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71.
Shin-ichi Sakai Yukio Noma Akiko Kida 《Journal of Material Cycles and Waste Management》2007,9(2):151-158
The Japanese Government introduced the Law on Recycling of End-of-Life Vehicles (ELV Recycling Law) in 2002. This law requires
manufacturers to retrieve chlorofluorocarbons (CFCs), airbags, and automobile shredder residue (ASR) from ELVs and to properly
recycle the remaining materials. This framework is compared with European ELV directives. Pilot-scale incineration plant testing
has revealed a greater formation of by-product persistent organic pollutants (POPs) during the primary combustion of ASR compared
to normal municipal solid waste. This may be attributed to the abundance of chlorine, Cu, and Fe in ASR, as Cu and Fe have
been found to catalyze the formation of POPs under certain conditions. However, most by-product POPs were destroyed by the
secondary combustion, and almost all were removed after flue gas treatment. The direct melting system is a shaft-type gasification
and melting technology that has proved effective in many municipal solid waste applications. This system can be applied to
ASR recycling for effective decomposition of brominated flame retardants and polybrominated dioxins. 相似文献
72.
Optimization of the ionization conditions for the trace analysis of PCDD/PCDF with ion trap MS/MS 总被引:1,自引:0,他引:1
Commercial ion trap mass spectrometer provides easy-to-operate MS/MS analysis for the determination of PCDD/PCDF. The limit of quantification is appropriately low (0.2 pg for 23478-P5CDF) because all the stages are performed in the trap and sample losses associated with the ion transportation are minimized. However, if excessive ions are injected into the trap, its electrical fields are distorted and an overall reduction in performance arises. Ionization condition is an important parameter as it affects the amount of the total ions produced. If the amount of interfering compounds are negligible, such as standard solution or cleaned-up sample, lower ionization condition (e.g. electron energy: 30 eV, emission current (EC): 150 μA) is preferable. On the contrary, in case excessive interfering ions are coexisting with PCDD/PCDF, such as crude extract or semi-cleaned-up sample, the ionization condition should be high (e.g. electron energy: 90 eV, EC: 350 μA) for the reproductive quantification. 相似文献