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GB/T 3260.6-2013: Methods for chemical analysis of tin -- Part 6: Determination of arsenic contents -- Malachite green arsenic molybdenum heteropoly acid photometric method
Status: Valid GB/T 3260.6: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 3260.6-2013 | English | 189 |
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Methods for chemical analysis of tin -- Part 6: Determination of arsenic contents -- Malachite green arsenic molybdenum heteropoly acid photometric method
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GB/T 3260.6-2013
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| GB/T 3260.6-2000 | English | 199 |
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Methods for chemical analysis of tin. Determination of arsenic content
| Obsolete |
GB/T 3260.6-2000
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| GB/T 3260.6-1982 | English | RFQ |
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Chemical analysis of tin--The Fe (II)-o-phenanthroline indirect photometric method for determination of arsenic
| Obsolete |
GB/T 3260.6-1982
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PDF similar to GB/T 3260.6-2013
Basic data | Standard ID | GB/T 3260.6-2013 (GB/T3260.6-2013) | | Description (Translated English) | Methods for chemical analysis of tin -- Part 6: Determination of arsenic contents -- Malachite green arsenic molybdenum heteropoly acid photometric method | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | H13 | | Classification of International Standard | 77.120.60 | | Word Count Estimation | 8,831 | | Older Standard (superseded by this standard) | GB/T 3260.6-2000 | | Regulation (derived from) | National Standards Bulletin No. 25 of 2013 | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | | Summary | This standard specifies the amount of malachite green tin arsenic - arsenic key heteropoly acid spectrophotometric method. This standard applies to the determination of tin in the amount of arsenic. Measuring range of 0. 00020% ~ 0. 120%. | GB/T 3260.6-2013: Methods for chemical analysis of tin -- Part 6: Determination of arsenic contents -- Malachite green arsenic molybdenum heteropoly acid photometric method
---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.
Methods for chemical analysis of tin Part 6... Determination of arsenic contents Malachite green arsenic molybdenum heteropoly acid photometric method
ICS 77.120.60
H13
National Standards of People's Republic of China
Replacing GB/T 3260.6-2000
Chemical analysis of tin
Part 6. Determination of arsenic content
Malachite Green - arsenic heteropolyoxomolybdate spectrophotometry
Part 6. Determinationofarseniccontents-
Issued on. 2013-12-17
2014-09-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
GB/T 3260 "Methods for chemical analysis of tin" is divided into 14 parts.
--- Part 1. Determination of copper content - Flame atomic absorption spectrometry;
--- Part 2. Determination of iron content - 1,10-phenanthroline spectrophotometry;
--- Part 3. Determination of bismuth content of potassium iodide spectrophotometric method and the flame atomic absorption spectrometry;
--- Part 4. Determination of lead content by flame atomic absorption spectrometry;
--- Part 5. Determination of antimony content - Malachite green spectrophotometry;
--- Part 6. Determination of arsenic content - Malachite Green - arsenic heteropolyoxomolybdate spectrophotometry;
--- Part 7. Determination of aluminum content electrothermal atomic absorption spectrometry;
--- Part 8. Determination of zinc content - Flame atomic absorption spectrometry;
--- Part 9. Determination of sulfur content of high frequency induction furnace combustion infrared absorption method;
--- Part 10. Determination of cadmium content by flame atomic absorption spectrometry;
--- Part 11. Determination of the amount of silver by flame atomic absorption spectrometry;
--- Part 12. Determination of nickel content by flame atomic absorption spectrometry;
--- Part 13. Determination of cobalt content by flame atomic absorption spectrometry;
--- Part 14. Inductively coupled plasma atomic copper, iron, bismuth, lead, antimony, arsenic, aluminum, zinc, cadmium, nickel, cobalt and the amount of emitted light
Spectroscopy.
This section GB/T 3260 Part 6.
This section drafted in accordance with GB/T 1.1-2009 given rules.
This part is GB/T 3260.6-2000 "chemical analysis of tin Determination of arsenic content" revision, this part of the GB/T 3260.6-
Compared to 2000, the main changes are as follows.
