Ten NIOSH Analytical Methods - Sodium Fluoroacetate.
NIOSH 1979 Apr:22 pages
The NIOSH validated method for the determination of sodium- fluoroacetate (62748) (NAF) is described. Four hundred eighty liters of air (flow rate at 1.5 to 2.0 liters per minute) is drawn through a cellulose ester membrane filter to collect the NAF. The filter is placed in a 20 milliliter (ml) vial and extracted with 5ml of deionized water. Ten microliters of the solution are analyzed by ion chromatography using electrolytic conductivity detection. The height of the sample peak is measured. The concentration of NAF is determined by comparison with a calibration curve obtained by analyzing standards having concentrations of 0.1 to 3 times the OSHA standard of 0.05 milligrams per cubic meter (mg/m3). Storage ability tests are conducted with samples trapped on the filters. Only 89.1 percent of the NAF is recovered after 1 week of storage. The useable range of the method is 0.020 to 0.137mg/m3, with a standard deviation of 0.003mg/m3. The detection limit is 1 microgram NAF per sample filter. It is recommended that the filters be desorbed immediately upon collection to avoid loss of sample.
NIOSH-Author; NIOSH-Analytical-Method; Analytical-Method; Standards; Sampling; Standards-Completion-Program; SCP; Set-7; Chromatographic-analysis; Electrochemical-analysis; Fluoride-compounds;
NTIS Accession No.
Division of Physical Sciences and Engineering, NIOSH, U.S. Department of Health and Human Services, Cincinnati, Ohio 22 pages, 7 references