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Unformatted text preview: analyte enrichments and only few microliters of organic solvents are required. In particularly the SBME is a simple approach however, except 1 -octanol, other solvents are not retained after 30 min extraction time. To overcome this problem, for the first time a thicker hollow fiber membrane (Accurel polypropylene membrane V8/2) was used for SBME technique. Various organic extractant solvent (toluene, xylene, nonane, carbon tetrachloride and chloroform) were confined within a short length of a hollow fiber membrane (sealed at both ends) that was placed in a stirred aqueous sample solution. Tumbling of the extraction device within the sample solution facilitated extraction. Organophosphorus pesticides were used as model compounds and the extraction conditions were optimized. Finally, the method was applied to complex samples such as fruit beverages from the local market. 87 23rd-25th June 2010 3rd ICYC 2010 Universiti Sains Malaysia ORAL PRESENTATION (ENVIRONMENTAL) ENV-O1 DETERMINATION OF HAZARDOUS TRACE METALS IN MIXED PLASTICS WASTE 1* Mohammad N. Siddiqui, Mohammad A. Gondal and Mohammed M. Nasr 2 3 2 Department of Chemistry, King Fahd University of Pet roleum & Minerals, Dhahran, Saudi Arabia Laser Research Laboratory, Physics Department and Center of Nanotechnology (CENT), King Fahd University of Petroleum & Minerals, Dhahran 31261, Saudi Arabia 3 Department of Natural Sciences, College of Dentistry and Pharmacy, Riyadh 11671, Saudi Arabia E-mail: mnahid@kfupm.edu.sa 1 The plastic production has increased almost 10 % every year on global basis thus generating huge plastics wastes. The total global production of plastics has grown from around 1.3 million tones (MT) in 1950 to 245 MT in 2006. The highest consumption of plastics around 30 MT was found in USA against worldwide consumption of 170 MT in 2003 and is expected to rea ch to 39 MT by 2010. Western Europe estimated the annual total consumption of plastic products at 48.8 million tons for 2003 and generatin...
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