期刊
EURASIAN SOIL SCIENCE
卷 56, 期 1, 页码 69-74出版社
PLEIADES PUBLISHING INC
DOI: 10.1134/S1064229322601688
关键词
toxicity; copper; arsenic; Eisenia fetida L; dose-response relationships; Dystric Arenosols; Eutric Fluvisols
类别
Soil fauna, especially the earthworm Eisenia fetida L., can be used as a bioindicator organism to assess soil quality. This study demonstrates the potential use of earthworms for ecological assessment of soils contaminated with metals and metalloids, specifically copper and arsenic. The short-term bioassay showed that earthworms avoided soil with increasing copper content, while long-term experiments revealed that arsenic had a greater impact on earthworm reproduction.
Soil fauna can serve as an excellent tool for ecological assessment of soil quality. The earthworm Eisenia fetida L. is widely used as a bioindicator organism to assess the toxicity of metals, metalloids, and other pollutants. Many studies have shown that the concentrations of metals and metalloids toxic to earthworms are an order of magnitude lower in artificially contaminated soils than in industrially contaminated soils. The novelty of this study is that toxicity estimates were made using native industrially contaminated soils. The results of the two experiments demonstrate the potential use of earthworms for ecological assessment of soils contaminated with metals and metalloids due to copper mining activities in central Chile. The main contaminant in these soils was copper, but arsenic, commonly found in copper ore, was also present in the contaminated soils. In the short-term bioassay, E. fetida earthworms avoided the soil in response to increasing copper content. However, in long-term experiments, arsenic proved to be more toxic to earthworm reproduction, while copper had little effect. In this study, we present toxicity thresholds for copper and arsenic to E. fetida in industrially contaminated native soils.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据