Laboratory of Plant Nutrition and Environmental Chemistry, Department of Agricultural Chemistry, Faculty of Agriculture, Bangladesh Agricultural University, Mymensingh, 2202, Bangladesh.
College of Agricultural Sciences, International University of Business Agriculture and Technology (IUBAT), Uttara Model Town, Dhaka, 1230, Bangladesh.
Environ Geochem Health. 2022 Dec;44(12):4665-4683. doi: 10.1007/s10653-022-01227-7. Epub 2022 Mar 8.
A quantitative assessment was attempted to determine concentrations of total arsenic (As) in farmer's field soils and fruits of brinjal collected from two famous brinjals producing Upazila's, namely Melandaha and Islampur of Jamalpur district, Bangladesh. The study also evaluated cancer and non-cancer health risks for both males and females caused by dermal exposure of soils and dietary intake of brinjal grown in farmers' fields and sold at different markets of four country districts. The study findings revealed that 75% of soil sampling locations had enrichment factor (EFc) values > 1.5, indicating the anthropogenic sources of As, and 50% of the sites possessed EFc values within the range of 2.0-5.0 indicated moderate enrichment of As. The mean concentrations of As in brinjal grown in farmers' fields and retailers of different markets of four districts were 0.18 and 0.39 µg g, respectively. The soils of the study area exhibited negligible risk in terms of the calculated hazard quotient, hazard index and incremental lifetiame cancer risk (ILCR) values for As due to dermal and ingestion exposures. In contrast, the same values for As due to the dietary intake of brinjal were thousands of times greater than the threshold level in 40% of farmers' field and all retailers' levels samples. Compared to the producer/farmers' field samples, the calculated average non-carcinogenic and carcinogenic health risks were more than twice in samples collected from different retailers. The present study suggests further pinpoint investigation of potential entry routes of As in the supply chain through future traceability studies.
采用定量评估方法，测定了孟加拉国杰马勒布尔县两个著名茄子种植区——梅兰达哈和伊斯拉姆布尔的农田土壤和茄子中的总砷（As）浓度。该研究还评估了男性和女性因皮肤接触土壤和食用在农民田间种植并在四个国家地区不同市场销售的茄子而产生的癌症和非癌症健康风险。研究结果表明，75%的土壤采样点富集因子（EFc）值>1.5，表明存在人为来源的 As；50%的采样点 EFc 值在 2.0-5.0 之间，表明 As 中度富集。四个地区不同市场零售商销售的农民田间种植的茄子中 As 的平均浓度分别为 0.18 和 0.39μg/g。就皮肤和摄入暴露导致的砷计算危害商数、危害指数和增量终生癌症风险（ILCR）值而言，研究区土壤的风险可以忽略不计。相比之下，由于食用茄子导致的相同 As 值在 40%的农民田间和所有零售商的土壤样本中是阈值水平的数千倍。与生产者/农民田间样本相比，从不同零售商处采集的样本中计算出的平均非致癌和致癌健康风险是其两倍以上。本研究建议通过未来的溯源研究，进一步深入调查供应链中 As 的潜在进入途径。
