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Failure Report No. S307.

Authors
Anonymous
Source
NIOSH 1979 Apr:24 pages
Link
NIOSHTIC No.
00107268
Abstract
The NIOSH analytical method S307 for determining warfarin (81812) in air is described. Samples are collected on a polytetrafluoroethylene filter, extracted with methanol, and analyzed by high performance liquid chromatography with an ultraviolet detector at 280 nanometers. The working range of the method is 0.054 to 0.244 milligrams per cubic meter, the coefficient of variance is 0.056, and the detection limit is about 0.5 micrograms per milliliter for a 20 microliter injection. Analytical apparatus, reagents and procedures are described, and calculations are provided for determining sample concentrations. Data on particle size distribution, collection efficiency, and recovery and stability rates is included. The method was unsatisfactory because the accuracy could not be adequately determined.
Keywords
NIOSH-Sampling-Data-Sheet; NIOSH-Backup-Data-Sheet; Pesticides; Air-contamination; Air-sampling; Plastics; Analytical-instruments; Ultraviolet-radiation;
CAS No.
81-81-2;
Publication Date
19790413
Fiscal Year
1979
NTIS Accession No.
PB81-240673
NTIS Price
A03
Source Name
NIOSH, Unpublished, Cincinnati, Ohio, 24 pages, 5 references
State
OH;
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