EFFECTS OF VARIATIONS OF THE ORGANIC MATTER CONTENT AND PH OF SOILS ON THE AVAILABILITY AND TOXICITY OF ZINC TO THE EARTHWORM EISENIA FETIDA

摘要

Nine toxicity tests were conducted using a procedure based on the OECD (1984) artificial soil earthworm toxicity test. For each test, Eisenia fetida were exposed to zinc in a range of artificial soils with differing pH and/or organic matter (OM) content. Earthworm survival and cocoon production, and the concentrations of zinc in two fractions (nitric acid extractable, water extractable) and the exposed earthworms were measured.