Fluorescence sensor based on glutathione capped CdTe QDs for detection of Cr3+ ions in vitamins
In this work, glutathione capped CdTe QDs (GSH-QDs) were prepared through a one-pot process and found to be quenched by Cr3+, Ag+ and Cu2+ ions. Cr3+ and chromium (III) picolinate could be quantitatively measured after masking Cu2+ and Ag+ ions by sulfide. Under optimal conditions, linear quenching...
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| Format: | Article |
| Language: | English |
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Tsinghua University Press
2018-03-01
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| Series: | Food Science and Human Wellness |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2213453017301404 |
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| author | Chi-Fang Peng Ying-Ying Zhang Zhi-Juan Qian Zheng-Jun Xie |
| author_facet | Chi-Fang Peng Ying-Ying Zhang Zhi-Juan Qian Zheng-Jun Xie |
| author_sort | Chi-Fang Peng |
| collection | DOAJ |
| description | In this work, glutathione capped CdTe QDs (GSH-QDs) were prepared through a one-pot process and found to be quenched by Cr3+, Ag+ and Cu2+ ions. Cr3+ and chromium (III) picolinate could be quantitatively measured after masking Cu2+ and Ag+ ions by sulfide. Under optimal conditions, linear quenching was observed for Cr3+ in the ranges of 0–2.0 μM and the limit of detection was 3.0 nM. The recoveries for Cr3+ in vitamin supplements obtained were from 92.5% to 106%. The determination results of chromium (III) picolinate in vitamin supplement samples were compared to that obtained using flame atomic absorption spectrometry (FAAS) method, and the result showed good reliability. Keywords: CdTe QDs, Fluorescence, Chromium ions, Vitamin supplements |
| format | Article |
| id | doaj-art-b4154b60d03848988ba2ed4bfb1a2bbd |
| institution | Kabale University |
| issn | 2213-4530 |
| language | English |
| publishDate | 2018-03-01 |
| publisher | Tsinghua University Press |
| record_format | Article |
| series | Food Science and Human Wellness |
| spelling | doaj-art-b4154b60d03848988ba2ed4bfb1a2bbd2025-02-03T05:18:54ZengTsinghua University PressFood Science and Human Wellness2213-45302018-03-01717176Fluorescence sensor based on glutathione capped CdTe QDs for detection of Cr3+ ions in vitaminsChi-Fang Peng0Ying-Ying Zhang1Zhi-Juan Qian2Zheng-Jun Xie3State Key Lab of Food Science and Technology, Jiangnan University, Wuxi 214122, PR China; School of Food Science and Technology, Jiangnan University, Wuxi 214122, PR China; National Engineering Research Center for Functional Food, Jiangnan University, Wuxi 214122, PR China; Corresponding author at: State Key Lab of Food Science and Technology, Jiangnan University, Wuxi 214122, PR China.State Key Lab of Food Science and Technology, Jiangnan University, Wuxi 214122, PR China; School of Food Science and Technology, Jiangnan University, Wuxi 214122, PR ChinaYangzhou Entry-Exit Inspection and Quarantine Bureau, Yangzhou 225000, PR ChinaState Key Lab of Food Science and Technology, Jiangnan University, Wuxi 214122, PR China; School of Food Science and Technology, Jiangnan University, Wuxi 214122, PR ChinaIn this work, glutathione capped CdTe QDs (GSH-QDs) were prepared through a one-pot process and found to be quenched by Cr3+, Ag+ and Cu2+ ions. Cr3+ and chromium (III) picolinate could be quantitatively measured after masking Cu2+ and Ag+ ions by sulfide. Under optimal conditions, linear quenching was observed for Cr3+ in the ranges of 0–2.0 μM and the limit of detection was 3.0 nM. The recoveries for Cr3+ in vitamin supplements obtained were from 92.5% to 106%. The determination results of chromium (III) picolinate in vitamin supplement samples were compared to that obtained using flame atomic absorption spectrometry (FAAS) method, and the result showed good reliability. Keywords: CdTe QDs, Fluorescence, Chromium ions, Vitamin supplementshttp://www.sciencedirect.com/science/article/pii/S2213453017301404 |
| spellingShingle | Chi-Fang Peng Ying-Ying Zhang Zhi-Juan Qian Zheng-Jun Xie Fluorescence sensor based on glutathione capped CdTe QDs for detection of Cr3+ ions in vitamins Food Science and Human Wellness |
| title | Fluorescence sensor based on glutathione capped CdTe QDs for detection of Cr3+ ions in vitamins |
| title_full | Fluorescence sensor based on glutathione capped CdTe QDs for detection of Cr3+ ions in vitamins |
| title_fullStr | Fluorescence sensor based on glutathione capped CdTe QDs for detection of Cr3+ ions in vitamins |
| title_full_unstemmed | Fluorescence sensor based on glutathione capped CdTe QDs for detection of Cr3+ ions in vitamins |
| title_short | Fluorescence sensor based on glutathione capped CdTe QDs for detection of Cr3+ ions in vitamins |
| title_sort | fluorescence sensor based on glutathione capped cdte qds for detection of cr3 ions in vitamins |
| url | http://www.sciencedirect.com/science/article/pii/S2213453017301404 |
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