GB/T 41331-2022 in English

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Determination of arsenic , mercury , antimony and selenium in dye products—Atomic fluorescence spectrometry

Issued on:2022-03-09
Implemented on:2022-10-01
File Format:PDF
Delivery:Via email within 1~3 business days

Price(USD)： $120.00
$117.00

Standard No:	GB/T 41331-2022
Document status:	VALID
Title in English:	Determination of arsenic , mercury , antimony and selenium in dye products—Atomic fluorescence spectrometry
Title in Chinese:	染料产品中砷、汞、锑、硒的测定原子荧光光谱法
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 1~3 business days
Issued on:	2022-03-09
Implemented on:	2022-10-01
ICS Classification:	71.100.01-Products of the chemical industry in general
Professional Classification:	GB-National Standard
Related Keywords:	dye products atomic fluorescence spectrometry introduction standard background dye products atomic fluorescence spectrometry dye detection method system dye detection
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《GB/T 41331-2022染料产品中砷、汞、锑、硒的测定原子荧光光谱法》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

Standard Background and Significance

With the tightening of REACH regulations and ecological textile standards, the control of harmful elements such as arsenic, mercury, antimony, and selenium in dye products has become an industry focus. The release of this standard has improved my country's dye detection method system and filled the gap in the standardization of the application of atomic fluorescence spectrometry in the field of dye detection.

Core Detection Principle Construction

When using atomic fluorescence spectrometer for detection, the characteristic spectrum intensity of a specific element is linearly correlated with the concentration. The key process is as follows:

Element	Excitation Light Source	Detection Limit(μg/L)	Working Range(mg/L)
As	As Hollow Cathode Lamp	0.05	0-0.01
Hg	Hg Hollow Cathode Lamp	0.02
Sb	Sb hollow cathode lamp	0.05	0-0.01
Se	Se hollow cathode lamp	0.05	0-0.01

Key points of method implementation

Comparison of sample pretreatment

Indicators	Microwave digestion method	Wet digestion method
Time consumption	~5h	12~24h
Reagent dosage	Nitric acid dosage reduced by 60%	High acid consumption
Applicability	High boiling point organic matter	Conventional samples

Recommendations for the implementation of the standard

1. It is recommended to use microwave digestion instrument to process complex dye matrices
2. For As and Sb detection, the reaction time of thiourea first acid mixture must be ≥2 hours
3. The result should be determined by two parallel samples, with RSD≤10%

More samples: GB 50021-2001(2009) DL/T 368-2010 QC/T 942-2021

Sample only — not a preview of GB/T 41331-2022

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