关键词: 叔丁醇, 脱水反应, 异丁烯, 热力学, 平衡

Abstract: Short chain chlorinated paraffins (SCCPs), which are chlorinated derivatives of n-alkanes, are a group of complex mixtures that include 10—13 carbon atoms. They have some conmmon properties, such as environmental persistence, biotoxicity, bioaccumulation and long-distance transport. Having been considered as candidates to be added to the list on persistent organic pollutants (POPs) by the Stockholm Convention, SCCPs have been widely paid attention recently. In this paper, the physicochemical properties of SCCPs are described, and various analytical methods of SCCPs are compared, including gas chromatography with electron capture detector (GC-ECD), gas chromatography-electron impact ionization mass spectrometry (GC-EI/MS), and gas chromatography-electron capture negative chemical ion source low resolution mass spectrometry (GC-ECNI-LRMS). Meanwhile, the pollution occurrence of SCCPs in the global environment media (air, soil, sediment and water) and organisms is summarized. The pollution control technologies of SCCPs, including biodegradation, photodegradation and adsorption are discussed. Further, aiming at the problems in previous studies the future research directions are proposed to provide references for related study.

Key words: tert butyl alcohol, dehydration reaction, isobutene, thermodynamics, equilibrium