The Inorganic Metrology Group realizes the definition of the mole (the SI unit of amount of substance) in practice and establishes measurement standards with metrological traceability to the definitions of the SI units for the inorganic and electrochemical analysis. Our measurement standards are disseminated through the various certified reference materials (CRMs) for food products, the environment, and industrial materials. The group has developed high-level measurement methods and established international equivalence through international comparisons with other national metrology institutes. Through these R&D activities, the Inorganic Metrology Group aims to enhance the reliability of Korea's analysis capabilities in the inorganic and electrochemical analysis fields.
Current R&D Projects
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1
Practical realization of the SI base unit the mole for elements/ions/inorganic compounds
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2
Development and management of purity analysis methods and the highest grade reference materials for elements/ions/inorganic compounds to ensure metrological traceability to SI base units
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3
Development of CRMs for the analysis of harmful elements and nutrient elements in food products
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4
Development of CRMs to ensure the reliability of chemical analysis of nuclear power plants
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5
Development of CRMs for environmental inorganic analysis of heavy metals in fine dust
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6
Development of CRMs for the analysis of key industrial material constituents and doping elements
Recent R&D Highlights
- New Coulometry system with the lowest level of measurement uncertainty for practical realization of the mole
- Development of robust analytical procedures for purity determination of pure metallic elements to be used for calibration solution
- Establishment of measurement standard for copper (Cu) isotopic delta with international equivalence (KRISS CRM 105-07-001)
- Provision of metrological traceability to the SI for the testing and calibration laboratories through calibration solutions of more than 8 elements or anions reproduced every year (KRISS CRM 105-02 & 105-04 series)
- Development of CRMs such as steam generator blowdown water of power plant and ordinary water of reactor coolant system for the analysis of elements and anions (KRISS CRM 114-02-001, 002, 003, 004)
- Coordination of Key Comparisons such as CCQM-K146 Alumina and CCQM-K158 rice for the international equivalence of national measurement standards of Korea
Introducing Teams in a Group
Inorganic Reference Material Team
The Inorganic Reference Material Team develops and disseminates measurement standards and certified reference materials through techniques that measures elements/ions/inorganic compounds in a wide array of samples, such as those used in the food industry as well as for environmental, clinical, and industrial material applications. The efforts of the team is aimed at enhancing reliability of measurements in fields that are closely related to the daily lives of the general public. Examples include the development of certified reference materials of food products for harmful/nutrient element analysis and fine dust certified reference materials for harmful element analysis. Furthermore, the team develops certified reference materials related to industrial materials such as plastic and high-purity alumina according to the RoHS Directive, contributing to the competitive growth of national industries.
Key Research Area
- Research on high-level inorganic element measurement methods such as isotope dilution inductively coupled plasma mass spectroscopy (ID ICP-MS)
- Development of certified reference materials for the analysis of harmful elements and nutrient elements in food products
- Development of certified reference materials to ensure the reliability of chemical analysis of nuclear power plants
- Development of certified reference materials for environmental inorganic analysis of heavy metals in fine dust
- Development of certified reference materials for the analysis of key industrial material constituents and doping elements
Inorganic Basic Metrology Team
The Inorganic Basic Metrology Team realizes the SI base unit of amount of substance in chemistry, the mole, by developing key measurement technologies such as electrochemical, isotope ratio measurement, and purity analysis methods for elements/ions/inorganic compounds. Furthermore, the team develops and disseminates certified reference materials such as pure substances, single element standard solutions, and isotope ratio standard solutions for ensuring metrological traceability and establish the core infrastructure of Korea's inorganic analysis capabilities.
Key Research Area
- Practical realization of the SI base unit mole for elements/ions/inorganic compounds
- Development and management of purity analysis methods and the highest grade reference materials for elements/ions/inorganic compounds to ensure metrological traceability to SI base units
- Research on high-level electrochemical measurement methods such as coulometry
- Development of measurement methods and reference materials for inorganic element isotope ratio
- Development of measurement technology based on high-energy spectroscopy such as instrumental neutron activation analysis (INAA), and X-ray based chemical species separation analysis methods
About Other Groups
