GB/T 23379-2009 English PDF

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GB/T 23379-2009: Method for determination of imidacloprid residues in fruits, vegetables and teas -- High performance liquid chromatographic method
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 23379-2009	209	Add to Cart	3 days	Method for determination of imidacloprid residues in fruits, vegetables and teas -- High performance liquid chromatographic method	Valid

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Basic data

Standard ID: GB/T 23379-2009 (GB/T23379-2009)
Description (Translated English): Method for determination of imidacloprid residues in fruits, vegetables and teas -- High performance liquid chromatographic method
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: X04
Classification of International Standard: 67.050
Word Count Estimation: 9,954
Date of Issue: 2009-04-08
Date of Implementation: 2009-05-01
Regulation (derived from): National Standard Approval Announcement 2009 No.3 (Total No.143)
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary: This standard specifies the fruit, vegetables and tea determination of imidacloprid pesticide residues. This standard applies to apples, tomatoes, , cucumber, carrots and other fruits and vegetables, and the determination of imidacloprid pesticide residues in tea pears, bananas. This standard method detection limit is: Fruit 0 02 mg/kg, vegetables and tea, 0. 05 mg/kg.

GB/T 23379-2009: Method for determination of imidacloprid residues in fruits, vegetables and teas -- High performance liquid chromatographic method

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Method for determination of imidacloprid residues in fruits, vegetables and teas.High performance liquid chromatographic method ICS 67.050 X04 National Standards of People's Republic of China Determination of residues in fruits, vegetables and tea imidacloprid High Performance Liquid Chromatography Posted 2009-04-08 2009-05-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Table of Contents

Introduction Ⅲ 1 Scope 1 2 Normative references 1 3 Principle 1 4 Reagents and materials 1 5. Apparatus 2 6 measuring step 2 7 3 Calculation Results 8 Precision 3 Appendix A (informative) liquid chromatogram of the sample solution and part of the standard imidacloprid blank samples and spiked samples 4

Foreword

Appendix A of this standard is an informative annex. The standard proposed by the Anhui Provincial Quality and Technical Supervision. The standard by the China National Institute of Standardization. This standard was drafted. Anhui Agricultural University, National Agricultural Processed Food Quality Supervision and Inspection Center, Anhui national agricultural standardization and monitoring Testing center. The main drafters of this standard. Wan Xiaochun, Cheng Jing, Hou Ruyan, Chen Ge, Cai Hui-mei, Wang Suhong, Du Xianfeng, Zang love incense. Determination of residues in fruits, vegetables and tea imidacloprid High Performance Liquid Chromatography

1 Scope

This standard specifies the method for determination of fruits, vegetables and tea imidacloprid pesticide residues. This standard applies to apples, pears, bananas, tomatoes, cucumbers, carrots and other fruits and vegetables, tea and determination of imidacloprid pesticide residues. The detection limit of this standard are. fruit 0.02mg/kg, vegetables and tea 0.05mg/kg.

2 Normative references

The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard. GB/T 6682 analytical laboratory use specifications and test methods (GB/T 6682-2008, ISO 3696. 1987, MOD) GB/T 8855 fresh fruits and vegetables sampling method (GB/T 8855-2008, ISO 874. 1980, IDT) Principle 3 Imidacloprid by acetonitrile extraction, salting concentrate was subjected to solid phase extraction, acetonitrile, HPLC 270nm Testing.

4 Reagents and materials

Unless otherwise indicated, water GB/T 6682 a water regulations. 4.1 acetonitrile. chromatography. 4.2 Sodium hydroxide. AR. 4.3 Sodium chloride. AR. 4.4 SPE (ENVI-18 column, 3mL, 0.5g or equivalent person). 4.5 organic membrane. pore size 0.45μm. Imidacloprid 4.6 Standard substance. purity of greater than 99%. 4.7 25% acetonitrile. acetonitrile and water by 3 by volume ratio. 4.8 pesticide standard solution 4.8.1 Standard stock solution. Weigh about 10mg (accurate to 0.10mg) in 10mL volumetric flask, add acetonitrile sonication standards, Standard stock solution dubbed 1000μg/mL or so, -18 ℃ refrigerator. 4.8.2 mixed standard solution. the need to use a diluted basis of the detection of different concentrations of standard solution, 4 ℃ refrigerator. Mixed Standard Solution in the dark at 4 ℃, can be used for two months. 4.9 purification process solution A (20mmol/LNaOH, NaCl saturated solution). Weigh 0.8gNaOH in 100mL beaker, After adding a small amount of water to fully dissolve, then added sodium chloride to saturate, then poured into a 1000mL volumetric flask, then with saturated aqueous sodium chloride solution To the mark. 4.10 purifying process solution B (20mmol/LNaOH solution). Weigh 0.8gNaOH in 100mL beaker, add a small amount of After fully dissolved water into 1000mL volumetric flask. ......

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