A new spectrophotometric method for the determination of la (iii) with 3-hydroxy-4-(2-hydroxy-phenyl azo) naphthalene-1-sulfonic acid
Other Title(s)
طريقة طيفية جديدة لتقدير اللانثانوم (111) باستخدام كاشف 3-هيدروكسي-4- (2-هيدرروكسي فنيل ازو ) نفثالين -1- حامض السلفونيك
Joint Authors
Darwish, Samar Ahmad
Hammudi, Azhar Sadiq
Mahmud, Ru'ua Muayyid
Source
Ibn al-Haitham Journal for Pure and Applied Science
Issue
Vol. 24, Issue 1 (31 Mar. 2011)13 p.
Publisher
University of Baghdad College of Education for Pure Science / Ibn al-Haitham
Publication Date
2011-03-31
Country of Publication
Iraq
No. of Pages
13
Main Subjects
Abstract AR
اقترحت طريقة بسيطة و سريعة و حساسة لتقدير الانثانوم (111) باستعمال 3- هيدروكسي -4- (2- هيدروكسي فنيل أزو) نفثالين -1- حامض السلفونيك كاشف لوني تعتمد الطريقة على تكوين معقد بلون احمر ارجواني نتيجة لتفاعل (111) La مع الكاشف في وسط قاعدي pH = 9.5 الذي أظهر أعظم امتصاص عند طول موجي مقداره 459 نانوميتر.
لقد أظهرت الطريقة انطباق قانون بير لمدى من التراكيز يتراوح بين (0.5–12) مايكروغرام.مل 1-لتر.مول1-.سم1- المعقد المتكون بنسبة 3 : 1 (فلز : كاشف).
لقد تمت دراسة تأثير وجود متداخلات مختلفة في تقدير (111) La بتطبيق الطريقة تحت الظروف المثلى.
Abstract EN
A simple, rapid and sensitive spectrophotometric method has been proposed for the determination of La (III) using 3-hydroxy -4-(2-hydroxy-phenyl azo) naphthalene -1- sulfuric acid as a chromogenic reagent.
This method is based on the formation of a red-pink colored complex, upon the reaction of La (III) with the reagent in an alkaline medium (pH= 9.50), having a maximum absorbance at 459 nm.
Beer's law is valid in the concentration range 0.5-12 µg.ml-1 with a Sandell's sensitivity value of 0.0188 µg.cm-2 and molar absorptivity of 7376.12 L.mol-1.cm-1.
The stoichiometric composition of the chelate is 1:3.
The effect of the presence of different cations as interferon's in the determination of La (III) under the given optimum conditions were investigated.
American Psychological Association (APA)
Darwish, Samar Ahmad& Hammudi, Azhar Sadiq& Mahmud, Ru'ua Muayyid. 2011. A new spectrophotometric method for the determination of la (iii) with 3-hydroxy-4-(2-hydroxy-phenyl azo) naphthalene-1-sulfonic acid. Ibn al-Haitham Journal for Pure and Applied Science،Vol. 24, no. 1.
https://search.emarefa.net/detail/BIM-286887
Modern Language Association (MLA)
Darwish, Samar Ahmad…[et al.]. A new spectrophotometric method for the determination of la (iii) with 3-hydroxy-4-(2-hydroxy-phenyl azo) naphthalene-1-sulfonic acid. Ibn al-Haitham Journal for Pure and Applied Science Vol. 24, no. 1 (2011).
https://search.emarefa.net/detail/BIM-286887
American Medical Association (AMA)
Darwish, Samar Ahmad& Hammudi, Azhar Sadiq& Mahmud, Ru'ua Muayyid. A new spectrophotometric method for the determination of la (iii) with 3-hydroxy-4-(2-hydroxy-phenyl azo) naphthalene-1-sulfonic acid. Ibn al-Haitham Journal for Pure and Applied Science. 2011. Vol. 24, no. 1.
https://search.emarefa.net/detail/BIM-286887
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-286887
