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GB 23200.9-2016: Food safety national standard -- Determination of residues of 475 pesticides and related chemicals in grain -- Gas chromatographic-mass spectrometry
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Food safety national standard -- Determination of residues of 475 pesticides and related chemicals in grain -- Gas chromatographic-mass spectrometry
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GB 23200.9-2016
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Basic data | Standard ID | GB 23200.9-2016 (GB23200.9-2016) | | Description (Translated English) | Food safety national standard -- Determination of residues of 475 pesticides and related chemicals in grain -- Gas chromatographic-mass spectrometry | | Sector / Industry | National Standard | | Classification of Chinese Standard | G25 | | Word Count Estimation | 54,539 | | Date of Issue | 2016-12-18 | | Date of Implementation | 2017-06-18 | | Older Standard (superseded by this standard) | GB/T 19649-2006 | | Regulation (derived from) | State Health Commission, Ministry of Agriculture, Food and Drug Administration Notice No. 16 of 2016 | | Issuing agency(ies) | National Health and Family Planning Commission of the People's Republic of China, State Food and Drug Administration | GB 23200.9-2016: Food safety national standard -- Determination of residues of 475 pesticides and related chemicals in grain -- Gas chromatographic-mass spectrometry
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Food safety national standard - Determination of residues of 475 pesticides and related chemicals in grain - Gas chromatographic - mass spectrometry
ICS
National Standards of People's Republic of China
Replace GB/T 19649-2006
2016-12-18 release
2017-06-18 Implementation
National standards for food safety
475 pesticides and related chemical residues in grain
Determination
Gas chromatography - mass spectrometry
National food safety standards-
Determination of 475 pesticides and related chemicals residues in grains
Gas chromatography-mass spectrometry
Directory
Preface II
1 Scope 1
2 normative reference document 1
Principle 1
4 reagents and materials 1
5 instruments and equipment 2
6 Preparation of sample 2
7 Analysis Step 2
Calculation and presentation of results 3
9 precision 4
10% limit and recovery rate 4
Appendix A (informative) 475 kinds of pesticides and related chemicals, English name, method of quantitative limit, grouping, solvent selection
And mixed standard solution concentrations
Appendix B (informative) Retention time of 475 pesticides and related chemicals and internal standard compounds, quantitative ions,
The ratio of qualitative and quantitative ions to qualitative ions
Appendix C (Informative Appendix) Group A, B, C, D and E Group 5 Selective Ion Monitoring Group for Pesticides and Related Chemicals Table 31
Appendix D (informative) Reference substance Select ion monitoring in wheat matrix GC-MS Figure 35
Appendix E (informative) Relative standard deviation in laboratory
Appendix F (informative) Relative standard deviation between laboratories 41
Appendix G (informative) Experimental data on the concentration and recovery of samples
Foreword
This standard replaces GB/T 19649-2006 "Determination of 475 pesticides and related chemical residues in grain" Gas chromatography-mass spectrometry "
This standard compared with GB/T 19649-2006, the main changes are as follows.
- Standard text format is modified to national standard text format for food safety;
- increase the "other food reference implementation" in the standard range.
This standard has been replaced by the previous version of the release.
-GB/T 19649-2006.
National standards for food safety
Determination of 475 pesticides and related chemical residues in grain
Gas chromatography - mass spectrometry
1 Scope
This standard specifies the remaining amount of 475 pesticides and related chemicals (see Appendix A) for barley, wheat, oat, rice and maize.
Determination of Chromatography - Mass Spectrometry.
This standard applies to the determination of 475 pesticides and related chemical residues in barley, wheat, oats, rice and maize. Other grain
Can refer to the implementation of other food can refer to the implementation.
2 normative reference documents
The following documents are indispensable for the application of this document. For dated references, only the dated edition applies to this article
Pieces. For undated references, the latest edition (including all modifications) applies to this document.
GB 2763 National Standard for Food Safety - Maximum Residue Limit of Pesticides in Foodstuffs
GB/T 6682 Analytical laboratory water specifications and test methods
3 principle
The sample was extracted with acetonitrile in an accelerated solvent extraction instrument. The extract was purified by solid phase extraction column and washed with acetonitrile-toluene solution (3 1)
De-pesticide and related chemicals, with gas chromatography - mass spectrometry.
