| Spectral characteristic investigation on complex of Ni (II) with captopril and its analytical application. | |
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MedLine Citation:
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PMID: 22510489 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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In this paper, Ni (II) reacting with captopril (CPT) can form complex in alkaline solution and the formed complex has a characteristic absorption peak at 340nm. The absorbance of the Ni-CPT complex increases linearly with the increased concentration of captopril. The study also shows that ammonia has an obvious sensitizing effect on the absorbance. Based on the study, a new method for the determination of captopril is established. Experimental results show that the linear range of this method under optimum condition is 1.0-60mg/L with correlation coefficient, detection limit and precision of 0.9999, 0.31mg/L and 0.87%, respectively. The method used to determine captopril in commercial captopril tablets has a satisfactory result with the recoveries in the range of 99.0-103.6% and the relative standard deviation (RSD) in the range of 0.8-3.7%. We preliminarily study the reaction mechanism and demonstrate that the complex ratio of Ni (II) with captopril is 1:2 and the formation constant is 6.3×10(9). |
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Authors:
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Xiaoling Wei; Liangwei Du; Dongmei Li; Qi Gong; Lisheng Wang; Yu Lin |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2012-3-28 |
Journal Detail:
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Title: Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy Volume: 94C ISSN: 1873-3557 ISO Abbreviation: - Publication Date: 2012 Mar |
Date Detail:
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Created Date: 2012-4-18 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9602533 Medline TA: Spectrochim Acta A Mol Biomol Spectrosc Country: - |
Other Details:
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Languages: ENG Pagination: 12-17 Citation Subset: - |
Copyright Information:
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Copyright © 2012 Elsevier B.V. All rights reserved. |
Affiliation:
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College of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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