重金属从受污染的水中转化为土壤,料和动物
Hina Kanwal1, Ali Raza2, Muhammad Saqlain Zaheer3
1Department of Zoology, University of Sialkot, Punjab, Pakistan.
Scientific reports
|May 22, 2024
概括
巴基斯坦的重金属污染.
科学领域:
- 环境科学 环境科学
- 农业科学 农业科学
- 食品安全 食品安全
背景情况:
- 水源的重金属污染对土壤质量,农业生产力和食品安全构成重大威胁.
- 巴基斯坦西阿尔科特的帕斯鲁尔镇面临着重金属污染的关键问题.
- 了解这种污染的程度及其对食物链的影响至关重要.
研究的目的:
- 为了调查水,土壤,料和水牛奶中重金属的存在和水平,在帕斯鲁尔德赫西尔的七个地点进行了调查.
- 为了评估由于重金属暴露而导致的料作物的生化变化.
- 评估与食物链中的重金属积累相关的潜在健康风险.
主要方法:
- 从七个不同的地点抽取水,土壤,料 (barseem) 和水牛奶的样本.
- 使用适当的实验室技术分析重金属度 (例如,Ni,Cr).
- 在料中测量生物化学参数,包括马隆迪化物 (MDA) 和酸盐过氧化酶 (APX) 活性.
- 牛奶成分 (脂肪,蛋白质,密度等) 的确定. 和物理化学特性 (pH,导电性).
- 计算重金属的污染负载指数和健康风险指数.
主要成果:
- 在各种地点的水,土壤和水牛奶样本中检测到 (Ni) 和 (Cr) 的高含量.
- 在barseem根和新鲜的barseem中观察到马隆迪甲基 (MDA) 和酸盐过氧化酶 (APX) 水平的显著变化,表明氧化应激.
- 来自第3站的水牛奶含有最高的Ni含量 (7.22 ppm),而来自第3站的水含有最高的Cr含量 (40.07 ppm).
- 对于Ni的污染负载指数在选定的样本中超过1,健康风险指数有所变化,这表明消费受污染的动物料可能引起健康问题.
- 呈现出最高的健康风险指数,这表明对食品链中的金属沉积存在重大担忧.
结论:
- 重金属污染是研究区普遍存在的问题,影响农业和动物产品.
- 重金属在食物链中的积累,从土壤到料和牛奶,对人类健康构成相当大的风险.
- 需要采取紧急措施控制重金属污染,减轻其对该地区环境质量和公共卫生的不利影响.
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