Aluminum Bioaccumulation in the Earthworm and Acute Toxicity to the Earthworm
Aluminum is a highly cytotoxic metal to plants, but its toxicity and accumulation to invertebrates in neutral soils is still unknown. This study is to determine the acute toxicity and bioaccumulation of aluminum to the earthworm. The ecotoxicity tests were based on the methods of international standardization of organization (ISO) and OECD guideline with some modification. The contents of aluminum were measured with Graphite Furnace Atomic Absorption Spectrometry. The experimental period of accumulation test was 32 days. The experiments indicated that aluminum had strongly toxic to earthworms with LC50 of 532.33 mg Al/kg dry soil at pH of 7.0. There were about 1.7 mg monomeric Al/kg dry soil and 2.5 mg water-soluble Al/kg dry soil. Earthworms had ability to enrich aluminum at the low contaminated soils doses and bioaccumulation attained maximum then biodegraded obviously. There was a negative correlation evidently between the bioconcentration factor and the dose contaminated soils by Al.
ZHAO Li QIU Jiang-ping
College of Life Sciences and biotechnology Harbin Normal University Harbin, China School of Agriculture and Biology Shanghai Jiao Tong University Shanghai, China
国际会议
成都
英文
1-4
2010-06-18（万方平台首次上网日期，不代表论文的发表时间）