Multi-residue Determination of 334 Pesticides in Vegetable by GC/MS and LC/MS
Some standard content:
ICS 67.080.20
Agricultural Industry Standard of the People's Republic of China
NY/T 1379—2007
Multi-residue Determination of 334 Pesticides in Vegetable byGC/MS and LC/MS
Issued on 2007-06-14
Implemented on 2007-09-01
Issued by the Ministry of Agriculture of the People's Republic of China
Appendix A, Appendix B, Appendix C, Appendix D and Appendix E of this standard are informative appendices. This standard is proposed and managed by the Ministry of Agriculture of the People's Republic of China. NY/T1379—2007
Drafting units of this standard: China Water Conservancy and Hydropower Research Institute, Rice and Rice Products Quality Supervision and Inspection Center of the Ministry of Agriculture, Jianjiang Dadi Crop Product Quality and Safety Testing Center.
The main drafters of this standard are Chen Mingxue, Mou Renxiang, Zhu Zhiwei, Jin Liandeng, Ying Xinghua, Wu Li and Min Jie. 1 Scope
Determination of 334 pesticide residues in vegetables
Gas chromatography-mass spectrometry and liquid chromatography-mass spectrometry NY/T 1379—2007
This standard specifies the gas chromatography-mass spectrometry multi-residue determination method for 305 pesticides (see Appendix A) and the liquid chromatography-mass spectrometry multi-residue determination method for 29 pesticides (see Appendix C) in vegetables. This standard is applicable to the determination of 334 pesticide residues in vegetables. The detection limit of this standard is 0.001 mg/kg~0.05 mg/kg (see Appendix A and Appendix C). 2 Principle
The sample was homogenized with acetonitrile, and the extract was salted, graphite magnetic black, and propylamino solid phase column, and then 305 pesticides were detected by gas chromatography-mass spectrometry (see Appendix A). The mass spectrum was processed by deconvolution software after noise treatment, baseline drift correction, and identification of individual compounds in the co-elution peaks. The qualitative analysis was based on the processed mass spectrum and retention time, and the internal standard method was used for quantitative analysis. The extract was purified by ethylenediamine-N-propyl (PSA) dispersed solid phase extraction, and 29 pesticides were detected by liquid chromatography-mass spectrometry (see Appendix C). The qualitative analysis was based on the selected ion abundance ratio and retention time, and the external standard method was used for quantitative analysis. 3 Reagents and materials
Unless otherwise specified, only reagents confirmed as analytical grade and deionized water or water of equivalent purity were used in the analysis. 3.1 Acetonitrile: chromatographic grade.
3.2 Methanol: chromatographic grade.
3.3 Toluene: chromatographic grade.
3.4 Acetone: chromatographic grade.
3.5 Anhydrous magnesium sulfate: bake at 500℃ for 4h, cool to room temperature in a desiccator, and store in a desiccator for later use. 3.6 Mobile phase A: accurately weigh 0.385g ammonium chloride, dissolve in 1000mL methanol, and filter through a 0.22um filter. 3.7 Mobile phase B: accurately weigh 0.385g ammonium acetate, dissolve in 1000mL water, and filter through a 0.22μm filter. 3.8 Ethylene diamino-N-propyl (PSA): 40 um, 60A. 3.9 Stone black solid phase extraction column: volume 6mL, filler 500mg. 3.10 Azopropyl solid phase extraction column: volume 6mL, filler 500mg. 3.11 Pesticide standard, purity ≥95%.
