期刊名称：EQA - International Journal of Environmental Quality
印刷版ISSN：2281-4485
出版年度：2016
卷号：20
页码：27-34
语种：English
出版社：Alma Mater Studiorum - University of Bologna
摘要：Arsenic (As) is an ubiquitous metalloid that is introduced into the environment from both anthropogenic and geochemical sources. The As can be introduced in food chain through plants grown on polluted soil and/or contaminated irrigation water. The element may impair plant growth, moreover its toxicity and cancerogenicity poses a threat for human health. Most plants tolerate soil As concentrations up to 50 mg kg −1 . However, at higher levels some plants might be negatively affected, while some others develop strategies to adapt to these conditions. It is known that As absorption, translocation and accumulation depend on plant species. The As tends to concentrate mainly in plant roots and old leaves, with a minor concentration in stems and young leaves, and the lowest concentrations is in fruits. In this study soil As mobility, tomato phytoavailability, and As plant partitioning were measured in an naturally As reach agricultural area (57.49 mg kg -1 ). The results show that As compounds mainly accumulate in the roots (2.85 mg kg -1 ), whereas only a small portion is translocated to fruits (0.08 mg kg -1 ) making the risk for human health negligible.
Loading...
