{"id":2862,"date":"2017-06-10T16:02:00","date_gmt":"2017-06-10T16:02:00","guid":{"rendered":"https:\/\/chempublishers.com\/pjc\/?p=2862"},"modified":"2025-01-24T10:43:46","modified_gmt":"2025-01-24T10:43:46","slug":"pjc-0217","status":"publish","type":"post","link":"https:\/\/chempublishers.com\/Pakistan-journal-of-chemistry\/2017\/06\/10\/pjc-0217\/","title":{"rendered":"Determination of Fluoride Content in Tea Infusions Sold in Karachi Using Fluoride Ion Selective Electrode"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"2862\" class=\"elementor elementor-2862\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-24eb5c6 e-flex e-con-boxed e-con e-parent\" data-id=\"24eb5c6\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-88aa798 e-con-full e-flex e-con e-child\" data-id=\"88aa798\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-bfabf7c elementor-widget elementor-widget-text-editor\" data-id=\"bfabf7c\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<table border=\"0\" width=\"100%\" cellspacing=\"0\" cellpadding=\"0\" align=\"center\"><tbody><tr><td><div><strong>Research Article | Open Access<\/strong><\/div><div class=\"item doi\"><span class=\"value\">Volume 7 | Issue 1-4 |\u00a0<a href=\"https:\/\/chempublishers.com\/Pakistan-journal-of-chemistry\/wp-content\/uploads\/sites\/2\/2024\/12\/PJC-v07.i01-4.p02.pdf\" target=\"_blank\" rel=\"noopener\">https:\/\/doi.org\/10.15228\/2017.v07.i01-4.p02<\/a><\/span><\/div><\/td><\/tr><\/tbody><\/table><article class=\"obj_article_details\"><h1 class=\"page_title\">Determination of Fluoride Content in Tea Infusions Sold in Karachi Using Fluoride Ion Selective Electrode<\/h1><div class=\"row\"><div class=\"main_entry\"><p><span class=\"name\">Zia Ul Arefin<\/span><\/p><p>Department of Chemistry, University of Karachi, Karachi-75270, Pakistan<\/p><p><span class=\"name\">Tehseen Ahmed<\/span><\/p><p>Department of Chemistry, University of Karachi, Karachi-75270, Pakistan<\/p><p><span class=\"name\">Sana Imran<\/span><\/p><p>Department of Chemistry, University of Karachi, Karachi-75270, Pakistan<\/p><p><span class=\"name\">M. Asad Khan Tanoli<\/span><\/p><p>Department of Chemistry, University of Karachi, Karachi-75270, Pakistan<\/p><p><span class=\"name\">Zahid Khan<\/span><\/p><p>Department of Chemistry, University of Karachi, Karachi-75270, Pakistan<\/p><p>\u00a0<\/p><table border=\"0\" width=\"93%\" cellspacing=\"0\" cellpadding=\"0\" align=\"center\"><tbody><tr><td align=\"center\" valign=\"top\"><strong>Received<\/strong><br \/>13 Jan, 2017<\/td><td align=\"center\" valign=\"top\"><strong>Accepted<\/strong><br \/>21 Mar, 2017<\/td><td align=\"center\" valign=\"top\"><strong>Published<\/strong><br \/>10 Apr, 2017<\/td><\/tr><\/tbody><\/table><p>\u00a0<\/p><div class=\"item abstract\"><p class=\"ql-align-justify\">Fluoride intake is recognized to be important for dental health. Potentiometric analysis of fluoride content ion (F<sup>\u2013<\/sup>) in solutions by using fluoride ion-selective electrode is simple, reliable and cheap. Very small concentrations of fluoride-ions (10<sup>-6<\/sup>\u00a0mol.dm<sup>-3<\/sup>\u00a0) can be determined by fluoride selective electrode. The purpose of this study was to estimate the fluoride contents in various commercially available tea infusions with a specific focus on risk of dental caries and flurosis. 100 mL of 44 different tea brands were kept at boiling temperature and fluoride concentrations were measured at 5, 10 and 15 min using ion selective electrode. In case of tea bags tea infusions were analyzed for fluoride at 5 min after introducing tea bag in boiling water with no further heating. After 5 min at boiling temperature, the mean fluoride concentration for black, green and herbal tea infusions were 1.51 \u2013 7.97, 1.22 \u2013 5.94 and 0.08 \u2013 0.16 respectively.