4 reagents and materials
Unless otherwise specified, all reagents are of analytical grade and water is in accordance with the primary water specified in GB/T 6682.
4.1 Reagents
4.1.1 Acetonitrile (CH3CN, 75-05-8). Chromatographic Purification.
4.1.2 diatomaceous earth (SiO2, 61790-53-2). excellent grade pure.
4.1.3 anhydrous sodium sulfate (Na2SO4,7757-82-6). analytical grade. Before burning at 650 ℃ for 4h, stored in a dryer, cooling and standby.
4.1.4 toluene C7H8, 108-88-3). excellent grade pure.
4.1.5 Acetone (CH3COCH3,67-64-1). Analytical pure, re-distilled.
4.1.6 dichloromethane (CH2Cl2, 75-09-2). chromatographic purity.
4.2 standards
Pesticide and Related Chemical Reference Material. Purity ≥95%, see Appendix A.
4.3. Standard solution preparation
4.3.1 Standard stock solution
Accurately weighed 5mg ~ 10mg (accurate to 0.1mg) pesticides and related chemicals in the standard 10mL volumetric flask, according to the standard
The solubility of the quasi-material and the determination of the need to select toluene, toluene - acetone mixture, dichloromethane and other solvents dissolved and constant volume to the scale (solvent selection
See Appendix A).
4.3.2 Mixing standard solutions (mixed standard solutions A, B, C, D and E)
According to the nature of pesticides and related chemicals and retention time, will be 475 kinds of pesticides and related chemicals into A, B, C, D, E five
And the concentration of each pesticide and associated chemical in the instrument to determine the concentration in the mixed standard solution. This is the standard
475 groups of pesticides and related chemicals and their mixed standard solution concentrations are given in Appendix A,
Depending on the group number of each pesticide and associated chemical, the concentration of the standard solution and the concentration of the standard stock solution,
Pesticide and related chemicals Standard stock solution (4.3.1) in a 100 mL volumetric flask, fixed to the mark with toluene. Mixed standard solution to avoid
Light 4 ℃ preservation, shelf life of one month.
4.3.3 internal standard solution
Accurately weighed 3.5mg epoxy heptachlor in 100mL volumetric flask, with toluene volume to the scale.
4.3.4 matrix mixed standard working solution
A, B, C, D, E group of pesticides and related chemical matrix mixed standard working solution is 40μL standard solution (4.3.3) and a certain
Volume of the mixed standard solution were added to 1.0 mL of the sample blank matrix extract, mix, dubbed the matrix mixed standard working solution A,
B, C, D and E. Matrix mixed standard working solution should be used with the current distribution.
4.4 Materials
4.5.1 Envi-18 Column 1). 12 mL, 2 g or equivalent.
4.5.2 Envi-Carb Column 1). 6 mL, 0.5 g or equivalent.
4.5.3 Sep-Pak NH2 column
2). 3 mL, 0.5 g or equivalent.
5 instruments and equipment
5.1 Gas Chromatography-Mass Spectrometer. Equipped with an electron impact source (EI).
5.2 Analysis of balance. 0.01 g and 0.0001 g.
5.3 Accelerated solvent extraction. equipped with 34 mL extraction tank.
5.4 nitrogen dryers.
5.5 Pear bottles..200mL.
5.6 pipettes. 1 mL.
6 Preparation and storage of samples
6.1 Preparation of the sample
Grain samples taken according to GB 5491 were crushed by pulverizer. All samples were passed through a standard screen of 425 μm, and the samples were prepared.
Divided into two, packed into a clean sample container, sealed and marked.
7 Analysis steps
7.1 Extraction
Weigh 10 g of sample (accurate to 0.01 g) and mix with 10 g of diatomaceous earth and move into a 34 mL extraction cell of an accelerated solvent extractor.
10.34MPa pressure, 80 ℃ under the conditions of heating 5min, with acetonitrile static extraction 3min, cycle 2 times, and then use the pool volume of 60% of the B
Nitrile (20.4 mL) was rinsed and purged with nitrogen for 100 seconds. After extraction, the extract was mixed and the samples with little oil content were mixed
Take a half of the volume of the extract (equivalent to 5 g of the sample), and take a quarter of the volume of the extract from the larger oil sample (equivalent to
2.5g sample volume), to be purified.
