Arsenic concentrations in rice, vegetables, a fish in Bangladesh: a preliminary study
Arsenic concentrations in rice, vegetables, a fish in Bangladesh: a preliminary study
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DOI：
10.1016/j.envint.2003.09.005
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发表时间：
2004-05-01
影响因子：
11.8
通讯作者：
Rabbani, GH
中科院分区：
文献类型：
--
作者：
Das, HK;Mitra, AK;Rabbani, GH
砷对孟加拉国地下水的污染是世界上最大的环境健康危害之一。由于食用用受砷污染的水灌溉的农田种植的农产品对人体健康有潜在风险，我们测定了从孟加拉国三个不同地区采集的100个农作物、蔬菜和淡水鱼的污染水平。用氢化物发生原子吸收光谱法测定砷的含量。所有的水样本和18个土壤样本都超过了预期的砷限量。水稻(Oryza sativa L.)砷含量超过推荐的1.0毫克/公斤。然而，水稻植株，特别是根的砷含量(2.4 mg/kg)显著高于茎(0.73 mg/kg)和稻谷(0.14 mg/kg)。蔬菜中的砷含量各不相同，超过食品安全限值的蔬菜有卡楚萨克(0.09-3.99 mg/kg，n=9)、马铃薯(Solanum Tuberisum)(0.07-1.36 mg/kg，n=5)和卡尔米萨克(0.1-1.53 mg/kg，n=6)。拉塔鱼(Ophicephalus Pot Tatus)不含有不可接受的砷。这些结果表明，砷污染了孟加拉国的一些食品。需要对更大样本进行进一步研究，以证明孟加拉国食品中砷污染的程度。(C)2003爱思唯尔有限公司。保留所有权利。
Arsenic contaminating groundwater in Bangladesh is one of the largest environmental health hazards in the world. Because of the potential risk to human health through consumption of agricultural produce grown in fields irrigated with arsenic contaminated water, we have determined the level of contamination in 100 samples of crop, vegetables and fresh water fish collected from three different regions in Bangladesh. Arsenic concentrations were determined by hydride generation atomic absorption spectrophotometry. All I I samples of water and 18 samples of soil exceeded the expected limits of arsenic. No samples of rice grain (Oryza sativa L.) had arsenic concentrations more than the recommended limit of 1.0 mg/kg. However, rice plants, especially the roots had a significantly higher concentration of arsenic (2.4 mg/kg) compared to stem (0.73 mg/kg) and rice grains (0.14 mg/kg). Arsenic contents of vegetables varied; those exceeding the food safety limits included Kachu sak (Colocasia antiquorum) (0.09-3.99 mg/kg, n = 9), potatoes (Solanum tuberisum) (0.07-1.36 mg/kg, n = 5), and Kalmi sak (Ipomoea reptoms) (0.1-1.53 mg/kg, n = 6). Lata fish (Ophicephalus punctatus) did not contain unacceptable levels of arsenic. These results indicate that arsenic contaminates some food items in Bangladesh. Further studies with larger samples are needed to demonstrate the extent of arsenic contamination of food in Bangladesh. (C) 2003 Elsevier Ltd. All rights reserved.