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SN/T 4022-2014 (SNT 4022-2014)

SN/T 4022-2014_English: PDF (SNT4022-2014)
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SN/T 4022-2014English199 Add to Cart 3 days Import and export textiles. Determination of trace lead Nano-titanium dioxide enrichment-ICP-AES method SN/T 4022-2014 Valid SN/T 4022-2014

BASIC DATA
Standard ID SN/T 4022-2014 (SN/T4022-2014)
Description (Translated English) Import and export textiles. Determination of trace lead Nano-titanium dioxide enrichment-ICP-AES method
Sector / Industry Commodity Inspection Standard (Recommended)
Classification of Chinese Standard W55
Classification of International Standard 59.080
Word Count Estimation 8,833
Date of Issue 2014/4/9
Date of Implementation 2014/11/1
Quoted Standard GB/T 3922; GB/T 6682
Drafting Organization ?PRC Beijing Exit-Entry Inspection Quarantine Bureau
Administrative Organization ?CNCA
Regulation (derived from) State inspection certification (2014) 210
Proposing organization Certification and Accreditation Administration of the People's Republic of China
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
Summary This standard specifies the nano textiles extractable heavy metals lead (Pb) content of titanium dioxide enrichment - inductively coupled plasma emission spectrometry method. This standard applies to the determination of heavy metals in textiles extractab

SN/T 4022-2014
Import and export textiles. Determination of trace lead Nano-titanium dioxide enrichment-ICP-AES method
People's Republic of China Entry-Exit Inspection and Quarantine Standards
Determination of trace lead in import and export of textiles
Nano-titanium dioxide enrichment - Inductively Coupled
Plasma Atomic Emission Spectrometry
Issued on. 2014-04-09
2014-11-01 implementation
People's Republic of China
The State Administration of Quality Supervision, Inspection and Quarantine released
Foreword
This standard is prepared in accordance with GB/T 1.1-2009 given rules.
This standard is proposed and managed by the National Certification and Accreditation Administration Committee.
This standard was drafted. People's Republic of China Beijing Entry-Exit Inspection and Quarantine Bureau, Intertek (Tianjin) Quality Technology Services Limited.
The main drafters of this standard. Tang Xiaoping, Liu Yang, Wang Jing, Han Jing, Wang Qiang, Cui Shasha, seats and then Juan, Wang Haiqi, Yu Tao, its seedlings come, Zhang Lei,
Zhou Zhengyu, Zhu Linping, Yanlan Zhen, Hu Yajie, Yin Wang Chao.
Determination of trace lead in import and export of textiles
Nano-titanium dioxide enrichment - Inductively Coupled
Plasma Atomic Emission Spectrometry
Warning. Use of this standard shall have a person experiences regular laboratory work. This standard does not point out all possible security issues.
Users have the responsibility to take appropriate safety and health practices and to ensure compliance with the conditions relevant national regulations.
1 Scope
This standard specifies the textile extractable heavy metals lead (Pb) content of titanium dioxide enrichment - inductively coupled plasma optical emission
Spectroscopy methods.
This standard applies to textile extractable heavy metals lead (Pb) determination of the content range. 0.1mg/kg ~ 2mg/kg.
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.
GB/T 3922 Textiles Tests for color fastness color fastness to perspiration
Laboratory use specifications and test methods GB/T 6682 Analysis
Principle 3
After extraction with acidic sweat sample was added titanium dioxide in the extract with a small amount of hydrochloric acid adsorbed on nano-titanium dioxide Lead
Elution by inductively coupled plasma emission spectrometer eluent lead content.
4 Reagents and materials
Unless otherwise specified, use only pure reagents superior grade and in line with two water GB/T 6682 regulations.
4.1 of concentrated nitric acid. mass fraction of 65% to 68%.
4.2 of concentrated hydrochloric acid. mass fraction of 36% to 38% electronic grade.
4.3 nano-titanium dioxide (TiO2). white powder, average particle size ≤25nm, specific surface area of 60m2/g ~ 75m2/g, containing titanium dioxide
The amount of 99.5%. Approach. nano TiO2 placed in 100mL beaker, add 30% nitric acid solution (4.4), and the solution of nitric acid have not seen
Nano TiO2, soak 30min, stirring occasionally, with ultrapure water to neutral, filtration. After repeat once, dried at 100 ℃, avoid
Light save and set aside.
4.4 30% nitric acid solution. Measure 300mL of concentrated nitric acid (4.1), and slowly poured into 700mL water and stirred for mixing.
4.5 10% nitric acid solution. Measure 100mL of concentrated nitric acid (4.1), and slowly poured into 900mL of water, stirring to mix.
4.6 4% hydrochloric acid solution. Measure 40mL of concentrated hydrochloric acid (4.2), and slowly poured into 960mL water and stirred for mixing.
4.7 acidic sweat. preparing an acidic sweat under GB/T 3922, the test solution should be using now.
4.8 Lead (Pb) standard stock solution (100μg/mL). You can use certified reference materials or formulated as follows.
Weigh 0.160g pin lead acid [Pb (NO3) 2], dissolved 10mL10% nitric acid solution (4.5) and transferred to 1000mL volumetric flask,