{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,19]],"date-time":"2025-10-19T18:26:49Z","timestamp":1760898409881,"version":"3.37.3"},"reference-count":25,"publisher":"Wiley","license":[{"start":{"date-parts":[[2017,1,1]],"date-time":"2017-01-01T00:00:00Z","timestamp":1483228800000},"content-version":"unspecified","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100005888","name":"Uniwersytet Medyczny w Lodzi","doi-asserted-by":"publisher","award":["503\/3-016-03\/503-31-001"],"award-info":[{"award-number":["503\/3-016-03\/503-31-001"]}],"id":[{"id":"10.13039\/501100005888","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Journal of Analytical Methods in Chemistry"],"published-print":{"date-parts":[[2017]]},"abstract":"<jats:p>Selected synthetic food dyes (tartrazine, Ponceau 4R, Brilliant Blue, orange yellow, and azorubine) were isolated from liquid preparations (mouthwashes and beverages) by Solid Phase Extraction on aminopropyl-bonded silica with diluted aqueous sodium hydroxide as an eluent. The extraction step was followed by thin layer chromatography on silica gel 60 with chloroform-isopropanol-25% aq. ammonia 1\u2009:\u20093\u2009:\u20091 (v\/v\/v) as mobile phase and the densitometric quantification of dyes was achieved using quadratic calibration plots (<mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" id=\"M1\"><mml:msup><mml:mrow><mml:mi>R<\/mml:mi><\/mml:mrow><mml:mrow><mml:mn fontstyle=\"italic\">2<\/mml:mn><\/mml:mrow><\/mml:msup><mml:mo>&gt;<\/mml:mo><mml:mn fontstyle=\"italic\">0.997<\/mml:mn><\/mml:math>; <mml:math xmlns:mml=\"http:\/\/www.w3.org\/1998\/Math\/MathML\" id=\"M2\"><mml:mi mathvariant=\"normal\">L<\/mml:mi><mml:mi mathvariant=\"normal\">O<\/mml:mi><mml:mi mathvariant=\"normal\">Q<\/mml:mi><\/mml:math> = 0.04\u20130.09\u2009<jats:italic>\u03bc<\/jats:italic>gspot<jats:sup>\u22121<\/jats:sup>). The overall recoveries for all studied dyes were at the average level of over 90% and the repeatability of the proposed procedure (CV \u2264 4.1%) was sufficient to recommend it for the routine quantification of the aforementioned dyes in liquid matrices.<\/jats:p>","DOI":"10.1155\/2017\/9528472","type":"journal-article","created":{"date-parts":[[2017,7,17]],"date-time":"2017-07-17T17:02:24Z","timestamp":1500310944000},"page":"1-9","source":"Crossref","is-referenced-by-count":10,"title":["SPE\/TLC\/Densitometric Quantification of Selected Synthetic Food Dyes in Liquid Foodstuffs and Pharmaceutical Preparations"],"prefix":"10.1155","volume":"2017","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-1846-9240","authenticated-orcid":true,"given":"Anna W.","family":"Soba\u0144ska","sequence":"first","affiliation":[{"name":"Department of Analytical Chemistry, Medical University of Lodz, Ul. 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