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GB/T 44365-2024: Determination of 6-methylcoumarin, dihydrocoumarin, 7-methylcoumarin, 7-methoxycoumarin, 7-ethoxy-4-methylcoumarin in toothpastes - High performance liquid chromatography
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Determination of 6-methylcoumarin, dihydrocoumarin, 7-methylcoumarin, 7-methoxycoumarin, 7-ethoxy-4-methylcoumarin in toothpastes - High performance liquid chromatography
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GB/T 44365-2024
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PDF similar to GB/T 44365-2024
Basic data | Standard ID | GB/T 44365-2024 (GB/T44365-2024) | | Description (Translated English) | Determination of 6-methylcoumarin, dihydrocoumarin, 7-methylcoumarin, 7-methoxycoumarin, 7-ethoxy-4-methylcoumarin in toothpastes - High performance liquid chromatography | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | Y43 | | Word Count Estimation | 20,221 | | Date of Issue | 2024-08-23 | | Date of Implementation | 2024-08-23 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 44365-2024: Determination of 6-methylcoumarin, dihydrocoumarin, 7-methylcoumarin, 7-methoxycoumarin, 7-ethoxy-4-methylcoumarin in toothpastes - High performance liquid chromatography
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Determination of 6-methylcoumarin, dihydrocoumarin, 7-methylcoumarin, 7-methoxycoumarin, 7-ethoxy-4-methylcoumarin in toothpastes - High performance liquid chromatography
6﹘Methylcoumarin, dihydrocoumarin,
7﹘Methylcoumarin, 7﹘Methoxycoumarin,
Determination of 7﹘ethoxy﹘4﹘methylcoumarin
High performance liquid chromatography
Determination of 6﹘methylcoumarin, dihydrocoumarin, 7﹘methylcoumarin,
7﹘methoxycoumarin, 7﹘ethoxy﹘4﹘methylcoumarin in toothpastes-
High performance liquid chromatography
ICS 71.100.40
CCS Y 43
National Standard of the People's Republic of China
Published on August 23, 2024, implemented on March 1, 2025
State Administration for Market Regulation
The National Standardization Administration issued
Table of Contents
Preface ... Ⅲ
1 Scope ... 1
2 Normative references ... 1
3 Terms and Definitions ... 1
4 Principle ... 1
5 Reagents and Materials ... 1
6 Instruments and Equipment ... 2
7 Test steps ... 2
7.1 Preparation of sample solution 2
7.2 Determination 2
7.3 Standard working curve ... 3
7.4 Sample measurement ... 3
7.5 Blank test ... 3
8 Result calculation ... 3
9 Recovery rate ... 4
10 Precision ... 4
11 Limit of Detection and Limit of Quantitation ... 4
Appendix A (Informative) Information on Standard Substances/Standard Samples ... 5
Appendix B (Informative) Chromatograms and spectra of 5 coumarin standard solutions ... 6
Appendix C (Informative) Confirmatory Test ... 10
C.1 Liquid Chromatography Reference Working Conditions 10
C.2 Mass spectrometry reference working conditions 10
C.3 Qualitative Testing 11
Foreword
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents"
Drafting is required.
Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents.
This document was proposed by China Light Industry Federation.
This document is under the jurisdiction of the National Technical Committee for Standardization of Oral Care Products (SAC/TC 492).
This document was drafted by. Suzhou Shipu Testing Technology Co., Ltd., Suzhou Quality Inspection Science Research Institute, Sukoshipu Biotechnology (Suzhou)
Co., Ltd., Suzhou Kernairui Testing Technology Co., Ltd., Guangzhou Shuke Industrial Co., Ltd., Guangzhou Quality Supervision and Inspection Institute, Heilongjiang
Jiangxi Light Industry Science Research Institute, Jiangxi Chengzhi Daily Chemical Co., Ltd., Infinitus (China) Co., Ltd., Liuzhou Liangmianzhen Co., Ltd.,
Chongqing Dengkang Oral Care Products Co., Ltd., Hebei Provincial Food Inspection Institute, Jiangsu Provincial Product Quality Supervision and Inspection Institute, Jiangsu
Provincial Food and Drug Supervision and Inspection Institute, Perfect (Guangdong) Daily Necessities Co., Ltd., Tsinghua University, Hainan University, Shenzhen University,
Suzhou University, Changzhou University, Changzhou Food and Drug Fiber Quality Supervision and Inspection Center, Suzhou Drug Inspection and Testing Research Center, Shandong Hua
VEGETARIAN HEALTH CARE PRODUCTS LIMITED.
The main drafters of this document are. Ye Jiarong, Lu Jian, Zhang Yan, Fang Fang, Li Jianxiang, Zheng Wei, Ye Zhuhong, Zhao Shanshan, Chen Minshan,
Xu Haiyan, Gao Yan, Yang Weihao, Chen Xin, Xiao Junfang, Qin Tianyi, Liu Bin, Jie Li, Wu Yuluan, Dai Dan, Zhu Dandan, Wang Yi,
Li Peisi, Zhang Yingyang, Hou Xiangchang, Song Shuwen, Nie Yanyan, Lu Yinghong, Jiang Lei, Gao Long, Gu Pan, Liu Qunlin, Gao Hongying, Zhu Yirong,
Tang Wenjin.
6﹘Methylcoumarin, dihydrocoumarin,
7﹘Methylcoumarin, 7﹘Methoxycoumarin,
Determination of 7﹘ethoxy﹘4﹘methylcoumarin
High performance liquid chromatography
WARNING - Personnel using this document should have practical experience in formal laboratory work. This document does not purport to address all possible safety issues.
The user is responsible for taking appropriate safety and health measures and ensuring that the conditions are in compliance with relevant national regulations.
1 Scope
This document describes 6﹘methylcoumarin, dihydrocoumarin, 7﹘methylcoumarin, 7﹘methoxycoumarin, 7﹘ethoxy﹘4﹘methyl
Principle, reagents and materials, instruments and equipment, experimental steps, result calculation, recovery rate and precision of high performance liquid chromatography determination of methylcoumarin
Degree, allowable difference, etc.
This document applies to 6﹘methylcoumarin, dihydrocoumarin, 7﹘methylcoumarin, 7﹘methoxycoumarin, 7﹘ethoxy﹘4﹘methyl
Determination of methylcoumarins.
2 Normative references
The contents of the following documents constitute the essential clauses of this document through normative references in this document.
For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies.
in this document.
GB/T 6682 Specifications and test methods for water used in analytical laboratories
3 Terms and definitions
There are no terms or definitions that require definition in this document.
4 Principle
6﹘ methylcoumarin, dihydrocoumarin, 7﹘ methylcoumarin, 7﹘ methoxycoumarin, 7﹘ ethoxy﹘ 4﹘ methylcoumarin in toothpaste
After alcohol extraction, high performance liquid chromatography with diode array detector was used for detection, and the qualitative analysis was based on retention time and spectrum, and the quantitative analysis was based on external standard method.
5 Reagents and Materials
5.1 Unless otherwise specified, all reagents used are of chromatographic grade and water is first-grade water that meets the requirements of GB/T 6682.
5.2 Methanol.
5.3 Acetonitrile.
5.4 Phosphoric acid. analytical grade.
5.5 Formic acid.
5.6 0.1% (volume fraction) phosphoric acid solution. Take 1 mL of phosphoric acid (5.4), add 999 mL of water (5.1), and mix well.
5.7 20% (volume fraction) methanol solution. Accurately measure 20 mL of methanol (5.2), add water (5.1) to 100 mL, and mix well.
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