GB/T 33909-2017 in English
VALIDMethods for chemical analysis of platinum--Determination of palladium, rhodium, iridium, ruthenium, gold, silver, aluminium, bismuth, chromium, copper, iron, nickel, lead, magnesium, manganese, tin, zinc, silicon content--Inductively coupled plasma mass s
- Issued on:2017-07-12
- Implemented on:2018-02-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$156.00
| Standard No: | GB/T 33909-2017 |
| Document status: | VALID |
| Title in English: | Methods for chemical analysis of platinum--Determination of palladium, rhodium, iridium, ruthenium, gold, silver, aluminium, bismuth, chromium, copper, iron, nickel, lead, magnesium, manganese, tin, zinc, silicon content--Inductively coupled plasma mass s |
| Title in Chinese: | 纯铂化学分析方法 钯、铑、铱、钌、金、银、铝、铋、铬、铜、铁、镍、铅、镁、锰、锡、锌、硅量的测定 电感耦合等离子体质谱法 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 1~3 business days |
| Issued on: | 2017-07-12 |
| Implemented on: | 2018-02-01 |
| ICS Classification: | 77.120.99-Other non-ferrous metals and their alloys |
| Chinese Classification: | Y68-Cooking appliances, basic standards and general methods |
| Professional Classification: | GB-National Standard |
| Related Keywords: | chemical analysis methods
chemical analysis determination methods plasma mass spectrometry plasma mass spectrometer |
| Related Topics: | Ferro Ruthenium Separation
Palladium Ruthenium Alloy Nano GBT33909 GB/T 33909-2017 Method for masking metal cations iron, magnesium and aluminum Exosome isolation and purification methods Magnesium metal quality |
《GB/T 33909-2017纯铂化学分析方法 钯、铑、铱、钌、金、银、铝、铋、铬、铜、铁、镍、铅、镁、锰、锡、锌、硅量的测定 电感耦合等离子体质谱法》由TC243（全国有色金属标准化技术委员会）归口，TC243SC5（全国有色金属标准化技术委员会贵金属分会）执行，主管部门为中国有色金属工业协会。
Introduction
National Standard of the People's Republic of China GB/T 33909—2017 Interpretation of Chemical Analysis Methods for Pure Platinum
1. Scope and Applicability of the Standard
This standard specifies the determination methods for 17 elements in pure platinum, including palladium (Pd), rhodium (Rh), iridium (Ir), gold (Au), silver (Ag), aluminum (Al), bismuth (Bi), chromium (Cr), copper (Cu), iron (Fe), nickel (Ni), lead (Pb), magnesium (Mg), manganese (Mn), tin (Sn), zinc (Zn) and silicon (Si). It is applicable to the analysis of trace impurity elements in pure platinum and its products.
2. Principle of the Method
Inductively coupled plasma mass spectrometry (ICP-MS) is used to perform quantitative analysis using the isotope signal intensity. According to the characteristics of different elements, different internal standards and working modes are used:
- Chromium (Cr), Iron (Fe), Silicon (Si): With yttrium (Y) as internal standard, the measurement is carried out in the reaction cell working mode.
- Palladium (Pd), Rhodium (Rh), Iridium (Ir), Gold (Au), Silver (Ag), Aluminum (Al), Bismuth (Bi), Copper (Cu), Nickel (Ni), Lead (Pb), Magnesium (Mg), Manganese (Mn), Zinc (Zn): With yttrium (Y) as internal standard, the measurement is carried out in the normal working mode.
- Tin (Sn): With indium (In) as internal standard, the measurement is carried out in the normal working mode.
- Gold (Au): The internal standard is used to combine the reaction cell mode and the equivalent subtraction method to measure.
3. Preparation of standard solutions and reagent requirements
The preparation process of standard solutions is complicated, and high-purity reagents and high-resistivity deionized water are required. The following are the preparation steps of several key standard solutions:
| Element | Determination range (%) | Preparation method |
|---|---|---|
| Silver (Ag) | 0.000020~0.0040 | Weigh 0.1000g of metallic silver, dissolve it and make up to 100mL. |
| Palladium (Pd) | 0.000020~0.0040 | Weigh 0.1000g of metal palladium, add nitric acid and hydrochloric acid to make up the volume. |
| Chromium (Cr) | 0.000020~0.0040 | Weigh 0.1000g of metal chromium, dissolve it at low temperature and make up the volume. |
4. Instrument requirements and performance indicators
It is recommended to use an inductively coupled plasma mass spectrometer (ICP-MS) that meets the following conditions:
- Linear correlation coefficient ≥ 0.999
- The lower limit of determination does not exceed the value specified in Table 2
- For recommended isotope mass numbers, see Table A.1
5. Sample processing and analysis steps
After the sample is crushed and dissolved, add the mixed internal standard solution and prepare the working curve for determination. The following are the key steps:
| Steps | Operation Description |
|---|---|
| Sample Weighing | Accurately weigh 0.10g of sample, to 0.0001g. |
| Sample Dissolution | Add hydrochloric acid and nitric acid and heat at low temperature until completely dissolved, cool and make up to volume. |
| Working Curve Preparation | Add standard solution and internal standard solution according to the volume in Table 3, make up to volume and shake well. |
6. Result calculation and precision requirements
Calculate the mass fraction of the element to be measured according to formula (1):
The results are rounded to two significant figures. The repeatability and allowable error are shown in Tables 4 and 5.
7. Implementation suggestions
To ensure the accuracy of the analysis results, it is recommended that:
- Strictly follow the standard solution preparation method to avoid introducing errors.
- Regularly calibrate the instrument performance to ensure that the linear correlation coefficient and the lower limit of determination meet the requirements.
- Perform blank tests and repeatability tests to ensure data reliability.
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