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SN/T 2331-2016: Method for the determination of sugar in cotton fiber for import and export - Hight performance liquid chromatography(HPLC)method
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Std ID	Version	USD	Buy	Deliver [PDF] in	Title (Description)
SN/T 2331-2016	English	229	Add to Cart	3 days [Need to translate]	Method for the determination of sugar in cotton fiber for import and export - Hight performance liquid chromatography(HPLC)method
SN/T 2331-2009	English	279	Add to Cart	3 days [Need to translate]	Raw material of textiles. Determination of sugar contents in cotton. High performance liquid chromatography (HPLC) method

SN/T 2331-2016: Method for the determination of sugar in cotton fiber for import and export - Hight performance liquid chromatography(HPLC)method

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Method for the ditermination of sugar in cotton fiber for import and export-Hight performance liquid chromatography (HPLC) method ICS 59.080.30 W04 People's Republic of China Exit Inspection and Quarantine standards Replacing SN/T 2331-2009 Import and export of cotton fiber sugar test methods High performance liquid chromatography Hightperformance liquid chromatography (HPLC) method 2016-12-12 released 2017-07-01 implementation People's Republic of China General Administration of Quality Supervision, Inspection and Quarantine released

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard replaces SN/T 2331-2009 "Textile raw materials cotton sugar content detection method of high performance liquid chromatography," and SN/T 2331-2009 compared to the main technical changes are as follows. --- Removed the scope of "quick test"; --- Increased in the range of "including glucose, lactose, cellobiose, melibiose, melezitose"; --- Increased 5.9, on the provisions of the test water; --- Removed 7.5 in the "analysis of the standard solution according to the above analysis conditions"; --- Added Chapter 11 "Test Report." This standard also made the following editorial changes. --- Modify the standard Chinese and English names. This standard is proposed and managed by the National Certification and Accreditation Administration Committee. This standard was drafted by Tianjin Entry-Exit Inspection and Quarantine Bureau, People's Republic of China. The main drafters of this standard. Zhao Qing, Wang Kun, Feng Zhi Feng, Zhou Lei. This standard replaces the standards previously issued as. --- SN/T 2331-2009. Import and export of cotton fiber sugar test methods High performance liquid chromatography

1 Scope

This standard specifies the cotton sugar content of high performance liquid chromatography (HPLC) method. This standard applies to the determination of cotton sugar content, including glucose, lactose, cellobiose, melibiose, melezitose.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version applies to this article Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB/T 6682 analytical laboratory water specifications and test methods

3 Terms and definitions

The following terms and definitions apply to this document. 3.1 Internal sugar internalsaccharide The self-growth of cotton fiber produces soluble sugar, also known as plant physiological sugar, such as sugar, glucose, lactose, sucrose, cellobiose and so on. 3.2 Exo sugar externalsaccharide Affected by insect contact with cotton, or fall cold, dry cotton leaf nectary secretions, soluble on the surface of cotton fibers Sugar, also known as exogenous substances or insect sugars, such as melibiose, melezitose and the like. 3.3 Sugar in cotton fiber sugarcontentofcottonfiber The total amount of soluble sugars contained, including internal and external sugars.

4 principle

With water-soaked cotton fibers, the extract was concentrated, fixed volume, with a series of amino-bonded column for quantitative analysis by high performance liquid chromatography.

5 reagent

5.1 Acetonitrile. Chromatographic purity. 5.2 glucose. Purity ≥ 99%. 5.3 lactose. Purity ≥ 99%. 5.4 Maltose Purity ≥99%. 5.5 Melibiose. Purity ≥98%. 5.6 Mason sugar purity of ≥ 99%. ...