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OIL M IST, MIN ERA L: MET HO D 502 6, Issue 2, Rev. 15 M ay 1996 - Page 4 of 4 Issue 1 of this method (dated 8/15/1987) used Freon 113 as the solvent. However, since Freons are known atm ospheric ozo ne depleters, c arbon tetrachloride, the orig inal solvent used in P&CAM 283, is again specified, althou gh it is a s usp ecte d hu m an c arcinogen. PTFE filters (e.g. G elm an Ze fluor) als o m ay be used to sam ple oil mists. They have lower blanks than PVC, since PTFE has fewer extractables with CCl4 than other mem brane filters.

REFERENCES: [1] [2] [3] [4] [5]

Docum entation of the NIOSH Validation Tests, S272, U.S. Department of Health, Education, and W elfare , Pub l. (NIO SH ) 77-185 (197 7), available a s PB 274 -248 from NT IS, Sp ringfield, VA 22161. Bolyard, M L. Infrared Quantitation of Mineral Oil Mist in Personal Air Samples, AIH Conference, Hous ton, TX (19 80). NIOSH M anual of Analytical Methods, 2nd ed., Vol. 4, P&CAM 283, U.S. Department of Health, Educa tion, and W elfare, Publ. (NIOSH ) 78-175 (197 8). Ibid., Vol. 1, P&CAM 159, U.S. Department of Health, Education, and W elfare, Publ. (NIOSH) 77-157-A (1977). Ibid., Vol. 3, S272, U.S. Depa rtmen t of Health, Education, and W elfare, Publ. (NIOSH ) 77-157-C (1977).

METHOD REVISED BY: Charles Lorberau and Robert Glaser, NIOSH/DPSE.

NIOSH Manual of Analytical Methods (NMAM), Fourth Edition

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