<\/p><\/div><div class=\"item abstract\"><div><h3 class=\"label\">How to Cite this paper?<\/h3><div class=\"csl-entry\"><p><strong>APA-7 Style<\/strong><br \/>Arefin, Z.U., Ahmed, T., Imran, S., Tanoli, M.A., Khan, Z. (2017). Determination of Fluoride Content in Tea Infusions Sold in Karachi Using Fluoride Ion Selective Electrode.\u00a0<a href=\"https:\/\/doi.org\/10.15228\/2017.v07.i01-4.p02\" target=\"_blank\" rel=\"noopener\"><em>Pakistan Journal of Chemistry<\/em>, 7(1-4), 8-11<\/a>. https:\/\/doi.org\/10.15228\/2017.v07.i01-4.p02<\/p><p><strong>ACS Style<\/strong><br \/>Arefin, Z.U.; Ahmed, T.; Imran, S.; Tanoli, M.A.; Khan, Z. Determination of Fluoride Content in Tea Infusions Sold in Karachi Using Fluoride Ion Selective Electrode.\u00a0<a href=\"https:\/\/doi.org\/10.15228\/2017.v07.i01-4.p02\" target=\"_blank\" rel=\"noopener\"><em>Pak. J. Chem.<\/em>\u00a02017, 7, 8-11<\/a>. https:\/\/doi.org\/10.15228\/2017.v07.i01-4.p02<\/p><p><strong>AMA Style<\/strong><br \/>Arefin ZU, Ahmed T, Imran S, Tanoli MA, Khan Z. Determination of Fluoride Content in Tea Infusions Sold in Karachi Using Fluoride Ion Selective Electrode.\u00a0<a href=\"https:\/\/doi.org\/10.15228\/2017.v07.i01-4.p02\" target=\"_blank\" rel=\"noopener\"><em>Pakistan Journal of Chemistry<\/em>. 2017; 7(1-4): 8-11<\/a>. https:\/\/doi.org\/10.15228\/2017.v07.i01-4.p02<\/p><p><strong>Chicago\/Turabian Style<\/strong><br \/>Arefin, Zia, Ul, Tehseen Ahmed, Sana Imran, M. Asad Khan Tanoli, and Zahid Khan. 2017. &#8220;Determination of Fluoride Content in Tea Infusions Sold in Karachi Using Fluoride Ion Selective Electrode&#8221;\u00a0<a href=\"https:\/\/doi.org\/10.15228\/2017.v07.i01-4.p02\" target=\"_blank\" rel=\"noopener\"><em>Pakistan Journal of Chemistry<\/em>\u00a07, no. 1-4: 8-11<\/a>. https:\/\/doi.org\/10.15228\/2017.v07.i01-4.p02<\/p><\/div><\/div><\/div><div class=\"item copyright\"><p><a href=\"https:\/\/creativecommons.org\/licenses\/by\/4.0\/\" rel=\"license\"><img decoding=\"async\" src=\"https:\/\/i.creativecommons.org\/l\/by\/4.0\/88x31.png\" alt=\"Creative Commons License\" \/><\/a><\/p><p>This work is licensed under a\u00a0<a href=\"https:\/\/creativecommons.org\/licenses\/by\/4.0\/\" rel=\"license\">Creative Commons Attribution 4.0 International License<\/a>.<\/p><\/div><\/div><\/div><\/article>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-3831292 e-con-full e-flex e-con e-child\" data-id=\"3831292\" data-element_type=\"container\">\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Research Article | Open AccessVolume 7 | Issue 1-4 |\u00a0https:\/\/doi.org\/10.15228\/2017.v07.i01-4.p02 Determination of Fluoride Content in Tea Infusions Sold in Karachi Using Fluoride Ion Selective Electrode Zia Ul Arefin Department of Chemistry, University of Karachi, Karachi-75270, Pakistan Tehseen Ahmed Department of Chemistry, University of Karachi, Karachi-75270, Pakistan Sana Imran Department of Chemistry, University of Karachi, Karachi-75270, [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-2862","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Determination of Fluoride Content in Tea Infusions Sold in Karachi Using Fluoride Ion Selective Electrode - Pakistan Journal of Chemistry<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/chempublishers.com\/Pakistan-journal-of-chemistry\/2017\/06\/10\/pjc-0217\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta 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