Analytical features of microwave plasma-atomic emission spectrometry (MP-AES) for the quantitation of manganese (Mn) in wild grape (Vitis coignetiae) red wines: Comparison with inductively coupled plasma-optical emission spectrometry (ICP-OES)

•A simple and cheap MP-AES was developed and validated for the quantitation of Mn in wine.•The analytical features for the MP-AES were greatly different with those of ICP-OES.•Significant matrix effect in wine sample matrices was observed with MP-AES, but not with ICP-OES.•The low matrix tolerance o...

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Bibliographic Details
Published in:Food chemistry 2019-02, Vol.274, p.20-25
Main Authors: Jung, Mun Yhung, Kang, Ju Hui, Choi, Yun Seo, Lee, Da Young, Lee, Ju Yeon, Park, Ji Su
Format: Article
Language:English
Subjects:
air
cost effectiveness
Cross validation
Food Analysis - methods
food chemistry
Food Contamination - analysis
Gases
grapes
Korean wine
Manganese
Manganese - analysis
Meoru
Microwave plasma-atomic emission spectroscopy
Microwaves
Nitrogen
Reproducibility of Results
Republic of Korea
Sensitivity and Specificity
Spectrophotometry, Atomic - methods
spectroscopy
Validation
Vitis
Vitis coignetiae
Wine - analysis
wines
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Summary:•A simple and cheap MP-AES was developed and validated for the quantitation of Mn in wine.•The analytical features for the MP-AES were greatly different with those of ICP-OES.•Significant matrix effect in wine sample matrices was observed with MP-AES, but not with ICP-OES.•The low matrix tolerance of MP-AES was overcome by a standard addition method.•The contents of Mn in wild grape (Vitis coignetiae) wines are reported for the first time. The analytical features of MP-AES for the determination of Mn in wine were studied as compared with ICP-OES. The optimum spectral line (403.076 nm) of MP-AES was different from that (259.373 nm) of ICP-OES. Significant matrix effect was observed with MP-AES, but not with ICP-OES. A simple and cost-effective MP-AES for the quantitation of Mn in wild grape (Vitis coignetiae) red wines were developed and validated. A standard addition method was used to compensate the matrix effects. The sensitivity of MP-AES was comparable to that of ICP-OES. MP-AES was sensitive, precise, accurate and reliable. The Mn concentration in the wild grape wines was in the range of 502–3627 μg L−1. MP-AES had a distinct drawback of low matrix tolerance. However, MP-AES had a clear advantage of the low running cost due to the use of nitrogen gas generated from air with a nitrogen generator.
ISSN:0308-8146
1873-7072
DOI:10.1016/j.foodchem.2018.08.114