Page:NIOSH Manual of Analytical Methods - 7902.pdf/4

 FLUORIDES, aerosol and gas by ISE: METHOD 7902, Issue 2, dated 15 August 1994 - Page 4 of 4 EVALUATION OF METHOD: Measurement precision, Sr, in the range 0.055 to 0.22 mg HF per sample averaged 0.017 with average recovery 100.0% [2]. Analytical results on field samples report detection limits of 3 µg per sample for both gaseous and particulate fluorides [1]. Reported collection ranges for gaseous fluoride and particulate fluorides were 4 to 61 µg per sample and 4 to 410 µg per sample, respectively [10].

REFERENCES: [1] UBTL Reports, NIOSH/DPSE Analytical Sequence Nos. #2454, 2703, 3117 and 3366. Measurement Research Support Branch, NIOSH (unpublished). [2] Documentation of the NIOSH Validation Tests, S176, U.S. Department of Health, Education, and Welfare, Publ. (NIOSH) 77-185 (1977). [3] Ibid, P&CAM 117. [4] Jahr, J. A New Dual Filter Method for Separate Determination of Hydrogen Fluoride and Dustlike Fluorides in the Air. Staub-Reinhalt. der Luft, 32(6) 17 (1972). [5] Israel, G.W. Evaluation and Comparison of Three Atmospheric Fluoride Monitors under Field Conditions. Atmos. Environment, 8, 159 (1974). [6] Pack, M.R., A.C. Hill, and G.M. Benedict. Sampling Atmospheric Fluorides with glass Fiber Filters. J. Air Pollution Control Assoc., 13 (8), 374 (1963). [7] Einfeld, W. Investigation of a Dual Filter Sampling Method for the Separate Estimation of Gaseous and Particulate Fluorides in Air. Thesis (M.S., Public Health), Univ. of Washington (1977). [8] Einfeld, W. and S.W. Hoestmann. Investigation of a Dual Filter Sampling Method for the Gaseous and Particulate Fluorides. Am. Ind. Hyg. Assoc. J. 40(7), 626 (1979). [9] Abell, M. T. Evaluation of Methods for Fluorides, Internal Technical Report, NIOSH, DPSE (1975). [10] NIOSH Manual of Analytical Methods, 3rd ed., Method No. 7902 (Fluorides, Aerosol and Gas), Vol. I (1984). [11] Elfers, L.A. and C.E.Decker. Determination of Fluoride in Air and Stack Gas Samples by Use of an Ion Specific Electrode. Anal. Chem. 40, 1658 (1968). [12] NIOSH/OSHA Occupational Health Guidelines for Chemical Hazards, U.S. Department of Health and Human Services Publ. (NIOSH) 81-123 (1981), available as GPO Stock #17-033-00337-8 from Superintendent of Documents, Washington, DC 20402.

METHOD REVISED BY: Charles Lorberau, NIOSH/DPSE.

NIOSH Manual of Analytical Methods (NMAM), Fourth Edition, 8/15/94