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Determination of flurine in import copper matte or sintered copper material by ion. Selective electrode
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Basic data
| Standard ID | SN/T 3469.2-2013 (SN/T3469.2-2013) |
| Description (Translated English) | Determination of flurine in import copper matte or sintered copper material by ion. Selective electrode |
| Sector / Industry | Commodity Inspection Standard (Recommended) |
| Classification of Chinese Standard | H10 |
| Classification of International Standard | 77.040.30 |
| Word Count Estimation | 8,834 |
| Quoted Standard | GB/T 6682-2008 |
| Regulation (derived from) | AQSIQ notification issued in 2013 on the first batch of 179 entry-exit inspection and quarantine of industry standards; industry standard for filing Notice 2013 No. 9 (No. 165 overall) |
| Issuing agency(ies) | General Administration of Customs |
| Summary | This standard specifies the ion selective electrode method for the determination of imported materials copper smelting or sintering method of fluorine content. This standard applies to the determination of imported copper smelting or sintered material of |
SN/T 3469.2-2013: Determination of flurine in import copper matte or sintered copper material by ion. Selective electrode
---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Determination of flurine in import copper matte or sintered copper material by ion. Selective electrode
People's Republic of China Entry-Exit Inspection and Quarantine Standards
Imported crude copper smelting or sintered material in the fluorine content
Determination of ion selective electrode method
Issued on. 2013-03-01
2013-09-16 implementation
People's Republic of China
The State Administration of Quality Supervision, Inspection and Quarantine released
Foreword
This section SN/T Section 23469 of.
This section drafted in accordance with GB/T 1.1-2009 given rules.
This section proposed and managed by the National Certification and Accreditation Administration Committee.
This section was drafted by. People's Republic of China Xinjiang Exit Inspection and Quarantine.
The main drafters of this section. All small shield, hot Zi Wan Qin Ting Liu, birch, Wang Ting Zou Qin.
Imported crude copper smelting or sintered material in the fluorine content
Determination of ion selective electrode method
1 Scope
SN/T 3469 provisions of this part of the ion-selective electrode method for the determination of imported crude copper smelting or sintered material in the fluorine content method.
This section applies to imports of the determination of copper smelting or sintered material of fluorine content. Measurement range. 0.010% to 0.80%.
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 6682-2008 Analysis
3 Method summary
Sample with sodium peroxide and sodium hydroxide melt decomposition, leaching the melt water after filtration, fluorine and iron, copper, lead and separated, and then
pH6.5 ~ pH7.0 sodium citrate - triethanolamine medium with a saturated calomel electrode as the reference electrode selective electrode, indicating fluoride ion electric
Pole, potentiometric titrator determination of fluorine.
4 Reagents
Unless otherwise indicated, all reagents were of analytical grade method, in line with two water water GB/T 6682-2008 requirements.
4.1 sodium peroxide.
4.2 sodium hydroxide.
4.3 nitric acid (ρ = 1.42g/mL).
4.4 sodium citrate.
Triethanolamine 4.5.
4.6 hydrochloric acid (ρ = 1.19g/mL).
4.7 sodium fluoride.
4.8 phenol red.
4.9 nitric acid solution (12).
4.10 sodium hydroxide solution (0.05mol/L). Weigh 2.0g of sodium hydroxide dissolved in 1000mL of water, and mix.
4.11 sodium citrate solution (294g/L). Weigh 294g sodium citrate (4.4), dissolved in water and made up to 1000mL volumetric flask,
Mix well.
4.12 triethanolamine solution. Add 64mL of hydrochloric acid (4.6) in 100mL triethanolamine (4.5), a solution of sodium hydroxide (4.10) using
pH meter adjusted to pH6.5 ~ pH7.0, diluted with water to 500mL, and mix.
4.13 fluoro standard stock solution (2mg/mL). Weigh 2.211g at 120 ℃ drying 2h sodium fluoride (4.7), dissolved in water and transferred to
500mL volumetric flask, dilute with water to volume, and mix. Immediately transferred to dry plastic bottles saved.
4.14 fluoro standard working solution (100μg/mL). Pipette 25.00mL fluorine stock standard solution (4.13) in 500mL volumetric flask
Dilute with water to volume, and mix. Immediately transferred to dry plastic bottles.
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