Chlordane (octachloro-3a,4,7,7a-tetrahydro-4,7-methanoindane and isomers) (Failure Report No. S278)

摘要

The NIOSH analytical method S278 for determining chlordane (57749) in air is described. Samples are collected on a mixed cellulose ester membrane filter and chromosorb-102 sorbent, extracted with toluene, and analyzed by gas chromatography with an electron capture detector. The working range of the method is 0.156 to 1.17 milligrams per cubic meter, the coefficient of variance is 0.07, and the detection limit is 0.4 micrograms per sample. Analytical apparatus, reagents and procedures are described, and calculations are provided for determining sample concentrations. Data on calibrations curves, and recovery, stability and breakthrough rates is included along with results of particle distribution tests.