Author(s): Assaf H. Tawfeeq, Bushra B. Qassim


DOI: 10.5958/0974-360X.2021.00013.5   

Address: Assaf H. Tawfeeq1, Bushra B. Qassim2
1Ph.D. Student, Department of Chemistry, College of Science, University of Baghdad, Iraq.
2Prof. Analytical Chemistry, Department of Chemistry, College of Science, University of Baghdad, Iraq.
*Corresponding Author

Published In:   Volume - 14,      Issue - 1,     Year - 2021

A simple, automated and sensitive flow-injection analysis/merging zones technique (MZ-FIA) method was developed for the determination of doxycycline hyclate (DOX) in pure and pharmaceutical formulations. This method Involved the reaction of AzoAnthranilic Acid with DOX to produce an orange - yellowish dissolved complex which has maximum absorbance at 468nm. The method was sensitive, precise and accurate were the limit of detection was less than (0.3µg/ml) and the RSD% was less than 1% and Recovery was 98-100%. Various chemical and physical conditions that affected the reaction have been studied. The calibration curve was rectilinear within the concentration range 5-125µg/mL with a sample through put of 80 sample/hour. The proposed procedure was applied successfully for the estimation of DOX and the results obtained were favorably compared with those given by a reference method of British Pharmacopeia, and there was no significant difference between the obtained results, regarding accuracy and precision at the 95% confidence level.

Cite this article:
Assaf H. Tawfeeq, Bushra B. Qassim. A Novel Method of CFIA / Merging zones technique for assay of Doxycycline in Bulk and Pharmaceutical preparation depending on Azo dye Formation. Research J. Pharm. and Tech. 2021; 14(1):67-74. doi: 10.5958/0974-360X.2021.00013.5

Assaf H. Tawfeeq, Bushra B. Qassim. A Novel Method of CFIA / Merging zones technique for assay of Doxycycline in Bulk and Pharmaceutical preparation depending on Azo dye Formation. Research J. Pharm. and Tech. 2021; 14(1):67-74. doi: 10.5958/0974-360X.2021.00013.5   Available on:

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