3.12 Internal standard: Chlorpyrifos, accurately weigh a certain amount of chlorpyrifos, dissolve and dilute with acetone to prepare a 1000mg/L stock solution, and store below -18°C. Take a certain volume of internal standard stock solution, and dilute it step by step with acetone to prepare a 5mg internal standard addition solution. 3.13 Pesticide standard solution
3.13.1 Standard solution for gas chromatography-mass spectrometry Single pesticide standard solution: Accurately weigh a certain pesticide standard, dissolve and dilute with acetone, and prepare a 1000mg/L single pesticide standard stock solution one by one, and store below -18°C. When using, according to the response value of each pesticide in the mass spectrometer, take an appropriate amount of standard stock solution, dilute with acetone to prepare the required standard working solution. Mixed pesticide standard solution: According to the response value of each pesticide in the mass spectrometer, take a certain volume of pesticide standard stock solution one by one and inject it into the same volumetric flask, dilute to the scale with acetone, and prepare a pesticide mixed standard stock solution. Before use, dilute with acetone to the required standard working solution, and add a certain amount of internal standard for dissolution. The volume and internal standard concentration of mixed standard working solution are shown in Appendix A. 3.13.2 Standard solution for liquid chromatography-mass spectrometry Single pesticide standard solution: Accurately weigh a certain pesticide standard, dissolve it in acetone, and prepare 1000 mg/L single pesticide standard stock solution one by one, and store it below -18°C. When using, according to the response value of each pesticide in the mass spectrometer, take an appropriate amount of standard stock solution, and dilute it with methanol to prepare the required standard working solution. Mixed pesticide standard solution: According to the response value of each pesticide in the mass spectrometer, take a certain volume of pesticide standard stock solution one by one and inject it into the same volumetric flask, dilute it to the scale with methanol, and prepare a pesticide mixed standard stock solution. Dilute with methanol to the required standard working solution before use. The concentration of mixed standard working solution is shown in Appendix C. 4 Instruments
4.1 Gas chromatography-mass spectrometer: with electron impact source (EI), programmed temperature injection port (PTV) with cold trap, deconvolution software, NISTOS mass spectrum library.
4.2 Liquid chromatography-mass spectrometer: with electrospray ion source (ESI). 4.3 High-speed disperser: speed not less than 20000r/min4.4 Centrifuge.
4.5 Rotary evaporator.
4.6 Nitrogen blowing instrument.
5 Preparation of samples
Remove the sundries from the collected samples, take the edible part, gently wipe the attached materials on the surface of the sample with clean gauze, use the diagonal turning method, take the diagonal part, chop it, mix it thoroughly, put it into the food processor, crush it, seal it, and store it in 4 dead Ling. 6 Analysis Steps
6.1 Sample Treatment
6.1.1 Extraction
Weigh 15g of sample (accurate to 0.01g) in a 100mL centrifuge tube, add 30.0mL of acetonitrile, homogenize in a high-speed disperser for 2min, add 7.5g of anhydrous magnesium sulfate, homogenize for 1min, and then centrifuge at 3000r/min for 5min. 6.1.2 Concentration
Take 10mL of supernatant into a 50mL chicken heart bottle, and concentrate under reduced pressure at below 50℃ on a rotary evaporator. When concentrated to about 1mL, add 10mL of acetonitrile to remove a small amount of water in the extract by forming an azeotrope with acetonitrile. Finally, the volume of the test solution is about 1mL and it is purified. 6.1.3 Purification
Connect the solid carbon black solid phase extraction column and the propylamino solid phase extraction column in series from top to bottom, pre-elute with 5 mL acetonitrile + toluene (3+1), and when the solvent liquid level reaches the surface of the column adsorption layer, immediately add the concentrated test solution in 6.1.2, elute with 10 mL acetonitrile + toluene (3+1) in a heart-shaped bottle, and add the eluent to the column, elute the pesticide with 25 mL acetonitrile + toluene (3+1), combine the eluent in a heart-shaped bottle, and concentrate to dryness under reduced pressure at below 50°C on a rotary evaporator. Quantitatively transfer with propylamine and make it to 2.5 mL, add 125 μL of 5 mg/L internal standard, mix, and use for gas chromatography-mass spectrometry determination. Take 1 mL of the upper acetonitrile extract of 6.1,1 and put it into a 2 mL centrifuge tube, add 50 mg PSA and 200 mg anhydrous magnesium sulfate, shake for 1 min and centrifuge at 7000 r/min for 5 min. Take 0.5 mL and slowly blow dry with nitrogen at 50 t, add 0.5 mL methanol, mix, pass through a 0.22 μm filter membrane, and use for liquid chromatography-mass spectrometry. 6.2 Determination
6.2.1 Gas chromatography-mass spectrometry
6.2.1. 1 Instrument reference conditions
Chromatographic column: HP~5MS (30m×0.25mm×0.25μm) quartz capillary column or equivalent; NY/T 1379—2007
Column box temperature: 70°C for 5 min, then increase the temperature to 150°C at 25/min, then increase the temperature to 200°C at 3T/min, then increase the temperature to 280°C at 8t/min, and maintain for 10 min; Injection mode: Solvent evacuation mode:
Injection program: initial temperature 5°C, maintain for 2.5 min, then increase the temperature to 280°C at 720t/min, maintain for 2 min, then increase the temperature to 450°C at 720℃/min, and maintain for 5 min; Solvent evacuation flow rate: 50.0mL/min; Solvent evacuation pressure: 0.0psi; Inlet pressure: 20.0psi (constant pressure mode); injection volume: 20pL;
Cooling gas: liquid CO2;
Carrier gas: oxygen, purity ≥99.999%;
Mass spectrometry parameters: electron bombardment source: 70eV; ion source temperature: 230℃: quadrupole temperature: 150C: h)
GC-MS interface temperature: 280℃;
i) Data acquisition mode: full scan; scanning range: 35m/z~550m/z. 6.2.1.2 Establishment of target compound mass spectrum library and retention factor correction library Inject a single pesticide standard solution of a certain concentration into a gas chromatograph-mass spectrometer to obtain the retention time and mass spectrum of the pesticide, use deconvolution software to establish the target compound mass spectrum library based on the mass spectrum, and establish the retention factor correction library based on the retention time. According to different bee-out time periods, select the retention times of more than three pesticides and establish a retention factor correction curve. 6.2.1.3 Qualitative and quantitative determination
If the chromatographic retention time of the unknown component in the sample is consistent with that of the standard, and the corresponding mass spectrum is consistent with the standard mass spectrum after deconvolution, it can be identified as the pesticide.
