Page:NIOSH Manual of Analytical Methods - 1550.pdf/4

 NAPHTHAS: METHOD 1550, Issue 2, dated 15 August 1994 - Page 4 of 5

Method

Overall Precision ( SˆrT)

S86 (b) S380 (a) S382 (b) NOTES:

0.051 0.052 0.052

Bias 5.99% -4.37% -3.10%

Range Studied Accuracy mg/m 3 ±15.0% ±12.5% ±11.4%

193 to 809 937 to 3930 1417 to 5940

mg per sample 2 to 8 4 to 16 4.5 to 18

Avg. DE

Ref.

0.88 0.96 0.95

[1,2] [1,3] [1,4]

(a) Data based on experiments using an internal standard method with a 10 ft., 1/8" stainless steel column packed with 10% OV-101 on 100/120 mesh Supelcoport. (b) Data based on experiments using an internal standard method with a 6 ft., 1/8" stainless steel column packed with 1.5% OV-101 on 100/120 mesh Chromosorb W.

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

Documentation of the NIOSH Validation Tests, S86, S380, S382, U.S. Department of Health, Education, and Welfare, Publ. (NIOSH) 77-185 (1977). NIOSH Manual of Analytical Methods, 2nd ed., V. 2, Method S86, U.S. Department of Health, Education, and Welfare, Publ. (NIOSH) 77-157-B (1977). Ibid, V. 3, S380, U.S. Department of Health, Education, and Welfare, Publ. (NIOSH) 77-157-B (1977). Ibid, S382. Criteria for a Recommended Standard...Occupational Exposure to Refined Petroleum Solvents, U.S. Department of Health, Education, and Welfare, Publ. (NIOSH) 77-192 (July, 1977).

METHOD REVISED BY: Ardith A. Grote, NIOSH/DPSE; S86, S380 and S382 originally validated under NIOSH Contract CDC-99-74-55.

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