Payame Noor University, Iran Iranian Journal of Analytical Chemistry 2383-2207 1 1 2014 03 01 Selective Complexmetric Determination of Titanum (IV) by Using 5-Sulphosalicylic Acid as Releasing Agent اندازه گیری کمپلکسومتری انتخابی تیتانیوم (IV) با استفتده از 5-سولفوسالیسیلک اسید به عنوان عامل رها سازی 50 52 938 EN Nagaraj P Shetty Department of Chemistry, Dr. M.V.Shetty Institute of Technology, Moodbidri, Mangalore-574225, Karnataka, India Gopalakrishna Bhatn Department of Chemistry, Srinivas Institute of Technology, Valachil, Mangalore- 574 143, Karnataka, India Chandrashekara Kg Department of Chemistry, Srinivas Institute of Technology, Valachil, Mangalore- 574 143, Karnataka, India Journal Article 2014 02 02 <span style="font-family: Times New Roman; font-size: small;">A complexometric method for the determination of titanium in the presence of other metal ions based on the selective masking ability of 5-sulphosalicylic acid towards titanium is described. Titanium (IV) present in a given sample solution is complexed with a known excess of EDTA and surplus EDTA is titrated against zinc sulphate solution at pH 5-6 using xylenol orange as the indicator. A known excess of 10% solution of 5-sulphosalicylic acid is then added. The mixture is then shaken well and the EDTA released from Ti-EDTA complex is titrated against the standard zinc sulphate solution. Reproducible and accurate results are obtained for 0.96 – 28.75 mg of titanium (IV) with relative error ± 0.17% and standard deviations ≤ 0.02 mg<em>.</em> The interference of various ions is studied. This method was applied to the determination of titanium (IV) in its alloys.</span> <span style="font-family: 'B Zar'; font-size: 10pt; mso-ascii-font-family: 'Times New Roman'; mso-ascii-theme-font: major-bidi; mso-fareast-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-hansi-theme-font: major-bidi; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: FA;" lang="FA" dir="RTL">یک روش کمپلکسو متری برای تعیین تیتانیوم در حضور یونهای فلزی دیگر بر پایه توانایی ماسک گزینشی 5-سولفوسالیسیلک اسید نسبت به تیتانیوم معرفی شده است. تیتانیوم موجود که در یک محلول نمونه مشخص با یک مقدار مشخصی از </span><span style="font-family: 'Times New Roman','serif'; font-size: 10pt; mso-ascii-theme-font: major-bidi; mso-fareast-font-family: 'Times New Roman'; mso-hansi-theme-font: major-bidi; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: FA; mso-bidi-font-family: 'B Zar';">EDTA</span><span style="font-family: 'B Zar'; font-size: 10pt; mso-ascii-font-family: 'Times New Roman'; mso-ascii-theme-font: major-bidi; mso-fareast-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-hansi-theme-font: major-bidi; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: FA;" lang="FA" dir="RTL"> کمپلکس داده و مقدار اضافی آن با استفاده از محلول سولفات روی در </span><span style="font-family: 'Times New Roman','serif'; font-size: 10pt; mso-ascii-theme-font: major-bidi; mso-fareast-font-family: 'Times New Roman'; mso-hansi-theme-font: major-bidi; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: FA; mso-bidi-font-family: 'B Zar';">pH</span><span style="font-family: 'B Zar'; font-size: 10pt; mso-ascii-font-family: 'Times New Roman'; mso-ascii-theme-font: major-bidi; mso-fareast-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-hansi-theme-font: major-bidi; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: FA;" lang="FA" dir="RTL"> برابر 6-5 و با استفاده از معرف شناساگر زایلنول نارنجی تعیین و محاسبه شد. محلول 10 درصد از 5-سولفوسالیسیلک اسید در ادامه اضافه شده و سپس فرصت داده می شود تا </span><span style="font-family: 'Times New Roman','serif'; font-size: 10pt; mso-ascii-theme-font: major-bidi; mso-fareast-font-family: 'Times New Roman'; mso-hansi-theme-font: major-bidi; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: FA; mso-bidi-font-family: 'B Zar';">EDTA</span><span style="font-family: 'B Zar'; font-size: 10pt; mso-ascii-font-family: 'Times New Roman'; mso-ascii-theme-font: major-bidi; mso-fareast-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-hansi-theme-font: major-bidi; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: FA;" lang="FA" dir="RTL"> آن از طریق کمپلکس با معرف جدید آزاد شود. در ادامه این میزان </span><span style="font-family: 'Times New Roman','serif'; font-size: 10pt; mso-ascii-theme-font: major-bidi; mso-fareast-font-family: 'Times New Roman'; mso-hansi-theme-font: major-bidi; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: FA; mso-bidi-font-family: 'B Zar';">EDTA</span><span style="font-family: 'B Zar'; font-size: 10pt; mso-ascii-font-family: 'Times New Roman'; mso-ascii-theme-font: major-bidi; mso-fareast-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-hansi-theme-font: major-bidi; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: FA;" lang="FA" dir="RTL"> رها شده، مجددا تعیین شده و به مقدار تیتانیوم موجود در محلول پی برده می شود.</span> https://ijac.journals.pnu.ac.ir/article_938_4b883d3008c9bd707a42fb4cb6744d3d.pdf