Use the internal standard method single ion determination, and select the peak height or peak area of the base peak in the deconvoluted mass spectrum to compare with the standard for quantitative determination. 6.2.2 Liquid chromatography-mass spectrometry
6.2.2.1 Instrument reference conditions
Chromatographic column: C18 column, 3.0μm, 150mm×2.1mm; Oven temperature: 40C;
Injection volume: 10,uL;
Ion source: electrospray ESI;
Scanning mode: multi-signal scanning:
Nebulizer gas and curtain gas are both high-purity nitrogen; Before use, the flow rate and temperature of each gas should be adjusted according to the instrument status so that the mass spectrometer sensitivity can meet the detection requirements;
Ion source temperature: 350℃
Electrospray voltage: 3000V;
For monitoring of qualitative and quantitative ion pairs and collision voltage, please refer to Appendix D; Mobile phase and flow rate are shown in Table 1.
Table 1 Mobile phase and flow rate [gradient elution]
Time+
mL/tuin
NY/T 1379--2007
6.2.2.2 Qualitative and quantitative determination
If the chromatographic retention time of the unknown component in the sample is consistent with that of the standard, and the abundance ratio of the corresponding qualifier ion and quantifier ion is consistent with that of the standard, it can be identified as the pesticide.
Use the external standard method for single ion quantification. For the quantitative ions of each pesticide, see Appendix D. 7 Calculation of results
7.1 Gas chromatography-mass spectrometry
The amount of the pesticide residue in the sample is expressed as mass fraction W, and the value is expressed in milligrams per kilogram (mg/kg), and is calculated according to the following formula: x×xV×c
A×A×V×m
Wherein:
The peak height or peak area of the base peak of the pesticide to be tested in the sample; the peak height or peak area of the base peak of the pesticide to be tested in the pesticide standard solution; the peak height or peak area of the base peak of the internal standard in the sample solution; -The peak height or peak area of the base peak of the internal standard in the standard solution; -The total volume of the extraction solvent, in milliliters (mL): The volume of the extract used for detection, in milliliters (mL); -The volume of the sample to be fixed, in milliliters (mL); The mass of the sample, in grams (g):
The concentration of the pesticide to be tested in the standard working solution, in milliliters per liter (mg/L); The calculation result is expressed to two significant figures. When the sample content exceeds 1 mg/kg, it shall be expressed to three significant figures. 7.2 Liquid Chromatography-Mass Harmonic Distortion Method
The amount of pesticide residue in the sample is expressed as mass fraction W, and the value is expressed in milligrams per gram (rmg/kg), calculated according to the following formula: W=c××1000
m × 1 00
Wherein;
-the residue of the component to be tested in the sample, in milligrams per kilogram (mg/kg); -the concentration of the solution of the component to be tested obtained from the standard curve, in milligrams per liter (m/L); V—the volume of acetonitrile added during sample extraction, in milliliters (mL); -the value of the sample mass, in grams (g). The calculation result shall be expressed to two significant figures: when the sample content exceeds 1 mg/kg, it shall be expressed to three significant figures. 8 Accuracy and precision
For the addition level of 0.05tmg/kg to 1.0mg/kg in vegetables, the recovery rate of GC-MS is between 60% and 130%, and the coefficient of variation is less than 20%.
