Determination of heavy metals in fish and seafood

The aim of this study was to detennine concentrations level of heavy metals (zinc, copper, cadmium and lead) in edible parts of fish and seafood. The levels of these metals in fish (6) and seafood (4) purchased from the Kelantan markets were measured. The conventional wet acid digestion method wa...

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Main Author:	Saim, Hafizah
Format:	Thesis
Language:	English
Published:	2011
Subjects:	R Medicine
Online Access:	http://eprints.usm.my/52250/1/HAFIZAH%20BINTI%20SAIM-24%20pages.pdf
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id	my-usm-ep.52250
record_format	uketd_dc
spelling	my-usm-ep.522502022-04-10T04:45:12Z Determination of heavy metals in fish and seafood 2011 Saim, Hafizah R Medicine The aim of this study was to detennine concentrations level of heavy metals (zinc, copper, cadmium and lead) in edible parts of fish and seafood. The levels of these metals in fish (6) and seafood (4) purchased from the Kelantan markets were measured. The conventional wet acid digestion method was used for the mineralization of these samples prior to the quantitative detennination by graphite furnace atomic absorption spectrometry (AOAC International, 2002). The heavy metal concentrations in the fish ranged from (0.020 ± 0.01 to 0.900 ± 0.12 μg/g ww) for Cu, (2.593 ± 0.36 to 9.610 ± 0.08 μg/g ww) for Zn, (0.025 ± 0.0025 to 0.150 ± 0.0014 μg/g ww) for Cd and (0.004 ± 0.014 to 0.110 ± 0.026 μg/g ww) for Pb. Meanwhile, the heavy metal concentrations in seafood ranged from (0.440 ± 0.06 to 9.300 ± 0.10 μg/g ww) for Cu, (1.669 ± 0.46 to 9.800 ± 0.23 μg/g ww) for Zn, (0.340 ± 0.0032 to 0.930 ± 0.0023 μg/g ww) for Cd and (0.006 ± 0.017 to 0.180 ± 0.029 μg/g ww) for Pb. In average, all heavy metals in seafood were higher than in fish. This study also showed that the heavy metals concentration in demersal fish and seafood were higher compared to pelagic species. The metal concentrations in the pelagic species ranged from (0.020 ± 0.01 to 0.672 ± 0.24 μg/g ww) for Cu, (2.593 ± 0.36 to 5.693 ± 0.16 μg/g ww) for Zn, (0.025 ± 0.0025 to 0.041 ± 0.0023 μg/g ww) for Cd, and (0.004 ± 0.014 to 0.005 ± 0.022 μg/g ww) for Pb. Meanwhile, the metal concentrations in demersal species ranged from (0.440 ± 0.06 to 9.300 ± 0.10 μg/g ww) for Cu, (1.669 ± 0.46 to 9.800 ± 0.23 μg/g ww) for zinc, (0.130 ± 0.0023 to 0.930 1 ± 0.0023 μg/g ww) for Cd and (0.006 ± 0.017 to 0.180 ± 0.029 μg/g ww) for Pb. Comparison of heavy metals concentration between pelagic and demersal species were difficult due to the lack of literature information from other studies at more global scale. However, all the average values of these metals from all populations were lower than guidelines and regulations stipulating maximum permissible levels set by the Malaysian Food Act 1983 and Food Regulations 1985 Fourteen Schedule. These metals concentration found in fish and seafood were also considered to be lower compared with literature in other studies. Thus, these concentration levels should result in no acute toxicities of heavy metals since they are lower than the limit. It was concluded that heavy metals concentration level in commercial fish and seafood must be monitored comprehensively and periodically with respect to the consumer health. 2011 Thesis http://eprints.usm.my/52250/ http://eprints.usm.my/52250/1/HAFIZAH%20BINTI%20SAIM-24%20pages.pdf application/pdf en public masters Universiti Sains Malaysia Pusat Pengajian Sains Kesihatan
