Exploiting gas diffusion for non-invasive sampling in flow analysis: determination of ethanol in alcoholic beverages
Fuente:
Redalyc
Enregistré dans:
| Auteur principal: | |
|---|---|
| Format: | Artículo científico |
| Langue: | en |
| Publié: |
Academia Brasileira de Ciências
2006
|
| Sujets: | |
| Accès en ligne: | |
| Tags: |
Ajouter un tag
Pas de tags, Soyez le premier à ajouter un tag!
|
| _version_ | 1876462115031613440 |
|---|---|
| author | Paula C. A.G. Pinto |
| author_facet | Paula C. A.G. Pinto |
| contents | Exploiting gas diffusion for non-invasive sampling in flow analysis: determination of ethanol in alcoholic beverages Paula C. A.G. Pinto Maria Lucia M.E.S. Saraiva José L. F.C. Lima Simone Vicente Elias A. G. Zagatto Eduardo P. Borges Multidisciplinaria (Ciencias Naturales y Exactas) Flow semi gas diffusion injection analysis permeable membrane A tubular gas diffusion PTFE membrane is exploited for non-invasive sampling in flow analysis, aimingto develop an improved spectrophotometric determination of ethanol in alcoholic beverages. The probe isimmersed into the sample, allowing ethanol to diffuse through the membrane. It is collected into the acceptorstream (acidic dichromate solution), leading to formation of Cr(III), monitored at 600 nm. The analyticalcurve is linear up to 50% (v/v) ethanol, baseline drift is < 0.005 absorbance during four working-hours, andsample throughput is 30 h−1, meaning 0.6 mmol K2Cr2O7 per determination. Results are precise (r.s.d.< 2%) and in agreement with an official procedure. 2006 artículo científico 0001-3765 https://www.redalyc.org/articulo.oa?id=32778104 en http://www.redalyc.org/revista.oa?id=327 Anais da Academia Brasileira de Ciências application/pdf Academia Brasileira de Ciências Anais da Academia Brasileira de Ciências (Brasil) Num.1 Vol.78 |
| format | Artículo científico |
| id | redalyc_32778104 |
| institution | Redalyc |
| language | en |
| publishDate | 2006 |
| publisher | Academia Brasileira de Ciências |
| spellingShingle | Exploiting gas diffusion for non-invasive sampling in flow analysis: determination of ethanol in alcoholic beverages Paula C. A.G. Pinto Multidisciplinaria (Ciencias Naturales y Exactas) Flow semi gas diffusion injection analysis permeable membrane Exploiting gas diffusion for non-invasive sampling in flow analysis: determination of ethanol in alcoholic beverages Paula C. A.G. Pinto Maria Lucia M.E.S. Saraiva José L. F.C. Lima Simone Vicente Elias A. G. Zagatto Eduardo P. Borges Multidisciplinaria (Ciencias Naturales y Exactas) Flow semi gas diffusion injection analysis permeable membrane A tubular gas diffusion PTFE membrane is exploited for non-invasive sampling in flow analysis, aimingto develop an improved spectrophotometric determination of ethanol in alcoholic beverages. The probe isimmersed into the sample, allowing ethanol to diffuse through the membrane. It is collected into the acceptorstream (acidic dichromate solution), leading to formation of Cr(III), monitored at 600 nm. The analyticalcurve is linear up to 50% (v/v) ethanol, baseline drift is < 0.005 absorbance during four working-hours, andsample throughput is 30 h−1, meaning 0.6 mmol K2Cr2O7 per determination. Results are precise (r.s.d.< 2%) and in agreement with an official procedure. 2006 artículo científico 0001-3765 https://www.redalyc.org/articulo.oa?id=32778104 en http://www.redalyc.org/revista.oa?id=327 Anais da Academia Brasileira de Ciências application/pdf Academia Brasileira de Ciências Anais da Academia Brasileira de Ciências (Brasil) Num.1 Vol.78 |
| title | Exploiting gas diffusion for non-invasive sampling in flow analysis: determination of ethanol in alcoholic beverages |
| topic | Multidisciplinaria (Ciencias Naturales y Exactas) Flow semi gas diffusion injection analysis permeable membrane |
| url | https://www.redalyc.org/articulo.oa?id=32778104 |