--- Text format has been modified;
--- Increasing the repeatability and reproducibility content.
The non-ferrous metal part by the National Standardization Technical Committee (SAC/TC243) centralized.
This section is responsible for drafting unit. Yunnan Tin Group Co., Ltd., Guangxi China Tin Group Co., Ltd.
This section is drafted. Yunnan Tin Group Co., Ltd.
Participated in the drafting of this section. Guangxi China Tin Group Co., Ltd. Daye Nonferrous Metals Design and Research Institute, Hunan Chenzhou Mining and cloud
limited liability company.
The main drafters of this section. Yang Jun, Yin Gang, Huang Mei, Lan, Miss Li, Wu Youcheng, Wei Zhen Yan, cold wax spring, Li Zhihong, Tan Yong,
Xiaoyue Yong.
This part of the standard replaces the previous editions are.
--- GB/T 3260.6-1982;
--- GB/T 3260.6-2000.
Chemical analysis of tin
Part 6. Determination of arsenic content
Malachite Green - arsenic heteropolyoxomolybdate spectrophotometry
1 Scope
GB/T 3260 This section specifies the amount of malachite green tin arsenic - arsenic molybdenum heteropoly acid spectrophotometric method.
This section applies to the determination of tin in the amount of arsenic. Determination of the range of 0.00020% ~ 0.120%.
2 Method summary
A specimen in a sulfuric acid, hydrogen peroxide dissolved. In sulfuric acid medium with zinc particles is reduced to arsenic and arsine gas separating matrix, escaping gas
Absorbing iodine. In the c (1/2H2SO4) = 0.7mol/L ~ 0.9mol/L sulfuric acid acidity, the presence of polyvinyl alcohol, arsenic heteropolyoxomolybdate
With the formation of the green malachite green ionic association, at a wavelength of 635nm spectrophotometer measured absorbance.
3 Reagents
Unless otherwise indicated in the analysis using only recognized as analytical grade reagents and distilled or deionized water or equivalent purity.
3.1 arsenic-free zinc particles (φ3mm ~ φ7mm).
3.2 sulfate (ρ1.84g/mL).
3.3 hydrochloride (ρ1.19g/mL).
3.4 Hydrogen peroxide (30%).
3.5 sulfate (11).
3.6 sulfate (317).
3.7 hydrochloride (11).
3.8 hydrochloride (199).
3.9 stannous chloride solution (400g/L). Weigh 40g of stannous chloride (SnCl2 · 2H2O) in 200mL beaker, add approximately 80mL of hydrochloric acid
(3.7), cover the dish table, micro heat of solution is completely clear, and cooled to room temperature, hydrochloric acid (3.7) diluted to 100mL, and mix.
3.10 tartaric acid [L () - tartaric acid] solution (300g/L).
3.11 iodine absorption solution (2g/L). Weigh 2g 4g of iodine and potassium iodide in a beaker, add a little water to dissolve, then diluted with water to 1L, and mix.
3.12 sodium sulfite solution (100g/L). Using now.
3.13 ammonium molybdate solution (15g/L). Weigh accurately 7.5g of ammonium molybdate [(NH4) 6Mo7O24 · 4H2O] in 400mL water micro beaker
Heat to dissolve, after cooling diluted with water to 500mL, transferred to a plastic bottle, and mix.
3.14 ammonium molybdate - sulfuric acid mixture. amount of an equal volume of ammonium molybdate solution (3.13) and sulfuric acid (3.6) in a plastic bottle, mix, using now.
3.15 Polyvinyl alcohol (PVA-124, degree of polymerization of 2400 to 2500) solution (10g/L). Dry filtration using a cotton.
3.16 Malachite Green (biological stain plain BS, molecular formula. C23H25ClN2, MW. 364.90) solution (1.5g/L). Weigh 0.300g hole
Finches malachite green in 80mL of ethanol (11) was dissolved, diluted with water to 200mL, and mix. Dry filtration using a cotton.
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