The study was conducted to determine of copper (Cu) in muscle tissue of Tinfoil Barn Fish (Barbonymus schwanenfeldii) and surface water at Kuantan River and Pinang River, Pahang. The study also determine the water quality parameters and water quality index (WQI). The fish was caught by using gill net and the were digest using acid digestion method and analysed by Inductive Coupled Plasma Micro Spectrometer (ICP-MS). The mean concentration of Cu in fish muscle was 0.5070 ± 0.01748 mg/kg for Kuantan River and 0.4732 ± 0.01807mg/kg for Pinang River which below the permissible limit set by Malaysia Food Act (MFA) and Food and Agriculture Organization (FAO). Cu concentration were 0.0052 ± 0.0004390 mg/kg in Kuantan River and 0.0017 ± 0.00006669 mg/kg in Pinang River. The level of Cu in both rivers were not harmful to the fish as the concentrations are below the permissible limit set by US Environmental Protection Agency (USEPA) and National Water Quality Standard (NWQS). There was no significant difference (p < 0.05) in the concentration of muscle tissue for Cu between rivers. In contrast, there showed a significant difference (p < 0.05) in the concentration of Cu in water between rivers. Kuantan River and Pinang River have been classified in Class II according to the Department of Environment (DOE) that the water must require conventional treatment for water supply purpose.
Heavy metal exhibit toxic and persistent characteristics, can enter into the food chains and the ecosystem where they cause adverse impact on the biotic and abiotic components of ecosystem. Heavy metal pollution in Malaysia has become a major health concern for humans. Thus, this study was conducted to determine the level of cadmium (Cd) and nickel (Ni) in the muscle and gill of fishes collected from the Sungai Kuantan and Sungai Riau. Field sampling was conducted between September and December 2017. Five different species of fishes: Barbonymus gonionotus (Lampam Jawa), B. schwanenfeldii( Lampam Sungai), Hampala macrolepidota(Sebarau), Chitala chitala (Belida), and Hemibagrus nemurus(Baung) were digested by using acid digestion method and analysed with Inductively Coupled Plasma-Mass Spectrometry (ICPMS). Concentration of Cd among species were in order of: H. macrolepidota >B.gonionotus> B. schwanenfeldii> C.chitala> H.nemurus, whereas Ni level in fishes were: C. chitala> H. macrolepidota> B. gonionotus> H. nemurus> B. schwanenfeldii. Among all the species, H. macrolepidota from Sungai Kuantan had the highest Cd in both muscle (0.1761±0.0062¬mg/kg) and gills (0.2938±0.0066mg/kg) whereas the highest Ni level in muscle was noted in C. chitala from Sungai Kuantan with (0.1473±0.0755 mg/kg) and in gills of B.gonionotus (0.4544±0.0470mg/kg) from the same river respectively. It was obtained that there was a significant difference (p<0.05) of Cd in muscle between species. Ni concentration in fishes was below the permissible limit stipulated by World Health Organizations WHO (1985) and Food and Agriculture Organizations (2012) but the concentration of Cd was recorded high. However, it was still below the World Health Organization (WHO) 1985 and Malaysian Food Act (MFA) 1983.
Bioaccumulation of heavy metals in mollusc is one of the crucial topics in environmental pollution, toxicology and food safety as it gives great impact on the ecosystem and human health. This study was conducted to identify the level of Cadmium (Cd) and Nickel (Ni) in the soft tissues of mud clams (Polymesoda expansa) and in water samples at Sungai Balok, Pahang. The mud clams and water samples were collected from five sampling stations in Sungai Balok. Sampling was carried out during dry season (May 2018) and wet season (January 2019). The mud clams’ tissues were digested and analysed with inductively coupled plasma-mass spectrometry (ICP-MS). The obtained results revealed that the mean level of Cd and Ni in tissues of mud clams during wet season (0.127±0.104 and 0.909±0.482)mg/kg were higher compared to dry season (0.031±0.014 and 0.245±0.106)mg/kg respectively. Both of Cd and Ni concentrations in the mud clams were found below the limits stated by FAO/WHO (1984), MFA (1983) and FSANZ (2002). There was no significance different (p<0.05) between Cd and Ni in both seasons. Meanwhile, the concentration of Cd in water samples from Balok river during both seasons were the same, which were (0.0001±0.001)mg/kg respectively, whereas for Ni, the concentration in dry and wet season were slightly different with value of 0.0088±0.001mg/kg and in Jan 2019 is 0.0062±0.001ppm. All the water samples from both seasons had Cd and Ni concentrations within Malaysia’s National Water Quality Standard NWQS limits.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.