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GB/T 30919-2014 English PDF

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GB/T 30919-2014: Styrene-butadiene rubber, raw -- Determination of N-nitrosamines content by gas chromatography -- Thermo energy analyzer method
Status: Valid

Standard ID	Contents [version]	USD	STEP2	[PDF] delivered in	Standard Title (Description)	Status	PDF
GB/T 30919-2014	English	229	Add to Cart	3 days [Need to translate]	Styrene-butadiene rubber, raw -- Determination of N-nitrosamines content by gas chromatography -- Thermo energy analyzer method	Valid	GB/T 30919-2014

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Basic data

Standard ID	GB/T 30919-2014 (GB/T30919-2014)
Description (Translated English)	Styrene-butadiene rubber, raw -- Determination of N-nitrosamines content by gas chromatography -- Thermo energy analyzer method
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	G34
Classification of International Standard	83.040
Word Count Estimation	10,178
Date of Issue	7/8/2014
Date of Implementation	12/1/2014
Quoted Standard	GB/T 15340
Regulation (derived from)	2014 National Standards Bulletin No. 18
Issuing agency(ies)	General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary	This standard specifies the use of gas chromatography - thermal energy analyzer (GC-TEA) Determination of styrene - butadiene rubber N- nitroso dimethylamine, N- nitroso methyl ethyl amine, N- nitroso diethylamine, N- nitroso two propanamine, N- nitroso-

GB/T 30919-2014: Styrene-butadiene rubber, raw -- Determination of N-nitrosamines content by gas chromatography -- Thermo energy analyzer 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.
Styrene-butadiene rubber, raw. Determination of N-nitrosamines content by gas chromatography. Thermo energy analyzer method ICS 83.040 G34 National Standards of People's Republic of China Styrene - Butadiene Rubbers Determination of N- nitrosamine compound Gas chromatography - Thermal Analysis Styrene-butadienerubber, raw-DeterminationofN-nitrosaminescontent Issued on. 2014-07-08 2014-12-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This standard was drafted in accordance with GB/T 1.1-2009 given rules. The standard proposed by China Petroleum and Chemical Corporation. This standard by the National Standardization Technical Committee rubber and rubber products, synthetic rubber Technical Committee (SAC/TC35/SC6) Centralized. This standard was drafted. China National Petroleum Corporation Research Institute of Petroleum. The main drafters of this standard. Xue Huifeng, Gong Guangbi, Gengzhan Jie, Qin Peng, Fanguo Ning, Sun Lijun, Zhaiyue Qin, Wu Yi, Wang Fang, high Dongmei, Wang Xueli. Styrene - Butadiene Rubbers Determination of N- nitrosamine compound Gas chromatography - Thermal Analysis Warning. Use of this standard should be familiar with normal laboratory practice. This standard does not purport relates to the use of this standard may occur All security issues. Develop appropriate safety and health system and to ensure compliance with national regulations is the responsibility of the user. Some analytical methods specified in this standard may involve the use of a substance or substances or generation of waste generated, which may cause local Environmental hazards. After the test operation should refer to the appropriate security documents for processing.

1 Scope

This standard specifies the use of gas chromatography - thermal energy analyzer (GC-TEA) Determination of styrene - butadiene rubber N- nitroso dimethylamine, N- nitroso methylethyl amine, N- nitroso diethylamine, N- nitroso two propanamine, N- nitroso-dibutylamine, N- nitroso piperidine, N- nitroso pyrazole Pyrrolidine, N- nitroso morpholine, N- nitroso 10 kinds of methods amine content N- nitroso-methylaniline, N- nitroso-diethylaniline and the like. This standard applies to non-oil-extended emulsion styrene - butadiene rubber raw.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein Member. For undated references, the latest edition (including any amendments) applies to this document. GB/T 15340 natural, synthetic rubber raw sampling and sample preparation method (GB/T 15340-2008, ISO 1795.2000, IDT)

3 Method Summary

The sample was pulverized, extracted with a solvent in the rubber compound N- nitrosamine, removing interferences, the solution was concentrated by GC-TEA Measured.

4 Reagents and materials

Unless otherwise indicated in the analysis using only the confirmation of analytical grade or higher purity reagents and distilled water or equivalent purity. 4.1 methanol. 4.2 dichloromethane. 4.3 nitrosamines standard substance. purity > 98%, or the exact concentration of the standard solution. 4.4 NaCl. mass fraction of 2%. Methanol 4.5 - Sodium Chloride Solution. methanol solution of sodium chloride (4.4) in a mixed solution (volume ratio 2.3). 4.6 standard stock solution A. Take about 100mL of methanol was added to the brown 500mL volumetric flask, then add standard substance ten kinds of nitrosamines (Each about 50mg, accurate to 0.1mg), diluted with methanol to the mark, shake seal below 5 ℃ in the dark environment preservation, valid In Standards certificate shall prevail. It can also be directly prepared by dilution of standard solution accurate concentration. A standard solution of each of N-nitrosamines Concentration of approximately 100μg/mL.

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