Ketoksikan akut arsenik, kromium dan selenium terhadap moluska air tawar di Malaysia; filopaludina sumatrensis dan corbicula fluminea

Translated title of the contribution: Acute toxicity of arsenic, chromium and selenium to Malaysian freshwater molluscs; filopaludina sumatrensis and corbicula fluminea

Nurul Akhma Zakaria, Ahmad Abas Kutty

Research output: Contribution to journalArticle

Abstract

Issues of freshwater pollution and metal toxicity has been gaining concern throughout the country. Two freshwater molluscs, Filopaludina sumatrensis and Corbicula fluminea were exposed to a range of three metals (arsenic (As), chromium (Cr) and selenium (Se)) at varied concentrations for 96 h in the controlled laboratory conditions. Mortality was assessed and median lethal concentrations (LC50) and median lethal times (LT50) were calculated. It was observed that both LC50 and LT50 values increased with a decrease in mean exposure concentrations and times, for both species and all metals. Toxicity of As, Cr dan Se increased with times and exposure concentrations for both F. sumatrensis and C. fluminea. The 96 h LC50 values for As, Cr and Se were 4.22, 3.78 and 45.92 mg/L for F. sumatrensis and 11.84, 2.23 and 35.63 mg/L for C. fluminea, respectively. The results indicated that Cr was the most toxic metal to both F. sumatrensis dan C. fluminea. The metal toxicity trend for both molluscs from most to least toxic was Cr > As > Se.

Original languageMalay
Pages (from-to)2601-2608
Number of pages8
JournalSains Malaysiana
Volume47
Issue number11
DOIs
Publication statusPublished - 1 Nov 2018

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selenium
mollusc
chromium
arsenic
toxicity
metal
mortality
exposure

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Ketoksikan akut arsenik, kromium dan selenium terhadap moluska air tawar di Malaysia; filopaludina sumatrensis dan corbicula fluminea. / Zakaria, Nurul Akhma; Abas Kutty, Ahmad.

In: Sains Malaysiana, Vol. 47, No. 11, 01.11.2018, p. 2601-2608.

Research output: Contribution to journalArticle

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