Method validation for determination of lead and cadmium in paper for food contact using microwave digestion followed by inductively coupled plasma mass spectrometry

Name: Netsirin Gissawong

Organization : Department of Science Service. Chemicals and Consumer Products Division

Name: Veerapat Ramanee

Organization : Department of Science Service. Chemicals and Consumer Products Division

Name: Warunrat Buranakul

Organization : Department of Science Service. Chemicals and Consumer Products Division

Name: Nootjarin Phonhong

Organization : Department of Science Service. Chemicals and Consumer Products Division

Name: Weera Suanthaisong

Organization : Department of Science Service. Chemicals and Consumer Products Division

Email : weera@dss.go.th

LCSH: Food containers -- Materials -- Safety measures

LCSH: Food contamination

LCSH: Inductively coupled plasma mass spectrometry

Abstract: Nowadays, paper-based materials are one of food contact materials (FCMs), extensively used worldwide to fulfill eco-friendly trend due to its degradation. However, paper is often treated with coating, additive, and adhesive materials to enhance its functional properties. Therefore, contaminants such as optical brightening agents, antimicrobial constituents and heavy metals can migrate from paper based FCMs to food. This work proposed the method validation for lead (Pb) and cadmium (Cd) analysis in the paper. It is necessary that the laboratory has to validate this testing method to evaluate whether the validated method is fit for intended use. The paper-based FCMs were digested using microwave digestion in acidic condition. All metals were then analyzed by inductively coupled plasma mass spectrometry (ICP-MS) which is used instead of European Standard (EN) 12498 method referred in Thai Industrial Standard (TIS) 2948-2019 standard due to unacceptable accuracy in adsorbent-paper. The results indicated that this method can detect the metals in the acceptable range of TIS criteria as Pb lower than 3.0 mg kg-1 and Cd lower than 0.50 mg kg- 1. The bias and precision studies showed that percentage of recovery and relative standard deviations of two elements were between 86˗103% and less than 10%, respectively. Moreover, the expanded uncertainties of all elements were not more than ±20% at the confidence level of 95%. Thus, this test method for determination of two heavy metals in food contact paper by ICP-MS using microwave digestion was valid and fit for the intended use

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.161-165). Bangkok : Kasetsart University, 2024

eng

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