GB/T 37363.4-2020 English PDF

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GB/T 37363.4-2020: Determination of biocides content of coating materials - Part 4: Determination of carbendazim content
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Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 37363.4-2020	169	Add to Cart	3 days	Determination of biocides content of coating materials - Part 4: Determination of carbendazim content	Valid

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GB/T 37362.1   GB/T 37356   GB/T 37363.2   GB/T 37363.3   GB/T 37361   GB/T 37363.1   

Basic data

Standard ID: GB/T 37363.4-2020 (GB/T37363.4-2020)
Description (Translated English): Determination of biocides content of coating materials - Part 4: Determination of carbendazim content
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: G50
Classification of International Standard: 87.040
Word Count Estimation: 9,933
Date of Issue: 2020-11-19
Date of Implementation: 2021-10-01
Regulation (derived from): National Standard Announcement No. 26 of 2020
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 37363.4-2020: Determination of biocides content of coating materials - Part 4: Determination of carbendazim content

---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 biocides content of coating materials-Part 4.Determination of carbendazim content ICS 87.040 G50 National Standards of People's Republic of China Determination of Biocide Content in Coatings Part 4.Determination of Carbendazim Content 2020-11-19 released 2021-10-01 implementation State Administration for Market Regulation Issued by the National Standardization Management Committee

Foreword

GB/T 37363 "Determination of Biocide Content in Coatings" is divided into the following parts. ---Part 1.Determination of isothiazolinone content; ---Part 2.Determination of Diuron content; ---Part 3.Determination of triclosan content; ---Part 4.Determination of carbendazim content; This part is Part 4 of GB/T 37363. This section was drafted in accordance with the rules given in GB/T 1.1-2009. This part was proposed by the China Petroleum and Chemical Industry Federation. This part is under the jurisdiction of the National Paint and Pigment Standardization Technical Committee (SAC/TC5). Drafting organizations of this section. CNOOC Changzhou Paint Chemical Research Institute Co., Ltd., Changzhou Guanghui New Materials Research Institute Co., Ltd., Nippon Paint Materials (China) Co., Ltd., Sankeshu Coating Co., Ltd., Shenzhen Guangtian High-tech New Material Co., Ltd., Qingdao Xingguo Coating Co., Ltd., Qingdao Vocational and Technical College. The main drafters of this section. Li Jinying, Li Guangdong, Zhao Shaohong, Cai Xuena, Dai Jun, Wang Yaneng, Xu Xinxiang, Liu Bochen, Liang Lihua, Zhao Meifa and Ni Weiliang. Determination of Biocide Content in Coatings Part 4.Determination of Carbendazim Content Warning---The personnel using this section should have practical experience in formal laboratory work. This section does not point out all possible security issues. The user is responsible for taking appropriate safety and health measures and ensuring compliance with the conditions stipulated by relevant national laws and regulations.

1 Scope

This part of GB/T 37363 specifies the use of liquid chromatography and liquid chromatography-mass spectrometry/mass spectrometry to determine carbendazim in coatings [N-(2-Benzimidazolyl)-methyl carbamate, CAS number. 10605-21-7] Principles of content, reagents and materials, equipment, samples, test Test procedures, test data processing, detection limit, precision and test report. This section applies to the determination of carbendazim content in coatings. The determination of the content of carbendazim in the coating film and raw materials for coatings can also refer to this section.

2 Normative references

The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this article Pieces. For undated references, the latest version (including all amendments) applies to this document. GB/T 3186 Sampling of paints, varnishes and raw materials for paints and varnishes GB/T 6682-2008 Analysis laboratory water specifications and test methods GB/T 12806-2011 Laboratory glassware single mark volumetric flask GB/T 12807-1991 Laboratory glass measuring pipette GB/T 12808-2015 Laboratory glass instrument single mark pipette

3 Principle

Liquid chromatography. Use methanol as the extraction solvent to extract carbendazim in the sample by a combination of ultrasonic extraction and centrifugal separation. Detected by LC, qualitatively by retention time, and quantified by external standard method. Liquid chromatography-mass spectrometry/mass spectrometry. use methanol as the extraction solvent, and use a combination of ultrasonic extraction and centrifugal separation to extract the sample Carbendazim. Detected by liquid chromatography-mass spectrometry/mass spectrometry (LC-MS/MS), qualitatively determined by retention time and selected ion, and quantified by external standard method. Note 1.Other confirmed suitable solvents can also be selected as extraction solvents. Note 2.Liquid chromatography in this section includes high performance liquid chromatography, ultra high performance liquid chromatography, etc.

4 Reagents and materials

Unless otherwise specified, only reagents of analytical purity and above are used in the analysis. 4.1 Methanol. chromatographically pure. 4.2 Ammonium acetate. chromatographically pure. 4.3 Carbendazim. The mass fraction is not less than 99%, or the purity is known. 4.4 Microporous membrane. organic phase, pore size 0.45μm (for LC); pore size 0.22μm (for LC-MS/MS). 4.5 Stainless steel metal sieve. aperture 0.55mm. ......

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