GB/T 22243-2008 English PDF

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GB/T 22243-2008: Determination of residue limits of fluroxypyr in rice, vegetable and fruit
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 22243-2008	139	Add to Cart	3 days	Determination of residue limits of fluroxypyr in rice, vegetable and fruit	Valid

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Basic data

Standard ID: GB/T 22243-2008 (GB/T22243-2008)
Description (Translated English): Determination of residue limits of fluroxypyr in rice, vegetable and fruit
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: C53
Classification of International Standard: 67.040
Word Count Estimation: 6,640
Date of Issue: 2008-07-31
Date of Implementation: 2008-11-01
Regulation (derived from): National Standard Approval Announcement 2008 No.12 (Total No.125)
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 rice, determination fruit sulfentrazone residues, vegetables. This standard applies to rice, determination fruit sulfentrazone residues, vegetables. This standard detection limit of 1. 2ng, when the sample volume is quite 0. 20g, the detection limit of 0. 006 mg/kg. This standard of the best linear range: 0. 02��g/mL ~ 1. 00��g/mL.

GB/T 22243-2008: Determination of residue limits of fluroxypyr in rice, vegetable and fruit

---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.
Determination of residue limits of fluroxypyr in rice, vegetable and fruit ICS 67.040 C53 National Standards of People's Republic of China Rice, vegetables, fruit fluroxypyr Determination of residues Posted 2008-07-31 2008-11-01 implementation People's Republic of China Ministry of Health Standardization Administration of China released

Foreword

This standard is proposed and administered by the People's Republic of China Ministry of Health. This standard is drafted by. Jilin Provincial Health Monitoring and Inspection Center. The main drafters of this standard. red light side, Liu Sijie, Li Qing, Bai Shuguang, Cui Yong, Ji Wenliang Rong will. This standard is the first release. Rice, vegetables, fruit fluroxypyr Determination of residues

1 Scope

This standard specifies the rice, vegetables, fruits determination fluroxypyr residues. This standard applies to rice, vegetables, fruit fluroxypyr residues determination. The standard detection limit of 1.2ng, when the injection volume quite 0.20g, detection was 0.006mg/kg. This standard is the best linear range. 0.02μg/mL ~ 1.00μg/mL. Principle 2 Rice, vegetables, fruit fluroxypyr ethyl acetate extraction, fluroxypyr and a salt dissolved in water, acidified with sulfuric acid aqueous phase After extraction with chloroform, the extract was dissolved in methanol solution was concentrated to dryness, high performance liquid chromatography, separation by reverse phase chromatography, according to Paul Retention time qualitative and quantitative peak area comparison.

3 Reagents

3.1 methanol (CH3OH). 3.2 sodium acetate (CH3COONa). 3.3 ethyl acetate (CH3COOC2H5). 3.4 phosphoric acid (H3PO4). 3.5 Sodium carbonate (Na2CO3). 3.6 chloroform (CHCl3). 3.7 anhydrous sodium sulfate (Na2SO4). 3.8 sulfate (H2SO4). 3.9 fluroxypyr stock standard solution. Accurately weigh 0.1000g fluroxypyr (purity ≥99%), dissolved in methanol and set Volume to 100mL, this solution is equivalent to 1.00mg per ml fluroxypyr (save for three months). 3.10 fluroxypyr standard solution. When you use a standard stock solution was diluted 10-fold with methanol, dubbed equivalent to 100μg per milliliter The fluroxypyr through 0.45μm membrane filter and set aside.

4 Instrument

4.1 high performance liquid chromatography (with UV detector). 4.2 rotary evaporator. 4.3 nitrogen blowing instrument. 4.4 ultrasonic oscillator. Step 5 Analysis 5.1 Sample Processing 5.1.1 Vegetables and fruits. vegetables, fruits and edible parts chopped. 5.1.2 Rice. A sample mill, through a 20 mesh screen. ......

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