Trace elements in rice grain and agricultural soils: assessment of health risk of inhabitants near a former secondary lead smelter in Khulna, Bangladesh

被引:12
作者
Islam, Md. Azharul [1 ]
Akber, Md. Ali [2 ]
Rahman, Md. Bayzidur [3 ]
Rahman, Md. Aminur [4 ]
Haque, Md. Aynal [4 ]
Islam, Md. Atikul [2 ]
机构
[1] Khulna Univ, Forestry & Wood Technol Discipline, Khulna, Bangladesh
[2] Khulna Univ, Environm Sci Discipline, Khulna, Bangladesh
[3] UNSW, Sch Publ Hlth & Community Med, Sydney, NSW, Australia
[4] DPHE, Zonal Lab, Khulna, Bangladesh
关键词
Lead smelter; Trace elements; Agricultural soil; Rice grain; Health risk; Bangladesh; HEAVY-METAL CONCENTRATIONS; ECOLOGICAL RISK; INTELLECTUAL IMPAIRMENT; DONG MAI; LAND-USE; VEGETABLES; POLLUTION; CHILDREN; BLOOD; CONTAMINATION;
D O I
10.1007/s10653-019-00299-2
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Ingestion of food grain grown in metal-contaminated soils may cause serious effects on human health. This study assessed the concentrations of Pb, As, Cd and Zn in agricultural soils and in rice grains near a former secondary lead smelter in Khulna, Bangladesh. It analyzed 29 samples of surface soil and rice grain collected around 500 m of the smelter. Contamination factor (C-f), pollution load index and total hazard quotient (THQ) were calculated to determine ecological and human health risks. Cd was not detected in any of the samples. For the soil samples, medians of the concentrations of Pb, As and Zn were 109, 6.2 and 514 mg/kg, respectively. For the rice grain samples, medians of the concentrations of Pb, As and Zn were 4, 1.4 and 25 mg/kg fw, respectively. Medians of the concentrations of Pb and As in rice grain were higher compared to their maximum allowable limit (0.2 mg/kg), which indicate potential health risks to inhabitants near the Pb smelter. The mean values of C-f for Pb, As, and Zn were, respectively, 11.6, 2.1 and 7.4. For Pb, around 41% of the samples had C-f > 6 indicating very strong contamination. THQ values for Pb and As were greater than 1.0, which evinces the health hazards of these trace elements. Measures should be taken to prevent trace elements exposure from Pb smelter in the study area.
引用
收藏
页码:2521 / 2532
页数:12
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