1081 8 archive 2 disk0/00/00/10/81 2007-11-13 17:22:21 2007-11-13 17:22:21 2007-11-13 17:22:21 article show Norela Sulaiman Maimon Abdullah Mohd. Rozali Othman Universiti Kebangsaan Malaysia, Faculty of Science & Technology, Centre for the Study of Environmental Science and Natural Resources Universiti Kebangsaan Malaysia, Faculty of Science & Technology, School of Chemical Science and Food Technology pub Q none Air sampling pump, Plumbum, Cadmium, Nitrate, Ammonium Author acknowledges Tenaga Nasional Berhad Research (TNBR) for financing the research project. Gratitude to Fauzan, Zainal, Yushaury, Fazan, Din dan Zulfadhly for helping in the sampling. Also acknowledges Universiti Putra Malaysia (UPM), MARDI, SJS Serdang Power Station, Sekolah Rendah Agama Datok Abu Bakar Baginda, Sepang for their cooperation in the project LaMotte air sampling pump was used to monitor air that may contains metals, anions and cations in the atmosphere. Concentration of volatile plumbum (Pb) and cadmium (Cd) was determined by atomic absorption specktrophotometer furnace graphite Model 4100 ZL, while concentration of nitrate (NO3-) dan ammonium (NH4+) were determined by HACH DR 2010 spectrophotometer. Results showed that only the diurnal pattern of Pb was close to the permitted level suggested by Department of Environment that is 1.5 µgm-3 and diurnal pattern of other chemicals species exceeded their background of concentration. Pam udara LaMotte telah digunakan untuk menyerap udara yang berkemungkinan mengandungi logam, anion dan kation di atmosfera. Kepekatan plumbum (Pb) dan kadmium (Cd) dalam bentuk meruap ditentukan menggunakan spektrofotometer serapan atom Perkin Elmer-relau grafit Model 4100 ZL manakala kepekatan nitrat (NO3-) dan ammonium (NH4+) ditentukan dengan menggunakan spektrofotometer HACH DR 2010. 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