SN/T 0931-2013 English PDF

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SN/T 0931-2013: Determination of prohexadione-calcium residues in cereals for export. LC method
Status: Valid

SN/T 0931: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
SN/T 0931-2013	389	Add to Cart	3 days	Determination of prohexadione-calcium residues in cereals for export. LC method	Valid
SN/T 0931-2000	599	Add to Cart	4 days	Tone ring calcium residues in cereals for export	Obsolete

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Basic data

Standard ID: SN/T 0931-2013 (SN/T0931-2013)
Description (Translated English): Determination of prohexadione-calcium residues in cereals for export. LC method
Sector / Industry: Commodity Inspection Standard (Recommended)
Classification of Chinese Standard: X11
Classification of International Standard: 67.060
Word Count Estimation: 15,138
Older Standard (superseded by this standard): SN/T 0931-2000
Quoted Standard: GB/T 6682
Regulation (derived from): National quality recognition (2013), No. 464; industry standard filing Notice No. 1 of 2014 (No. 169 overall)
Issuing agency(ies): General Administration of Customs
Summary: This standard specifies the method of liquid chromatography to detect calcium in cereals residues of ring tone detection. This standard applies to rice, wheat, maize, potato prohexadione calcium residue testing.

SN/T 0931-2013: Determination of prohexadione-calcium residues in cereals for export. LC 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.
Determination of prohexadione-calcium residues in cereals for export.LC method People's Republic of China Entry-Exit Inspection and Quarantine Standards Replacing SN 0931-2000 Cereals for export prohexadione calcium residues in Liquid chromatography detection methods Issued on. 2013-08-30 2014-03-01 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. This standard replaces SN 0931-2000 "cereals for export prohexadione calcium residues in." This standard compared with SN 0931-2000, in addition to editorial changes, the major technical changes are as follows. --- Standard name from "cereals for export prohexadione calcium residues in" to "cereals for export prohexadione calcium Residues Liquid chromatography method "; --- Expand the scope of the standard testing; --- Remove the sampling section. This standard is proposed and managed by the National Certification and Accreditation Administration Committee. This standard was drafted. People's Republic of China Shandong CIQ. The main drafters of this standard. Lee Soo-Yong, Gengjin Pei, bell, road Yin, Li Xiaoyu, Yu Jie, Cao Peng, Zhang Ning. This standard replaces the standards previously issued as follows. --- SN 0931-2000. Cereals for export prohexadione calcium residues in Liquid chromatography detection methods

1 Scope

This standard specifies the method of liquid chromatography in cereals for export prohexadione calcium residues in detection. This standard applies to rice, wheat, corn, potatoes in prohexadione calcium residues detected.

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 Method summary

Samples remaining prohexadione calcium with sulfuric acid and acetone extraction, liquid extraction by liquid-liquid partition with C18 solid-phase extraction (SPE), distribution purple Liquid chromatograph external detectors, external standard.

4 Reagents and materials

Unless otherwise specified, reagents were of analytical grade water as a water GB/T 6682 regulations. 4.1 acetonitrile. chromatography. 4.2 acetone. chromatography. 4.3 Methanol. chromatographically pure. 4.4 ethyl acetate. chromatography. 4.5 hexane. chromatographically pure. 4.6 formic acid. pure class distinctions. 4.7 concentrated sulfuric acid. 4.8 hydrochloric acid. 4.9 over anhydrous sodium sulfate. After burning 650 ℃ 4h, placed in the dryer set aside. 4.10 anhydrous sodium bicarbonate. 4.11 1% sodium bicarbonate solution. Weigh accurately 1g of anhydrous sodium bicarbonate (4.10), dissolved in water and diluted to 100mL. 4.12 0.4mol/L sulfuric acid solution. Measure 11.11mL concentrated sulfuric acid (4.7) slowly inject the right amount of water, cooled to room temperature, diluted with water Diluted to 500mL, and mix. 4.13 4mol/L hydrochloric acid solution. Measure 166.67mL hydrochloric acid (4.8), add water and dilute to 500mL. 4.14 C18 solid phase extraction column. 1000mg/6mL or equivalent person. 4.15 phase flow (water - acetonitrile - formic acid mixture, by volume, 119 .01). Measure 550mL deionized water, 450mL of acetonitrile was added (4.1), was added 0.5mL of formic acid (4.6) and mix. 4.16 prohexadione calcium standard (Prohexadionecalcium, C10H10CaO5, CAS number. 127277-53-6). purity > 99.8%. ......

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