Immunotoxicity of Chromium Contaminated Soil in the Earthworm, Lumbricus Terrestris

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Objective was to assess the toxicity of chromium (Cr) contaminated soil (CS) using the earthworm Lumbricus terrestris. Specific aims were to determine: (1) survival (LC50); .(2) immunotoxicity as indicated by lysozyme activity, coelomocyte counts, secretory (SR) and erythrocyte rosette (ER) formation, and phagocytosis; and (3) compare effects of CS exposure with those of Cr spiked artificial soil (AS) . CS Cr concentration was 8.78 mg/g with 98.2% being Cr^3+ and 1.8% being Cr^6+. Using 14 d AS protocol the LC50 was 6.49% CS: AS mixture. CS concentrations of 0.5, 1.0, 2.5 and 5.0% were sublethal, whereas 6.25, 12.5, 25, 50 ... continued below

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x, 85 leaves : ill.

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Mohammadian, Gholamreza May 1993.

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  • Mohammadian, Gholamreza

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Objective was to assess the toxicity of chromium (Cr) contaminated soil (CS) using the earthworm Lumbricus terrestris. Specific aims were to determine: (1) survival (LC50); .(2) immunotoxicity as indicated by lysozyme activity, coelomocyte counts, secretory (SR) and erythrocyte rosette (ER) formation, and phagocytosis; and (3) compare effects of CS exposure with those of Cr spiked artificial soil (AS) . CS Cr concentration was 8.78 mg/g with 98.2% being Cr^3+ and 1.8% being Cr^6+. Using 14 d AS protocol the LC50 was 6.49% CS: AS mixture. CS concentrations of 0.5, 1.0, 2.5 and 5.0% were sublethal, whereas 6.25, 12.5, 25, 50 and 100% CS were lethal. Sublethal exposure caused no immuno- modulation. Exposure to 50% CS: AS mixture for 5 d caused reduced SR and ER formation. Exposure to AS spiked with 0.27% Cr for 5 d resulted in immunomodulation equivalent to 50% CS: AS mixtures. Results indicated the CS to be acutely toxic.

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x, 85 leaves : ill.

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  • May 1993

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  • March 9, 2015, 8:15 a.m.

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  • June 29, 2017, 3:05 p.m.

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Citations, Rights, Re-Use

Mohammadian, Gholamreza. Immunotoxicity of Chromium Contaminated Soil in the Earthworm, Lumbricus Terrestris, thesis, May 1993; Denton, Texas. (digital.library.unt.edu/ark:/67531/metadc501250/: accessed November 17, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; .