For the addition level of 0.01mg/kg to 1.0tmg/kg in vegetables, the recovery rate of LC-MS is between 70% and 120%, and the coefficient of variation is less than 20%.
9 Total ion flow and selected ion monitoring diagram
For the total ion flow diagram and peak number of GC-MS, see Appendix B. For the selected ion monitoring diagram of LC-MS, see Appendix E. 4
Appendix A
[Informative Record]
NY/T 13792007
Table A.1 gives the Chinese and English names, retention times, peak numbers of total ion currents, method detection limits and concentrations of mixed standard solutions of 305 pesticides analyzed by gas chromatography-mass spectrometry. A.1305 pesticides Chinese and English names, retention time, method detection limit and concentration of mixed standard solution serial number
pesticide English name
d10 - chkorpyrifos
acephate
acetamiprid
acetochlor
acrina thrin
ailachior
aldrin
allethrin
allidochlor
ametryn
ararmite I
aramritel
atrazine
azaconazolc
azinphos-cthyl
Bzoxystrobin
benalaxyl
benazolin-ethyl
bendiocarb
benfhuralin
benfuresate
benoxacor
bifenox
bifenthrin
biter tenolI
bitertanol
broxmacit
bromobutide
bramophes
Chinese name of pesticide
chlorpyrifos
acephate
acetamiprid
acetamiprid
acetochlor
chlorpermethrin
alachlor
aldrin
allethrin
dipropylene Gluconamide
Acarbamide I
Acarbamide II
Atrazine
Oxycyclazole
Itifos
Glucophagen
Benzoxazolidinone
Baclofen
Benoxacarb
Chlorhexidine
Furoxanol
Petrachlorvinphos
Carboxyhexyl
Bifenthrin
Bifenthrin T
Bifenthion II
Herbicide
Bromophthion
Anophos
Retention time
Concentration of mixed standard solution
Method detection limit
NY/T1379-2007
Pesticide English name
bromophce-ethyl
bmomopropylate
bupirimate
buprofezin
butachlar
butafenacil
butarmics
butralin
butylare
cadusafos
cafenstrole
carbary
carbofuran
cerboxin
carfentrazone-ethyl
chlorbenside
chkorbufam
chkardimefamm
chlarethoxyfce
ehlorfenapyr
!chlor fenscn
chlarfenvinphoe
chlormephos
chlorobenzilate
chloroneb
chlorprophem
chlorpyrifos
chlorpyrifos-methyl||tt| |chlorthal-dimethyl
chlorthiophce
cirmethylin
cis-chlordane
trans-chlordane
clodinafoprpropargyl
ckomazcne
ckomcprop
Table A.1 (continued)
Chinese name of pesticides
ethyl bromide Phosphorus
Chlorhexidine
Ethiopyrimidine sulfonate
Buprofezin
Butachlor
Cloxacin||tt| |Antiphos
Zhongdingling
Dingcaodi
Jiaoxianlin
Jiangongwei
Carbofuran
Wei Youling
mefenacet
chlorchloracarb
chlorchloracarb
chlorchloracarb
chlorchloracarb
chlorchloracarb
chlorchloracarb
chlorchloracarb
chlorchloracarb || tt||Oxychlorothion
Ethyl chlorpyrifos
Benzaldehyde
Chlorpropham
Chlorpyrifos-methyl
Chlorpyrifos-methyl
Methyl chlordane
Chlordane
Cyclohexane
Cis-chlordane
Trans-chlordane
Alkyne Oxalic acid
Isopropylamine
Chloroformamide
Retention time
Concentration of mixed standard solution
Method detection limit
Pesticides English name
ckoquintocet-mexy
cyanofenphas
cyanophos
cylhufenarnid
eylhuthrin I
cyfhurthrin
cyfluthurin
cyfluthrinly
cytalokop-butyl
cyperinethrin I
cypermethrin II
cypenmethrin II|| tt||cypermethrin IY
cyproconazole
cyprodinil
0,P'-DDD
P,p*-DDD
o,p'-DDE
PP'-DDE
O,P'-DDT
Pp'-DDT
deltarmethrin
demetonrs
demetonrs methyl|| tt||di-allate I
di-allate
diezinon
dichlobenil
dichlofenthion
dichlarvos
diclobutrazdl
dickofop-methyl
dicloran
dicrotophos
dieldrin
diethofencarb
Table A.1 (continued)
Chinese name of pesticides
dieldrin
diethofencarb
||Cycloclorofenamide
Flucypermethrin I
Cypermethrin II
Cypermethrin ester blood
Cypermethrin ester blood Ester IV
Cyanogen
Cypermethrin I
Cypermethrin II
Cyanogenase I
Cyanogen| |tt||Cyproconazole
Cyproconazole
o,p\-Didi
P,p'-Didi
oP' -DiDiYi
P,P\-DiDiYi
o,P\-DiDiZen
pp-DDT
Deltamethrin||tt ||Demeton-S
Methyl demeton-methyl
Yanqidi!
