Effect of Low Concentrations of Phosphate Ions on Extraction of Arsenic from Naturally Contaminated Soil

被引：10

作者：

Mihaljevic, Martin ^{[1
]}

Ettler, Vojtech ^{[1
]}

Sisr, Ludek ^{[1
]}

Sebek, Ondrej ^{[2
]}

Strnad, Ladislav ^{[2
]}

Vonaskova, Vera ^{[2
]}

机构：

[1] Charles Univ Prague, Inst Geochem Mineral & Mineral Resources, Fac Sci, Prague 12843 2, Czech Republic

[2] Charles Univ Prague, Labs Geol Inst, Fac Sci, Prague 12843 2, Czech Republic

来源：

BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY | 2009年 / 83卷 / 03期

关键词：

Arsenic; Phosphates; Soil; Dissolution; Adsorption; Kinetics; Batch experiment; BOHEMIAN MASSIF; GOLD-ORE; ADSORPTION; FRACTIONATION; MOBILITY; TRANSFORMATION; ARSENOPYRITE; SPECIATION; STABILITY; POLLUTION;

D O I：

10.1007/s00128-009-9706-8

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The effect of low concentrations of phosphate ions on the extraction of arsenic (As) was tested on naturally contaminated soil (As 126 mg/kg) using batch experiments. Interaction entails the extraction of low concentrations of As (5.4-23.3 mu g/L As). There are statistical differences in the contents of As, Ca, Cu, Ni, Pb and nitrate in the composition of the extracts. Three types of kinetic curves document that dissolution and precipitation reactions, adsorption, desorption and biological processes participate in determining the composition of the extracts. The elevated As contents in the phosphate extracts are probably caused by competition between phosphate and arsenate ions for soil adsorption sites.

引用

页码：422 / 427

页数：6

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