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Title: Concentration of Heavy Metals in Green-Lipped Mussel (Pernaveridis) from Muar Estuary, Johor
Authors: Ong M.C.; Chai W.Y.; Gan S.L. ; Joseph B.
Aff: School of Marine and Environmental Sciences, Universiti Malaysia Terengganu, 21030 Kuala Terengganu, Malaysia
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Keywords: Heavy Metals; Muar Estuary; Green-Lipped Mussel; Permissible Limit; Consumption
Abstract:A heavy metal pollution study was carried out in Muar Estuary, Johor by using greenlipped mussel (Pernaviridis) as a biomonitor. P. viridisfulfilled most of the important criteria as a biomonitoring agent for pollutant. It was a commercially important protein source in Malaysia, so in public health point of view, the concentration of pollutants found in their body was in concern. The concentration of selected heavy metals which included Cu, Zn, Cd, Pb, As and Hg in P. viridis were detected by using Inductively Coupled Plasma Mass Spectrometry (ICPMS). The average concentration of Cu (17.86 9.83 g/g), Zn (66.16 19.19 g/g), Cd (0.36 0.18 g/g), Pb (0.74 0.31 g/g), As (7.59 g/g) and Hg (0.12 0.046 g/g) were measured in dry weight. Levels of all metals studied do not exceed the permissible limit stated by Malaysia Food Regulation but level of As was beyond the limit stated by Food Regulation Singapore and Food Standard Australia. However, the PTWI calculated for Cu, Zn and Pb were below the value of PTWI established by Joint Expert Committee on Food Additives (JECFA), but PTWI for As was very close to the value stated. It poses a possibility of As poisoning by continuously consuming these greenlipped mussels. It was concluded that, P. viridis collected from Muar Estuary were safe to be consumed. Even though it does not pose a risk on acute toxicity but chronic toxicity might happened due to constantly consumption of this mussel.