Determination of Ca, P, K, Na, and Mg in Australian Retail Pasteurised Milk Using Inductively Coupled Plasma Atomic Emission Spectroscopy (ICP OES)

Duc Doan Nguyen; Vicky Solah; Suzanne Daubney; Saijel Jani

doi:10.1155/2024/4417607

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Determination of Ca, P, K, Na, and Mg in Australian Retail Pasteurised Milk Using Inductively Coupled Plasma Atomic Emission Spectroscopy (ICP OES)

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Determination of Ca, P, K, Na, and Mg in Australian Retail Pasteurised Milk Using Inductively Coupled Plasma Atomic Emission Spectroscopy (ICP OES)

Duc Doan Nguyen, Vicky Solah, Suzanne Daubney and Saijel Jani

Journal of analytical methods in chemistry, Vol.2024(1), 4417607

2024

DOI: https://doi.org/10.1155/2024/4417607

PMID: 39161364

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Abstract

A rapid and simple inductively coupled plasma atomic emission spectrometry (ICP OES) method was developed and validated for the determination of macroelements including calcium (Ca), phosphorus (P), potassium (K), sodium (Na), and magnesium (Mg) in Australian retail pasteurised milk. The milk samples were digested using the mixture of 70% HNO3 and 30% H2O2 (2 : 1, v/v) in an open-tube digester block at 120 degrees C for 4 h. The validated ICP OES method showed good linearity for all elements (R-2 > 0.9993). The method limits of quantification (LOQ) for Ca, P, K, Na, and Mg were 19.85, 8.97, 100.8, 41.92, and 11.56 mu g<middle dot>g(-1), respectively. Recoveries were in the range of 91.54-116.0%. Repeatability and interday reproducibility expressed as the relative standard deviation (% RSD) was below 5.0%. The contents of macroelements in 6 retail pasteurised milk samples were between 1099.32 and 1348.65 mu g<middle dot>g(-1) (Ca), 914.01 and 1091.21 mu g<middle dot>g(-1) (P), 1362.76 and 1549.74 mu g<middle dot>g(-1) (K), 288.89 and 323.22 mu g<middle dot>g(-1) (Na), and 97.62 and 110.57 mu g<middle dot>g(-1) (Mg). Principal component analysis (PCA) revealed that retail pasteurised milk samples were distinctly separated into four groups on the first two principal components (PCs). The difference in the macroelement content between milk brands might be affected by milk regions.

Details

Title: Determination of Ca, P, K, Na, and Mg in Australian Retail Pasteurised Milk Using Inductively Coupled Plasma Atomic Emission Spectroscopy (ICP OES)
Authors/Creators: Duc Doan Nguyen - Murdoch Univ, Food Futures Inst, Ctr Crop & Food Innovat, Food Sci & Nutr, Murdoch, WA 6150, Australia
Vicky Solah - Murdoch University, School of Medical, Molecular and Forensic Sciences
Suzanne Daubney - Bannister Downs Dairy, Northcliffe, WA 6262, Australia
Saijel Jani - Murdoch Univ, Coll Sci Technol Engn & Math, Sch Math Stat Chem & Phys, Murdoch, WA 6150, Australia
Publication Details: Journal of analytical methods in chemistry, Vol.2024(1), 4417607
Publisher: Wiley
Number of pages: 7
Grant note: AusIndustry Entrepreneurs' Programme, Innovation Connections with Bannister Downs Dairy
Identifiers: 991005701569807891
Murdoch Affiliation: Centre for Crop and Food Innovation; School of Mathematics, Statistics, Chemistry and Physics; School of Medical, Molecular and Forensic Sciences; College of Environmental and Life Sciences; College of Science, Technology, Engineering and Mathematics
Language: English
Resource Type: Journal article

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Citation topics: 2 Chemistry; 2.209 Spectrometry & Separation; 2.209.688 Preconcentration
Web Of Science research areas: Chemistry, Analytical
ESI research areas: Chemistry