Accumulation of Trace Metals in Anadara granosa and Anadara inaequivalvis from Pattani Bay and the Setiu Wetlands
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Date
2016-01-02
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Publisher
Bull Environ Contam Toxicol
Abstract
This study was undertaken to assess the levels
of trace metals (As, Cd, Cu, Pb, and Zn) in two common
species of cockles (Anadara granosa and Anadara inaequivalvis)
from two coastal areas in Thailand (Pattani Bay)
and Malaysia (the Setiu Wetlands). A total of 350 cockles
were collected in February and September 2014. Trace
metals were determined by Inductively Coupled Plasma
Mass Spectrometry. We observed that cockles in both areas
had a higher accumulation of metals in September. Notably,
the biota-sediment accumulation (BSAF) of Cd was
highest in both areas. A strong positive correlation of Cd
with the length of the cockles at Pattani Bay (r2 = 0.597)
and the Setiu Wetlands (r2 = 0.675) was noted. It was
suggested that As could be a limiting element (BSAF\1)
of cockles obtained from Pattani Bay. In comparison with
the permissible limits set by the Thailand Ministry of
Public Health and the Malaysia Food Regulations, mean
values of As, Cd, Cu, Pb, and Zn were within acceptable
limits, but the maximum values of Cd and Pb exceeded
the limits for both areas. Regular monitoring of trace
metals in cockles from both areas is suggested for more
definitive contamination determination.
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Citation
Vol.96(4);472-477p.