Page:NIOSH Manual of Analytical Methods - 5039.pdf/3

 CHLORINATED CAMPHENE: METHOD 5039, Issue 1, dated 15 August 1994 - Page 3 of 3 MEASUREMENT: 9.

10.

Set gas chromatograph according to manufacturer's recommendations and to conditions given on page 5039-1. Inject 5-µL aliquots manually using solvent flush technique or with autosampler. NOTE: If peak areas are outside the calibration range, make dilution of sample or standard solution, analyze and apply the dilution factor in calculations. Sum the peak areas in the retention time band. Use bulk sample to identify the appropriate retention time band.

CALCULATIONS: 11. 12.

Determine the mass, µg (corrected for R), of chlorinated camphene found in each sample (W) and average media blank (B). Calculate concentration, C, of chlorinated camphene in the air volume sampled, V (L):

EVALUATION OF METHOD: This method was evaluated over the range 0.22 to 1.2 mg/m 3 at 22 °C and 761 mm Hg using 15-L samples [1]. No reference method was used. The collection efficiency for the filters was found to be 1.0 using a challenge concentration of 1.3 mg/m 3 for 30 L. Average recoveries of chlorinated camphene from cellulose ester filters were 91% to 98% in the range 0.7 to 14 µg per sample. Cassettes were found to be unsuitable for storage of 0.7 µg chlorinated camphene on filters for 1 day at room temperature.

REFERENCES: [1]

[2] [3] [4]

Documentation of the NIOSH Validation Tests, S67, U.S. Department of Health, Education, and Welfare, Publ. (NIOSH) 77-185 (1977), available as Stock No. PB 274-248 from NTIS, Springfield, VA 22161. NIOSH Manual of Analytical Methods, 2nd. ed., V. 2, S67, U.S. Department of Health, Education, and Welfare, Publ. (NIOSH) 77-157-B (1977). Thomas, Thomas C.; Nishioka, Yoshimi A., "Sampling of Airborne Pesticides using Chromosorb 102," Bull. Environ. Contam. Toxicol. , 35(4), 460-5 (1985). NIOSH/OSHA Occupational Health Guidelines for Chemical Hazards, U.S. Department of Health and Human Services, Publ. (NIOSH) 81-123 (1981), available as Stock No. PB 83-154609 from NTIS, Springfield, VA 22161.

METHOD REVISED BY: James E. Arnold, NIOSH/DPSE; Method S67 originally developed under NIOSH Contract CDC-99-74-45.

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