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Methods for analysis of total uranium and uranium-235/uranium-238 isotope ratio in urine. Inductively coupled plasma-mass spectrometry (ICP-MS)
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Basic data
| Standard ID | WS/T 549-2017 (WS/T549-2017) |
| Description (Translated English) | Methods for analysis of total uranium and uranium-235/uranium-238 isotope ratio in urine. Inductively coupled plasma-mass spectrometry (ICP-MS) |
| Sector / Industry | Health Industry Standard (Recommended) |
| Classification of Chinese Standard | C57 |
| Classification of International Standard | 13.280 |
| Word Count Estimation | 13,118 |
| Date of Issue | 2017-05-18 |
| Date of Implementation | 2017-11-01 |
| Issuing agency(ies) | National Health and Family Planning Commission of the People's Republic of China |
| Summary | This standard specifies the method of inductively coupled plasma mass spectrometry (ICP-MS) for the analysis of uranium total uranium and uranium-235/uranium-238 (235 U/238U) ratios. This standard is applicable to the measurement of uranium total uranium and 235U/238 ratio, other biological samples of the total uranium and 235U/238 U ratio analysis can refer to this standard. |
WS/T 549-2017: Methods for analysis of total uranium and uranium-235/uranium-238 isotope ratio in urine. Inductively coupled plasma-mass spectrometry (ICP-MS)
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Methods for analysis of total uranium and uranium-235/uranium-238 isotope ratio in urine. Inductively coupled plasma-mass spectrometry (ICP-MS)
ICS 13.280
C57
People's Republic of China Health Industry Standard
Urine total uranium and uranium-235/uranium-238
Ratio analysis method inductive coupling
Plasma mass spectrometry (ICP-MS)
Released on.2017-05-18
2017-11-01 implementation
National Health and Family Planning Commission of the People's Republic of China
Content
Foreword I
1 Scope 1
2 Terms and Definitions 1
3 Principle of the method 1
4 reagents and materials 1
5 Instrument 2
6 Collection of urine samples 2
7 Analysis step 2
8 Calculation and representation of results 3
Appendix A (informative) Reference working conditions for inductively coupled plasma mass spectrometers 5
Appendix B (informative appendix) Method for assessing measurement uncertainty 6
Reference 10
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard was drafted. China Center for Disease Control and Prevention, Institute of Radiation Protection and Nuclear Safety, China Institute of Metrology, China
Institute of Energy Science, Beijing Institute of Geology, Nuclear Industry, Northwest Institute of Nuclear Technology.
The main drafters of this standard. Ji Yanqin, Tian Qing, Guo Dongfa, Zhao Yonggang, Bohai, Li Zhiming, Shen Baoming, Shao Charter, Yin Liangliang.
Urine total uranium and uranium-235/uranium-238
Ratio analysis method inductive coupling
Plasma mass spectrometry (ICP-MS)
1 Scope
This standard specifies the ratio of total uranium and uranium-235/uranium-238 (235U/238U) in urine by inductively coupled plasma mass spectrometry (ICP-MS).
Methods.
This standard is applicable to the measurement of total uranium and 235U/238U ratio in human urine. The analysis of the ratio of total uranium and 235U/238U in other biological samples may be
Refer to this standard.
2 Terms and definitions
The following terms and definitions apply to this document.
2.1
Quality bias massbias
Observed or measured significant deviation of the isotope ratio from the true ratio, the bias is one of the mass differences between the two isotopes
function.
2.2
Quality discrimination massdiscrimination
The process of mass degradation in mass spectrometers. The measured value may “offset” from the true value due to the loss of light ions or heavy ions.
3 Principle of the method
3.1 Analysis of total uranium in urine. After digesting the urine sample with HNO3 H2O2, the volume was determined, and the total uranium content was analyzed by ICP-MS using the external standard method. this
The standard limit for the determination of uranium in urine is 16 ng/L.
3.2 Determination of 235U/238U ratio in urine. After digesting the urine sample with HNO3 H2O2, the chromatographic separation was performed by tributyl phosphate (TBP)
Uranium is extracted, and the ratio of 235U/238U is analyzed by ICP-MS. The mass spectrometer quality discrimination is corrected by uranium isotope standard substance.
4 reagents and materials
4.1 The experimental water is ultrapure water (H2O, resistivity ≥18.2MΩ/cm).
4.2 Nitric acid (HNO3, density 1.42g/mL). excellent grade pure or high purity.
4.3 Nitric acid (HNO3, concentration 5 mol/L). Prepared with water (4.1) and nitric acid (4.2).
4.4 Nitric acid (HNO3, volume fraction 2%). Prepared with water (4.1) and nitric acid (4.2) purified by sub-boiling distillation.
4.5 Hydrogen peroxide (H2O2, mass fraction 30%). analytically pure.
4.6 Sodium carbonate (Na2CO3). Analytical grade.
4.7 Sodium carbonate solution (Na2CO3, concentration 50 g/L). Prepared with water (4.1) and sodium carbonate (4.6).
4.8 Multi-element mixed standard solution. a mixed standard solution containing 10 elements such as Li, Be, Sc, Co, Y, In, Ba, Ce, Bi, U, etc.
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