Pb were only found in samples at distances 〈600 m from the chimney at the 40-80 cm depth. The soil pH, electrical conductivity and Olsen P were not obviously affected by the smelter. As the depth increased, the horizontal distance from the smelter of sites with elevated levels of Pb decreased. The results suggest that the lead smelting has resulted in higher levels of the total and DTPA-extractable Pb in the soils near the smelter, however, other soil properties are not af- fected by the smelter.

关 键 词：铅 土壤 河南 分布 冶炼厂 

分 类 号：X833[环境科学与工程—环境工程]