GB/T 38339-2019 in English

VALID

Determination of phosphorus content in fluorescent brightener products

Issued on:2019-12-31
Implemented on:2020-11-01
File Format:PDF
Delivery:Via email within 1~3 business days

Price(USD)： $100.00
$97.00

Standard No:	GB/T 38339-2019
Document status:	VALID
Title in English:	Determination of phosphorus content in fluorescent brightener products
Title in Chinese:	荧光增白剂产品中磷含量的测定
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 1~3 business days
Issued on:	2019-12-31
Implemented on:	2020-11-01
ICS Classification:	71.100.01-Products of the chemical industry in general
Chinese Classification:	G55-Basic standards and general methods for dye
Professional Classification:	GB-National Standard
Related Topics:	Fluorescent whitening agent fluorescent products Phosphorescence fluorescent products Fluorescence Quantification Absolute Quantification Fluorescence Quantitative Multiplex Phosphorescence Fluorescence timed quantification Equipment for Measuring Fluorescence Fluorometer Products Measuring Phosphorus in Water fluorescent and phosphorescent Fluorescent German Fluorescence quantitative r2 generation of fluorescence Fluorescent production for lithium content testingfluorescent Fluorescence and Phosphorescence Solid State Fluorescence Measurements Fluorescence and phosphorescence are both Determination of phosphorus content fluorescence and phosphorescence Fluorescent Phosphorus Phosphorescence and Fluorescence Fluorescence and phosphorescence6 isothermal fluorescence quantification Phosphorescence and Fluorescence Fluorescence series products Fluorescent Quantitative Reagent Generation of Fluorescent Peaks Phosphorescence and Fluorescence Phosphorescence Domestic Fluorescence Quantitative fluorescent and phosphorescent Measurement of autofluorescence Solid State Fluorescence Measurements brightener fluorescent or phosphorescent Phosphorus content in wastewater Fluorescence and Phosphorescence Fluorescence measurement without peaks Fluorescent production Fluorescence and phosphorescence somewhat Ratio of Fluorescence to Phosphorescence blank test Fluorescence quantitative u6 for oil contentfluorescent glow in the dark phosphorescence Fluorescence 6 and Phosphorescence Zhongwei Optoelectronics Products for chlorine contentfluorescence Fluorescence content Determination of oil in water Fluorescence How to quantify fluorescence Fluorescent Molecular Products Molecular Product Fluorescence Phosphorus content Film plasticizer content Fluorescent agent for plastic products Optical Measurement Products Fluorescence quantitative and semi-quantitative Total phosphorus content in the agent Fluorescence content Fluorescence quantitative products Fluorescence assay micro sample cell Fluorescence phosphorometer Phosphorescence and Fluorescence Determination of Phosphorus Content in Feed Phosphorus fluorescence Fluorescence phosphorometer Fluorescence Phosphorescence Fluorescence Absolute Fluorescence Quantitative DNA Quantification Food fluorescence quantification Incremental testing vs. non-incremental Fluorescein content fluorescent version Fluorescein content Fluorescent Machine Phosphorescence produce fluorescence and Determination of Cadmium Content in Solution by Fluorescence Method Fluorescence is usually measured at Wavelength Fluorescent Phosphorus Content Premium Fluorescence Quantitation generation of fluorescence? GBT38339 Phosphorus content in green water treatment agent Fluorescence quantitative data graphpad plotting Atomic fluorescence phosphorus measurement Measure fluorescence energy Product normalized content Fluorescent agent content is safe Minimum cDNA amount for fluorescence quantification Poor reproducibility of fluorescence quantification Fluorescent whitening agent testing standards and basis National standards for organic phosphorus content of agricultural products Fluorescence Quantitative Industry German fluorescent agent content is safe Food fluorescent whitening agent limits Fluorescent whitening agent test method Fluorescent agent dosage Fabric fluorescent agent detection Fluorescence quantum yield Limited amount of fluorescent agent for clothing whitening Determination method of phosphorus content in food Fluorescence detector drug quality Thallium content in aquatic products Fluorescent agent content

《GB/T 38339-2019荧光增白剂产品中磷含量的测定》由TC134（全国染料标准化技术委员会）归口，主管部门为中国石油和化学工业联合会。

Introduction

Interpretation of the National Standard of the People's Republic of China GB/T 38339—2019

1. Background of the Standard

As an important auxiliary agent in the textile, washing and papermaking industries, the quality control of fluorescent brighteners is of vital importance. Phosphorus content is an important indicator to measure its performance and safety. The formulation of this standard aims to unify the test methods and ensure the accuracy and comparability of data.

2. Comparison of standard frameworks

Content dimension	Wet digestion	Microwave digestion	Phosphomolybdenum blue method	Phosphomolybdenum yellow method
Scope of application	Widely applicable, suitable for complex samples	Efficient and fast, suitable for small batch samples	High sensitivity, suitable for low phosphorus content detection	Applicable to samples with high phosphorus content
Operation complexity	High	Medium	High	Low
Detection sensitivity	General	High	High	Low

3. Analysis of technology evolution

This standard combines traditional wet digestion with modern microwave digestion technology, reflecting the innovative development of detection methods. The application of phosphomolybdenum blue method and phosphomolybdenum yellow method demonstrates the advantages of chemical colorimetry in trace analysis.

4. Implementation suggestions

4.1 Method selection

Samples with low phosphorus content:The phosphomolybdenum blue method is recommended because of its high sensitivity and simple operation.
Samples with high phosphorus content:The phosphomolybdenum yellow method is preferred, which is suitable for the detection of phosphorus content above 500 mg/kg.
Batch sample processing: It is recommended to use microwave digestion technology to improve efficiency.

4.2 Personnel training

Operators should receive systematic training, focusing on the correct use of instruments and equipment and the preparation of standard solutions. It is recommended to conduct internal quality control drills regularly to ensure data reliability.

4.3 Quality control

Blank test: A blank test should be performed simultaneously on each batch of samples to evaluate the accuracy of the experiment.
Repeatability test: The difference between two parallel measurement results should be ≤2 mg/kg or not more than 10% of the average value.
Instrument calibration: Regularly calibrate the wavelength of the spectrophotometer to ensure measurement accuracy.

More samples: QC/T 942-2021 GB 18306-2015 YD/T 3934-2021

Sample only — not a preview of GB/T 38339-2019

Loading PDF document...

Error loading PDF. Please make sure the file is valid and try again.

We also recommend

GB/T 1866-2012 in English

Neutral dyes—Determination of dyeing shade and relative strength
2012-06-29
GB/T 3899.1-2007 in English

Commercial dyestuffs for textile—The principle of nomenclature
1986-11-24
GB/T 1637-2006 in English

Solubilised vat dyes - Determination of shade and relative strength
2006-08-01
GB/T 9337-2009 in English

Disperse dyestuffs—Determination of dye-uptake at high temperature dyeing
2009-06-02
GB/T 25811-2010 in English

Standard bleached polyester fabric used for dyeing test
2010-12-23
GB/T 12680-2008 in English

Alcohol soluble dyes - Determination for general properties of application
2008-05-15
GB/T 41071-2021 in English

Determination of polycyclic aromatic hydrocarbons in dye products
2021-12-31
GB/T 21882-2008 in English

Liquid dyes - Determination of the viscosity
2008-05-15
GB/T 27596-2011 in English

Dyestuffs—Determination of particle fineness—Microscope method
2011-12-05
GB/T 4465-2012 in English

Basic dyes—Determination of shade and relative strength
2012-06-29