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%)
TABLE 302-a Pesticide Analytical Manual Vol I Table 302-a: Recovery Through 302 (E1-E3 +DG1-DG19) Chemical Recover Note lachlan aldrin llidochlor CCcccc Low temperature DEGS column used alpha-cypermethrin n or s detector required aminocarb n detector required amitraz S(070 Detector, high temperature column required. anilazine GLC response variable aramine atrazine azinphos-methyl DEGS column unsuitable azinphos-methyl oxygen analog bendiocarb n detector required bensulide cccccccccPcccccccvcccccc Results may be variable with certain GLCsystems benzoylprop-ethyl BF490-1 BF490-2 BF490-9 BHC. beta- BHC. delta bifenox bifenthrin (66-133%) binapacryl n detector required FID GLC with high temperature column, N/ detec- bromacil bromophos-ethyl TABLE 302-a--2 Transmittal No 2000-1(10/1
TABLE 302-a Pesticide Analytical Manual Vol. I TABLE 302-a—2 Chemical Recovery1 Notes2 Table 302-a: Recovery Through 302 (E1-E3 + DG1-DG19) Transmittal No. 2000-1 (10/1999) Form FDA 2905a (6/92) alachlor C aldrin C allidochlor C Low temperature DEGS column used. alpha-cypermethrin C ametryn C N or S detector required. aminocarb C N detector required. amitraz S (0-70%) N detector, high temperature column required. anilazine V GLC response variable. aramite C atrazine C azinphos-ethyl C azinphos-methyl C DEGS column unsuitable. azinphos-methyl oxygen analog C bendiocarb C N detector required. benfluralin C benodanil C benoxacor C bensulide C Results may be variable with certain GLC systems. benzoylprop-ethyl P (79%) BF 490-1 C BF 490-2 C BF 490-9 C BHC, alpha- C BHC, beta- C BHC, delta- C bifenox C bifenthrin V ( 66-133%) binapacryl C N detector required. biphenyl C FID required. bitertanol C GLC with high temperature column, N/P detector required. bromacil C bromophos C bromophos-ethyl C
Pesticide Analytical Manual Vol I TABLE 302-a Table 302-a: Recovery Through 302 (E1-E3+DG1-DG19) Recovery Notes bromopropylate bromuconazole BTS27919 n detector requirec Bulan bupirimate Cccccc n or s detector required butachlor V(77-90%) Detector required. V(7399%)n detector required cadusafos caparo Ccccc n detector required for GlC determination; GLC not the method of choice n detector required carbofuran n detector required for GlC determination GLC not the method of choice carbophenothion oxygen anal carbophenothion sulfone P(47-75%) Nor S detector required n or s detect CGA100255 S( 37-146%) n detector required, but response is poor. CGA118244 CGA14128 CGA150829 V(40-111%) Detector required; wide bore or DEGS column CGA171683 Detector, wide bore or dEGS columnrequired CGA37734 n detector required but response variable CGA91305 V(44-108%) n detector required. CGA 94689B s(39-94%) N detector required, but response varies widely with different columns CGA-232449 Needs n detector chlorbenside chlorbromuron V(73-100%) Transmittal No 2000-1(10/1999) Form FDA 2905a(6/92) TABLE 302-a--3
TABLE 302-a—3 Pesticide Analytical Manual Vol. I TABLE 302-a Chemical Recovery1 Notes2 Table 302-a: Recovery Through 302 (E1-E3 + DG1-DG19) Transmittal No. 2000-1 (10/1999) Form FDA 2905a (6/92) bromopropylate C bromuconazole C BTS 27919 C N detector required. Bulan C bupirimate C N or S detector required. butachlor C butralin V (77-90%) N detector required. butylate V (73-99%) N detector required. cadusafos C captafol C captan C carbaryl C N detector required for GLC determination; GLC not the method of choice. carbetamide C N detector required. carbofuran C N detector required for GLC determination; GLC not the method of choice. carbophenothion C carbophenothion oxygen analog C carbophenothion sulfone C carbosulfan P (47-75%) N or S detector required. carboxin C N or S detector required. CGA 100255 S (37-146%) N detector required, but response is poor. CGA 118244 V CGA 14128 C CGA 150829 V (40-111%) N detector required; wide bore or DEGS column recommended. CGA 171683 C N detector, wide bore or DEGS column required. CGA 37734 C N detector required but response variable. CGA 91305 V CGA 94689A V (44-108%) N detector required. CGA 94689B S (39-94%) N detector required, but response varies widely with different columns. CGA-232449 C Needs N detector. chlorbenside C chlorbromuron V (73-100%)
