Pesticide Analytical Manual Vol I TABLE 302-a Table 302-a: Recovery of Chemicals Through Method 302 (E1-E3+DG1-DG19 acetone extraction, partitioning or Hydromatrix removal of water, GLC determination with various columns and detectors) Recovery Notes (4-chlorophenyl)-urea 1, 2, 4, 5-tetrachloro-3-(methylthio)benzene R 2. 4-triazole n detector required 2.3.5-trimethacarb n detector required 2, 4, 5-trichloro-alpha-methylbenzenemethanol R 2. 4-dichloro-6-nitrobenzenamine C(110%) n=1 2. 6-dichlorobenzamide 2-chloroethyl myristate 2-methoxy-3, 5, 6-trichloropyridine cCcc Low temperature column recommended 3, 4, 5-trimethacarb n detector required 3. 4-dichloroaniline V(4484%) 3. 5-dichloroaniline S(1562%) 3(3, 4-dichlorophenyl)-l-methoxyure GLC not reliable for quantitation 3-carboxy-5-ethoxy-l, 2, 4-thiadiazole NR 3-chloro-5-methyl--nitro-1H-pyrazole OV-101 peak tails severely g-ketocarbofura S(0-150%) 3-methyl-4-nitrophenol V(65-153%) Interferences from sample extract may have caused variable results 4-hydroxy bifenthrin High temperature GLC column required 4-(dichloroacetyl)-1-oxa-4-azapiro[4.5]decane C Low level (0.05 Ppm)fortification in corn grain obscured by matrix. 4-chlorobenzenamine S(2343%) 4-chlorophe S(10-29%) Poor EC detector sensitivity; halogen-selective detector required 6-benzyladenine n detector required acephate Wide bore or degs column required acetochlor ccc acrinathrin V(80-136%) Codes: C: complete(>80%); P: partial (50-80%);: small (<50%); V: variable(approximate percentage when know R: recovered but no quantitative information available; NR: 2 Notes assume that extract is examined by GlC with columns at 200 C and, at a minimum, halogen-selective detector(DG3 or 16)and phosphorus-selective detectors(DG2 or 14 or 19). Notes indicate those chemicals that can be determined only by se of columns, temperatures, and/ or detectors other than the minimal ones. Transmittal No 2000-1(10/1999) TABLE 302-a-TABLE 302-a—1 Pesticide Analytical Manual Vol. I TABLE 302-a Transmittal No. 2000-1 (10/1999) Form FDA 2905a (6/92) 1 Codes: C: complete (>80%); P: partial (50-80%); S: small (<50%); V: variable (approximate percentage when known); R: recovered but no quantitative information available; NR: not recovered. 2 Notes assume that extract is examined by GLC with columns at 200° C and, at a minimum, halogen-selective detector (DG3 or 16) and phosphorus-selective detectors (DG2 or 14 or 19). Notes indicate those chemicals that can be determined only by use of columns, temperatures, and/or detectors other than the minimal ones. Table 302-a: Recovery of Chemicals Through Method 302 (E1-E3 + DG1-DG19) (acetone extraction, partitioning or Hydromatrix removal of water, GLC determination with various columns and detectors) Chemical Recovery1 Notes2 (4-chlorophenyl)-urea NR 1,2,4,5-tetrachloro-3-(methylthio)benzene R 1,2,4-triazole V N detector required. 2,3,5-trimethacarb C N detector required. 2,4,5-trichloro-alpha-methylbenzenemethanol R 2,4-dichloro-6-nitrobenzenamine C (110%) n=1 2,6-dichlorobenzamide C 2-chloroethyl myristate C 2-methoxy-3,5,6-trichloropyridine C Low temperature column recommended. 3,4,5-trimethacarb C N detector required. 3,4-dichloroaniline V (44-84%) 3,5-dichloroaniline S (15-62%) 3-(3,4-dichlorophenyl)-1-methoxyurea R GLC not reliable for quantitation. 3-carboxy-5-ethoxy-1,2,4-thiadiazole NR 3-chloro-5-methyl-4-nitro-1H-pyrazole C OV-101 peak tails severely. 3-ketocarbofuran S (0-150%) 3-methyl-4-nitrophenol V (65-153%) Interferences from sample extract may have caused variable results. 4'-hydroxy bifenthrin C High temperature GLC column required. 4-(dichloroacetyl)-1-oxa-4-azapiro[4.5]decane C Low level (0.05 ppm) fortification in corn grain obscured by matrix. 4-(phenylamino)phenol C 4-chlorobenzenamine S (23-43%) 4-chlorophenoxyaniline S (10-29%) Poor EC detector sensitivity; halogen-selective detector required. 6-benzyladenine C N detector required. acephate C Wide bore or DEGS column required. acetochlor C acrinathrin V (80-136%)