Toxicity of Sodium Molybdate and Sodium Dichromate to Daphnia magna Straus Evaluated in Acute, Chronic, and Acetylcholinesterase Inhibition Tests

TLDR: In this study, the acute and chronic effects of sodium molybdate and sodium dichromate to Daphnia magna Straus were evaluated and both toxicants inhibited AChE in vivo at concentrations under the respective 48-h LC(50) values.

About: This article is published in Ecotoxicology and Environmental Safety.The article was published on 2000-03-01 and is currently open access. It has received 73 citations till now. The article focuses on the topics: Sodium dichromate & Sodium molybdate.

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TABLE 1 Range of Concentrations of Molybdenum and Chromium Tested in Conventional Acute, Chronic, in Vivo, and in Vitro AChE Inhibition Tests

TABLE 2 48-h LC50 Values of Metallic Elements (Chromium and Molybdenum) for Daphnia magna and Their Corresponding 95% Con5dence Limits

FIG. 6. Total growth (a) and total reproduction (b) for each concentration of molybdenum and for the control. Data are expressed as the mean$SEM. (* signi"cantly di!erent at P40.05).

TABLE 4 NOEC, LOEC, and EC50 Values (mg L 21) (Concentrations of Metallic Elements) Determined from in Vivo AChE Inhibition Tests

FIG. 4. In vivo e!ects of molybdenum on in vivo AChE activity. Data are expressed as the mean of three samples (three measurements per sample)$SEM. (* signi"cantly di!erent at P40.05).

FIG. 1. Columns with points indicate the results of AChE activity without subtraction of the e!ect due to the color of chromium solution. White columns presents the in vitro e!ect of chromium on AChE activity with the subtraction of the e!ect of the compound color. Data are expressed as the mean of three samples (three measurements per sample)$ SEM. (* signi"cantly di!erent at P40.05).