Malays. Appl. Biol. (2006) 35(2): 35–40
ELEVATED HEAVY METAL CONCENTRATIONS IN SURFACE SEDIMENTS COLLECTED FROM THE DRAINAGES OF THE SRI SERDANG INDUSTRIAL AREA, MALAYSIA
YAP, C.K.*, ISMAIL, A., PANG, B.H., YEOW, K.L., TAN, S,G. and SIRAJ, S.S.
Department of Biology, Universiti Putra Malaysia, Serdang, Selangor, Malaysia.
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ABSTRACT
The surface sediments were collected from the drainages and rivers of the Sri Serdang Industrial area at six sampling sites in August 2005. The samples were analyzed for total concentrations of Cd, Cu, Pb, Zn and Ni by using the aqua-regia method. The heavy metal concentrations (ug/g dry weight) ranged from 169.3 to 296.3 for Zn, 56.1 to 404.3 for Pb, 2.40 to 10.2 for Cd, 43.0 to 551.2 for Cu and 35.4 to 582.3 for Ni. A sampling site near to a metal manufacturing factory recorded the highest concentrations of Zn, Pb, Cd, Cu and Ni. In addition, these metal ranges were much higher than those reported for other polluted sites in the west coast of Peninsular Malaysia reported by Yap et al. (2002, 2003). Since these metal concentrations were higher than the Interim Sediment Quality Values- high (ISQVs-high) for Hong Kong (Chapman et al., 1999) and Interim Freshwater Sediment Quality Guidelines for Canada (CCME, 2002), these elevated metal concentrations are most likely contributed by nearby industrial activities. Therefore, further ecotoxicological research on heavy metal pollution in the Sri Serdang Industrial area is necessary.
ABSTRAK
Sedimen permukaan telah disampel dari longkang dan sungai di kawasan Perindustrian Sri Serdang di enam tempat pada Ogos 2005. Sampel-sampel tersebut telah dianalisa untuk kepekatan bagi Cd, Cu, Pb, Zn dan Ni dengan menggunakan kaedah ‘aqua-regia’. Kepekatan (ug/g berat kering) logam berat berjulat daripada 169.3 ke 296.3 bagi Zn, 56.1 ke 404.3 bagi Pb, 2.40 ke 10.2 bagi Cd, 43.0 ke 551.2 bagi Cu dan 35.4 ke 582.3 bagi Ni. Tempat persampelan berdekatan dengan sebuah kilang pembuatan logam dicatatkan kepekatan tertinggi bagi Zn, Pb, Cd, Cu dan Ni. Tambahan, julat logam tersebut adalah melebihi data yang dilaporkan oleh Yap et al. (2002, 2003) bagi kawasan tercemar di persisiran pantai barat Semenanjung Malaysia. Memandangkan tahap logam-logam ini melebihi Nilai Tinggi Interim Kualiti Sedimen bagi Hong Kong (Chapman et al., 1999) and Panduan Interim Kualiti Sedimen Air Tawar oleh Canada (CCME, 2002), kepekatan tinggi bagi logam berat ini adalah disebabkan oleh aktiviti perindustrian yang berdekatan. Oleh itu, kajian ekotoksikologi di di kawasan Perindustrian Sri Serdang perlu dijalankan pada masa depan.
Key words: Heavy metal pollution, drainages and rivers, Serdang Industrial area.
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