7.2 Purification
7.2.1 The Envi-18 column was pre-washed with 10 mL of acetonitrile and the Envi-18 column was placed on a holder and the pear-shaped flask was transferred to the above-
And the Envi-18 column was washed with 15 mL of acetonitrile, the extract and the washings were collected and the collected liquid was concentrated to about 1 mL on a rotary evaporator,
spare.
1) Envi-18 columns and Envi-Carb are the trade names of SUPELCO's products. This information is intended for the convenience of this standard and does not imply endorsement of the product. If it is
His equivalent product has the same effect, you can use these equivalent products.
2) The Sep-PakNH2 column is the product name of Waters' products, and this information is provided for the convenience of this standard and is not intended to be a recognition of the product. If other equivalent products
With the same effect, you can use these equivalent products.
7.2.2 Add about 2 cm of high anhydrous sodium sulfate to the Envi-Carb column and connect the column to the top of the Sep-PakNH2 column with 4 mL of acetonitrile-
Toluene solution (3 1) pre-wash the series column, the next pear-shaped bottle, into the fixed frame. The sample concentrate was transferred to a tandem column,
The vial was washed with 3 x 2 mL of acetonitrile-toluene solution and the wash was transferred to the column. A 50 mL reservoir was added to the column and 25 mL
Acetonitrile-toluene solution, all of the effluent was collected in a pear-shaped flask and concentrated in a water bath at 40 ° C to about 0.5 mL.
Add 2 x 5 mL n-hexane for solvent exchange twice, and finally make the sample volume about 1 mL, add 40 μL of internal standard solution, mix for
Determination by Gas Chromatography - Mass Spectrometry.
7.3 Determination
7.3.1 Gas Chromatography - Mass Spectrometry Reference Conditions
A) Column. DB-1701 (30m × 0.25mm × 0.25μm) quartz capillary column or equivalent;
B) Column temperature. 40 ℃ for 1min, then 30 ℃/min program temperature to 130 ℃, then 5 ℃/min temperature to 250 ℃,
And then to 10 ℃/min temperature to 300 ℃, keep 5 min;
C) Carrier gas. helium, purity ≥99.999%, flow rate. 1.2mL/min;
D) Inlet temperature. 290 ° C;
E) Injection volume. 1 μL;
F) Injection method. no split injection, 1.5 min after the opening of the diversion valve and septum purge valve;
G) electron bombardment source. 70 eV;
H) ion source temperature. 230 ° C;
I) GC-MS interface temperature. 280 ° C;
J) Select ion monitoring. Each compound selected a quantitative ion, 2 to 3 qualitative ions. Each group needs to be tested
Ions in accordance with the peak sequence, respectively, sub-time detection. The retention time of each compound, the quantitative ion, the qualitative ion and the quantitative ion
The ratio of ion abundances is given in Appendix B. Refer to Appendix C for the start time and dwell time of each group to detect ions.
7.3.2 Qualitative determination
When the sample is measured, if the retention time of the detected peaks is consistent with the standard sample, and after the background mass
In the figure, the selected ions are present, and the selected ion abundance ratio is consistent with the ion abundance ratio of the standard sample (relative abundance > 50%
Allow ± 10% deviation; relative abundance > 20% to 50%, allow ± 15% deviation; relative abundance > 10% to 20%, allow ± 20% deviation;
Relative abundance ≤ 10%, allowing ± 50% deviation), you can determine the presence of this pesticide or related chemicals in the sample. If it can not be confirmed, should be heavy
New injection, in scanning mode (with sufficient sensitivity) or by adding other confirmed ions or with other higher sensitivity analytical instruments
To confirm.
7.3.3 Quantitative determination
This method uses the internal standard method to determine the single ion quantification. The internal standard is epoxy heptachlor. To reduce the impact of the matrix, the quantitative criteria should be empty
White sample preparation of mixed standard working solution. The concentration of the standard solution should be close to the concentration of the compound to be tested. A, B, C, D, E of this method
Five groups of reference materials in the grain matrix selection of ion monitoring GC-MS Figure See Appendix D.
7.4 parallel test
Perform the parallel test of the same sample according to the above steps.
7.5 blank test
Unless the sample is not weighed, according to the above steps.
8 results are calculated and expressed
The result of gas chromatography-mass spectrometry can be calculated automatically by computer according to internal standard method, and can be calculated according to formula (1)
X = Cs ×
Ci
Asi
(1)
As Csi Ai m 1000
Where.
