EurekaMag.com logo
+ Site Statistics
References:
53,623,987
Abstracts:
29,492,080
+ Search Articles
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on LinkedInFollow on LinkedIn

+ Translate

Microwave-assisted wet digestion with H2O2 at high temperature and pressure using single reaction chamber for elemental determination in milk powder by ICP-OES and ICP-MS



Microwave-assisted wet digestion with H2O2 at high temperature and pressure using single reaction chamber for elemental determination in milk powder by ICP-OES and ICP-MS



Talanta 156-157: 232-238



In this work a green digestion method which only used H2O2 as an oxidant and high temperature and pressure in the single reaction chamber system (SRC-UltraWave™) was applied for subsequent elemental determination by inductively coupled plasma-based techniques. Milk powder was chosen to demonstrate the feasibility and advantages of the proposed method. Samples masses up to 500mg were efficiently digested, and the determination of Ca, Fe, K, Mg and Na was performed by inductively coupled plasma optical emission spectrometry (ICP-OES), while trace elements (B, Ba, Cd, Cu, Mn, Mo, Pb, Sr and Zn) were determined by inductively coupled plasma mass spectrometry (ICP-MS). Residual carbon (RC) lower than 918mgL(-1) of C was obtained for digests which contributed to minimizing interferences in determination by ICP-OES and ICP-MS. Accuracy was evaluated using certified reference materials NIST 1549 (non-fat milk powder certified reference material) and NIST 8435 (whole milk powder reference material). The results obtained by the proposed method were in agreement with the certified reference values (t-test, 95% confidence level). In addition, no significant difference was observed between results obtained by the proposed method and conventional wet digestion using concentrated HNO3. As digestion was performed without using any kind of acid, the characteristics of final digests were in agreement with green chemistry principles when compared to digests obtained using conventional wet digestion method with concentrated HNO3. Additionally, H2O2 digests were more suitable for subsequent analysis by ICP-based techniques due to of water being the main product of organic matrix oxidation. The proposed method was suitable for quality control of major components and trace elements present in milk powder in consonance with green sample preparation.

(PDF same-day service: $19.90)

Accession: 058316101

Download citation: RISBibTeXText

PMID: 27260458

DOI: 10.1016/j.talanta.2016.05.019



Related references

Green microwave-assisted wet digestion method of carbohydrate-rich foods with hydrogen peroxide using single reaction chamber and further elemental determination using ICP-OES and ICP-MS. Microchemical Journal 134: 257-261, 2017

Study and determination of elemental impurities by ICP-MS in active pharmaceutical ingredients using single reaction chamber digestion in compliance with USP requirements. Talanta 136: 161-169, 2015

New technology for in situ visualization, monitoring and controlling microwave chemical reaction progress using a focused microwave high pressure-temperature closed-vessel digestion system. Analyst 134(7): 1490-1497, 2009

Optimization of H2O2 action in sewage-sludge microwave digestion using Δ pressure vs. temperature and pressure vs. time graphs. Microchemical Journal 67(1-3): 171-179, 2000

Performance evaluation of a high-pressure microwave-assisted flow digestion system for juice and milk sample preparation. Analytical and Bioanalytical Chemistry 409(18): 4449-4458, 2017

Optimization of H2O2 action in sewage-sludge microwave digestion using DELTA pressure vs. temperature and pressure vs. time graphs. Microchemical Journal 67(1-3): 171-179, December, 2000

Microwave-assisted carbofuran degradation in the presence of GAC, ZVI and H2O2: Influence of reaction temperature and pH. Separation and Purification Technology 76(3): 244-252, 2011

An evaluation of microwave-assisted fusion and microwave-assisted acid digestion methods for determining elemental impurities in carbon nanostructures using inductively coupled plasma optical emission spectrometry. Talanta 148: 94-100, 2015

Microwave digestion with HNO3/H2O2 mixture at high temperatures for determination of trace elements in coal by ICP-OES and ICP-MS. Analytica Chimica Acta 514(1): 115-124, June 30, 2004

Elemental analysis using microwave digestion and an environmental evaporation chamber. Applied Spectroscopy. 52(2): 200-204,., 1998

Determination of Pt from coke samples by ICP-MS after microwave assisted digestion and microwave assisted cloud point extraction. Microchimica Acta 166(3-4): 255-260, 2009

Microwave-assisted alkaline digestion combined with microwave-assisted distillation for the determination of iodide and total iodine in edible seaweed by catalytic spectrophotometry. Analytica Chimica Acta 542(2): 287-295, 2005

Feasibility of nut digestion using single reaction chamber for further trace element determination by ICP-OES. Microchemical Journal 116: 255-260, 2014

Ultrasonic-assisted enzymatic digestion for total elemental determination and elemental speciation a tutorial. Talanta: 4, 872-884, 2008

Ultrasonic-assisted enzymatic digestion (USAED) for total elemental determination and elemental speciation: a tutorial. Talanta 75(4): 872-884, 2008