{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,7]],"date-time":"2026-07-07T02:07:23Z","timestamp":1783390043859,"version":"3.54.6"},"reference-count":22,"publisher":"Wiley","issue":"3","license":[{"start":{"date-parts":[[2011,7,29]],"date-time":"2011-07-29T00:00:00Z","timestamp":1311897600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"name":"Consejer\u00eda de Educaci\u00f3n y Ciencia, Junta de Comunidades de Castilla-La Mancha","award":["PCI-08-0120"],"award-info":[{"award-number":["PCI-08-0120"]}]}],"content-domain":{"domain":["analyticalsciencejournals.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Phytochemical Analysis"],"published-print":{"date-parts":[[2012,5]]},"abstract":"<jats:sec><jats:title>Introduction<\/jats:title><jats:p>1\u2010Naphthylacetic and 2\u2010naphthoxyacetic acids belong to the synthetic branch of auxins. Auxins have attracted considerable interest as a subject of study by virtue of their biological and physiological significance. Their broad use as plant growth regulators has raised the need for simple, rapid, sensitive and selective analytical methods for their determination in real samples.<\/jats:p><\/jats:sec><jats:sec><jats:title>Objective<\/jats:title><jats:p>The primary aim of this work was to develop an analytical method for the simultaneous determination of 1\u2010naphthylacetic acid and 2\u2010naphthoxyacetic acid in commercial technical formulations, tomato and various fruit types (apple, strawberry, orange and plum) by room temperature phosphorescence.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methodology<\/jats:title><jats:p>Filtrated solutions of aqueous slurries from ecological fruit and tomato samples are acidified and then extracted with dichloromethane. Once the solvent is evaporated, the dried residue is dissolved in sodium dodecyl sulphate (a micellar agent), and supplied with thallium (I) nitrate as an external heavy atom source and sodium sulphite as deoxygenation agent to enhance the ensuing phosphorescence.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>The broad\u2010band overlapping spectra for the two analytes were resolved by first\u2010 and second\u2010derivative phosphorescence spectrometry. Zero\u2010crossing measurements at 488.5\u2009nm in the first\u2010derivative spectrum and 469.5\u2009nm in the second derivative spectrum exhibited a linear dependence on the 2\u2010naphthoxyacetic acid and 1\u2010naphthylacetic acid concentration, respectively. The detection limits as determined in accordance with the error propagation theory were 11.5\u2009ng\/mL for 1\u2010naphthylacetic acid and 15.6\u2009ng\/mL for 2\u2010naphthoxyacetic acid.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>The proposed method affords the determination of 1\u2010naphthylacetic acid and 2\u2010naphthoxyacetic acid in real samples with near\u2010quantitative recoveries from agricultural products. Copyright \u00a9 2011 John Wiley &amp; Sons, Ltd.<\/jats:p><\/jats:sec>","DOI":"10.1002\/pca.1345","type":"journal-article","created":{"date-parts":[[2011,7,29]],"date-time":"2011-07-29T10:07:25Z","timestamp":1311934045000},"page":"214-221","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":28,"title":["Simultaneous Determination of Plant Growth Regulators 1\u2010Naphthylacetic Acid and 2\u2010Naphthoxyacetic Acid in Fruit and Vegetable Samples by Room Temperature Phosphorescence"],"prefix":"10.1002","volume":"23","author":[{"given":"Jos\u00e9 A.","family":"Murillo Pulgar\u00edn","sequence":"first","affiliation":[{"name":"Department of Analytical Chemistry and Foods Technology University of Castilla\u2010La Mancha  13071 Ciudad Real Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Luisa F.","family":"Garc\u00eda Bermejo","sequence":"additional","affiliation":[{"name":"Department of Analytical Chemistry and Foods Technology University of Castilla\u2010La Mancha  13071 Ciudad Real Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ignacio","family":"S\u00e1nchez\u2010Ferrer Robles","sequence":"additional","affiliation":[{"name":"Department of Analytical Chemistry and Foods Technology University of Castilla\u2010La Mancha  13071 Ciudad Real Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sonia","family":"Becedas Rodr\u00edguez","sequence":"additional","affiliation":[{"name":"Department of Analytical Chemistry and Foods Technology University of Castilla\u2010La Mancha  13071 Ciudad Real Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2011,7,29]]},"reference":[{"key":"e_1_2_6_2_1","first-page":"242","article-title":"Nomenclature, symbols, units and their usage in spectrochemical analisis \u2013 II","volume":"33","year":"1978","journal-title":"Spectrochim Acta 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