As shown in wikipedia, the Halogen bond is the non-covalent interaction that occurs between a halogen atom (Lewis acid) and a Lewis base. The Hydrogen bond could be seen as a special case of halogen bond — they all need electron-donor while the hydrogen may also need electron-receptor. In fact, some Organic Halogen Compounds such as PCBs, PBDEs,PFCs,SCCPs… were hard to analysis for they have so many congeners. Most of time, the capillary columns were used to separate those compounds. However, when we use the capillary columns …