Academic Journal
Design and development of lab-on-a-centrifuge based on liquid-core waveguide enhancement technology for colorimetric detection of soil Cr(VI) from sample-to-answer.
| Τίτλος: | Design and development of lab-on-a-centrifuge based on liquid-core waveguide enhancement technology for colorimetric detection of soil Cr(VI) from sample-to-answer. |
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| Συγγραφείς: | Mu B; State Key Laboratory for Quality and Safety of Agro-Products, Institute of Quality Standards and Testing Technology for Agro-Products, Chinese Academy of Agricultural Sciences, Beijing, 100081, China., Na X; Beijing Ability Technology Company, Limited, Beijing, 100081, China., Shi Z; Beijing Ability Technology Company, Limited, Beijing, 100081, China., Liu Z; State Key Laboratory for Quality and Safety of Agro-Products, Institute of Quality Standards and Testing Technology for Agro-Products, Chinese Academy of Agricultural Sciences, Beijing, 100081, China., Liu J; State Key Laboratory for Quality and Safety of Agro-Products, Institute of Quality Standards and Testing Technology for Agro-Products, Chinese Academy of Agricultural Sciences, Beijing, 100081, China; Beijing Ability Technology Company, Limited, Beijing, 100081, China. Electronic address: ljx2117@gmail.com. |
| Πηγή: | Talanta [Talanta] 2026 Aug 01; Vol. 305, pp. 129673. Date of Electronic Publication: 2026 Mar 16. |
| Τύπος έκδοσης: | Journal Article |
| Γλώσσα: | English |
| Στοιχεία περιοδικού: | Publisher: Elsevier Country of Publication: Netherlands NLM ID: 2984816R Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1873-3573 (Electronic) Linking ISSN: 00399140 NLM ISO Abbreviation: Talanta Subsets: MEDLINE |
| Imprint Name(s): | Publication: Amsterdam : Elsevier Original Publication: Oxford : Pergamon Press |
| Ιατρικοί όροι (MeSH): | Chromium*/analysis , Colorimetry*/methods , Colorimetry*/instrumentation , Soil Pollutants*/analysis , Soil*/chemistry , Environmental Monitoring*/methods , Environmental Monitoring*/instrumentation, Centrifugation/instrumentation ; Centrifugation/methods ; Limit of Detection ; Equipment Design |
| Περίληψη: | Rapid and sensitive detection of Cr(VI) in soil is crucial for environmental monitoring and human health risk assessment. Portable, highly integrated detection devices have widely demand for on-site Cr(VI) analysis. In this work, a highly sensitive detection system based on a centrifugal liquid-core waveguide (LCW) was successfully designed. Driven by centrifugal force, the system achieved the entire process automation, including filtration of soil Cr(VI) extracts, sample introduction, colorimetric reaction, signal detection, and waste liquid discharge. A Teflon AF 2400 LCW was used as the long optical path sample cell to increase sensitivity, while centrifugal force was used to remove air bubbles from the detection fluid path, significantly enhancing detection stability for 6.75 times. A π-shaped detection liquid structure was designed to avoid the use of pumps and valves, minimizing dead volume. Innovatively, a rotation maximum detection method was used to reduce measurement errors with continuous operation. After optimizing the operating conditions, the detection of a single sample could be completed in 10 min (excluding extraction time). The system achieved a limit of detection (LOD) of 3 μg/L for water Cr(VI) and a linear range from 10 to 150 μg/L (R2 = 0.9987). The theoretical LOD of soil Cr(VI) is 0.3 mg/kg. The reliability and practicality of the system were confirmed through the accurate analysis of certified reference materials and real soil samples. This work provides a precise solution for the on-site, rapid, and highly sensitive quantification of Cr(VI) in soil. (Copyright © 2026 Elsevier B.V. All rights reserved.) |
| Competing Interests: | Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. |
| Σχόλια: | Erratum in: Talanta. 2026 Jun 22:130177. doi: 10.1016/j.talanta.2026.130177.. (PMID: 42331667) |
| Contributed Indexing: | Keywords: Automated sample processing; Colorimetric detection; Lab-on-a-centrifuge; Liquid-core waveguide; On-site Cr(VI) analysis |
| Substance Nomenclature: | 0R0008Q3JB (Chromium) 0 (Soil Pollutants) 18540-29-9 (chromium hexavalent ion) 0 (Soil) |
| Entry Date(s): | Date Created: 20260318 Date Completed: 20260711 Latest Revision: 20260711 |
| Update Code: | 20260711 |
| DOI: | 10.1016/j.talanta.2026.129673 |
| PMID: | 41850195 |
| Βάση Δεδομένων: | MEDLINE |
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