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SN/T 4590-2016 English PDF

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SN/T 4590-2016: Determination of sodium pyrophosphate, sodium tripolyphosphate and sodium trimetaphosphate in aquatic products for export - Ion chromatography
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SN/T 4590-2016English139 Add to Cart 3 days [Need to translate] Determination of sodium pyrophosphate, sodium tripolyphosphate and sodium trimetaphosphate in aquatic products for export - Ion chromatography Valid SN/T 4590-2016

PDF similar to SN/T 4590-2016


Standard similar to SN/T 4590-2016

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Basic data

Standard ID SN/T 4590-2016 (SN/T4590-2016)
Description (Translated English) Determination of sodium pyrophosphate, sodium tripolyphosphate and sodium trimetaphosphate in aquatic products for export - Ion chromatography
Sector / Industry Commodity Inspection Standard (Recommended)
Classification of Chinese Standard X20
Word Count Estimation 6,625
Date of Issue 2016-08-23
Date of Implementation 2017-03-01
Regulation (derived from) State-Quality-Inspection-Certification (2016)438
Issuing agency(ies) General Administration of Customs

SN/T 4590-2016: Determination of sodium pyrophosphate, sodium tripolyphosphate and sodium trimetaphosphate in aquatic products for export - Ion chromatography


---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 sodium pyrophosphate, sodium tripolyphosphate and sodium trimetaphosphate in aquatic products for export-Ion chromatography People's Republic of China Exit Inspection and Quarantine standards Export aquatic products pyrophosphate, tripolyphosphate, Determination of trimetaphosphate content - Ion chromatography Determinationofsodiumpyrophosphate, sodiumtripolyphosphateandsodium 2016-08-23 released 2017-03-01 Implementation People's Republic of China General Administration of Quality Supervision, Inspection and Quarantine released Exit Inspection and Quarantine of People's Republic of China Industry Standard Export aquatic products pyrophosphate, tripolyphosphate, Determination of trimetaphosphate content - Ion chromatography China Standard Press First edition in October.2017

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard is proposed and managed by the National Certification and Accreditation Administration Committee. This standard was drafted unit. Exit Inspection and Quarantine of People's Republic of China, Exit Inspection and Quarantine of the People's Republic of China Bureau, Qingdao City Product Quality Supervision and Inspection, Qingdao Sheng Han chromatography Technology Co., Ltd., Qingdao Purin Instrument Co., Ltd. The main drafters of this standard Cui He Chen Xiaomei Liu Jingjing Zhang Xiaowen Wang Jun Wang Manxia Zhang Huizhen Lu Peng Mao Xu Bin, Su Kwong Kun. Export aquatic products pyrophosphate, tripolyphosphate, Determination of trimetaphosphate content - Ion chromatography

1 Scope

This standard specifies the aquatic products pyrophosphate, tripolyphosphate, trimetaphosphate ion chromatography method. This standard applies to fish, shrimp, scallops, surimi products pyrophosphate, tripolyphosphate, trimetaphosphate determination.

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 principle

The sample was inactivated by boiling water after ultrasonic extraction, ion chromatography conductivity detector detection, retention time qualitative, external standard method.

4 Reagents and materials

Water used should be consistent with a water GB/T 6682 provisions. 4.1 Sodium hydroxide. Excellent grade pure. 4.2 sodium pyrophosphate (Na4O7P2 · 10H2O) purity of not less than 99%. Sodium tripolyphosphate (Na5O10P3) purity of not less than 85%. 4.4 Sodium trimetaphosphate [(NaPO3) 3] Purity of not less than 95%. 4.5 1mol/L sodium hydroxide solution Weigh 4.0g sodium hydroxide (4.1) dissolved in water, diluted with water to 100mL. 4.6 100mmol/L sodium hydroxide solution Weigh 100.0g sodium hydroxide (4.1), add water to 100mL, mix and let stand at room temperature Saturated sodium hydroxide solution (20mol/L); Pipette 0.5mL saturated sodium hydroxide solution, diluted with water to 1000mL. Can also be used OH-type automatic eluent generator preparation. 4.7 sodium pyrophosphate standard stock solution [c (Na4P2O7) = 1mg/mL] Accurately weigh 0.1694g sodium pyrophosphate (4.2), dissolve in appropriate amount Water, water volume to 100mL. Preserved in the dark at 4 ℃, valid for 6 months. 4.8 sodium tripolyphosphate standard stock solution [c (Na5P3O10) = 1mg/mL] accurately weighed 0.1176g 115 ℃ drying to constant weight Sodium tripolyphosphate (4.3), dissolved in water, the volume of water to 100mL. Preserved in the dark at 4 ℃, valid for 6 months. 4.9 sodium metaphosphate standard stock {c [(NaPO3) 3] = 1mg/L} accurately weighed 0.1053g 115 ℃ drying to constant weight Sodium trimetaphosphate (4.4), dissolved in water, the volume of water to 100mL. Preserved in the dark at 4 ℃, valid for 6 months. 4.10 mixed standard intermediate solution respectively accurately remove the standard solution (4.7,4.8 and 4.9) of each 12.00mL, 16.00mL, 20.00mL In a 100mL volumetric flask, add water and dilute to volume to 100mL. 1mL This solution contains sodium pyrophosphate 120μg, sodium tripolyphosphate 160 μg, sodium trimetaphosphate.200 μg. Preserved in the dark at 4 ℃, valid for 6 months. 4.11 mixed standard working solution. According to the need to draw a certain amount of mixed standard intermediate solution (4.10) diluted with water to the appropriate concentration of standard workers For liquid, preparation before use. 4.12 nylon filter .0.22μm.

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