TABLE 302-a Pesticide Analytical Manual Vol I Table 302-a: Recovery Through 302 (E1-E3 +DG1-DG19) Chemical Recover Note chlorbufam chlordane chlordane. cis- Cccc chlordane. trans- chlordimeform hydrochloride V(64-119%) Recoveries performed with electron capture de- chlorfenapyr P(7382%) chlorfenvinphos, alpha- chlorfenvinphos, beta- ccc chlorflurecol methyl ester chlorimuron ethyl ester P(69-70%) chlormephos Low temperature column required chlornitrofen C(80%) chlorobenzilate chloroneb C Low temperature column required hlo P(64%) chlorothalonil Recovery may be 0% chlorothalonil trichloro impurity chlorpropham chlorpyrifos rios oxygen analog chlorpyrifos-methyl chlorthiophos chlorthiophos oxygen analog hlorthiophos sulfone chlorthiophos sulfoxide clodinafop-proparg clofentezine sRCccccccccvRcvc Wide bore or degs column recommended Recovery test yielded very high recoveries (>200%)from wheat. Degrades on GlC in presence of extract. cloquintocet-mexyl TABLE 302-a--44 Transmittal No 2000-1(10/1
TABLE 302-a Pesticide Analytical Manual Vol. I TABLE 302-a—4 Chemical Recovery1 Notes2 Table 302-a: Recovery Through 302 (E1-E3 + DG1-DG19) Transmittal No. 2000-1 (10/1999) Form FDA 2905a (6/92) chlorbufam C chlordane C chlordane, cis- C chlordane, trans- C chlordimeform hydrochloride P (80%) chlorethoxyfos V (64-119%) Recoveries performed with electron capture detector. chlorfenapyr P (73-82%) chlorfenvinphos, alpha- C chlorfenvinphos, beta- C chlorflurecol methyl ester C chlorimuron ethyl ester P (69-70%) chlormephos C Low temperature column required. chlornitrofen C (80%) chlorobenzilate C chloroneb C Low temperature column required. chloropropylate P (64%) chlorothalonil S Recovery may be 0%. chlorothalonil trichloro impurity R chloroxuron C chlorpropham C chlorpyrifos C chlorpyrifos oxygen analog C Wide bore or DEGS column recommended. chlorpyrifos-methyl C chlorthiophos C chlorthiophos oxygen analog C chlorthiophos sulfone C chlorthiophos sulfoxide C clodinafop-propargyl V Recovery test yielded very high recoveries (>200%) from wheat. clofentezine R Degrades on GLC in presence of extract. clomazone C cloquintocet-mexyl V (57-137%) coumaphos C
Pesticide Analytical Manual Vol I TABLE 302-a Table 302-a: Recovery Through 302 (E1-E3+DG1-DG19) Chemical Recovery Notes coumaphos oxygen analog CP51214 cyanophos n or s detector required cycluron n detector required cyfluthrin High temperature column required. vmoxanil V(70-107%) N detector required; GLC rrts and responses ephrin Cccc cyprodinil Needs n detector S(1620%) (<10%) DCPA DDE DDT DDT P,P deltamethrin demeton-O demeton-S sulfone scccccccccccccP Wide bore or degs column recommended demeton-S sulfoxide Wide bore or DEGS column required desmethyl norflurazon V(63200%) di-all Transmittal No 2000-1(10/1999) Form FDA 2905a(6/92) TABLE 302-8--5
