Thailand reference material : TRM-F-2007 elements in turmeric powder

Name: Pranee Phukphatthanachai

Organization : National Institute of Metrology (Thailand)

Email : pranee@nimt.or.th

Name: Nunnapus Laitip

Organization : National Institute of Metrology (Thailand)

Name: Usana Leekriangkrai

Organization : National Institute of Metrology (Thailand)

LCSH: Reference sources -- Standards

LCSH: Analytical chemistry

LCSH: Inductively coupled plasma mass spectrometry

LCSH: Turmeric

Abstract: The application of certified reference material (CRM) in analytical chemistry for quality control purposes is recognized and recommended by international, national and professional organizations worldwide. Due to the unavailability of matrix matched CRMs in our country, TRMF- 2007: elements in turmeric powder (Curcuma longa) was initiated by National Institute of Metrology (Thailand) (NIMT) for the analysis of key elements. It was developed under the trade name of Thailand Reference Material (TRM). Quantification of fifteen elements was performed by ICP-MS and ICP-OES using three analytical calibrations: isotope dilution mass spectrometry (IDMS), gravimetric standard addition (GSA) and external calibration. Homogeneity and short-term stability were studied using external calibration technique, while long-term stability was studied using IDMS or GSA. Statistical data shows that TRM-F-2007 is homogeneous and stable at temperature 45 oC for three weeks and it is stable at room temperature at least 3 years. Characterization of the elements requires at least two analytical methods. Eleven elements (As, Ca, Cd, Cu, Fe, K, Mg, Ni, P, Pb and Zn) were certified by weighting method from 2 – 6 analytical methods to provide accuracy and measurement uncertainty whereas 4 elements (Cr, Hg, Mn and Na) are mentioned as information value. The entire process of production, measurement and the statistical models used are all performed according to the quality system ISO 17034, ISO/IEC 17025 and ISO Guide 35, respectively. TRMF- 2007, which is reliable and traceable to SI units demonstrating the unbroken chain, is suitable for quality control purposes such as method validation, and quality control sample.

King Mongkut's University of Technology North Bangkok. Central Library

Address: BANGKOK

Email: library@kmutnb.ac.th

Created: 2024

Modified: 2024-11-27

Issued: 2024-11-27

บทความ/Article

application/pdf

BibliograpyCitation : In Kasetsart University. Faculty of Science. The Pure and Applied Chemistry International Conference 2024 (PACCON 2024) (pp.170-175). Bangkok : Kasetsart University, 2024

eng

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