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Buchumschlag von Rapid determination of 15 metallic elements in 2 kinds of coix seeds by inductively coupled plasma‐mass spectrometry after closed‐vessel microwave digestion
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Rapid determination of 15 metallic elements in 2 kinds of coix seeds by inductively coupled plasma‐mass spectrometry after closed‐vessel microwave digestion

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Zeitschriftentitel: Journal of Food Process Engineering
Personen und Körperschaften: Zhang, Lei, Nie, Xu Yuan, Le, Tao
In: Journal of Food Process Engineering, 40, 2017, 5
Medientyp: E-Article
Sprache: Englisch
veröffentlicht:
Wiley
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Zusammenfassung: <jats:title>Abstract</jats:title><jats:sec><jats:label /><jats:p>This paper presents an optimal method and verification process for measuring contents of 15 metal elements (boron, magnesium, aluminum, calcium, chromium, manganese, iron, cobalt, nickel, copper, zinc, cadmium, tin, antimony, and lead) in two kinds of <jats:italic>coix</jats:italic> seeds with microwave digestion‐inductively coupled plasma‐mass spectrometry. The results showed that microwave digestion‐inductively coupled plasma‐mass spectrometry was a simple and convenient method, which can accurately determine contents of 15 metal elements in <jats:italic>coix</jats:italic> seed, with detection limit ranging within 0.0016–7.02 mg/L, and recovery rate varying within 96.00–104.87%. National primary standard substance‐green onions (GBW10049 GSB‐27) were adopted to verify accuracy and precision of such method. The two tested <jats:italic>coix</jats:italic> seeds (Xingren smaller <jats:italic>coix</jats:italic> seed and Yunnan bigger <jats:italic>coix</jats:italic> seed) both contain Mn, Zn, Ca, Mg, Fe in high content, wherein the Xingren smaller <jats:italic>coix</jats:italic> seed is richer in Al, Cr, Ni, Cu, and Mg as compared to Yunnan bigger <jats:italic>coix</jats:italic> seed. Contents of heavy metals such as Ni, Cr, Pb, Cd, Sn, and Sb are in line with GB 2762‐2012 of “limits of contaminants in foods.” This method which can simultaneously determining 15 essential and nonessential elements in <jats:italic>coix</jats:italic> seed enjoys an acceptable analytical performance and is applicable for routine laboratory testing.</jats:p></jats:sec><jats:sec><jats:title>Practical applications</jats:title><jats:p>This paper studies a new method for simultaneous analysis and detection of 15 metal elements in <jats:italic>coix</jats:italic> seed with microwave digestion‐inductively coupled plasma‐mass spectrometry. The method features rapid analysis speed and wide linear range. After one‐time sample digestion, 15 elements in <jats:italic>coix</jats:italic> seed can be determined simultaneously with high accuracy and sensitivity.</jats:p></jats:sec>
ISSN: 0145-8876
1745-4530
DOI: 10.1111/jfpe.12528