TABLE 302-a—5 Pesticide Analytical Manual Vol. I TABLE 302-a Chemical Recovery1 Notes2 Table 302-a: Recovery Through 302 (E1-E3 + DG1-DG19) Transmittal No. 2000-1 (10/1999) Form FDA 2905a (6/92) coumaphos oxygen analog C CP 51214 C crotoxyphos C crufomate C cyanazine C cyanofenphos C cyanophos C cycloate C N or S detector required. cycluron C N detector required. cyfluthrin C High temperature column required. cymoxanil V (70-107%) N detector required; GLC rrts and responses variable. cypermethrin C cyprazine C cyproconazole C cyprodinil C Needs N detector cyromazine S (16-20%) dazomet S (<10%) DCPA C DDE, o,p'- C DDE, p,p'- C DDT, o,p'- C DDT, p,p'- C deltamethrin C demeton-O C demeton-O sulfone C demeton-O sulfoxide C demeton-S C demeton-S sulfone C Wide bore or DEGS column recommended. demeton-S sulfoxide C Wide bore or DEGS column required. des N-isopropyl isofenphos C desisopropyl iprodione P (67-84%) desmethyl norflurazon V (63-200%) di-allate C
TABLE 302-a Pesticide Analytical Manual Vol I Table 302-a: Recovery Through 302 (E1-E3 +DG1-DG19) Recover Note dialifor C diazinon diazinon oxygen analog C(80%) dichlobenil Low temperature column required lichlofenthion dichlofluanid dichlone CCcPcC P(55 May break dow dichlorvos Low temperature column required: wide bore o DEGS recommended diclobutrazol Wide bore column recommended diclofop-methyl C dicofol, P, p dicrotophos Wide bore or degS column required dieldrin C difenoxuron R 79-95% recovered at I and 5.5 ppm, but subject dimethachlon dimethametryn nor s detector required dimethoate C Wide bore or degs column recommended dimethomorph(prop) V(87-133%) High temperature colum uired n detector required dinobuton dinocap n detector required Hioxabenzofos n detector required; used megabor column dioxathion V(7294%) V(57-155%) Detector required. diphenyl 2-ethylhexyl phosphate mean recovery 104.2%0, n=15 disulfoton C TABLE 302-a--6 Transmittal No 2000-1(10/1
TABLE 302-a Pesticide Analytical Manual Vol. I TABLE 302-a—6 Chemical Recovery1 Notes2 Table 302-a: Recovery Through 302 (E1-E3 + DG1-DG19) Transmittal No. 2000-1 (10/1999) Form FDA 2905a (6/92) dialifor C diazinon C diazinon oxygen analog C (80%) dichlobenil C Low temperature column required. dichlofenthion C dichlofluanid C dichlone P (55%) May break down. dichlorvos C Low temperature column required; wide bore or DEGS recommended. diclobutrazol C Wide bore column recommended. diclofop-methyl C dicloran C dicofol, o,p'- C dicofol, p,p'- C dicrotophos C Wide bore or DEGS column required. dieldrin C diethatyl-ethyl C difenoxuron R 79-95% recovered at 1 and 5.5 ppm, but subject to interferences. dimethachlor C dimethametryn C N or S detector required. dimethipin C dimethoate C Wide bore or DEGS column recommended. dimethomorph (prop) V (87-133%) High temperature column required. dinitramine C N detector required. dinobuton C dinocap C N detector required. dioxabenzofos C dioxacarb C N detector required; used Megabore Carbowax column. dioxathion V (72-94%) diphenamid V (57-155%) N detector required. diphenyl 2-ethylhexyl phosphate C mean recovery 104.2%, n=15 diphenylamine C N detector required. disulfoton C
Pesticide Analytical Manual Vol I TABLE 302-a Table 302-a: Recovery Through 302 (E1-E3+DG1-DG19) Recovery Notes disulfoton sulfone disulfoton sulfoxide Wide bore or DEGS column required dithianon NR Breaks down in presence of extract L High recovery(113-121%)reported endosulfan i endosulfan ii endosulfan sulfate endrin endrin aldehyde EP esfenvalerate High temperature column required Wide bore column recommended ethalfluralin ethephon ethiofencarb CccccccccNcccc Nor S detector required; responses variable. Low temperature column, N or s detector re- lIre ethion ethion oxygen analog ethirimol P(73%) ethofumesate S selective detector required ethoxyquin Cccc n detector required ethyl p-toluene sulfonamide nor S detector required ethylenethiourea S(0-48%) Short, low temperature DEGS or wide bore col- n or s detector etridiazole Low temperature column recommended. etrimfos etrimfos oxygen analog famphur oxygen analog Ccccccc Quantitation affected by poor GLC fenamiphos sulfone Transmittal No 2000-1(10/1999) Form FDA 2905a(6/92) TABLE 302-a--7
