DC Field | Value | Language |
---|---|---|
dc.contributor.author | Cho, Hyeonsu | - |
dc.contributor.author | Kim, Kihyun | - |
dc.contributor.author | Kwak, Hyeon-Tak | - |
dc.contributor.author | Lee, Seungho | - |
dc.contributor.author | Meyyappan, M. | - |
dc.contributor.author | Baek, Chang-Ki | - |
dc.date.accessioned | 2021-01-20T07:50:45Z | - |
dc.date.available | 2021-01-20T07:50:45Z | - |
dc.date.created | 2020-03-18 | - |
dc.date.issued | 2020-02 | - |
dc.identifier.issn | 1572-6657 | - |
dc.identifier.uri | https://oasis.postech.ac.kr/handle/2014.oak/104891 | - |
dc.description.abstract | Polycrystalline (poly) lanthanum fluoride (LaF3) Electrolyte-Insulator-Semiconductor (EIS) sensors can serve as a promising portable sensor platform for monitoring fluoride ion (F-) concentration due to their small size, fast response and simple fabrication method. The key to successful implementation is to consider and understand the effects of the measurement environment on the F- detection performance of actual analyte samples. Here, we propose a pathway for accurate F- analysis in tap water by using low concentration of the buffer solution. The F- sensing characteristics of the sensors are extensively investigated by varying the concentration of the total ionic strength adjustment buffer solution (TISAB). The sensors exhibit a high sensitivity of 50.2 mV/pF, a low limit of detection of 1.4 ppb, a small hysteresis voltage of 0.9 mV and a small drift rate of 0.60 mV/h. in the 100-times diluted TISAB (0.01 x TISAB). In addition, the poly LaF3 EIS sensors show highly selective detection of F(- )over others. When F(- )analysis of tap water is compared to a commercial F- ion selective electrode, the result is only different by 6.1% for the 0.01 x TISAB compared to 11.2% for 1 x TISAB. Thus, the dilution of TISAB can provide better measurement conditions for highly accurate F- analysis in actual sensor applications. (C) 2020 Elsevier B.V. All rights reserved. | - |
dc.language | English | - |
dc.publisher | ELSEVIER SCIENCE SA | - |
dc.relation.isPartOf | JOURNAL OF ELECTROANALYTICAL CHEMISTRY | - |
dc.title | Buffer solution optimization for accurate fluoride ion detection in tap water | - |
dc.type | Article | - |
dc.identifier.doi | 10.1016/j.jelechem.2020.113837 | - |
dc.type.rims | ART | - |
dc.identifier.bibliographicCitation | JOURNAL OF ELECTROANALYTICAL CHEMISTRY, v.858 | - |
dc.identifier.wosid | 000515205600050 | - |
dc.citation.title | JOURNAL OF ELECTROANALYTICAL CHEMISTRY | - |
dc.citation.volume | 858 | - |
dc.contributor.affiliatedAuthor | Baek, Chang-Ki | - |
dc.identifier.scopusid | 2-s2.0-85077746106 | - |
dc.description.journalClass | 1 | - |
dc.description.journalClass | 1 | - |
dc.description.isOpenAccess | N | - |
dc.type.docType | Article | - |
dc.subject.keywordPlus | PHYSICAL MODEL | - |
dc.subject.keywordPlus | SENSOR | - |
dc.subject.keywordPlus | LAF3 | - |
dc.subject.keywordPlus | ELECTROLYTE-INSULATOR-SEMICONDUCTOR | - |
dc.subject.keywordAuthor | Electrolyte-insulator-semiconductor (EIS) sensor | - |
dc.subject.keywordAuthor | Buffer solution | - |
dc.subject.keywordAuthor | Lanthanum fluoride (LaF3) | - |
dc.subject.keywordAuthor | Fluoride ion sensor | - |
dc.subject.keywordAuthor | Sensitivity | - |
dc.subject.keywordAuthor | Limit of detection | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Analytical | - |
dc.relation.journalWebOfScienceCategory | Electrochemistry | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.relation.journalResearchArea | Electrochemistry | - |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.
library@postech.ac.kr Tel: 054-279-2548
Copyrights © by 2017 Pohang University of Science ad Technology All right reserved.