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Mercury levels of marine fish commonly consumed in Peninsular Malaysia

Content Provider	PubMed Central
Author	Ahmad, Nurul Izzah Noh, Mohd Fairulnizal Mohd Wan, Mahiyuddin Rozita Jaafar, Hamdan Ishak, Ismail Azmi, Wan Nurul Farah Wan Veloo, Yuvaneswary Hairi, Mohd Hairulhisam
Abstract	This study was conducted to determine the concentration of total mercury in the edible portion of 46 species of marine fish (n = 297) collected from selected major fish landing ports and wholesale markets throughout Peninsular Malaysia. Samples were collected in June to December 2009. Prior to analysis, the fish samples were processed which consisted of drying at 65 °C until a constant weight was attained; then, it was grounded and digested by a microwave digestion system. The analytical determination was carried out by using a mercury analysis system. Total mercury concentration among fish species was examined. The results showed that mercury concentrations were found significantly higher (p < 0.001) in demersal fish (the range was from 0.173 to 2.537 mg/kg in dried weight) compared to pelagic fish (which ranged from 0.055 to 2.137 mg/kg in dried weight). The mercury concentrations were also higher in carnivorous fish especially in the species with more predatory feeding habits. Besides, the family group of Latidae (0.537 ± 0.267 mg/kg in dried weight), Dasyatidae (0.492 ± 0.740 mg/kg in dried weight), and Lutjanidae (0.465 ± 0.566 mg/kg in dried weight) showed significantly (p < 0.001) higher mercury levels compared to other groups. Fish collected from Port Klang (0.563 ± 0.509 mg/kg in dry weight), Kuala Besar (0.521 ± 0.415 mg/kg in dry weight), and Pandan (0.380 ± 0.481 mg/kg in dry weight) were significantly higher (p = 0.014) in mercury concentrations when compared to fish from other sampling locations. Total mercury levels were significantly higher (p < 0.002) in bigger fish (body length >20 cm) and were positively related with fish size (length and weight) in all fish samples. Despite the results, the level of mercury in marine fish did not exceed the permitted levels of Malaysian and JECFA guideline values at 0.5 mg/kg methylmercury in fish.
Related Links	http://dx.doi.org/10.1007/s11356-014-3538-8
Ending Page	3686
Page Count	15
Starting Page	3672
File Format	PDF
ISSN	09441344
e-ISSN	16147499
Journal	Environmental Science and Pollution Research International
Issue Number	5
Volume Number	22
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2015-03-01
Access Restriction	Open
Rights Holder	Springer Berlin Heidelberg
Subject Keyword	Pollution Health, Toxicology and Mutagenesis Environmental Chemistry Research in Higher Education
Content Type	Text
Resource Type	Article
Subject	Environmental Chemistry Health, Toxicology and Mutagenesis Pollution Medicine

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