Please use this identifier to cite or link to this item:
|Title:||New reference material for analysis of elements in glutinous rice produced at the National Institute of Metrology (Thailand)|
Tippaya Julwee Fortune
Thailand Ministry of Science and Technology
School of Environment, Resources and Development
Thailand Ministry of Public Health
National Food Institute
Department of Livestock Development (DLD)
Central Laboratory (Thailand) Co.
Thailand Institute of Scientific and Technological Research (TISTR)
Thailand Institute of Nuclear Technology, Bangkok
Padaeng Industry Public Company Limited
|Keywords:||Chemical Engineering;Chemistry;Engineering;Physics and Astronomy|
|Citation:||Accreditation and Quality Assurance. Vol.15, No.4 (2010), 223-231|
|Abstract:||Reference materials play an important role for evaluating the accuracy of analytical results, and are essential parts of good laboratory practice. They represent a key tool for quality control of chemical analyses. In Thailand, the demand of food and environmental reference materials is constantly increasing, and the National Institute of Metrology (NIMT, Thailand) is responding to the urgent needs for affordable materials, which require collaborative efforts at the national level. This paper describes the preparation of a new glutinous rice reference material, along with homogeneity and stability studies and the analytical work carried out for the certification of the contents of inorganic elements. The incurred material was collected from an actual rice paddy field. Material preparation along with homogeneity and stability testing were carried out at the Environmental Research Training Centre (ERTC). The homogeneity study was designed to have three experimental conditions; (A) 10 bottles of candidate materials being analyzed each with 2 replicates, (B) 20 bottles with 2 replicates, (C) 10 bottles with 7 replicates, in order to study the suitable treatments for homogeneity testing in the reference material production. It was shown that a minimum number of 10 bottles with duplicate analyses are enough to demonstrate the homogeneity of candidate reference material. Certification of a candidate reference material in a single laboratory using reference method was confirmed with an interlaboratory comparison participated by a certain number of well recognized testing laboratories in Thailand. Further elaborative results will be discussed. © Springer-Verlag 2009.|
|Appears in Collections:||Scopus 2006-2010|
Files in This Item:
There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.