GC-MS Determination of Hexabromocyclododecane in Coatings

A method for the determination of hexabromocyclododecane (HBCD) in coatings by GC-MS was proposed. Sample was ultrasonically extracted with dichloromethane-acetone (1+1) mixed solvent, purified by passing through silica gel solid phase extraction column, and quantitatively concentrated with parallel evaporation instrument. DB-5MS capillary column was used for separation, and full-scanning mode and selected ion monitoring mode were adopted in MS determination. Linear relationship between values of peak area and mass concentration of HBCD was kept in the range of 1-50 mg·L-1, with lower limit of determination (10S/N) of 10 mg·kg-1. Tests for recovery were made at the concentration levels of 5, 20, 50 mg·L-1 of HBCD standard, giving values of recovery and RSD′s (n=8) in the ranges of 82.0%-106% and 2.8%-5.3% respectively.