Abstract
An analytical method was developed for the quantification of a low level of 1,2-dichloropropane in workplace air using a sampler containing 200 mg Porapak QS and thermal desorption - gas chromatography/flame ionization detector analysis. Air was drawn into the sampler to sample 1,2-Dichloropropane at a flow rate of 200 mL/min for 10 min.
The breakthrough time was longer than 60 min. The thermal desorption efficiency was close to 100%, and the recovery rate of 1,2-dichloropropane did not decrease after storage for 10 days at room temperature. The calibration curve was linear in the range 2.41 to 151 ppb of 1,2-dichloropropane concentration in the air. The lower limit of quantitation of this method is 1.30 ppb for a sampling volume of 2 L, which is lower than 1/10 of the target value of 35 ppb.
1,3-dichloropropane can be analyzed by the present method.
