The samples were first extracted using ethyl acetate

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Unformatted text preview: was less than 4 min, compared to approximately 20 min by using a C 18 particlepacked column. Good linearity of the analytes were obtained over a concentration range of 0.02 – 0.50 -1 µg mL (with correlation coefficient of 0.9934 – 0.9990). The limits of detection and were 0.001 and -1 0.005 µg mL for So and Sa, respectively. This rapid method should be valuable for the assessment of the levels of So and Sa in biological fluids. 81 23rd-25th June 2010 3rd ICYC 2010 Universiti Sains Malaysia ANA-P12 EVALUATION OF METALS CONCENTRATIONS IN RED TILAPIA USING PRINCIPAL COMPONENT ANALYSIS Kah Hin Low, Sharifuddin Md. Zain and Mhd. Radzi Abas Environmental Research Group, Department of Chemistry, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia E-mail: lowkayin@um.edu.my Concentration of V, Mn, Fe, Co, Cu, Zn, As, Se, Cd and Pb were determined in muscle, liver and grill of red Tilapia (Oreochromis spp) samples collected from three different aquaculture system including earthen pond, ex-mining pool and concrete tank in Jelebu, Negeri Sembilan using microwave assisted digestion-inductively coupled plasma-mass spectrometry. Accumulation patterns between organs and elements, as well as between origins and elements were further evaluated with multivar iate statistics. With the aid of principal component analysis, it is possible to visualize the distribution pattern of metals in different organs as well as clustering tendencies of tilapia samples from different origins. Levels of V, Co, Fe, Cu, Zn, Se, Cd and Pb in liver were higher than those in muscle and grill, whereas Mn and Pb were higher in grill and As in muscle. Results from principal component analysis suggested that Cu, As and Pb were the most discriminating elements that enable the characteriza tion of studied organs, while V, Co and Pb were the best describers for sample origins. ANA-P13 SYNTHESIS AND CHARACTERIZATION OF BIS(3-METHOXY PHENOL HYDRAZONE) AND ITS APPLICATION 2+ FOR THE DETERMINATION OF Cu ION Marwan Shalash and Abdussala...
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