Rapid and sensitive determination of Se and heavy metals in foods using electrothermal vaporization inductively coupled plasma mass spectrometry with a novel transportation system
Rapid, sensitive and simultaneous determination of trace multi-elements in various plant food samples such as grain, oilseed, vegetable and tea is always a challenge thus far. In this work, a rapid determination method for Se, Cd, As and Pb in food samples by inductively coupled plasma mass spectrom...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2023-06-01
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| Series: | Frontiers in Nutrition |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fnut.2023.1201801/full |
| _version_ | 1797809920630849536 |
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| author | Guanyu Lan Guanyu Lan Xue Li Jijun Yao Xiaofeng Yu Qinghai Liu Cheng Qiu Xuefei Mao |
| author_facet | Guanyu Lan Guanyu Lan Xue Li Jijun Yao Xiaofeng Yu Qinghai Liu Cheng Qiu Xuefei Mao |
| author_sort | Guanyu Lan |
| collection | DOAJ |
| description | Rapid, sensitive and simultaneous determination of trace multi-elements in various plant food samples such as grain, oilseed, vegetable and tea is always a challenge thus far. In this work, a rapid determination method for Se, Cd, As and Pb in food samples by inductively coupled plasma mass spectrometry (ICP-MS) using slurry sampling electrothermal vaporization (SS-ETV) was developed. To improve the analytical sensitivity and precision as well as eliminate the memory effect, a gas turbulator line and signal delay device (SDD) were for the first time designed for the graphite furnace (GF) ETV coupled with ICP-MS. The signal acquisition parameters of ICP-MS, ashing and vaporization conditions, and the flow rates of carrier gas and gas turbulator were investigated for Se, Cd, As and Pb in food samples. Under the optimized conditions, the limits of determination (LODs) for Se, Cd, As and Pb were 0.5 ng g−1, 0.3 ng g−1, 0.3 ng g−1 and 0.6 ng g−1, respectively; the limits of quantification (LOQs) for Se, Cd, As and Pb were 1.7 ng g−1, 1.0 ng g−1, 1.0 ng g−1 and 1.9 ng g−1, respectively; linearity (R2) in the range of 1 to 4,000 ng g−1 was >0.999 using the standard addition method. This method was used to analyze 5 CRMs including rice, tea and soybeans, and the concentrations detected by this method were within the range of the certified values. The recoveries of Se, Cd, As and Pb in plant food matrices including grain, oilseed, celery, spinach, carrot and tea samples were 86–118% compared to the microwave digestion ICP-MS method; and the relative standard deviations (RSDs) were 1.2–8.9% for real food sample analysis, proving a good precision and accuracy for the simultaneous determination of multi-elements. The analysis time was less than 3 min, slurry preparation time < 5 min without sample digestion process. The proposed direct slurry sampling ICP-MS method is thus suitable for rapid and sensitive determination of Se, Cd, As and Pb in food samples with advantages such as simplicity, green and safety, as well as with a promising application potential in detecting more elements to protect food safety and human health. |
| first_indexed | 2024-03-13T07:00:10Z |
| format | Article |
| id | doaj.art-7b754373b53f481d8cf2b6b0b1824522 |
| institution | Directory Open Access Journal |
| issn | 2296-861X |
| language | English |
| last_indexed | 2024-03-13T07:00:10Z |
| publishDate | 2023-06-01 |
| publisher | Frontiers Media S.A. |
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| spelling | doaj.art-7b754373b53f481d8cf2b6b0b18245222023-06-07T04:27:32ZengFrontiers Media S.A.Frontiers in Nutrition2296-861X2023-06-011010.3389/fnut.2023.12018011201801Rapid and sensitive determination of Se and heavy metals in foods using electrothermal vaporization inductively coupled plasma mass spectrometry with a novel transportation systemGuanyu Lan0Guanyu Lan1Xue Li2Jijun Yao3Xiaofeng Yu4Qinghai Liu5Cheng Qiu6Xuefei Mao7Institute of Agricultural Product Quality Standard and Testing Research, Tibet Academy of Agricultural and Animal Husbandry Sciences, Lhasa, Tibet, ChinaInstitute of Quality Standard and Testing Technology for Agro-Products, Key Laboratory of Agro-food Safety and Quality, Ministry of Agriculture and Rural Affairs, Chinese Academy of Agricultural Sciences, Beijing, ChinaInstitute of Quality Standard and Testing Technology for Agro-Products, Key Laboratory of Agro-food Safety and Quality, Ministry of Agriculture and Rural Affairs, Chinese Academy of Agricultural Sciences, Beijing, ChinaHangzhou Puyu Technology Co. Ltd., Hangzhou, Zhejiang, ChinaHangzhou Puyu Technology Co. Ltd., Hangzhou, Zhejiang, ChinaInstitute of Agricultural