China has formulated 4 new standards for detection and appraisal of cultural relics

A few days ago, the National Standards Commission issued a notice of the first batch of national standards revision plans in 2014. It proposes to formulate four new national standards for the identification of ancient ceramics.

China is a country with a large number of cultural heritages, of which ceramics account for a large proportion of cultural relics. The circulation of ceramic cultural relics is also frequent, and it is also a popular item in the identification of cultural relics. In recent years, based on a comprehensive study of large amounts of data of ancient ceramic specimens from different kiln mouths and different ages, a method has been developed that uses indirect chemical source composition testing and multivariate statistical analysis to perform indirect source-to-off generation of ancient ceramics.

At present, there are two types of analysis methods that can be applied to non-destructive testing of ancient ceramics: energy dispersive X-ray fluorescence analysis (EDXRF) and proton excitation X-ray fluorescence analysis (PIXE).

Formulated “ECDRF Technical Specifications for Non-destructive Testing of Ancient Ceramics” and “PIXE Analysis Technical Specifications for Non-destructive Testing of Ancient Ceramics”, mainly aiming at the urgently needed technical requirements for testing and analysis of cultural relics for entry and exit, and formulating non-destructive tests for chemical composition of ancient ceramics. Technical specifications, which will help regulate the current emerging and more confusing cultural and scientific technology testing market in China, will help ensure the scientific detection of the safety of Chinese materials, as well as the authenticity and reliability of data, and provide science for the comprehensive identification of ceramic cultural relics. in accordance with.

At present, there is no relevant national standard and industrial standard for the reference technology of ancient ceramic thermoluminescence measurement. Domestic thermoluminescent laboratory has its own method for determining the age of ancient ceramics. However, due to the high requirements for sampling, sample preparation, and testing of ancient ceramic thermoluminescence dating technology, if there are no corresponding specifications and requirements, the measured results will have large errors, and the accuracy and authenticity will be affected. . Therefore, the formulation of the "Technical Specifications for the Thermoluminescence of Ancient Ceramics" on the one hand can standardize the technical methods for the determination of ancient ceramics by thermoluminescence in the laboratory. On the other hand, it can reduce the measurement error and improve the accuracy and authenticity of the determination. Makes the consistency of measurement results between laboratories. This standard mainly stipulates the thermoluminescence measurement of ancient pottery, ancient porcelain doses, annual doses of ancient ceramics, calibration of laboratory radioactive sources, errors and device requirements for the determination of ancient ceramics by thermoluminescence, and test reports.

In addition, the formulation of "Technical Specifications for neutron activation analysis in ancient ceramics" will improve the scientific analysis of ancient ceramics and analyze the comparability of data, and promote the systematic exploration of its cultural and artistic values, historical values, and scientific values. This standard specifies the technical requirements in the neutron activation analysis process. This standard is applicable to the experimental process of sample preparation, sample irradiation, experimental measurement, and data processing in the measurement of trace element content in ancient ceramics.