Article Sidebar
Views PDF: 10
Metrics
Comparing sample preparation methods for simultaneous determination of heavy metals and food micronutrient supplements by ICP-MS method
Main Article Content
Abstract
A comparative study of three sample digestion methods for the simultaneous determination of 11 elements in food supplements by ICP-MS method is presented. The methods include: ashing the sample in a furnace at 500°C followed by acid dissolution; digesting the sample in a Poly TetraFluoroEthylene tube with a heating device at 170°C for 4 hours; and microwave digestion at 170°C for 40 minutes. The accuracy of the methods was evaluated by analysizing a Fapas T07509QC- Nutritional Food Supplement reference and the results showed good consistency between the certified values and the measured values for both wet digestion and microwave digestion methods. These results suggest that the sample digestion method in a PTFE tube with a heating device has the potential to become a widely used solution in laboratories, especially those without microwave systems, while improving efficiency, accuracy, and cost-effectiveness in elemental analysis by ICP-MS.
Keywords
Heavy metals, ICP-MS, micronutrients, sample digestion method
Article Details
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
References
[2]. Salgueiro M, Zubillaga J, Lysionek M, Sarabia A, Caro MI, Paoli R (2000). Zinc as an essential micronutrient: A review. Nutr. Res. 20(5):737-755
[3]. Ammann, A. A. (2007). Inductively coupled plasma mass spectrometry (ICP MS): a versatile tool. Journal of Mass Spectrometry, 42, 419–427
[4]. Parsons, P. J., & Barbosa, F. (2007). Atomic spectrometry and trends in clinical laboratory medicine. Spectrochimica Acta, Part B, 62, 992–1003.
[5]. Pereira JSF, Pereira LSF, Schmidt L, Moreira CM, Barin JS, Flores EMM (2013) Metals determination in milk powder samples for adult and infant nutrition after focused-microwave induced combustion. Microchem J 109:29–35
[6]. Nemati K, Bakar NKA, Abas MRB, Sobhanzadeh E, Low KH (2010) Comparative study on open system digestion and microwave assisted digestion methods for metal determination in shrimp sludge compost. J Hazard Mater 182:453–459
[7]. Doner, G. and Ege, A. (2004). Evaluation of digestion procedures for the determination of iron and zinc in biscuits by flame atomic absorption spectrometry. Anal. Chim. Acta 520 (1-2), 217-222.
[8]. Yaman, M.; Cokol, N. Determination of trace elements in human and cow milk and baby food by atomic absorption spectrophotometry using conventional wet ashing and microwave oven. Atomic Spectrosc. 2004, 25 (4), 194– 199.
[9]. Tuzen, M., & Soylak, M. (2007). Evaluation of trace element contents in canned foods marketed from Turkey. Food Chemistry, 102, 1089–1095.
[10]. Kira, C. S., & Maihara, V. A. (2007). Determination of major and minor elements in dairy products through inductively coupled plasma optical emission spectrometry after wet, partial digestion and neutron activation analysis. Food Chemistry, 100, 390–395.
[11]. Al Khalifa, A. S., & Ahmad, D. (2010). Determination of key elements by ICP-OES in commercially available infant formulae and baby foods in Saudi Arabia. African Journal of Food Science, 4, 464–468.
[12]. Llorent-Martinez, E. J., Fernandez de Cordova, M. L., Ruiz-Medina, A., & OrtegaBarrales, P. (2012). Analysis of 20 trace and minor elements in soy and dairy yogurts by ICP-MS. Microchemical Journal, 102, 23–27.
[13]. Elene P. Nardi , Fábio S. Evangelista , Luciano Tormen , Tatiana D. Saint´Pierre , Adilson J. Curtius , Samuel S. de Souza , Fernando BarbosaThe use of inductively coupled plasma mass spectrometry (ICP-MS) for the determination of toxic and essential elements in different types of food samples. Food Chemistry, 112, 727-732.