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SN/T 0859-2016 English PDF

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SN/T 0859-2016: Determination of dehydroacetic acid in condiments for export--Ultraviolet spectrophotometric method
Status: Valid

SN/T 0859: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
SN/T 0859-2016English329 Add to Cart 3 days [Need to translate] Determination of dehydroacetic acid in condiments for export--Ultraviolet spectrophotometric method Valid SN/T 0859-2016
SN/T 0859-2000English199 Add to Cart 2 days [Need to translate] Method for the determination of dehydroacetic acid in soybean sauce for import and export Obsolete SN/T 0859-2000

PDF similar to SN/T 0859-2016


Standard similar to SN/T 0859-2016

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Basic data

Standard ID SN/T 0859-2016 (SN/T0859-2016)
Description (Translated English) Determination of dehydroacetic acid in condiments for export--Ultraviolet spectrophotometric method
Sector / Industry Commodity Inspection Standard (Recommended)
Classification of Chinese Standard X66
Word Count Estimation 14,122
Date of Issue 2016-08-23
Date of Implementation 2017-03-01
Older Standard (superseded by this standard) SN/T 0859-2000
Regulation (derived from) State-Quality-Inspection-Certification (2016)438
Issuing agency(ies) General Administration of Customs

SN/T 0859-2016: Determination of dehydroacetic acid in condiments for export--Ultraviolet spectrophotometric 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.
(Export flavoring - Determination of dehydroacetic acid - Ultraviolet spectrophotometric method) People's Republic of China Entry-Exit Inspection and Quarantine Industry Standard Replace SN/T 0859-2000 Determination of dehydroacetic acid in export seasonings UV spectrophotometry Published on.2016-08-23 2017-03-01 implementation People's Republic The General Administration of Quality Supervision, Inspection and Quarantine issued

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard replaces SN/T 0859-2000 "Determination of Dehydroacetic Acid in Import and Export Soy Sauce". This standard and SN/T 0859- Compared with.2000, the main technical changes except editorial changes are as follows. --- The scope of application is based on the original standard (soy sauce), adding vinegar, oyster sauce, barbecue sauce, sauce; --- Increased the limit of quantitative detection (LOQ). This standard is proposed and managed by the National Certification and Accreditation Administration. This standard was drafted. Shanghai Entry-Exit Inspection and Quarantine Bureau of the People's Republic of China, Guangdong Entry-Exit Inspection and Inspection Epidemic situation. The main drafters of this standard. Chen Danping, Yang Fuchun, Yan Qinghua, Yuan Bo, Xie Yingxin, Li Minhua. The previous versions of the standards replaced by this standard are. ---SN/T 0859-2000. Determination of dehydroacetic acid in export seasonings UV spectrophotometry

1 Scope

This standard specifies the method for determining the content of dehydroacetic acid in export seasonings by ultraviolet spectrophotometry. This standard is applicable to the determination of dehydroacetic acid content in export soy sauce (soy sauce soy sauce, soy sauce soy sauce), vinegar, oyster sauce, barbecue sauce and sauce.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply 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 Determination method

3.1 Principle of the method The dehydroacetic acid in the sample is subjected to steam distillation and organic solvent extraction under acidic conditions, and then irradiated with ultraviolet spectrophotometer at 308 nm. The absorbance was measured in the strength and compared with the standard. 3.2 Reagents and materials Unless otherwise specified, the reagents used in this method are of analytical grade. The water is the third grade water specified in GB/T 6682. 3.2.1 15% (mass concentration) tartaric acid solution. Weigh 15g of tartaric acid, add water to dissolve to 100mL. 3.2.2 Sodium chloride. 3.2.3 Silicone resin. liquid, industrial grade, used for defoaming. 3.2.4 Hydrochloric acid (ρ=1.19g/mL). 3.2.5 Hydrochloric acid solution (19, volume ratio). 10 mL of hydrochloric acid was slowly added to 90 mL of water. 3.2.6 Ether. 3.2.7 Sodium bicarbonate. 3.2.8 1% (mass concentration) sodium bicarbonate solution. 1 g of sodium hydrogencarbonate was weighed and dissolved in water to a volume of 100 mL. 3.2.9 2mol/L sodium chloride solution. Weigh 11.7g of sodium chloride and dissolve it to 100mL with water. 3.2.10 2mol/L hydrochloric acid solution. Take 16.7mL hydrochloric acid and add water to 100mL. 3.2.11 Hydrochloric acid-sodium chloride solution. Pipette 2mol/L sodium chloride solution (3.2.9) 50mL and 2mol/L hydrochloric acid solution (3.2.10) 1 mL, after mixing, diluted to.200 mL with water. 3.2.12 anhydrous sodium sulfate. 3.2.13 sodium hydroxide. 3.2.14 0.1mol/L sodium hydroxide solution. Weigh 4g of sodium hydroxide, dissolved in water to a volume of 1L. 3.2.15 Dehydroacetic acid standard solution. accurately weigh 0.1000g dehydroacetic acid standard in 6mL (0.1mol/L) sodium hydroxide solution (3.2.14), dilute to 100 mL with water, ie a standard stock solution with a concentration of 1 mg/mL. Dilute to 20μg/mL with water when using Hydrogen acetic acid standard working fluid.

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