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Chemistry

Inorganic Chemistry

Lethal Concentrations of Heavy Metals in Tissue of Earthworms

Authors: Marcel B. Bouche; Patrick Brun; J. Y. Gal; Abdul Rida; MONTPELLIER-2 UNIV (FRANCE)

Abstract: This toxicological research report addresses lethal concentrations of heavy metals in tissue of earthworms. We have presented the work in progress in the first interim report to improve 1) ecotoxicological test, 2) field procedures and 3) standardization of analysis. This second interim report deals mostly with toxicity tests because the point (3) is now in order and the work in field was impossible during the last dry season. Nevertheless, analysis of soil sample are now currently in progress and most data on computer files. We chose here to develop more in detail point (1) new results or state of the art in the improvement of toxicity tests. 1) We have repeated the toxicity tests trying to get the LC50 for the different metals: cadmium, copper, arsenic and mercury. 2) We worked out a method to analyze earthworms. In the first part, we shall present the results of the toxicity test with their interpretations and, in the second part, we shall examine the analytical method and give results of the test-earthworms analyzed, trying to establish a relation between earthworms and artisol from which they come. Keywords: France.

Description:

Interim rept. no. 2

Pages:

Report Date:

OCT 87

Contract Number:

DAJA45-87-C-0013

Report Number:

A290191

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