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Articles by M.S. Mohd Zahir
Total Records ( 2 ) for M.S. Mohd Zahir
  B.Y. Kamaruzzaman , M.S. Mohd Zahir , B. Akbar John , K.C.A. Jalal , S. Shahbudin , S.M. Al-Barwani and J.S. Goddard
  A study was conducted to determine the bioaccumulation of some essential and non-essential heavy metals by the soft tissue of Perna viridis (Green mussel) collected from Pekan, Pahang during November 2009. A total of fifty individuals of Green lipped mussel P. viridis (Family: Mytilidae) were sampled and metals such as Iron (Fe), Zinc (Zn), Copper (Cu), Cobalt (Co), Lead (Pb) and Cadmium (Cd) concentration were determined using Inductively Coupled Plasma Mass Spectrometry (ICP-MS). The observed mean concentration of Fe, Zn, Cu, Co, Pb and Cd in the soft edible tissue of P. viridis was 576.45±87.78, 45.54±8.75, 19.05±4.12, 17.85±2.28, 0.47±0.14 and 0.3±0.06 μg g-1, respectively. The bioaccumulation of metals in the soft tissue flowed in Fe>Zn>Cu >Co>Pb>Cd order indicating that the essential heavy metal accumulates in faster rate than non-essential metals. Comparison with earlier studies showed that Fe and Cu bioaccumulation level was higher in samples from Pekan area with average of 576.45 and 19.05 μg g-1, respectively. All the other metals concentration was lower in the soft tissue of green mussel indicating comparatively lower heavy metal contamination in the Pekan, Pahang compared with other coasts.
  B.Y. Kamaruzzaman , A. Siti Waznah , M.S. Mohd Zahir , M.C. Ong , S. Shahbudin , K.C.A. Jalal , Z. Rina Sharlinda , A.T. Shuhada , B. Akbar John , B. Joseph , S.M. Al-Barwani and J.S. Goddard
  Bottom sediments from 62 stations at Pahang river-estuary were analyzed for the concentrations of Chromium (Cr), Manganese (Mn) and Cobalt (Co). Heavy metal concentrations were analyzed by using an Inductively Coupled Plasma Mass Spectrometry (ICP-MS). The average dry weight concentrations of Cr, Mn and Co were 62.80±20.04, 416.21±127.41 and 7.93±3.25 μg g-1, respectively. The observed concentrations of the studied metals were significantly higher near the estuary and declining as the sampling points were further away from the estuary. The Enrichment Factors (EFs) were calculated and all elements showed metal contamination was predominantly of terrigenous in origin.
 
 
 
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