TABLE 302-a—7 Pesticide Analytical Manual Vol. I TABLE 302-a Chemical Recovery1 Notes2 Table 302-a: Recovery Through 302 (E1-E3 + DG1-DG19) Transmittal No. 2000-1 (10/1999) Form FDA 2905a (6/92) disulfoton sulfone C disulfoton sulfoxide C Wide bore or DEGS column required. dithianon NR Breaks down in presence of extract. diuron C Low temperature column required. edifenphos C High recovery (113-121%) reported. endosulfan I C endosulfan II C endosulfan sulfate C endrin C endrin aldehyde C EPN C esfenvalerate C High temperature column required. etaconazole C Wide bore column recommended. ethalfluralin C ethephon NR ethiofencarb C N or S detector required; responses variable. ethiolate C Low temperature column, N or S detector required. ethion C ethion oxygen analog C ethirimol P (73%) ethofumesate C S selective detector required. ethoprop C ethoxyquin C N detector required. ethyl p-toluene sulfonamide C N or S detector required. ethylenethiourea S (0-48%) Short, low temperature DEGS or wide bore column, N or S detector required. etridiazole C Low temperature column recommended. etrimfos C etrimfos oxygen analog C famphur C famphur oxygen analog C Quantitation affected by poor GLC. fenamiphos C fenamiphos sulfone C
TABLE 302-a Pesticide Analytical Manual Vol I Table 302-a: Recovery Through 302 (E1-E3 +DG1-DG19) Recover Note fenamiphos sulfoxide fenarimol CcN fenarimol metabolite b fenarimol metabolite S(6%) fenbuconazole fenfuram fenitrothion Cccc fenitrothion on oxvgen analo fenoxaprop ethyl ester S(0-40%) fenoxycarb n detector required fe n detector required fensulfothion fensulfothion oxygen analog fensulfothion sulfone fenthion fenthion oxygen analog Ccccccccc fenthion oxygen analog sulfoxide fenthion sulfone fenvalerate C col S(0-72%) Corn forage sample interfered with determina- tion flamprop-methyl fluazifop butyl ester C(78-112%) fluchloralin High temperature column required. V(49-121%) Requires n detector. Wide bore column recommended fluvalinate High temperature column required FOE 5043 fonofos fonofos oxygen anal V(57-108%) formothie TABLE 302-a--8 Transmittal No 2000-1(10/1
TABLE 302-a Pesticide Analytical Manual Vol. I TABLE 302-a—8 Chemical Recovery1 Notes2 Table 302-a: Recovery Through 302 (E1-E3 + DG1-DG19) Transmittal No. 2000-1 (10/1999) Form FDA 2905a (6/92) fenamiphos sulfoxide C fenarimol C fenarimol metabolite B NR fenarimol metabolite C S (6%) fenbuconazole C fenfuram C fenitrothion C fenitrothion oxygen analog C fenoxaprop ethyl ester S (0-40%) fenoxycarb C N detector required. fenpropimorph C N detector required. fensulfothion C fensulfothion oxygen analog C fensulfothion sulfone C fenthion C fenthion oxygen analog C fenthion oxygen analog sulfoxide C fenthion sulfone C fenvalerate C High temperature column required. fipronil S (0-72%) Corn forage sample interfered with determination. flamprop-M-isopropyl C flamprop-methyl C fluazifop butyl ester C (78-112%) fluchloralin C flucythrinate C High temperature column required. fludioxonil V (49-121%) Requires N detector. flusilazole C Wide bore column recommended. fluvalinate C High temperature column required. FOE 5043 C folpet C fonofos C fonofos oxygen analog V (57-108%) formothion C