Residue of the test substance in milligrams per kilogram (mg/kg);
Cs
The concentration of the test substance in the standard working solution, in micrograms per milliliter (μg/mL);
The chromatographic peak area of the analyte in the sample solution;
As
Matrix chromatographic peak area of the test solution in the standard working solution;
Ci
The concentration of the internal standard in the sample solution, in micrograms per milliliter (μg/mL);
Csi
The concentration of the internal standard in the standard working solution of the matrix, in micrograms per milliliter (μg/mL);
Asi
Matrix chromatographic peak area of standard working solution;
Ai
The chromatographic peak area of the internal standard in the sample solution;
The final volume of the sample solution in milliliters (mL);
The mass of the sample represented by the sample solution, in grams (g).
The result of the calculation should be deducted from the blank value. The result of the measurement is expressed by the arithmetic mean of the parallel measurement, and the two valid digits are retained.
9 precision
9.1 The ratio of the absolute difference between the two independent determinations obtained under reproducible conditions and their arithmetic mean (percentage) shall be in accordance with the
Record the requirements of D.
9.2 The ratio of the absolute difference between the two independent determinations obtained under reproducibility and its arithmetic mean (percentage) shall be in accordance with the
Record the requirements of E.
10% limit and recovery rate
10.1 Quantitation limits
The quantitative limits of this method are given in Appendix A.
10.2 Recovery rate
When adding levels of LOQ, 4 × LOQ, add the recovery rate see Appendix G.
Appendix A
(Informative)
475 Pesticides and Related Chemicals Method Quantification limits, grouping, solvent selection and mixing Standard solution concentrations
A.1 475 Pesticides and Related Chemicals Chinese and English Name, Method Quantification, Grouping, Solvent Selection and Mixing Standard Solution Concentration
Table A.1
Serial number Chinese name English name
The limit of quantitation/
(Mg/kg)
Solvent
Mixed standard dissolved
Liquid concentration /
(Mg/L)
Internal standard epichlorohydrin Heptachlor-epox Toluene
Group A
1 2-Propyl Acetate Allidochlor 0.0500 Toluene 5
2 allyl grasses Dichlormid 0.0500 toluene 5
3 soil fungus Etridiazol 0.0750 Toluene 7.5
4 Chloromethylthiophosphate Chlormephos 0.0500 Toluene 5
5 Aniline Ling Propham 0.0250 Toluene 2.5
6 ring grass enemy Cycloate 0.0250 toluene 2.5
7 biphenyl diamine Diphenylamine 0.0250 Toluene 2.5
8 Ethylene Fluoroline Ethalfluralin 0.1000 Toluene 10
9 Phorate Phorate 0.0250 Toluene 2.5
10 Methyl Bium Phosphate Thiometon 0.0250 Toluene 2.5
11 Pentachlorobenzene Quintozene 0.0500 Toluene 5
12 deethyletrazine Atrazine-desethyl 0.0250
Toluene Acetone
(8 2)
2.5
13 Clamazone 0.0250 Toluene 2.5
14 Diazinon 0.0250 Toluene 2.5
15 Diposulfuron Fonofos 0.0250 Toluene 2.5
16 pyrimethazine Etrimfos 0.0250 toluene 2.5
17 Simaxin Simazine 0.0250 Methanol 2.5
18 Amphetamine Propetamphos 0.0250 Toluene 2.5
