Anisidine (o,p-isomers) Analytical Method (S163)

摘要

The NIOSH analytical method S163 for determining ortho-anisidine (90040) and para-anisidine (104949) in air is described. Samples are collected on XAD-2, desorbed with methanol, and analyzed by high pressure liquid chromatography. The working range of the method is 0.25 to 16.0 milligrams per cubic meter, the coefficient of variance is 0.068, and the detection limit is 0.35 micrograms per sample for either isomer. Analytical apparatus, reagents and procedures are described, and calculations are provided for determining the quantity of isomer in the sample. Data on recovery, stability and breakthrough rates is included.