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A cost-effective microfluidic device for determination of biodiesel content in diesel blends
| dc.contributor.author | Soares, Samara | |
| dc.contributor.author | Ramos Lorente, Celia Esperanza | |
| dc.contributor.author | Rocha, Fabio R.P. | |
| dc.contributor.author | Erenas Rodríguez, Miguel María | |
| dc.contributor.author | Orbe Payá, Ignacio De | |
| dc.contributor.author | López Ruiz, Nuria | |
| dc.contributor.author | Capitán Vallvey, Luis Fermín | |
| dc.date.accessioned | 2023-06-12T09:11:58Z | |
| dc.date.available | 2023-06-12T09:11:58Z | |
| dc.date.issued | 2023-05-27 | |
| dc.identifier.citation | Sensors & Actuators: B. Chemical 390 (2023) 134033 | es_ES |
| dc.identifier.uri | https://hdl.handle.net/10481/82334 | |
| dc.description.abstract | The increasing production and extensive use of biodiesel in the latest years call for the development of fast and cost-effective procedures for point-of-care analysis. One of the main quality parameters is the biodiesel content in diesel blends, which needs to conform to regional legislations. In this work, a microfluidic device exploiting chemical derivatization of alkyl esters and detection by smartphone-based digital-image colorimetry was developed. It was designed to ensure proper experimental conditions for chemical derivatization, including re- agent release, and photometric measurements. Analytes reacted with alkaline hydroxylamine yielding the cor- responding alkyl hydroxamates, measured as colored Fe(III) complexes. Analytical response was based on the measurement of the G (green) channel from RGB color system. By taking methyl linoleate as a model compound, a linear response was obtained from 0.1% to 0.6%(v/v) (Analytical signal = 69.6 +2.1 C, r = 0.999), coefficient of variation (n = 10) of 4.0% and limit of detection (99.7% confidence) of 0.04%(v/v). Procedure consumes 1.2 µL of sample, 230 µg of hydroxylamine, 480 µg of NaOH, 14 µg of Fe(III) and equivalent to 1.2 µL of 69%(v/v) HNO3. Accurate results were achieved in relation to the MIR reference method, with agreement at the 95% confidence level | es_ES |
| dc.description.sponsorship | The authors gratefully acknowledge the financial support from Fundaç˜ao de Amparo `a Pesquisa do Estado de S˜ao Paulo FAPESP (proc. 2021/12242–5 and 2018/07687–5). and the support from the Spanish “Ministerio de Economía y Competitividad” (Project PID2019–103938RB- I00) and Junta de Andalucía (Projects B-FQM-243-UGR18 and P18-RT- 2961). | es_ES |
| dc.language.iso | eng | es_ES |
| dc.rights | Atribución 4.0 Internacional | * |
| dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | * |
| dc.subject | Microfluidics | es_ES |
| dc.subject | Digital image colorimetry | es_ES |
| dc.subject | Quality control | es_ES |
| dc.subject | Alkyl esters content | es_ES |
| dc.subject | Renewable fuel | es_ES |
| dc.subject | Diesel blends | es_ES |
| dc.title | A cost-effective microfluidic device for determination of biodiesel content in diesel blends | es_ES |
| dc.type | journal article | es_ES |
| dc.rights.accessRights | open access | es_ES |
| dc.identifier.doi | 10.1016/j.snb.2023.134033 | |
| dc.type.hasVersion | VoR | es_ES |
