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GB/T 30798-2014 English PDF

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GB/T 30798-2014: The test method of food detergents -- Determination of fluorescent whitening agent
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Basic data

Standard ID GB/T 30798-2014 (GB/T30798-2014)
Description (Translated English) The test method of food detergents -- Determination of fluorescent whitening agent
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard Y40
Classification of International Standard 71.100.40
Word Count Estimation 6,625
Date of Issue 7/8/2014
Date of Implementation 11/1/2014
Quoted Standard GB/T 6682; HG/T 2609; HG/T 3675; HG/T 3726
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 test method for determination of detergent fluorescent whitening food. This standard applies to food Determination of optical brighteners in detergents, detergent is also suitable for the determination of non-food use of optica

GB/T 30798-2014: The test method of food detergents -- Determination of fluorescent whitening agent


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The test method of food detergents. Determination of fluorescent whitening agent ICS 71.100.40 Y40 National Standards of People's Republic of China Test methods for food use detergent Determination of fluorescent whitening agent whiteningagent Issued on. 2014-07-08 2014-11-01 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 National Light Industry Council. This standard by the national food washed disinfection products Standardization Technical Committee (SAC/TC395) centralized. This standard was drafted. China Daily Chemical Industry Research Institute [National Cleaning Products Quality Supervision and Inspection Center (Taiyuan)], Xi'an opened meters shares Parts Co., surfactants and detergent industry Productivity Promotion Center. The main drafters of this standard. Zheng Yang Zhen, Gao Huan Quan, Wang Kaixiang, Hechun Liang, Chen Yao, the Wu Jie. Test methods for food use detergent Determination of fluorescent whitening agent

1 Scope

This standard specifies the test method for determination of detergent fluorescent whitening food. This standard applies to food Determination of optical brighteners in detergents, detergent is also suitable for the determination of non-food use of optical brighteners.

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. Laboratory use specifications and test methods GB/T 6682 Analysis HG/T 2609 Standard Test dye bleach cotton HG/T 3675 Fluorescent Brightener CXT (CI fluorescent brightener 71) HG/T 3726 Fluorescent Brightener 351 (CI Fluorescent Brightener 351) Principle 3 Fluorescent brightener UV irradiation will fluoresce bright shiny dark can be observed, may determine that it exists.

4 Instrument

4.1 Ultraviolet analytical instruments or ultraviolet light, the wavelength of 365nm, with a reflective protective mask lamp to the irradiation surface distance 100mm ~ 200mm. 4.2 constant temperature water bath. 4.3 darkroom or camera obscura.

5 direct method

5.1 solid samples The sample flat on a clean black background, irradiation with ultraviolet light from a distance of 100mm ~ 200mm in the darkroom or camera obscura, Such as those containing fluorescent whitening agent, the resulting bright luster. 5.2 liquid sample Dope samples were taken or formulated as a 2% aqueous solution in a clean petri dish, a black background in a darkroom or camera obscura with ultraviolet light From 100mm ~ 200mm distance irradiation, such as those containing optical brighteners, then produce a bright sheen. Note 1. The direct method is a fast method, but some natural products will produce fluorescence, it will contain fluorescent brightener sample containing fluorescent whitening agent mistakenly believe, therefore In the case of slightly fluorescent, the limit test should be carried out further confirmation. Note 2. When the decision is not to pay attention to UV exposure to the eyes directly.

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