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 CHLOROACETIC ACID: METHOD 2008, Issue 2, dated 15 August 1994 - Page 4 of 4 The breakthrough volume of the 100-mg sorbent section was found to be >100 L at 0.2 L/min when sampling chloroacetic acid concentrations of 60 mg/m 3 at 42 °C and RH of 10 and 80% and 35 mg/m 3 at 27 °C and 10 and 90% RH. Samples stored at ambient temperature for 7 days had a mean recovery of 91% and a precision, S r, of 0.047. Samples refrigerated after day 7, and stored for 32 days exhibited a mean recovery of 100% with a precision, S r, of 0.085 based on samples analyzed on day 1.

REFERENCES: [1]

[2] [3] [4]

Dillon, H. K., D. W. Mason, and K. W. Boyd. Development of Air Sampling and Analytical Methods for Toxic Chlorinated Organic Compounds: Research Report for Monochloroacetic Acid, NIOSH Contract 210-78-0012, Southern Research Institute, Birmingham, AL (1980). NIOSH Manual of Analytical Methods, 2nd ed., Vol. 6, P&CAM 322, U.S. Department of Health and Human Services, Publ. (NIOSH) 80-125 (1980). McCullough, P. R. and J. W. Worley. "Sampling of Chloroacetyl Chloride in Air on Solid Support and Determination by Ion Chromatography," Anal. Chem., 51, 1120-1122 (1979). Merck Index, 11th ed., Merck & Co., Rahway, NJ (1989).

METHOD REVISED BY: Mary Ellen Cassinelli, NIOSH/DPSE.

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