Product Quality Standard and Testing Research, Tibet Academy of Agricultural and Animal Husbandry Sciences, Lhasa, Tibet, ChinaInstitute of Agricultural Product Quality Standard and Testing Research, Tibet Academy of Agricultural and Animal Husbandry Sciences, Lhasa, Tibet, ChinaInstitute of Quality Standard and Testing Technology for Agro-Products, Key Laboratory of Agro-food Safety and Quality, Ministry of Agriculture and Rural Affairs, Chinese Academy of Agricultural Sciences, Beijing, ChinaRapid, sensitive and simultaneous determination of trace multi-elements in various plant food samples such as grain, oilseed, vegetable and tea is always a challenge thus far. In this work, a rapid determination method for Se, Cd, As and Pb in food samples by inductively coupled plasma mass spectrometry (ICP-MS) using slurry sampling electrothermal vaporization (SS-ETV) was developed. To improve the analytical sensitivity and precision as well as eliminate the memory effect, a gas turbulator line and signal delay device (SDD) were for the first time designed for the graphite furnace (GF) ETV coupled with ICP-MS. The signal acquisition parameters of ICP-MS, ashing and vaporization conditions, and the flow rates of carrier gas and gas turbulator were investigated for Se, Cd, As and Pb in food samples. Under the optimized conditions, the limits of determination (LODs) for Se, Cd, As and Pb were 0.5 ng g−1, 0.3 ng g−1, 0.3 ng g−1 and 0.6 ng g−1, respectively; the limits of quantification (LOQs) for Se, Cd, As and Pb were 1.7 ng g−1, 1.0 ng g−1, 1.0 ng g−1 and 1.9 ng g−1, respectively; linearity (R2) in the range of 1 to 4,000 ng g−1 was >0.999 using the standard addition method. This method was used to analyze 5 CRMs including rice, tea and soybeans, and the concentrations detected by this method were within the range of the certified values. The recoveries of Se, Cd, As and Pb in plant food matrices including grain, oilseed, celery, spinach, carrot and tea samples were 86–118% compared to the microwave digestion ICP-MS method; and the relative standard deviations (RSDs) were 1.2–8.9% for real food sample analysis, proving a good precision and accuracy for the simultaneous determination of multi-elements. The analysis time was less than 3 min, slurry preparation time < 5 min without sample digestion process. The proposed direct slurry sampling ICP-MS method is thus suitable for rapid and sensitive determination of Se, Cd, As and Pb in food samples with advantages such as simplicity, green and safety, as well as with a promising application potential in detecting more elements to protect food safety and human health.https://www.frontiersin.org/articles/10.3389/fnut.2023.1201801/fullseleniumheavy metalselectrothermal vaporizationslurry samplingsignal delay deviceinductively coupled plasma mass spectrometry |
| spellingShingle | Guanyu Lan Guanyu Lan Xue Li Jijun Yao Xiaofeng Yu Qinghai Liu Cheng Qiu Xuefei Mao Rapid and sensitive determination of Se and heavy metals in foods using electrothermal vaporization inductively coupled plasma mass spectrometry with a novel transportation system Frontiers in Nutrition selenium heavy metals electrothermal vaporization slurry sampling signal delay device inductively coupled plasma mass spectrometry |
| title | Rapid and sensitive determination of Se and heavy metals in foods using electrothermal vaporization inductively coupled plasma mass spectrometry with a novel transportation system |
| title_full | Rapid and sensitive determination of Se and heavy metals in foods using electrothermal vaporization inductively coupled plasma mass spectrometry with a novel transportation system |
| title_fullStr | Rapid and sensitive determination of Se and heavy metals in foods using electrothermal vaporization inductively coupled plasma mass spectrometry with a novel transportation system |
| title_full_unstemmed | Rapid and sensitive determination of Se and heavy metals in foods using electrothermal vaporization inductively coupled plasma mass spectrometry with a novel transportation system |
| title_short | Rapid and sensitive determination of Se and heavy metals in foods using electrothermal vaporization inductively coupled plasma mass spectrometry with a novel transportation system |
| title_sort | rapid and sensitive determination of se and heavy metals in foods using electrothermal vaporization inductively coupled plasma mass spectrometry with a novel transportation system |
| topic | selenium heavy metals electrothermal vaporization slurry sampling signal delay device inductively coupled plasma mass spectrometry |
| url | https://www.frontiersin.org/articles/10.3389/fnut.2023.1201801/full |
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