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SN/T 4042-2014 English PDF

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SN/T 4042-2014: Determination of azide in wines for export
Status: Valid
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SN/T 4042-2014English289 Add to Cart 3 days [Need to translate] Determination of azide in wines for export Valid SN/T 4042-2014

PDF similar to SN/T 4042-2014


Standard similar to SN/T 4042-2014

GB/T 394.1   GB 4927   GB/T 18356   SN/T 5652.14   SN/T 5658.2   SN/T 5658.1   

Basic data

Standard ID SN/T 4042-2014 (SN/T4042-2014)
Description (Translated English) Determination of azide in wines for export
Sector / Industry Commodity Inspection Standard (Recommended)
Classification of Chinese Standard X61
Classification of International Standard 67.160.10
Word Count Estimation 11,123
Date of Issue 12/1/2014
Date of Implementation 5/1/2015
Regulation (derived from) State-Quality-Inspection-accreditation [2014] 614
Issuing agency(ies) General Administration of Customs
Summary This standard specifies the method for determination of liquid chromatography and ion chromatography export wine sodium azide. This standard applies to fermented, distilled determination of sodium nitride content type and preparation of liquor in the stac

SN/T 4042-2014: Determination of azide in wines for export

---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 export wine sodium azide) People's Republic of China Entry-Exit Inspection and Quarantine Standards Determination of export wine sodium azide Issued on. 2014-11-19 2015-05-01 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 is proposed and managed by the National Certification and Accreditation Administration Committee. This standard was drafted. People's Republic of China Zhenjiang Exit Inspection and Quarantine. The main drafters of this standard. Zhou Hongbin, Li Ping, Lu Ping, under the Circumstances Zhu Kim Lien Yu Yang. Determination of export wine sodium azide

1 Scope

This standard specifies the method for determination of liquid chromatography and ion chromatography export wine sodium azide. This standard applies to fermented, distilled determination of sodium nitride content type and preparation of liquor in the stack. The first method of liquid chromatography

2 Method summary

Samples of sodium azide at pH = 4, citric acid - sodium citrate buffer system with 3,5-nitrobenzoyl chloride derivatization, By liquid chromatography with UV detector and quantified by external standard.

3 Reagents and materials

Unless otherwise specified, reagents were of analytical grade, test water line with a water GB/T 6682 regulations. 3.1 citric acid. 3.2 sodium citrate. 3.3 acetonitrile (HPLC grade). Sodium azide 3.4 standard substance. sodium azide, purity of greater than or equal to 99.0%. 3.5 Sodium azide standard stock solution. accurately weighed amount of sodium azide (accurate to 0.0001g), formulated with water to a concentration of 1.0mg/mL Standard stock solution. The solution was stored at 0 ℃, shelf life of six months. 3.6 3,5-nitrobenzoyl chloride solution. 0.1g3,5- two-nitrobenzoyl chloride dissolved in 100mL acetonitrile. 3.7 pH = 4 citric acid - sodium citrate buffer solution. 131mL0.1mol/L citric acid solution 69mL0.1mol/L citric acid Sodium. WARNING. Sodium azide dangerous substance, long-term exposure to harmful, formulation and use of this reagent should be equipped with protective measures to ensure that Safety.

4 instruments and equipment

4.1 liquid chromatograph. equipped with a UV detector. 4.2 Balance. a sense of the amount of 0.0001g. 4.3 vortex shaker. Than 4.4 colorimetric tube. 10mL, stoppered.

5 measuring step

5.1 Sample Preparation Pipette 2mL sample is placed in 10mL colorimetric tube (if like beer contains air bubbles, the first ultrasonic degassing), add lemon 3mLpH = 4

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