在固体废物上种植的蔬菜中的可能比具有更高的生态和人类健康风险
Sunday Egbe Nwachukwu1, Okechukwu Idumah Okogwu2, Godwin Nkwuda Nwonumara1
1Applied Biology Department, Ebonyi State University, PMB 53, Abakaliki, Ebonyi State, Nigeria.
Bulletin of environmental contamination and toxicology
|September 26, 2023
概括
在垃圾填埋场种植蔬菜会造成严重的健康风险,原因是重金属污染,特别是 (Hg). 研究表明生态和人类健康风险很高,主张监测和禁止这种做法.
科学领域:
- 环境科学 环境科学
- 毒理学 毒理学 毒理学
- 农业科学 农业科学
背景情况:
- 固体废物填埋场 (SWD) 土壤上的蔬菜种植在发展中国家普遍存在.
- 这种做法是不安全的,因为在食用作物中可能会有重金属污染.
- 评估生态和人类健康风险至关重要.
研究的目的:
- 评估与在SWD土壤上种植蔬菜相关的生态和人类健康风险.
- 为了确定在SWD土壤上种植的Talium triangulare和Lycopersicon esculentum中的重金属积累.
- 评估人类消费的风险系数 (HQ) 和总危险系数 (THQ).
主要方法:
- 温室种植T. triangulare和L. esculentum在活跃和废弃SWD和控制地点的土壤上.
- 对土壤物理化学特性和重金属含量 (Zn,Mn,Hg,Cu,Pb,Ni,Cd) 的分析.
- 评估生态风险 (生态风险指数 - RI) 和人类健康风险 (HQ,THQ,癌症风险).
主要成果:
- 东南地区的土壤是酸性,有机物很丰富,重金属度跟随Zn > Mn > Hg > Cu > Pb > Ni > Cd.
- 对于水厂倾倒场 (WWD) 土壤,生态风险非常高,主要是由于 (Hg).
- 蔬菜中的含量超过了粮农组织/世卫组织的限制,造成健康风险 (HQ>1 Hg和Co),癌症风险超过了可接受的限制.
结论:
- 在SWD土壤上种植蔬菜带来了重大的生态和人类健康风险,主要是由于毒性.
- (Pb) 没有积累,但 (Hg) 的积累超过了安全限值.
- 建议定期监测和禁止在SWD上种植蔬菜,以减轻毒性和相关的健康风险.
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