institution	Universiti Sains Malaysia
collection	USM Institutional Repository
language	English
topic	R Medicine
spellingShingle	R Medicine Saim, Hafizah Determination of heavy metals in fish and seafood
description	The aim of this study was to detennine concentrations level of heavy metals (zinc, copper, cadmium and lead) in edible parts of fish and seafood. The levels of these metals in fish (6) and seafood (4) purchased from the Kelantan markets were measured. The conventional wet acid digestion method was used for the mineralization of these samples prior to the quantitative detennination by graphite furnace atomic absorption spectrometry (AOAC International, 2002). The heavy metal concentrations in the fish ranged from (0.020 ± 0.01 to 0.900 ± 0.12 μg/g ww) for Cu, (2.593 ± 0.36 to 9.610 ± 0.08 μg/g ww) for Zn, (0.025 ± 0.0025 to 0.150 ± 0.0014 μg/g ww) for Cd and (0.004 ± 0.014 to 0.110 ± 0.026 μg/g ww) for Pb. Meanwhile, the heavy metal concentrations in seafood ranged from (0.440 ± 0.06 to 9.300 ± 0.10 μg/g ww) for Cu, (1.669 ± 0.46 to 9.800 ± 0.23 μg/g ww) for Zn, (0.340 ± 0.0032 to 0.930 ± 0.0023 μg/g ww) for Cd and (0.006 ± 0.017 to 0.180 ± 0.029 μg/g ww) for Pb. In average, all heavy metals in seafood were higher than in fish. This study also showed that the heavy metals concentration in demersal fish and seafood were higher compared to pelagic species. The metal concentrations in the pelagic species ranged from (0.020 ± 0.01 to 0.672 ± 0.24 μg/g ww) for Cu, (2.593 ± 0.36 to 5.693 ± 0.16 μg/g ww) for Zn, (0.025 ± 0.0025 to 0.041 ± 0.0023 μg/g ww) for Cd, and (0.004 ± 0.014 to 0.005 ± 0.022 μg/g ww) for Pb. Meanwhile, the metal concentrations in demersal species ranged from (0.440 ± 0.06 to 9.300 ± 0.10 μg/g ww) for Cu, (1.669 ± 0.46 to 9.800 ± 0.23 μg/g ww) for zinc, (0.130 ± 0.0023 to 0.930 1 ± 0.0023 μg/g ww) for Cd and (0.006 ± 0.017 to 0.180 ± 0.029 μg/g ww) for Pb. Comparison of heavy metals concentration between pelagic and demersal species were difficult due to the lack of literature information from other studies at more global scale. However, all the average values of these metals from all populations were lower than guidelines and regulations stipulating maximum permissible levels set by the Malaysian Food Act 1983 and Food Regulations 1985 Fourteen Schedule. These metals concentration found in fish and seafood were also considered to be lower compared with literature in other studies. Thus, these concentration levels should result in no acute toxicities of heavy metals since they are lower than the limit. It was concluded that heavy metals concentration level in commercial fish and seafood must be monitored comprehensively and periodically with respect to the consumer health.
format	Thesis
qualification_level	Master's degree
author	Saim, Hafizah
author_facet	Saim, Hafizah
author_sort	Saim, Hafizah
title	Determination of heavy metals in fish and seafood
title_short	Determination of heavy metals in fish and seafood
title_full	Determination of heavy metals in fish and seafood
title_fullStr	Determination of heavy metals in fish and seafood
title_full_unstemmed	Determination of heavy metals in fish and seafood
title_sort	determination of heavy metals in fish and seafood
granting_institution	Universiti Sains Malaysia
granting_department	Pusat Pengajian Sains Kesihatan
publishDate	2011
url	http://eprints.usm.my/52250/1/HAFIZAH%20BINTI%20SAIM-24%20pages.pdf
_version_	1747822153473982464

Determination of heavy metals in fish and seafood

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