3D-Printed, TiO2 NP–Incorporated Minicolumn Coupled with ICP-MS for Speciation of Inorganic As, Cr, and Se in High-Salt-Content Samples
| Autor: | Chen, Wei-Cheng, 陳韋誠 |
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| Rok vydání: | 2018 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 106 To extend the applicability of solid phase extraction devices manufactured by 3D printing technologies, a stereolithographic 3D printer and the resin incorporated with titanium dioxide nanoparticles (TiO2 NPs) were utilized to fabricate a demountable minicolunm with the TiO2 NP–incorporated packing as a sample pretreatment device to selectively extract inorganic Cr, As, and Se species in high-salt-content samples and facilitate their analyses when hyphenating to an inductively coupled plasma mass spectrometer. After method’s optimization, the proposed automatic system can enable highly sensitive determination of Cr, As, and Se species with the method’s detection limits as low as 0.053–0.083 µg L-1 for Cr, 0.004–0.033 µg L-1 for As, and 0.061–0.128 µg L-1 for Se, respectively. To confirm the method’s analytical reliability, the analyses of the reference materials 1643f, SLEW-3, CASS-4, and 2670a as well as the spike analyses of the collected water samples and human urine were performed. Our results suggested that the developed 3D-printed minicolumn is practically useful for speciation of these elements in high-salt-content samples, and to adequately incorporate active nanomaterials into the raw printing resins can enable 3DP technologies not only to fabricate functionalized devices for more diverse sample pretreatment applications but also to continuously contribute to the future development of multifunctional devices for analytical sciences. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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