铁矿区水环境样品对秀丽隐杆线虫的毒性研究

矿区环境问题是近年来各研究领域关注的焦点。为探究矿区水环境潜在的生物安全性问题,以安徽省霍邱县大型铁矿区地表水体为研究对象,以秀丽隐杆线虫作为实验动物模型,并以其生长和生殖发育作为生物检测终点,考察了线虫对该矿区周边5个地表水样品的毒性效应的响应。结果表明,矿区水环境样品对线虫的生长和生殖发育具有明显的损伤效应,且这种损伤效应的大小与水样采集点距离采矿区的远近以及水样中主要污染物的含量密切相关。进一步通过主成分分析发现,总铁、可溶性铁、铜、铬和砷是环境水样造成线虫毒性效应的主要影响因子。上述研究结果为铁矿区水环境生物安全性的监测和评价提供了一种新的技术方法和新的视角,并为铁矿区健康风险规避提供新的思路和理论基础数据。

A Study on Toxicity of Water Sample from Iron Mine Area on Caenorhabditis elegans

Mine area environment problems have drawn a considerable amount of intentions in various research fields in recent years. In order to investigate the potential biosafety issues within mine area water environment, toxicity of 5 mine area surface water samples around mine areas on Caenorhabditis elegans that was used as an in vivo animal model was studied in Anhui Province Huoqiu Iron Mine Area; both growth and reproductive developments were used as biological endpoints for damage effects determination. The results show that mine area water environment exsited conspicuous damage effects on both growth and reproductive process of Caenorhabditis elegans, and the extent of these damage effects was highly depended on the distance between the water sampling point and the mining spot, as well as the contents of main contaminants within the water samples. The main influencing factors of total iron, soluble iron, copper, chrome and arsenic within water samples on Caenorhabditis elegans toxicology effects was determined through principal component analysis method. This study provide a new technique and approach for monitoring and evaluating mine area ecological and biological safety.