Vol.9 No.2 2016

Research paper : Development and utilization of geochemical reference materials (T. OKAI)−69−Synthesiology - English edition Vol.9 No.2 (2016) by a method with its accuracy verified), was considered. Under these circumstances, GSJ became an independent administrative agency from the national research institution in April of 2000, and, fundamentally, reference materials became available only by sale. In addition, based on its track record, GSJ was acknowledged globally as a main issuing (producing) organization of geochemical reference materials, and it also bore social responsibility to a certain degree. Therefore, for the sale of GSJ reference materials, it was determined that it would be best to follow the regulations of ISO and provide certified reference materials. Thus, GSJ initiated a completely opposite method of selling reference materials with a certificate. ISO certification as a reference material producer was acquired in 2007 through the ASNITE program of the International Accreditation Japan (IA Japan), the National Institute of Technology and Evaluation (NITE).[19] Currently, all newly prepared reference materials are certified reference materials (Fig. 7), and GSJ was awarded a Prize of the Minister of Education, Culture, Sports, Science and Technology (Department of Development) for the “Development of Certified Geochemical Reference Materials” in 2010.4.3.3 Publication via databaseIn the beginning, the whole data of reported analytical values was published in academic journals and some other sources. However, as the number of analytical values increased, it became difficult to publish the whole data in paper format. Consequently, as the Internet became well established, a program of publishing research results widely in the form of a database (RIO-DB project) was begun at the former Agency of Industrial Science and Technology. Analytical data of geochemical reference materials could be processed statistically, and information such as samples, components (elements), analytical values, analytical methods, analysts, and literature (the date of publication) were digitized as a set. Thus, the database could be created with relative ease. For this reason, it was proposed as one of the first contents to be summarized under the RIO-DB project. This was an ideal method for GSJ because it was searching for a method by which as many analytical values as possible could be published. The database allows for publication of the whole Producer (issuer)Sample nameMain usageCertified value and reference valueAnalytical method (measurement method)Pretreatment of sample (decomposition method)Determination method for certified valueSample preparation method (preparation method)Notes on usage and storageConfirmation of homogeneityCooperation organizationsIssuing date and person in chargeContact informationEtc.Contents of a certificateYearName of standard value72.240.2614. et al. (1971)[16], 1974:Ando et al. (1974)[17], 1988:Ando et al. (1989)[18], 1994:Imai et al. (1995)[12]1971consensusmean1974consensusmean1988consensusvalue1994recommendedvalue(w/w %)SiO2TiO2Al2O3T-Fe2O3MnOMgOCaONa2OK2OP2O5Table 4. Changes in major component standard values for the JG-1 sampleFig. 7 An example of a certificateList of described items and a part of the certificate for JB-2a: Izu Oshima basalt


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