Flow-through Bulk Optode for Spectrophotometric Determination of Thiocyanate and Its Application to Water and Saliva Analysis
A flow-through spectrophotometric bulk optode for the flow-injectiondetermination of thiocyanate is described. As active constituents, the optode incorporatesthe lipophilized pH indicator 5-octadecanoyloxy-2-(4-nitrophenylazo)phenol andmethyltridodecyl ammonium chloride, dissolved in a plasticized p...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2006-10-01
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| Series: | Sensors |
| Subjects: | |
| Online Access: | http://www.mdpi.com/1424-8220/6/10/1224/ |
| _version_ | 1818037452791611392 |
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| author | José Fernández Isabel Albero Concepción Sánchez-Pedreño JoaquÃÂn A. Ortuño Soledad GarcÃÂa |
| author_facet | José Fernández Isabel Albero Concepción Sánchez-Pedreño JoaquÃÂn A. Ortuño Soledad GarcÃÂa |
| author_sort | José Fernández |
| collection | DOAJ |
| description | A flow-through spectrophotometric bulk optode for the flow-injectiondetermination of thiocyanate is described. As active constituents, the optode incorporatesthe lipophilized pH indicator 5-octadecanoyloxy-2-(4-nitrophenylazo)phenol andmethyltridodecyl ammonium chloride, dissolved in a plasticized poly(vinyl)chloridemembrane entrapped in a cellulose support. The optode is applied, in conjunction with theflow injection technique, to the determination of thiocyanate at pH 7.5 (TRIS/H2SO4). Thesensor is readily regenerated with a 10-2 M NaOH carrier solution. The analyticalcharacteristics of this optode with respect to thiocyanate response time, dynamicmeasurement range, reproducibility and selectivity are discussed. The proposed FI methodis applied to the determination of thiocyanate in waters from different sources and in humansaliva samples in order to distinguish between smokers and non-smokers. |
| first_indexed | 2024-12-10T07:27:04Z |
| format | Article |
| id | doaj.art-0edffab714ad4ca6a113da02e7b98933 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-12-10T07:27:04Z |
| publishDate | 2006-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-0edffab714ad4ca6a113da02e7b989332022-12-22T01:57:41ZengMDPI AGSensors1424-82202006-10-016101224123310.3390/s6101224Flow-through Bulk Optode for Spectrophotometric Determination of Thiocyanate and Its Application to Water and Saliva AnalysisJosé FernándezIsabel AlberoConcepción Sánchez-PedreñoJoaquÃÂn A. OrtuñoSoledad GarcÃÂaA flow-through spectrophotometric bulk optode for the flow-injectiondetermination of thiocyanate is described. As active constituents, the optode incorporatesthe lipophilized pH indicator 5-octadecanoyloxy-2-(4-nitrophenylazo)phenol andmethyltridodecyl ammonium chloride, dissolved in a plasticized poly(vinyl)chloridemembrane entrapped in a cellulose support. The optode is applied, in conjunction with theflow injection technique, to the determination of thiocyanate at pH 7.5 (TRIS/H2SO4). Thesensor is readily regenerated with a 10-2 M NaOH carrier solution. The analyticalcharacteristics of this optode with respect to thiocyanate response time, dynamicmeasurement range, reproducibility and selectivity are discussed. The proposed FI methodis applied to the determination of thiocyanate in waters from different sources and in humansaliva samples in order to distinguish between smokers and non-smokers.http://www.mdpi.com/1424-8220/6/10/1224/Flow-through optodespectrophotometrythiocyanatewatersaliva. |
| spellingShingle | José Fernández Isabel Albero Concepción Sánchez-Pedreño JoaquÃÂn A. Ortuño Soledad GarcÃÂa Flow-through Bulk Optode for Spectrophotometric Determination of Thiocyanate and Its Application to Water and Saliva Analysis Sensors Flow-through optode spectrophotometry thiocyanate water saliva. |
| title | Flow-through Bulk Optode for Spectrophotometric Determination of Thiocyanate and Its Application to Water and Saliva Analysis |
| title_full | Flow-through Bulk Optode for Spectrophotometric Determination of Thiocyanate and Its Application to Water and Saliva Analysis |
| title_fullStr | Flow-through Bulk Optode for Spectrophotometric Determination of Thiocyanate and Its Application to Water and Saliva Analysis |
| title_full_unstemmed | Flow-through Bulk Optode for Spectrophotometric Determination of Thiocyanate and Its Application to Water and Saliva Analysis |
| title_short | Flow-through Bulk Optode for Spectrophotometric Determination of Thiocyanate and Its Application to Water and Saliva Analysis |
| title_sort | flow through bulk optode for spectrophotometric determination of thiocyanate and its application to water and saliva analysis |
| topic | Flow-through optode spectrophotometry thiocyanate water saliva. |
| url | http://www.mdpi.com/1424-8220/6/10/1224/ |
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