The cations and 2 2 anions must be equal to maintain

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Unformatted text preview: 05 23rd-25th June 2010 3rd ICYC 2010 Universiti Sains Malaysia ENV-P7 LEACHING OF ANTIMONY FROM PET BOTTLES PLASTIC OF INDONESIA, JAPAN, FRANCE AND USA COMPANY 1 Aster Rahayu, Rahmiana Zein, Refilda Suhaili, and Kazuhiro Toyoda 1 1 2 1 Department of Chemistry, Faculty of Mathematic and Natural Science Andalas University, Padang, Indonesia 2 Graduate School of Environmental Earth Science Hokkaido University, Japan E-mail: aster_kkot@yahoo.com The existence of antimony in the PET bottles can be caused by the utilization of it as a catalyst of polycondensation reaction to produce polyethylene terephthalate. The concentration of antimony leaching into the water from seven commercials brand PET bottle plastic of mineral water from Indonesia, three commercials brand PET bottle of mineral water from Japan, two commercials brand PET bottle of mineral water from France and one commercials brand PET bottle of mineral water from USA have been investigated using Inductive Couple Plasma Hydride Generator A tomic Emission Spectroscopy (ICP-HG-AES). The concentration of antimony in the PET bottle plastic samples from Indonesia, Japan, France and USA companies were determined using Irradiation Neutron Activation Analysis (INAA) which ranged from 172 – 296 ppm. The samples were stored below room temperature, 40, 50, 60 and 70 °C. In the room temperature and 40 °C after keeping until 8 weeks still cannot determine the concentration of antimony. The average concentration of antimony for all samples stored below 50 °C was 0.3 - 1.1 ppb for 6 weeks. The average concentration of antimony for all samples stored below 60 °C was 0.3 - 1.1 ppb for 6 weeks 0.3 - 3.8 ppb for 6 weeks. The average concentration of antimony for all samples stored below 70 °C was 0.3 - 1.1 ppb for 6 weeks and 0.7 - 3.8 ppb for 3 weeks. ENV-P8 EFFECT OF AERATION AND NON AERATION TREATMENT IN MULTI SOIL LAYERING (MSL) SYSTEM TO DECREASE WATER POLLUTANT OF MUARA RIVER PADANG -WEST SUMATRA Aulia Indah Pratiwi, Rahmiana Zein, Hermansyah Aziz, Refilda Suhaili and Edison Munaf Departmen...
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This note was uploaded on 02/17/2011 for the course CHEMISTRY 101 taught by Professor Csr during the Spring '11 term at University of Louisville.

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