Steamed diazinon
diazinon
benzanilide
dichlorvos
respect and fear
carbazinol
Diclofop-ethyl
Chlorendamide
Vendorin
Retention time
NY/T 1379--2007
Mixed standard Liquid concentration
Method detection limit
NY/T13792007
Pesticide English name
dfenocoazole I
difenocoazole I
diflufenican||tt || dimepiperate
diethametryr
dimethenamid
dinethipin
dimethoate
dimethylvinphos
diniamaaole
diofenolan I
diofenolen
dioxabenzofcs
dlioxathion
diphenammid
diphenylamine
disulfoton
dithiopyr
edlifenpbos
endoaulfan I| |tt||endosulfan l
endrin
epoxiconzole
eaprocarb
ethalfluralin
ethiofencarb
ethion
ethobenzanid
ethofurnesate| |tt||ethoprophos
etofetiprox
etaxazole
etridiazole
etrimfoe
Boom A.1(Continued)
Chinese name of pesticide
Benzaldehyde methylconazole I
Benzaldehyde methylconazole II
Pychloracrylamide
Piperidinol
Isopropylamine
Dimethocyanate
Thiazolin
Methyl chlorfenapyr
Diniconazole
Benzencarb T
Benzencarb
Vegetable phosphorus
Dimethoate
Bis(phenoxy)chlor Amine
Diphenylamine
Disulfothiocarb
Dicarbophos
Endosulfan I
Endosulfan II
Isopropylamine
Fenthion
Azofenazole
Imidazolin
Imidazolin
Mefenacet
Mefenacetylsulfuron
Ethiosulfate or
Ethiosulfate
Ethiosulfate
Ethiosulfate
Ethiosulfate
Ethiosulfate
Ethiosulfate
Ethiosulfate
Ethiosulfate
Ethiosulfate
Ethiosulfate ||fenarriphos
feniarimol
lenbuxnazole
fenitrothion
fenobnxczarb
fenothiocarb
fencxanil
fenoxaprop-ethyl
fenaxycarb
fenpropathrin
fensulfothion
fenthion
fenvalerate I
fenvalerate ll
fipromil
flhuncrypyrin
fluezifop butyl
fucythrinate I
flucythrinate I
fludioxonil
furnioxazin
fluquinconazole
flu ridane
fluailazoke
flutolanil
fhutriafol
fonofoe
formothion
fosthiazeteI
foethinzate I
fthalide
furathiocerb
furilazale
halfenprox
heptachlor
Table A.1 (continued)
Chinese name of pesticide
fenamiphos
chlorfenapyr
fenapyrazole
fenapyramide
fenapyramide
fenapyramide
fenapyramide
fenapyramidebzxz.net
fenapyramide
fenapyramide
fenapyramide
fenapyramide
fenapyramide
fenapyramide
fenapyramide
fenapyramide
fenapyramide
fenapyramide
fenapyramide
fenapyramide ||Pyrifos-P-ethyl
Cypermethrin 1
Cypermethrin I
Fludioxonil
Flufenac
Flupyridine
Fluoxathiocarb
Flupyridine
Aminosila
Aminamide
Flutriol
Fonofos
Anthiophos
Thiazophos T
Toxophos T
Tetrachlorobenzoic acid
Furoxamethylenetetracycline
Flufenac
Phenylspiroxide
Retention time
NY/T1379—2007
Concentration of mixed standard solution
Detection limit of Fangqu
NY/T 1379—2007
Pesticide English name
heptachlorepozid
hexachkrobenzene
hexaconazole
hexythiazox
indoxacarb
iodofenphos
iprobenfos
iprodione
iprovalicarb I | hrin | | tt | tt||methoprene
methozcychior
metobachkar
Metormincatrobin
Table A.1 (continued)
Chinese name of pesticide
Heptachlor epoxide
Hexachlorobenzene
Hexachlor
Acetochlor
Iodothiophos
Isothiocyanate
Isothiocyanate
Valveol I
Myanmar glue II
Azothion
Butanamide
Azothion
Isoamidophos
Isoprocarb
Kresoxim-methyl
Lactofogam
Clove
Triaminothrin
Cyclopyralid
Dimethoate
Malathion
Mefenacet
Mefenacet
Mefenacet
Methiocarb
Methomyl
Methocarb
Methocarb
