The NIOSH analytical method S148 for determining methylamine (74895) in air is described. Samples are collected on silica-gel (10193369) and are analyzed by ion chromatography using electrolytic conductivity detection. The working range of the method is 6.24 to 28.1 milligrams per cubic meter, the coefficient of variance is Analytical apparatus, reagents and procedures are described and calculations are provided for determining sample concentrations. Data on recovery, stability and breakthrough rates is included.
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