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SN/T 3249.3-2012 English PDF

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SN/T 3249.3-2012: Imitation jewelry and accessory. Part 3: Determination of antimony and mercury content. Atomic fluorescence spectrometric method
Status: Valid
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SN/T 3249.3-2012English189 Add to Cart 3 days [Need to translate] Imitation jewelry and accessory. Part 3: Determination of antimony and mercury content. Atomic fluorescence spectrometric method Valid SN/T 3249.3-2012

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Basic data

Standard ID SN/T 3249.3-2012 (SN/T3249.3-2012)
Description (Translated English) Imitation jewelry and accessory. Part 3: Determination of antimony and mercury content. Atomic fluorescence spectrometric method
Sector / Industry Commodity Inspection Standard (Recommended)
Classification of Chinese Standard Y88
Word Count Estimation 7,748
Date of Issue 2012-12-12
Date of Implementation 2013-07-01
Quoted Standard GB/T 6682; GB/T 22788-2008; SN/T 2046-2008
Regulation (derived from) National Quality Inspection (2012) 777; industry standard filing Notice 2013 No. 4 (No. 160 overall)
Issuing agency(ies) General Administration of Customs
Summary This standard specifies the imitation jewelry alloys, coatings, textiles, leather, polymers and other similar materials, antimony, mercury atomic fluorescence spectrometric method. This standard applies to imitation jewelry alloys, coatings, textiles, lea

SN/T 3249.3-2012: Imitation jewelry and accessory. Part 3: Determination of antimony and mercury content. Atomic fluorescence spectrometric method


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Imitation jewelry and accessory.Part 3. Determination of antimony and mercury content.Atomic fluorescence spectrometric method People's Republic of China Entry-Exit Inspection and Quarantine Standards Determination of antimony, mercury content. imitation jewelry Part 3 Atomic Fluorescence Spectrometry Issued on. 2012-12-12 2013-07-01 implementation People's Republic of China The State Administration of Quality Supervision, Inspection and Quarantine released

Foreword

SN/T 3249 "simulation jewelry" is divided into three parts. --- Part 1. lead, cadmium, barium content - Flame atomic absorption spectrometry; --- Part 2. Determination of the inductance of lead, cadmium, barium, antimony, mercury content coupled plasma atomic emission spectrometry; --- Part 3. antimony, mercury content by atomic fluorescence spectrometry. This section SN/T Section 33249 of. This section drafted in accordance with GB/T 1.1-2009 given rules. Please note that some of the content of this document may involve patents. Release mechanism of the present document does not assume responsibility for the identification of these patents. This section proposed and managed by the National Certification and Accreditation Administration Committee. This section was drafted by. People's Republic of China Guangdong Entry-Exit Inspection and Quarantine Bureau Technology Center. The main drafters of this section. Zhang Zhihui, Zeng Jiaxin, Guoren Hong, Liu Zhuoqin, Wong Mei Yee, Li Cai Jun, Liang Jinling Liang Ying, Tian Yu Cen, Luo Hsiao-yun. Determination of antimony, mercury content. imitation jewelry Part 3 Atomic Fluorescence Spectrometry

1 Scope

SN/T 3249 provisions of this part of the simulation jewelry alloys, coatings, textiles, leather, polymers and other similar materials antimony, mercury Content atomic fluorescence spectrometric method. This section applies to imitation jewelry alloys, coatings, textiles, leather, polymers and other similar materials, antimony, mercury content determination Lower limit of quantification antimony, mercury, respectively 3000μg/kg, 300μg/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. Laboratory use specifications and test methods GB/T 6682 Analysis Determination of GB/T 22788-2008 toy surface coatings of the total lead content SN/T 2046-2008 Plastics and articles thereof measured inductance of lead, mercury, chromium, cadmium, barium, arsenic coupled plasma atomic emission spectrometry Principle 3 Sample pulverized After acid digestion, atomic fluorescence spectrometry, external standard.

4 Reagents

Unless otherwise specified, use only analytical reagent and in line with two water GB/T 6682 regulations. 4.1 nitric acid (ρ = 1.42g/mL). 4.2 hydrochloric acid (ρ = 1.19g/mL). 4.3 tetrafluoroborate (40%). 4.4 Hydrogen peroxide (ρ = 1.10g/mL). 4.5 10% -5% ascorbic acid thiourea solution. Weigh 10g of thiourea and 5g ascorbic acid, dissolved in 100mL of water. Active Now equipped. 4.6 solution of potassium borohydride (10g/L). Weigh 2.5g of potassium hydroxide dissolved in 100mL of water, then add 5.0g potassium borohydride (KBH4) Continue shaking dissolved, diluted with water to 500mL, if turbidity is filtered use. Using now. 4.7 potassium dichromate solution (10g/L). 4.8 Antimony standard solution (100μg/mL). the use of certified reference materials. 4.9 mercury standard solution (1000μg/mL). the use of certified reference materials. 4.10 antimony, mercury mixed standard stock solution. Pipette 1.0mL antimony standard solution of mercury standard solution (4.8) and 0.01mL of (4.9) in 100mL flask was added 2.0mL of hydrochloric acid (4.2), add 1.0mL potassium dichromate solution (4.7), diluted with water to the mark. That Solution of antimony, mercury concentrations were 1000μg/L, 100μg/L.

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