Arsenic contamination in irrigation water, agricultural soil and maize crop from an abandoned smelter site in Matehuala, Mexico

被引:62
作者
Aurora Ruiz-Huerta, Esther [1 ]
de la Garza Varelal, Alonso [1 ,2 ]
Miguel Gomez-Bernal, Juan [1 ,3 ]
Castillo, Francisco [1 ,4 ]
Avalos-Borja, Miguel [1 ]
SenGupta, Bhaskar [1 ,5 ]
Martinez-Villegas, Nadia [1 ]
机构
[1] IPICyT, Inst Potosino Invest Cient & Tecnol, Div Geociencias Aplicadas, Camino Presa San Jose 2055,Col Lomas 4A Sec, San Luis Potosi 78216, Slp, Mexico
[2] Univ Autonoma San Luis Potosi, Sierra Leona 550,Col Lomas 4A Sec, San Luis Potosi 78210, SLP, Mexico
[3] Univ Nacl Autonoma Mexico, Fac Quim, Dept Biol, Ciudad Univ, Mexico City, DF, Mexico
[4] Univ Autonoma San Luis Potosi, CONACyT Inst Geol, Av Manuel Nava 6, San Luis Potosi 78290, Mexico
[5] Heriot Watt Univ, Water Acad, Sch Energy Geosci Infraestruct & Soc, EGIS 2-02A William Arrol Bldg, Edinburgh EH14 4AS, Midlothian, Scotland
关键词
Zea mays L; Arsenic; Reduced growth; Calcite; Gypsum; POTENTIALLY TOXIC ELEMENTS; WEST-BENGAL; ZEA-MAYS; TEMPORAL VARIABILITY; SPATIAL-DISTRIBUTION; CALCIUM ARSENATES; OXIDATIVE STRESS; RICE FIELDS; GROUNDWATER; SORPTION;
D O I
10.1016/j.jhazmat.2017.06.041
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Mobility of Arsenic (As) from metallurgical wastes in Matehuala, Mexico has been accounted for ultrahigh concentration of As in water (4.8-158 mg/L) that is used for recreational purposes as well as cultivation of maize. In this study, we (i) measured As concentrations in soils irrigated with this water, (ii) investigated the geochemical controls of available As, and (iii) measured bioaccumulation of As in maize. Water, soil, and maize plant samples were collected from 3 different plots to determine As in environmental matrices as well as water soluble As in soils. Soil mineralogy was determined by X-ray diffraction analysis. Bioaccumulation of As in maize plants was estimated from the bioconcentration and translocation factors. We recorded As built-up in agricultural soils to the extent of 172 mg/kg, and noted that this As is highly soluble in water (30% on average). Maize crops presented high bioaccumulation, up to 2.5 times of bioconcentration and 45% of translocation. Furthermore, we found that water extractable As was higher in soils rich in calcite, while it was lower in soils containing high levels of gypsum, but As bioconcentration showed opposite trend. Results from this study show that irrigation with As rich water represents a significant risk to the population consuming contaminated crops. (C) 2017 Elsevier B.V. All rights reserved.
引用
收藏
页码:330 / 339
页数:10
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