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LST6139-2020: Inspection of grain and oils--Rapid screen determination for organophosphate and carbamate pesticide residues in grains
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| LS/T 6139-2020 | English | 189 |
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Inspection of grain and oils--Rapid screen determination for organophosphate and carbamate pesticide residues in grains
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LS/T 6139-2020
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Basic data | Standard ID | LS/T 6139-2020 (LS/T6139-2020) | | Description (Translated English) | Inspection of grain and oils--Rapid screen determination for organophosphate and carbamate pesticide residues in grains | | Sector / Industry | Food & Beverage Industry Standard (Recommended) | | Classification of Chinese Standard | X11 | | Classification of International Standard | 67.040 | | Word Count Estimation | 8,867 | | Date of Issue | 2020 | | Date of Implementation | 2020-07-21 | | Issuing agency(ies) | National Grain and Material Reserves Administration | LST6139-2020: Inspection of grain and oils--Rapid screen determination for organophosphate and carbamate pesticide residues in grains
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Inspection of grain and oils--Rapid screen determination for organophosphate and carbamate pesticide residues in grains
ICS 67.040
X11
People's Republic of China Food Industry Standard
Grain and oil inspection of organic phosphorus and
Rapid qualitative detection of carbamate pesticide residues
2020-01-21 release
2020-07-21 implementation
Issued by the National Grain and Material Reserve Bureau
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard was proposed by the National Grain and Material Reserve Bureau.
This standard is under the jurisdiction of the National Grain and Oil Standardization Technical Committee (SAT/TC270).
This standard was drafted by. National Academy of Food and Material Reserve Research Institute, Guangdong Food Science Research Institute, Shandong Grain and Oil Testing
Xin, Shaanxi Grain and Oil Product Quality Supervision and Inspection Center, China National Grain Management Group Co., Ltd., Beijing Grain, Oil and Food Inspection Institute, Heilongjiang
Provincial Grain Quality and Safety Monitoring Center, Anhui Province Grain and Oil Products Quality Supervision and Inspection Station, Inner Mongolia Autonomous Region Grain and Oil Quality Testing Center, Hubei Province
Grain, Oil and Food Quality Supervision and Inspection Center, Shanxi Grain Quality Monitoring Center, Henan Provincial Grain Science Research Institute Co., Ltd., Beijing Zhongjian Baotai
Biotechnology Co., Ltd.
The main drafters of this standard. Ye Jin, Wang Songxue, Wang Yajun, Wang Pei, Jiang Guozhen, Li Keqiang, Ouqin, Ji Lanyang, Hu Bin, Qiu Qingfeng, Sun Tinglin,
Kang Ran, Niu Mengyu, Li Hua.
Grain and oil inspection of organic phosphorus and
Rapid qualitative detection of carbamate pesticide residues
1 Scope
This standard specifies the principles, reagents and reagents for rapid qualitative detection of organophosphorus and carbamate pesticide residues in grains and their products
Materials, instruments and equipment, sample preparation and result analysis.
This standard applies to the rapid qualitative detection of organophosphorus and carbamate pesticide residues in grains and their products.
The method detection limit of this standard is shown in Appendix A.
2 Normative references
The following standards are essential for the application of this document. For dated references, only the dated version applies to this article
Pieces. For the cited documents without date, the latest version (including all amendments) applies to this document.
GB 2763 National Food Safety Standard Maximum Residue Limits of Pesticides in Food
GB/T 5491 Grain and Oil Inspection Sampling and Sampling Method
GB/T 6682 Analysis laboratory water specifications and test methods
3 Principle
Organophosphorus and carbamate pesticide residues in the sample inhibit the reaction of insect esterase and enzyme receptor, and the fluorescent substrate is activated to emit fluorescence
The signal is weakened, and the enzyme inhibition rate of organophosphorus and carbamate pesticides in this sample is calculated by the change of the fluorescence signal and the corresponding limit
Enzyme inhibition rate comparison, so as to quickly determine whether the organophosphorus and carbamate pesticides in the sample exceed the standard.
4 Reagents and materials
Unless otherwise specified, the reagents used in this method are analytically pure, and the water is secondary water specified in GB/T 6682.
4.1 Acetone.
4.2 Ethyl acetate.
4.3 Anhydrous sodium sulfate.
4.4 Ethyl acetate-acetone solution (95. 5, volume ratio). Take 5mL acetone and add 95mL ethyl acetate, mix well.
4.5 Sodium sulfate solution. Take.200g of anhydrous sodium sulfate, dissolve in water and dilute to 1000mL, mix well.
4.6 Phosphate buffer solution (hereinafter referred to as PBS). Weigh 8.00g sodium chloride, 1.20g disodium hydrogen phosphate (or 2.92g hydrogen phosphate dodecahydrate)
Disodium), 0.20g potassium dihydrogen phosphate, 0.20g potassium chloride, dissolved in 900mL water, adjust the pH to 7.4 ± 0.1 with hydrochloric acid, and dilute with water to
1000mL.
4.7 1% TritonX-100 (or Tween-20) in PBS. take 10 mL TritonX-100 (or Tween-20), dilute with PBS to
1000mL.
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