SN/T 4675.5-2016 in English

VALID

Determination of organic acids in wine for export一Ion chromatography

Issued on:2016-12-12
Implemented on:2017-07-01
File Format:PDF
Delivery:Via email within 1~3 business days

Price(USD)： $130.00
$127.00

Standard No:	SN/T 4675.5-2016
Document status:	VALID
Title in English:	Determination of organic acids in wine for export一Ion chromatography
Title in Chinese:	出口葡萄酒中有机酸的测定离子色谱法
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 1~3 business days
Issued on:	2016-12-12
Implemented on:	2017-07-01
Professional Classification:	SN-Import&Export Inspection
Related Keywords:	organic acid standard export一ion chromatography introduction standard technical framework test items linear range organic acids dionex ics-1500 ion chromatography system wine sample concentration
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Introduction

Standard Technical Framework

Test Items	Linear Range (mg/L)	Retention Time (min)	Detection Limit
Lactic Acid(C3H6O3)	200-4000	18.7	1.0mg/L
Acetic Acid(C2H4O2)	200-4000	20.3	1.0mg/L
Malic acid(C4H6O5)	400-8000	52.7	2.0mg/L

Key Technical Points

A Dionex ICS-1500 ion chromatography system was used, equipped with an AS11-HC analytical column (4mm×250mm) and an AG11-HC guard column (4mm×50mm). A gradient elution program was used for the mobile phase. The column temperature was maintained at 35°C, the flow rate was 0.8mL/min, and the detector operating current was 150mA.

Implementation Notes

Sample Pretreatment: Filter through a 0.45μm filter membrane. When the wine sample concentration exceeds the linear range, it should be diluted at a ratio of 1:100 and re-measured.

Standard Solution Preparation: The purity of each organic acid standard must be ≥99%, the stock solution concentration is 1000mg/L, and the working curve must contain 5 concentration points.

Method Validation Data

Inter-laboratory validation showed that the spiked recoveries of this method for the five organic acids were 92%-108%, with a relative standard deviation (RSD) of ≤2.8%, meeting the technical requirements of OIV International Wine Organization MA-AS313-16.

More samples: GB 18306-2015 DL/T 5154-2012 DL/T 368-2010

Sample only — not a preview of SN/T 4675.5-2016

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