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GB/T 38290-2019: Determination of cadmium in plastic materials
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 38290-2019 | English | 119 |
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Determination of cadmium in plastic materials
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GB/T 38290-2019
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Basic data | Standard ID | GB/T 38290-2019 (GB/T38290-2019) | | Description (Translated English) | Determination of cadmium in plastic materials | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | G31 | | Classification of International Standard | 83.080.01 | | Word Count Estimation | 6,675 | | Date of Issue | 2019-12-10 | | Date of Implementation | 2020-11-01 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 38290-2019: Determination of cadmium in plastic materials---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 cadmium in plastic materials
ICS 83.080.01
G31
National Standards of People's Republic of China
Determination of cadmium in plastic materials
2019-12-10 release
2020-11-01 implementation
State Administration of Market Supervision and Administration
Issued by the National Standardization Management Committee
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard was proposed by the China Petroleum and Chemical Industry Federation.
This standard is under the jurisdiction of the National Plastic Standardization Technical Committee (SAC/TC15).
This standard was drafted by. China Blue Chenguang Chemical Research and Design Institute Co., Ltd., Qingdao Product Quality Supervision and Inspection Institute, Chinese People
Qingdao Dagang Customs of the Republic, Zhonglan Chenguang Chengdu Inspection Technology Co., Ltd., Qingdao Zhongxin Huamei Plastic Co., Ltd., Beijing Physical and Chemical Analysis
Testing Center, Institute of Agricultural Quality Standards and Testing Technology, Chinese Academy of Agricultural Sciences, Jiangsu Taiter New Material Technology Co., Ltd.
The main drafters of this standard. Liu Lirong, Li Huanting, Gao Jianguo, Chen Minjian, Guo Bin, Hu Guanghui, Xia Yining, Han Jianwei, Wang Xiaobin, Gao Xia,
Liu Weili, Dong Zheng, Song Xiaoyun, Wang Yue.
Determination of cadmium in plastic materials
Warning --- Persons using this standard should have practical experience in formal laboratory work. This standard does not indicate all possible safety issues
Therefore, users are responsible for taking appropriate safety and health measures and ensuring that they meet the conditions stipulated by relevant national regulations.
1 Scope
This standard specifies the method for the determination of cadmium in plastic materials by inductively coupled plasma mass spectrometry.
This standard applies to the determination of cadmium in plastic materials and their products.
2 Normative references
The following documents are essential for the application of this document. For dated references, only the dated version applies to this article
Pieces. For the cited documents without date, the latest version (including all amendments) applies to this document.
GB/T 602 Preparation of standard solution for determination of impurities in chemical reagents
GB/T 6682 Analysis laboratory water specifications and test methods
GB/T 8170 Numerical Rounding Rules and Representation and Judgment of Limit Values
3 Principle
Crush the sample, weigh a certain amount of sample powder, use dry ashing method or microwave digestion, the digestion liquid is atomized by the carrier gas after being atomized
The body is desolvated, vaporized, dissociated and ionized in a high-temperature and inert argon atmosphere, converted into positively charged ions, and then enters the mass spectrometer.
The mass-to-charge ratio of the tested element is separated and characterized.For a certain mass-to-charge ratio, the signal intensity of the mass spectrum peak is positively related to the concentration of the element to be measured in the test solution
Than, using external standard method to quantify.
4 Reagent
Warning-tetrafluoroboric acid is highly corrosive and irritating, and can cause burns to the human body. Pay attention to protection during the dropping process.
Unless otherwise stated, the reagents used should be of superior grade pure and above, and the water used should meet the requirements of first-class water specified in GB/T 6682.
4.1 Nitric acid (HNO3). superior grade pure.
4.2 Hydrogen peroxide (H2O2), analytically pure.
4.3 Tetrafluoroboric acid (40%), analytically pure.
4.4 Nitric acid solution (5 95). Measure 50mL of nitric acid, add to 950mL of water, and mix.
4.5 Nitric acid solution (11). Measure 50mL of nitric acid, add to 50mL of water, and mix well.
4.6 Cadmium standard stock solution (1000mg/L or other concentration). A certain concentration that has been certified by the country and granted a standard substance certificate
Single or multi-element standard stock solution.
4.7 Internal standard element stock solution (1000mg/L or other concentrations). indium (In), rhodium (Rh), etc., which are certified by the country and awarded standard materials
Certificate of single or multi-element standard stock solution with certain concentration.
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