title: A simple design for microwave assisted digestion vessel with low reagent consumption suitable for food and environmental samples.
abstract: The objective of this work is to prepare a cost-effective, low reagent consumption and high performance polytetrafluoroethylene (PTFE) vessel that is capable to work in domestic microwave for digesting food and environmental samples. The designed vessel has a relatively thicker wall compared to that of commercial vessels. In this design, eight vessels are placed in an acrylonitrile butadiene styrene (ABS) holder to keep them safe and stable. This vessel needs only 2.0 mL of HNO3and 1.0 mL H2O2to digest 100 mg of biological sample. The performance of this design is then evaluated with an ICP-MS instrument in the analysis of the several NIST standard reference material of milk 1849a, rice flour 1568b, spinach leave 1570a and Peach Leaves 1547 in a domestic microwave oven with inverter technology. Outstanding agreement to (SRM) values are observed by using the suggested power to time microwave program, which simulates the reflux action occurring in this closed vessel. Taking into account the high cost of commercial microwave vessels and the volume of chemicals needed for various experiments (8-10 mL), this simple vessel is cost effective and suitable for digesting food and environmental samples.
authors.affiliation: Department of Chemistry, Marvdasht Branch, Islamic Azad University, P.O. Box 465, Marvdasht, Iran.|Department of Chemistry, University of Malaya, Kuala Lumpur 50603, Malaysia.
authors.forename: Mehrdad
authors.initials: M
authors.lastname: Gholami
authors.affiliation: Department of Chemistry, University of Malaya, Kuala Lumpur 50603, Malaysia.
authors.forename: Shima
authors.initials: S
authors.lastname: Behkami
authors.affiliation: Department of Chemistry, University of Malaya, Kuala Lumpur 50603, Malaysia.
authors.forename: Sharifuddin Md
authors.initials: SM
authors.lastname: Zain
authors.affiliation: Department of Chemistry, Yıldız Technical University, 34220 İstanbul, Turkey.
authors.forename: Sezgin
authors.initials: S
authors.lastname: Bakirdere