Page:NIOSH Manual of Analytical Methods - 500124-D.pdf/4

 2,4-D AND 2,4,5-T: METHOD 5001, Issue 2, dated 15 August 1994 - Page 4 of 4

Method S279 S303

Overall Precision (SˆrT)

Range Studied Recovery mg/m 3 mg per sample @ 0.5 mg

0.051 0.053

5 to 20 5 to 21

0.5 to 2 0.5 to 2

0.97 0.86 to 0.99

7-Day Storage Stability, % of Day 1 99 104

REFERENCES: [1] Backup Data Report S279 for 2,4-D prepared under NIOSH Contract No. 210-76-0123 (unpublished, 1976), available as "Ten NIOSH Analytical Methods, Set 6," Order No. PB 288-629 from NTIS, Springfield, VA 22161. [2] Backup Data Report S303 for 2,4,5-T prepared under NIOSH Contract No. 210-76-0123 (unpublished, 1976), available as "Ten NIOSH Analytical Methods, Set 6," Order No. PB 288-629 from NTIS, Springfield, VA 22161. [3] NIOSH Manual of Analytical Methods, 2nd ed., V. 5, U.S. Department of Health, Education, and Welfare, Publ. (NIOSH) 79-141 (1979). [4] Criteria for a Recommended Standard...Occupational Exposure During Manufactur and Formulation of Pesticides, U.S. Department of Health, Education, and Welfare, Publ. (NIOSH) 78-174 (1978).Welfare, Publ. (NIOSH) 79-141 (1979). [5] NIOSH Research Report-Development and Validation of Methods for Sampling and Analysis of Workplace Toxic Substances, U.S. Department of Health and Human Services, Publ. (NIOSH) 80-133 (1980).

METHOD REVISED BY: Robert W. Kurimo, NIOSH/DPSE; originally validated under NIOSH Contract No. 210-76-0123.

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