YS/T 835: Evolution and historical versions
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(Determination of platinum, palladium and rhodium content in metal-supported catalysts for exhaust gas purification - Flame atomic absorption spectrometry and inductively coupled plasma atomic emission spectrometry)
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YS/T 835-2024
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| YS/T 835-2012 | English | 359 |
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Determination of platinum, palladium and rhodium in exhaust purfication metallic substrate auto-catalysts. Flame atomic absorption spectrometry
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YS/T 835-2012
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Basic data | Standard ID | YS/T 835-2024 (YS/T835-2024) | | Description (Translated English) | (Determination of platinum, palladium and rhodium content in metal-supported catalysts for exhaust gas purification - Flame atomic absorption spectrometry and inductively coupled plasma atomic emission spectrometry) | | Sector / Industry | Nonferrous Metallurgy Industry Standard (Recommended) | | Classification of Chinese Standard | H15 | | Classification of International Standard | 71.040.40 | | Date of Issue | 2024-10-24 | | Date of Implementation | 2025-05-01 | | Older Standard (superseded by this standard) | YS/T 835-2012 | | Issuing agency(ies) | Ministry of Industry and Information Technology | | Summary | This standard specifies the method for determining the platinum, palladium and rhodium content in metal carrier catalysts for exhaust gas purification by flame atomic absorption spectrometry and inductively coupled plasma atomic emission spectrometry. This standard applies to the determination of platinum, palladium and rhodium content in new and expired metal carrier catalysts for exhaust gas purification. The determination range of flame atomic absorption spectrometry and inductively coupled plasma atomic emission spectrometry is 5.00��g/g��2000��g/g for platinum, 5.00��g/g��4000��g/g for palladium, and 2.00��g/g��1000��g/g for rhodium. Inductively coupled plasma emission spectrometry is the arbitration method. | YS/T 835-2012: Determination of platinum, palladium and rhodium in exhaust purfication metallic substrate auto-catalysts. Flame atomic absorption spectrometry
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Determination of platinum, palladium and rhodium in exhaust purfication metallic substrate auto-catalysts.Flame atomic absorption spectrometry
ICS 77.120.99
H68
People's Republic of China Nonferrous Metals Industry Standard
Autocatalyst platinum metal carrier,
Palladium and rhodium content - Flame Atomic Absorption Spectrometry
Determinationofplatinum, paladiumandrhodiuminexhaustpurification
Issued on. 2012-11-07
2013-03-01 implementation
Ministry of Industry and Information Technology of the People's Republic of China released
Foreword
This standard was drafted in accordance with GB/T 1.1-2009 given rules.
This standard by the national non-ferrous metals Standardization Technical Committee (SAC/TC243) centralized.
This standard is drafted by. Guilin Research Institute of Geology and Minerals.
Participated in the drafting of this standard. BASF Catalysts (Guilin) Co., Ltd., Guilin University of Technology, metallurgical quality inspection stations in Guangxi, China geological
Science (Wuhan), Guangxi Research Center of Analysis and Testing, Beijing General Research Institute of Mining and Metallurgy.
The main drafters of this standard. Shi Yihua, Yu Lu Qi, Wang Sheng, Ye Kaifu, Lai Jinqiu, Xiongzhuan Xin, Deng level, Zhou Sulian, Huangzhao Min, Jinlan Lan,
Yang Xiongfei, Zhang, Wang Haoying, Dian Chen Geng.
Autocatalyst platinum metal carrier,
Palladium and rhodium content - Flame Atomic Absorption Spectrometry
1 Scope
This standard specifies the method for determination of the exhaust gas purification of platinum, palladium and rhodium content of the catalyst metal carriers.
This standard applies to the new system for purifying exhaust gas measurement and failure of platinum, palladium and rhodium content of the catalyst metal carriers.
Measurement range. platinum amount. 10μg/g ~ 2000μg/g; palladium content. 10μg/g ~ 4000μg/g; the amount of rhodium. 5μg/g ~ 1000μg/g.
2 Method summary
Sample using hydrochloric acid - extraction, to retain the filtrate precipitated sodium peroxide fusion - hydrochloric acid treatment, combined with the filtrate as a sample
Solution. In hydrochloric acid medium by co-precipitation of tellurium enrichment and separation of platinum, palladium and rhodium after the precipitate was dissolved with a mixed acid, the best in the atomic absorption spectrometer
Determination of platinum, palladium and rhodium content conditions.
3 Reagents and materials
Unless otherwise indicated in the analysis using only recognized as analytical grade reagents and distilled or deionized water or equivalent purity.
3.1 sodium chloride.
3.2 sodium peroxide.
3.3 hydrochloride (ρ1.19g/mL).
Nitrate 3.4 (ρ1.42g/mL).
3.5 fluoroborate (ρ1.32g/mL).
3.6 hydrochloric acid (6mol/L).
3.7 hydrochloride (2mol/L).
3.8 mixed acid. Three unit volume of hydrochloric acid (3.3) and a unit volume of nitric acid (3.4) and mix formulated with time.
3.9 mixed acid (19). a unit volume of the mixed acid (3.8) with nine volumes of water mixing unit, formulated with time.
3.10 tellurium oxide solution (5g/L). Weigh 2.5g of tellurium oxide dissolved in 20mL of hydrochloric acid (3.3), diluted with hydrochloric acid (3.6) to
500mL.
3.11 stannous chloride solution (200g/L). Weigh 20g of stannous chloride (SnCl2 · 2H2O) were dissolved in 100mL of hydrochloric acid (3.6), and took
Formulated.
3.12 lanthanum oxide solution (40g/L). Weigh 20g lanthanum oxide dissolved in 60mL mixed acid (3.8), diluted with water to 500mL,
Mix well.
3.13 platinum standard stock solution. Weigh 0.1000g platinum (mass fraction ≥99.99%) in 100mL beaker, add 10mL mixed
Co acid (3.8), cover the surface of the dish on a hot plate heated to completely dissolved, rinse and remove the surface of the dish, add 0.1g of sodium chloride (3.1),
Evaporated to dryness in a water bath. Added 5mL hydrochloric acid (3.3) driven nitrate, then repeat this operation twice. Added 10mL of hydrochloric acid (3.3) and 20mL
Water, heated to dissolve, cooled and transferred to 100mL volumetric flask, dilute with water to volume, and mix. This solution 1mL containing 1000μg platinum.
3.14 palladium standard stock solution. Weigh 0.1000g of palladium metal (mass fraction ≥99.99%) placed in 100mL beaker, add 10mL
Mixed acid (3.8), cover the surface of the dish on a hot plate heated until all dissolved, rinse and remove the surface of the dish, add 0.1g of sodium chloride (3.1),
Evaporated to dryness in a water bath. Added 5mL hydrochloric acid (3.3) driven nitrate, then repeat this operation twice. Added 10mL of hydrochloric acid (3.3) and 20mL
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