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首页> 外文期刊>Environmental Science & Technology >Increase in rice grain arsenic for regions of Bangladesh irrigating paddies with elevated arsenic in groundwaters
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Increase in rice grain arsenic for regions of Bangladesh irrigating paddies with elevated arsenic in groundwaters

机译：孟加拉国地下水中砷含量升高的稻田的水稻籽粒砷含量增加

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Concern has been raised by Bangladeshi and international scientists about elevated levels of arsenic in Bengali food, particularly in rice grain. This is the first inclusive food market-basket survey from Bangladesh, which addresses the speciation and concentration of arsenic in rice, vegetables, pulses, and spices. Three hundred thirty aman and boro rice, 94 vegetables, and 50 pulse and spice samples were analyzed for total arsenic, using inductivity coupled plasma mass spectrometry (ICP-MS). The districts with the highest mean arsenic rice grain levels were all from southwestern Bangladesh: Faridpur (boro) 0.51 > Satkhira (boro) 0.38 > Satkhira (aman) 0.36 > Chuadanga (boro) 0.32 > Meherpur (boro) 0.29 mu g As g(-1). The vast majority of food ingested arsenic in Bangladesh diets was found to be inorganic; with the predominant species detected in Bangladesh rice being arsenite (As-III) or arsenate (AsV) with dimethyl arsinic acid (DMA(V)) being a minor component. Vegetables, pulses, and spices are less important to total arsenic intake than water and rice. Predicted inorganic arsenic intake from rice is modeled with the equivalent intake from drinking water for a typical Bangladesh diet. Daily consumption of rice with a total arsenic level of 0.08 mu g As g(-1) would be equivalent to a drinking water arsenic level of 10 mu g L-1.
机译：孟加拉国和国际科学家对孟加拉食品（尤其是米粉）中砷的含量升高表示关注。这是孟加拉国首次进行的包容性食品市场调查，该调查研究了大米，蔬菜，豆类和香料中砷的形态和浓度。使用电感耦合等离子体质谱法（ICP-MS）分析了330种阿曼和硼米，94种蔬菜以及50种豆类和香料样品中的总砷。砷稻米平均谷物含量最高的地区均来自孟加拉国西南部：法里德布尔（硼）0.51>萨奇拉（硼）0.38>萨奇拉（阿曼）0.36> Chuadanga（硼）0.32>梅赫布尔（硼）0.29克As g（ -1）。孟加拉国饮食中摄入的绝大多数食物中的砷都是无机的；在孟加拉国大米中检测到的主要物种为亚砷酸盐（As-III）或砷酸盐（AsV），其中次要成分为二甲基a酸（DMA（V））。蔬菜，豆类和香料对砷的总摄入量的重要性不如水和大米。预测的大米中无机砷的摄入量与典型孟加拉国饮食中饮用水的当量摄入量相仿。每天摄入总砷含量为0.08μgAs g（-1）的大米相当于饮用水中的砷含量为10μgL-1。

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