COLUMN: 1% SP-1240DA ON SUPELCOPORT PROGRAM: 80°C AT INJECTION, IMMEDIATE 8°C/MIN TO 150°C HENO 2,4-DIMETHYLPHENOL 4-NITROPHENOL 20 24 28 NOTE: These criteria are based directly upon the method performance data in Table 4. Where necessary, the limits for recovery have been broadened to assure applicability of the limits to concentrations below those used to develop Table 4. TABLE 4.-METHOD ACCURACY AND PRECISION AS FUNCTIONS OF CONCENTRATION-METHOD 604 X'=Expected recovery for one or more measurements of a sample containing a concentration of C, in μg/L. Occupational Safety and Health, Publication No. 77-206, August 1977. 6. "OSHA Safety and Health Standards, General Industry," (29 CFR Part 1910), Occupational Safety and Health Administration, OSHA 2206 (Revised, January 1976). 7. "Safety in Academic Chemistry Laboratories," American Chemical Society Publication, Committee on Chemical Safety, 3rd Edition, 1979. 8. Provost, L. P., and Elder, R. S. "Interpretation of Percent Recovery Data,” American Laboratory, 15, 58-63 (1983). (The value 2.44 used in the equation in Section 8.3.3 is two times the value 1.22 derived in this report.) 9. ASTM Annual Book of Standards, Part 31, D3370-76. "Standard Practices for Sampling Water," American Society for Testing and Materials, Philadelphia. 10. "Methods 330.4 (Titrimetric, DPDFAS) and 330.5 (Spectrophotometric, DPD) for Chlorine, Total Residual," Methmds for Chemical Analysis of Water and Wastes, EPA-600/4-79-020, U.S. Environmental Protection Agency, Environmental Monitoring and Support Laboratory, Cincinnati, Ohio 45268, March 1979. 11. Burke, J. A. "Gas Chromatography for Pesticide Residue Analysis; Some Practical Aspects," Journal of the Association of Official Analytical Chemists, 48, 1037 (1965). 12. "Development of Detection Limits, EPA Method 604, Phenols," Special letter TABLE 2.- SILICA GEL FRACTIONATION AND ELECTRON CAPTURE GAS CHROMATOGRAPHY OF Column conditions: Chromosorb W-AW-DMCS (80/100 mesh) coated with 5% OV-17 packed in a 1.8 m long x 2.0 mm ID glass column with 5% methane/95% argon carrier gas at 30 mL/min flow rate. Column temperature held isothermal at 200 °C. MDL were determined with an ECD. 'Eluant composition: Fraction 1-15% toluene in hexane. Fraction 3-75% toluene in hexane. 40-144 0-90-12 NOTE: These criteria are based directly upon the method performance data in Table 4. Where necessary, the limits to recovery have been broadened to assure applicability of the limits to concentrations below those used to develop Table 4 TABLE 4.-METHOD ACCURACY AND PRECISION AS FUNCTIONS OF CONCENTRATION-METHOD 604 X'=Expected recovery for one or more measurements of a sample containing a concentration of C, in μg/L. |