19 sec-butyl pass Secbumeton 0.0250 Toluene 2.5
20 Diplox Dichlofenthion 0.0250 Toluene 2.5
21 propargyl alcohol
Toluene Acetone
(9 1)
2.5
22 Zeke Mexacarbate 0.0750 Toluene 7.5
Aldrin 0.0500 Toluene 5
24 Amificin Dinitramine 0.1000 Toluene 10
25 Flies Phosphorus Ronnel 0.0500 Toluene 5
Potatoes Prometryne 0.0250 Toluene 2.5
27 Cycloprene Cyprazine 0.2000
Toluene Acetone
(9 1)
28 Vinylloxacin Vinclozolin 0.0250 Toluene 2.5
29 β-666 Beta-HCH 0.0250 Toluene 2.5
30 metalaxyl metalaxyl 0.0750 toluene 7.5
31 Chlorpyrifos Chlorochrifos (-ethyl) 0.0250 Toluene 2.5
32 methyl parathion Methyl-Parathion 0.1000 Toluene 10
Serial number Chinese name English name
The limit of quantitation/
(Mg/kg)
Solvent
Mixed standard dissolved
Liquid concentration /
(Mg/L)
33 anthraquinone anthraquinone 0.0250 dichloromethane 2.5
34 δ-666 Delta-HCH 0.0500 Toluene 5
35 times thiophosphate Fenthion 0.0250 toluene 2.5
36 malathion 0.1000 Toluene 10
37 Fenitrothion 0.0500 Toluene 5
38 Paraoxon-ethyl 0.1000 Toluene 10
39 Triadimefon 0.0500 Toluene 5
40 Parathion 0.1000 Toluene 10
41 pendimethalin Pendimethalin 0.1000 Toluene 10
Long Valley
Toluene Acetone
(9 1)
43 Acetylidene Chlorobenzene 0.0500 Toluene 5
44 Ethyl bromothiophosphate Bromophos-ethyl 0.0250 Toluene 2.5
45 Quetiapine Quinalphos 0.0250 Toluene 2.5
46 trans-Chlordane 0.0250 Toluene 2.5
Pondo Powder
48 Pyrazolamine Metazachlor 0.0750 Toluene 7.5
49 Benzylthio Fenothiocarb 0.0500 Acetone 5
Prothiophos 0.0250 Toluene 2.5
Flocculated Alcohol Chlorflurenol 0.0750
Toluene Acetone
(9 1)
7.5
52 Dieldrin Dieldrin 0.0500 Toluene 5
53 Procymidone 0.0250 Toluene 2.5
Methidathion 0.0500 Toluene 5
55 Diclofenac Napropamide 0.0750 Toluene 7.5
56 oxadoxine Oxadiazone 0.0250 Toluene 2.5
57 benzene line phosphorus Fenamiphos 0.0750 toluene 7.5
58 dexamethasone sulfur chloride Tetrasul 0.0250 toluene 2.5
59 Mite special Aramite 0.0250 Dichloromethane 2.5
60 Ethyl pyrimethanone Bupirimate 0.0250 Toluene 2.5
61 Moisturizer Carboxin 0.0750 Toluene 7.5
62 fluoroamide Flutolanil 0.0250 Toluene 2.5
63 p, p'-drop 4,4'-DDD 0.0250 toluene 2.5
Ethoxine.2000 Ethylene 5
65 thiophosate Sulprofos 0.0500 Toluene 5
66 Ethylenediazol-1 Etaconazole-1 0.0750 Toluene 7.5
67 Ethylenediazol-2 Etaconazole-2 0.0750 Toluene 7.5
Myclobutanil 0.0250 Toluene 2.5
69 Strawberry Diclofop-methyl 0.0250 Toluene 2.5
70 Propiconazole 0.0750 Toluene 7.5
71 Forskyl Phosphorus Fansulfothion 0.0500 Toluene 5
72 bifenthrin Bifenthrin 0.0250 n-hexane 2.5
73 Mirex Mintx 0.0250 Toluene 2.5
Serial number Chinese name English name
The limit of quantitation/
(Mg/kg)
Solvent
Mixed standard dissolved
Liquid concentration /
(Mg/L)
74 wheat rust Ling Benodanil 0.0750 toluene 7.5
Fluorophenylpyrrolidone Nuarimol 0.0500
Toluene Acetone
(9 1)
76 Methoxy Dioxide Methoxychlor 0.0250 Toluene 2.5
77 Oxolipine Oxadixyl 0.0250 Toluene 2.5
78 Tetramethrin
79 tebuconazole 0.0750 toluene 7.5
80 Fluorobenzene Norflurazon 0.0250
Toluene Acetone
(9 1)
2.5
81 pyridazine phosphoric acid Pyridaphenthion 0.0250 Toluene 2.5
82 Amimidophos Phosmet 0.0500 Toluene 5