Methofenacet
Methocarb
Methocarb
Methocarb
Retention time
Concentration of mixed standard solution
Method detection limit1 (continued)
Chinese name of pesticide
Fenamiphos
Chlorofenazol
Fenpyrimidine
Fenthiocarb
Fenthiocarb
Fenthiocarb
Fenthiocarb
Fenthiocarb
Fenthiocarb
Fenjiaphos
Fenvalerate I
Cypermethrin
Pyrimidine
Pyrimethamine
Pyrimethoxyfenazol
Cypermethrin 1
Cypermethrin I
Cypermethrin I
Cyprothrin
Cyprothrin I
Cyprothrin I
Cyprothrin II
Cyprothrin II
Cyprothrin II
Cyprothrin I ...ionil||tt| |Flufenac
Propylazone
Flufenac
Flufenac
Aminosila
Aminamide
Flutriol
Fonofos
Anthiophos
Thiazophos T
Toxofos T
Tetrachlorobenzoic acid
Furoxamethylenetetracycline
Flufenac
Toxofosila
Phenylspirol
Retention time
NY/T1379—2007
Concentration of mixed standard solution
Detection limit of Fangqu
NY/T 1379—2007
Pesticide English name
heptachlorepozid
hexachkrobenzene
hexaconazole
hexythiazox
indoxacarb
iodofenphos
iprobenfos
iprodione
iprovalicarb I | hrin | | tt | tt||methoprene
methozcychior
metobachkar
Metormincatrobin
Table A.1 (continued)
Chinese name of pesticide
Heptachlor epoxide
Hexachlorobenzene
Hexachlor
Acetochlor
Iodothiophos
Isothiocyanate
Isothiocyanate
Valveol I
Myanmar glue II
Azothion
Butanamide
Azothion
Isoamidophos
Isoprocarb
Kresoxim-methyl
Lactofogam
Clove
Triaminothrin
Cyclopyralid
Dimethoate
Malathion
Mefenacet
Mefenacet
Mefenacet
Methiocarb
Methomyl
Methocarb
Methocarb
Methofenacet
Methocarb
Methocarb
Methocarb
Retention time
Concentration of mixed standard solution
Method detection limit1 (continued)
Chinese name of pesticide
Fenamiphos
Chlorofenazol
Fenpyrimidine
Fenthiocarb
Fenthiocarb
Fenthiocarb
Fenthiocarb
Fenthiocarb
Fenthiocarb
Fenjiaphos
Fenvalerate I
Cypermethrin
Pyrimidine
Pyrimethamine
Pyrimethoxyfenazol
Cypermethrin 1
Cypermethrin I
Cypermethrin I
Cyprothrin
Cyprothrin I
Cyprothrin I
Cyprothrin II
Cyprothrin II
Cyprothrin II
Cyprothrin I ...ionil||tt| |Flufenac
Propylazone
Flufenac
Flufenac
Aminosila
Aminamide
Flutriol
Fonofos
Anthiophos
Thiazophos T
Toxofos T
Tetrachlorobenzoic acid
Furoxamethylenetetracycline
Flufenac
Toxofosila
Phenylspirol
Retention time
NY/T1379—2007
Concentration of mixed standard solution
Detection limit of Fangqu
NY/T 1379—2007
Pesticide English name
heptachlorepozid
hexachkrobenzene
hexaconazole
hexythiazox
indoxacarb
iodofenphos
iprobenfos
iprodione
iprovalicarb I | hrin | | tt | tt||methoprene
methozcychior
metobachkar
Metormincatrobin
Table A.1 (continued)
Chinese name of pesticide
Heptachlor epoxide
Hexachlorobenzene
Hexachlor
Acetochlor
Iodothiophos
Isothiocyanate
Isothiocyanate
Valveol I
Myanmar glue II
Azothion
Butanamide
Azothion
Isoamidophos
Isoprocarb
Kresoxim-methyl
Lactofogam
Clove
Triaminothrin
Cyclopyralid
Dimethoate
Malathion
Mefenacet
Mefenacet
Mefenacet
Methiocarb
Methomyl
Methocarb
Methocarb
Methofenacet
Methocarb
Methocarb
Methocarb
Retention time
Concentration of mixed standard solution
Method detection limit
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