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NIOSH Analytical Method, Methyl Chloride, S99, (Set 2).
NIOSH 1977 Jul:9 pages
The method is described for determining methyl-chloride (74873) in the air, including the principle, range and sensitivity, interferences, precision and accuracy, advantages and disadvantages, apparatus, reagents, calibration and standards, and calculations. The principle is based upon gas chromatography of samples collected on activated coconut charcoal with desorption with methylene- chloride. The range is 59-220ppm for an eight hour time weighted average and 143-580ppm for peak detection, with a precision of 0.052 (coefficient of variation). The OSHA standard is 100ppm eight hour time weighted average, 200ppm for a ceiling concentration, and 300 ppm for a peak concentration.
NIOSH-Author; NIOSH-Analytical-Method; Standards-Completion-Program; SCP; Analytical-Method; Standards; Sampling; Set-2; Air-quality-measurement; Air-sampling; Procedures; Exposure-limits; Explosives; Chlorinated-hydrocarbons; Anesthetics; Chloromethanes;
Division of Physical Sciences and Engineering, NIOSH, Cincinnati, Ohio, 9 pages, 4 references
Page last reviewed: May 5, 2020
Content source: National Institute for Occupational Safety and Health Education and Information Division