83 Diclofenac Tetraflon 0.0250 Toluene 2.5
84 Oxidic acid Oxycarboxin 0.1500
Toluene Acetone
(9 1)
85 cis-permethrin cis-Permethrin 0.0250 toluene 2.5
86 trans-permethrin trans-Permethrin 0.0250 toluene 2.5
87 Pyralophosphate Pyrazophos 0.0500 Toluene 5
88 cypermethrin 0.0750 toluene 7.5
Fenvalerate 0.1000 Toluene 10
Deltamethrin 0.1500 Toluene 15
Group B
91 Green grass enemy EPTC 0.0750 Toluene 7.5
92 Butylate 0.0750 Toluene 7.5
93 Diclovir Dichlobenil 0.0050 Toluene 0.5
94 grams of grass enemy Pebulate 0.0750 toluene 7.5
95 Trichloromethylpyridine Nitrapyrin 0.0750 Toluene 7.5
96 - step out of phosphorus Mevinphos 0.0500 Toluene 5
97 Chloro Anisole Chloroneb 0.0250 Toluene 2.5
98 Tetrachloronitrobenzene Tecnazene 0.0500 Toluene 5
99 heptenol phosphate Heptanophos 0.0750 toluene 7.5
Hexachlorobenzene 0.0250 Toluene 2.5
101 off line phosphorus Ethoprophos 0.0750 toluene 7.5
102 cis - oat enemy cis-diallate 0.0500 toluene 5
Propoxlor
104 trans-diallate 0.0500 toluene 5
105 Trifluralin 0.0500 Toluene 5
106 Chlorohydrin Ling Chlorpropham 0.0500 Toluene 5
107 Chopsticks Sulfotep 0.0250 Toluene 2.5
108 Caffeine Sulfallate 0.0500 Toluene 5
109 α-6 6 Alpha-HCH 0.0250 Toluene 2.5
110 Tbn Sulfur Phosphor Terbufos 0.0500 Toluene 5
111 Tinting Terriereton 0.0750 Toluene 7.5
112 Ciprofloxacin Profluralin 0.1000 Toluene 10
Serial number Chinese name English name
The limit of quantitation/
(Mg/kg)
Solvent
Mixed standard dissolved
Liquid concentration /
(Mg/L)
113 Oxygen Phosphorus Dioxathion 0.1000 Toluene 10
Hydrochloride Fujin 0.0250 Toluene 2.5
115 Chloroofuran 0.0500 Toluene 5
116 Chloronitamine Dicloran 0.0500
Toluene Acetone
(9 1)
117 Terbuthylazine 0.0250 Toluene 2.5
118 Green Valley Long Monolinuron 0.1000 Toluene 10
119 Fenfluazan Flufenoxuron 0.0750
Toluene Acetone
(8 2)
7.5
120 Crack nitrile Cyanophos 0.0500 Toluene 5
121 Chlorpyrifos-methyl 0.0250 Toluene 2.5
Cleavidone Desmetryn 0.0250 Toluene 2.5
123 Dimethachlor 0.0750 Toluene 7.5
124 Alachlor 0.0750 Toluene 7.5
125 Methylpyrimidine Pirimiphos-methyl 0.0250 Toluene 2.5
126 Tertin Pure Terbutryn 0.0500 Toluene 5
127 Shabu Dan Thiobencarb 0.0500 Toluene 5
128 Propionate Aspon 0.0500 Toluene 5
Alkaline Dicofol 0.4000 Toluene 40
130 Metolachlor 0.0250 Toluene 2.5
131 Oxy-chlordane 0.0250 Toluene 2.5
132 Methoprene 0.1000 Toluene 10
133 bromothiophosphate Bromofos 0.0500 Toluene 5
Organic Ethyl Diclofen 5
Isopropalin 0.0500 Toluene
136 Endosulfan I Endosulfan I 0.1500 Toluene 15
Propoxil
Toluene Acetone
(9 1)
138 Isofenphos 0.0500 Toluene 5
139 Crucomate 0.1500 Toluene 15
140 Insect Pests. Chlorfenvinphos 0.0750 Toluene 7.5
141 cis-chlordane cis-Chlordane 0.0500 Toluene 5
142 Toluene Fluorosulfonamide Tolylfluanide 0.0750 Toluene 7.5
143 p, p'-drop i 4,4'-DDE 0.0250 Toluene 2.5
144 Butachlor 0.0500 Toluene 5
145 Bacteria Chlozolinate 0.0500 Toluene 5
146 Cobalt Crotoxyphos 0.1500 Toluene 15
Iodophanate Iodofenphos 0.0500 Toluene 5
148 Insecticides Tetrachlorvinphos 0.0750 Toluene 7.5
149 Chlorobromon Chlorbromuron 0.6000 Toluene 60
Phenanthroline Profem
...
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