Wang Dongli, Xu Xiaobai, Chu Shaogang, Zhang Daren
Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, P.O. Box 2871, 100085 Beijing, PR China.
Chemosphere. 2003 Nov;53(5):495-503. doi: 10.1016/S0045-6535(03)00507-1.
Chlorinated polycyclic aromatic hydrocarbons (Cl-PAHs) released from combustion of polyvinylchloride (PVC) at different furnace temperatures were investigated. A laboratory-scale tube-type furnace with electric heating was utilized to control combustion conditions. Glass fabric filters and adsorbents were used to collect the combustion emissions. Following Soxhlet extraction, concentration and column chromatography purification, isomers separation, selective detection and identification of Cl-PAHs were performed on GC/MS system on the basis of retention data and mass spectra. Their quantification was accomplished by using external standard calibration technique. About 18 Cl-PAHs were determined, most of which were monochlorinated derivatives of naphthalene, biphenyl, fluorene, phenanthrene, anthracene, fluoranthene and pyrene. Only two dichlorophenanthrenes or anthracenes were identified. The possible positions of chlorine atoms attached to the aromatic rings are predicted by quantitative structure-property relationship. The levels of these compounds were in the range of 0.30-29.08 microg/g PVC. The relationship between the formation of Cl-PAHs and PAHs was discussed.
研究了聚氯乙烯（PVC）在不同炉温下燃烧释放的氯化多环芳烃（Cl-PAHs）。利用实验室规模的电加热管式炉来控制燃烧条件。使用玻璃纤维过滤器和吸附剂收集燃烧排放物。经过索氏提取、浓缩和柱色谱纯化后，基于保留数据和质谱，在气相色谱/质谱系统上对Cl-PAHs进行异构体分离、选择性检测和鉴定。通过外标校准技术完成它们的定量分析。测定了约18种Cl-PAHs，其中大多数是萘、联苯、芴、菲、蒽、荧蒽和芘的单氯衍生物。仅鉴定出两种二氯菲或二氯蒽。通过定量结构-性质关系预测了氯原子连接在芳环上的可能位置。这些化合物的含量在0.30 - 29.08微克/克PVC范围内。讨论了Cl-PAHs与多环芳烃形成之间的关系。
