High-Resolution Gas Chromatography-Mass Spectrometric Analysis for PBDD/PBDF/PBDE in Environmental Matrices

• Main Authors: Jui-Hwa Peng, 彭瑞華
• Other Authors: Cheanyeh Cheng
• Format: Others
• Language: zh-TW
• Published: 2002
• Online Access: http://ndltd.ncl.edu.tw/handle/51869612228234986423

碩士 === 中原大學 === 化學研究所 === 90 === Modern technology has invented many heat resistant chemicals to reduce the probability of ignition of a wide range of textiles, plastics ,building materials, and electronic equipments used in commerce and in residential homes. Brominated organic compounds are the most widely used flame retardants in various products and at high concentrations. Most common are polybrominated diphenylethers (PBDEs), polybrominated biphenyls (PBBs), tetrabromobisphenol and hexabromodiphenyl cyclododecane. Commercialized PBDE flame retardants contain mainly penta-, octa-, and decabromo diphenylethers(PeBDEs, OBDEs and DeBDE). Recently, the toxicological work suggests that PBDEs have endocrine disrupting effects on the thyroid system, and can also affect the liver as well as the nervous and immune systems. Due to large consumption of flame retardants, hazardous wastes containing PBDEs were usually treated by the incinerator. Therefore, polybrominated dioxins and furans are formed from brominated flame retardants via thermal reactions. The primary objectives of this study were the complete separation of PBDDs/PBDFs and PBDEs and the analysis of them in real samples from municipal waste incinerator, electric arc furnace incinerator, fly ash/ bottom ash from municipal waste incinerator, soil samples and fish samples with a high-resolution gas chromatography-mass spectrometer. Several columns were tested, including multilayer silica column, acid silica column, silver nitrate silica column, acid alumina column and activated carbon column. Several real environmental matrices of PBDEs and PBDDs/PBDFs including municipal waste incinerator, electric arc furnace incinerator, fly ash/ bottom ash from municipal waste incinerator, soil samples and fish samples were identified and quantified with GC/MS. The reaults show that activated carbon column can separate PBDDs/PBDFs and PBDEs completely. The PBDEs concentration of municipal waste incinerator, electric arc furnace incinerator and fish samples are higher at about ppb levels. None of the tested matrices for PBDDs/PBDFs is detected. Small amount of PBDDs/PBDFs from 0.079ng/m3 to 4.01ng/m3 in the municipal waste incinerator and the electric arc furnace incinerator have been detected already.