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Determination of thiamethoxam and its metabolite clothianidin residues in agricultural products for export. LC-MS/MS method
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Basic data
| Standard ID | SN/T 3139-2012 (SN/T3139-2012) |
| Description (Translated English) | Determination of thiamethoxam and its metabolite clothianidin residues in agricultural products for export. LC-MS/MS method |
| Sector / Industry | Commodity Inspection Standard (Recommended) |
| Classification of Chinese Standard | X04 |
| Classification of International Standard | 67.040 |
| Word Count Estimation | 24,238 |
| Quoted Standard | GB/T 6682 |
| Regulation (derived from) | National Quality Inspection (2012) 237; |
| Issuing agency(ies) | General Administration of Customs |
| Summary | This standard specifies the agricultural products thiamethoxam and clothianidin residues liquid chromatography mass spectrometry/mass spectrometry. This standard applies to rice, beans, chestnuts, spinach, lettuce, onion, eggplant, potatoes, oranges, mush |
SN/T 3139-2012: Determination of thiamethoxam and its metabolite clothianidin residues in agricultural products for export. LC-MS/MS method
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Determination of thiamethoxam and its metabolite clothianidin residues in agricultural products for export.LC-MS/MS method
People's Republic of China Entry-Exit Inspection and Quarantine Standards
Agricultural exports thiamethoxam and its metabolite clothianidin
Determination of residues
Liquid chromatography - mass spectrometry/mass spectrometry
LC-MS/MSmethod
Issued on. 2012-05-07
2012-11-16 implementation
People's Republic of China
The State Administration of Quality Supervision, Inspection and Quarantine released
Foreword
This standard was drafted in accordance with GB/T 1.1-2009 given rules.
Please note that some of the content of this document may involve patents. Release mechanism of the present document does not assume responsibility for the identification of these patents.
This standard is proposed and managed by the National Certification and Accreditation Administration Committee.
This standard was drafted. People's Republic of China Beijing Entry-Exit Inspection and Quarantine Bureau, People's Republic of China Shandong Entry-Exit Inspection and
Quarantine Bureau.
The main drafters of this standard. Wang Jinhua, Zhang Rong, Feng Qian, Li Xiaolin, Liu Yan, Tangzhi Xu.
Agricultural exports thiamethoxam and its metabolite clothianidin
Determination of residues
Liquid chromatography - mass spectrometry/mass spectrometry
1 Scope
This standard specifies the agricultural products thiamethoxam and clothianidin residues in liquid chromatography - mass spectrometry/mass spectrometry methods.
This standard applies to rice, beans, chestnuts, spinach, lettuce, onions, eggplant, potatoes, oranges, mushrooms, tea and other products of plant origin and
Chicken liver, pork, milk and other products of animal origin thiamethoxam, clothianidin residues in the detection and confirmation.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein
Member. For undated references, the latest edition (including any amendments) applies to this document.
Laboratory use specifications and test methods GB/T 6682 Analysis
3 PRINCIPLE OF THE METHOD
With 0.1% acetic acid - acetonitrile ultrasonic extraction sample of thiamethoxam and clothianidin residues using matrix dispersive SPE purification agent, super
High performance liquid chromatography - mass spectrometry/mass spectrometer, external standard.
4 Reagents and materials
Unless otherwise indicated, the reagents used were HPLC grade water as a water line with GB/T 6682 regulations.
4.1 acetonitrile.
4.2 ammonium acetate.
4.3 acetic acid. AR.
4.4 formic acid.
4.5 methanol.
4.6 n-hexane.
4.7 anhydrous magnesium sulfate (MgSO4). AR.
4.8 anhydrous sodium sulfate (Na2SO4). AR.
4.9 N- propyl-ethylenediamine (PSA) Adsorbent. particle diameter of 40μm ~ 60μm.
4.10 GCB adsorbent (GCB). particle diameter of 120μm ~ 400μm.
4.11 octadecylsilane (ODS) bonded phase adsorbents (C18). particle diameter of 40μm ~ 60μm.
4.12 Dispersive Solid Phase Extraction agent.
a) for rice, eggplant, onions, potatoes, citrus sample. 50mgPSA (4.9), 150mgMgSO4 (4.7);
b) for spinach, lettuce samples. 50mgPSA, 150mgMgSO4,10mgGCB (4.10);
c) for chestnuts, mushrooms, milk samples. 50mgPSA, 150mgMgSO4,50mgC18 (4.11);
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