{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,16]],"date-time":"2026-03-16T17:13:22Z","timestamp":1773681202305,"version":"3.50.1"},"reference-count":23,"publisher":"FapUNIFESP (SciELO)","issue":"1","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["An. Acad. Bras. Ci\u00eanc."],"published-print":{"date-parts":[[2006,3]]},"abstract":"<jats:p>A tubular gas diffusion PTFE membrane is exploited for non-invasive sampling in flow analysis, aiming to develop an improved spectrophotometric determination of ethanol in alcoholic beverages. The probe is immersed into the sample, allowing ethanol to diffuse through the membrane. It is collected into the acceptor stream (acidic dichromate solution), leading to formation of Cr(III), monitored at 600 nm. The analytical curve is linear up to 50% (v\/v) ethanol, baseline drift is &lt; 0.005 absorbance during four working-hours, and sample throughput is 30 h-1, meaning 0.6 mmol K2Cr2O7 per determination. Results are precise (r.s.d.&lt; 2%) and in agreement with an official procedure.<\/jats:p>","DOI":"10.1590\/s0001-37652006000100004","type":"journal-article","created":{"date-parts":[[2006,4,19]],"date-time":"2006-04-19T13:33:25Z","timestamp":1145453605000},"page":"23-29","source":"Crossref","is-referenced-by-count":13,"title":["Exploiting gas diffusion for non-invasive sampling in flow analysis: determination of ethanol in alcoholic beverages"],"prefix":"10.1590","volume":"78","author":[{"given":"Simone","family":"Vicente","sequence":"first","affiliation":[{"name":"Universidade de S\u00e3o Paulo, Brasil"}]},{"given":"Elias A.G.","family":"Zagatto","sequence":"additional","affiliation":[{"name":"Universidade de S\u00e3o Paulo, Brasil"}]},{"given":"Paula C.A.G.","family":"Pinto","sequence":"additional","affiliation":[{"name":"Universidade de S\u00e3o Paulo, Brasil"}]},{"given":"Maria Lucia M.E.S.","family":"Saraiva","sequence":"additional","affiliation":[{"name":"Universidade de S\u00e3o Paulo, Brasil"}]},{"given":"Jos\u00e9 L.F.C.","family":"Lima","sequence":"additional","affiliation":[{"name":"Universidade de S\u00e3o Paulo, Brasil"}]},{"given":"Eduardo P.","family":"Borges","sequence":"additional","affiliation":[{"name":"Universidade de S\u00e3o Paulo, Brasil"}]}],"member":"530","reference":[{"key":"ref1","doi-asserted-by":"crossref","first-page":"215","DOI":"10.1016\/0021-9673(92)85384-6","article-title":"Determination of carboxylic acids, sugars, glycerol and ethanol in wine and grape must by ion-exchange high-performance liquid chromatography with refractive index detection","volume":"590","author":"CALLUL M","year":"1992","journal-title":"J Cromatogr A"},{"key":"ref2","doi-asserted-by":"crossref","first-page":"160","DOI":"10.5344\/ajev.1968.19.3.160","article-title":"Spectrophotometric determination of ethanol in wine","volume":"19","author":"CAPUTI AJR","year":"1968","journal-title":"Am J Enol Vitic"},{"key":"ref3","series-title":"Official methods of analysis of AOAC Int","first-page":"1","volume":"II","author":"CUNNIFF P","year":"1995","edition":"16"},{"key":"ref4","series-title":"Flow injection separation and preconcentration","author":"FANG Z","year":"1993"},{"key":"ref5","doi-asserted-by":"crossref","first-page":"920","DOI":"10.1093\/jaoac\/87.4.920","article-title":"Automatic procedure for the determination of ethanol in wine exploiting multicommutation and enzymatic reaction with detection by chemiluminescence","volume":"87","author":"FERNANDEZ EN","year":"2004","journal-title":"J AOAC Int","ISSN":"https:\/\/id.crossref.org\/issn\/1060-3271","issn-type":"print"},{"key":"ref6","doi-asserted-by":"crossref","first-page":"376","DOI":"10.1098\/rspa.1923.0116","article-title":"A method of measuring the velocity of very rapid chemical reactions","volume":"104","author":"HARTRIDGE H","year":"1923","journal-title":"Proc Roy Soc A"},{"key":"ref7","series-title":"The alcohol textbook","author":"JACQUES KA","year":"2003","edition":"4"},{"key":"ref8","doi-asserted-by":"crossref","first-page":"29","DOI":"10.1016\/S0003-2670(01)85046-7","article-title":"Flow injection spectrophotometric determination of boron in plant material with Azomethine-H","volume":"125","author":"KRUG FJ","year":"1981","journal-title":"Anal Chim Acta","ISSN":"https:\/\/id.crossref.org\/issn\/0003-2670","issn-type":"print"},{"key":"ref9","doi-asserted-by":"crossref","first-page":"323","DOI":"10.1080\/10408349208051649","article-title":"Gas diffusion\/permeation flow injection analysis. 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