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首页> 外文期刊>The Internet journal of veterinary medicine >Contribution of arsenic from agricultural food chain to cow milk in highly arsenic prone zone in Nadia District of West Bengal in India
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Contribution of arsenic from agricultural food chain to cow milk in highly arsenic prone zone in Nadia District of West Bengal in India

机译：印度西孟加拉邦纳迪亚地区高砷易发区的农业食物链中的砷对牛奶的贡献

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Shallow tube well water is highly contaminated with arsenic (As) in arsenic affected area in West Bengal. The results of a total 25 samples in that area showed increased level of arsenic contents in soil (range: 9.671 to 14.964 ppm, n=5), tube well water (range: 0.171 to 0.497 ppm, n=5), paddy plants (range: 0.994 to 3.059 ppm, n=5) and the concentration of cow milk (mean: 0.156 ±0.009 ppm) was 12 times higher than the healthy cattle (0.013 ± 0.011 ppm) from non affected area. Extensive withdrawal of arsenic contaminated ground water contaminates surface soils and plants and causes hazardous effect on animals and arsenic contaminated milk would be dangerous for human consumption through food chain. Introduction Arsenic is one of the most toxic metals derived from natural environment. It is relatively common element that occurs in air, soil and all living tissues. Ground water is one of the most important sources of drinking water and the contamination of ground water with arsenic is one of the serious problems encountered in India. Soil contamination with arsenic occurs through the vehicle-contaminated groundwater being used for irrigation. Arsenic contamination of plants occurs by irrigation with contaminated ground water. The input of arsenic to soil from various sources may prove detrimental to plant through its uptake to the toxic limit, thereby facilitating its entry into the food chain. There is also the possibility of biomagnification of the toxin as it travels up in the food web (Sanyal and Nasar, 2002, Ghosh et al., 2004. The present study was undertaken with the following objectives:To determine the concentration of arsenic in soil and to correlate these level with the amount of arsenic this is contaminated with ground water.To determine the concentration of arsenic in paddy plants that are consumed by cattle.To determine the contribution of arsenic from agricultural food chain to cow milk.
机译：西孟加拉邦受砷影响的地区，浅管井水被砷（As）高度污染。该地区总共25个样品的结果表明，土壤中的砷含量升高（范围：9.771至14.964 ppm，n = 5），管井水（范围：0.171至0.497 ppm，n = 5），稻田植物（范围：0.994至3.059 ppm，n = 5），非患病地区的牛奶浓度（平均值：0.156±0.009 ppm）比健康牛（0.013±0.011 ppm）高12倍。大量抽取受砷污染的地下水会污染表层土壤和植物，并对动物造成危险影响，而受砷污染的牛奶对通过食物链食用的人来说将是危险的。简介砷是源自自然环境的最具毒性的金属之一。它是空气，土壤和所有生物组织中相对常见的元素。地下水是最重要的饮用水来源之一，砷对地下水的污染是印度遇到的严重问题之一。土壤中砷的污染是由于被车辆污染的地下水用于灌溉而发生的。植物的砷污染是通过用受污染的地下水灌溉而发生的。砷从多种来源向土壤中的输入可能会通过吸收到毒性极限而对植物有害，从而促进其进入食物链。当毒素在食物网中向上传播时，也有可能被生物放大（Sanyal和Nasar，2002; Ghosh等，2004）。本研究的目的是：确定土壤中砷的浓度并将这些水平与被地下水污染的砷量相关联。确定牛食用的稻田植物中砷的浓度。确定农业食物链中砷对牛奶的贡献。

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