Pesticide Analytical Manual Vol I TABLE 302-a Table 302-a: Recovery Through 302 (E1-E3+DG1-DG19) Chemical Recovery Notes fosthiazate fuberidazole May break down in solution. Temp program separated from interference in tomato furilazole n detector required Gardona tachyon heptachlor epoxide heptenophos hexachlorobenzene Cccccc hexazinone P(57-76%) n detector required; high temperature column may be needed. Wide bore column recommended imazamethabenz methyl ester n detector required, though halogen-selective detector may respond IN-A3928 S(23-39%) IN-B2838 P(7584%) IN-T3935 IN-T393 S(29-34%) IN-T3937 n detector required dione iprodione metabolite isomer isazofos isocarbamid isofenphos oxygen analog Ccccccccc detector req isoprothiolane S(44-67%) GLC poor; requires wide bore column; com- pound may degrade soxaflutole Crop interference may have prevented measure- ment of recovery Transmittal No 2000-1(10/1999) Form FDA 2905a(6/92) TABLE 302-a-9
TABLE 302-a—9 Pesticide Analytical Manual Vol. I TABLE 302-a Chemical Recovery1 Notes2 Table 302-a: Recovery Through 302 (E1-E3 + DG1-DG19) Transmittal No. 2000-1 (10/1999) Form FDA 2905a (6/92) fosthiazate C fuberidazole C May break down in solution. Temp program separated from interference in tomato. furilazole C G-27550 C N detector required. Gardona C heptachlor C heptachlor epoxide C heptenophos C hexachlorobenzene C hexaconazole C hexazinone P (57-76%) N detector required; high temperature column may be needed. imazalil C Wide bore column recommended. imazamethabenz methyl ester C N detector required, though halogen-selective detector may respond. IN-A3928 S (23-39%) IN-B2838 P (75-84%) IN-T3935 S (20%) IN-T3936 S (29-34%) IN-T3937 S (25%) N detector required. iprobenfos C iprodione C iprodione metabolite isomer C isazofos C isocarbamid C isofenphos C isofenphos oxygen analog C isopropalin C N detector required. isoprothiolane C isoproturon S (44-67%) GLC poor; requires wide bore column; compound may degrade. isoxaben C N detector required. isoxaflutole NR Crop interference may have prevented measurement of recovery
TABLE 302-a Pesticide Analytical Manual Vol I Table 302-a: Recovery Through 302 (E1-E3 +DG1-DG19) Recover Note C kresoxim-methyl P(7389%) KWG 1323 lambda-cyhalothrin lenacil n detector required. leptophos oxygen analog leptophos photoproduct lindane linuron malathion cccccccvccc malathion oxygen analog MB46513 MB45950 S(035%) MB46136 S(019%) mecarbam mefluidide R 123% recovered of 3 ppm added; subject to interference, poor GLC melamine mephosfolan metalaxyl C n detector required but response variable metasystox thiol methabenzthiazuron C(8586%) methamidopho For complete recovery, use variation from PAMI 302E5/E6 methidathion methiocarb Nor s detector required for GLCdetermination GLC not the method of choice methiocarb sulfone Some reports of no recovery; n or s detector methiocarb sulfoxide P(60-80%) GLC not preferred, requires n or S detector, wide bore or degs methoprotryne Wide bore column recommended methoxychlor olefin TABLE 302-a-10 Transmittal No 2000-1(10/1
TABLE 302-a Pesticide Analytical Manual Vol. I TABLE 302-a—10 Chemical Recovery1 Notes2 Table 302-a: Recovery Through 302 (E1-E3 + DG1-DG19) Transmittal No. 2000-1 (10/1999) Form FDA 2905a (6/92) jodfenphos C kresoxim-methyl P (73-89%) KWG 1323 C lambda-cyhalothrin C lenacil C N detector required. leptophos C leptophos oxygen analog C leptophos photoproduct C lindane C linuron V (57-101%) malathion C malathion oxygen analog C MB 46513 C MB45950 S (0-35%) MB46136 S (0-19%) mecarbam C mefluidide R 123% recovered of 3 ppm added; subject to interference, poor GLC. melamine NR mephosfolan C metalaxyl C N detector required but response variable. metasystox thiol C metazachlor C methabenzthiazuron C (85-86%) methamidophos V For complete recovery, use variation from PAM I 302 E5/E6 methidathion C methiocarb C N or S detector required for GLC determination; GLC not the method of choice. methiocarb sulfone S Some reports of no recovery; N or S detector required. methiocarb sulfoxide P (60-80%) GLC not preferred, requires N or S detector, wide bore or DEGS column. methoprotryne C Wide bore column recommended. methoxychlor olefin C
