Dr Farida M S E El-Dars, Phd - Helwan University - Professor

Dr Farida M S E El-Dars


Helwan University


Cairo, Cairo | Egypt

Main Specialties: Other, Public Health

Additional Specialties: Analytical Chemistry

ORCID logohttps://orcid.org/0000-0002-1564-1615

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Dr Farida M S E El-Dars, Phd - Helwan University - Professor

Dr Farida M S E El-Dars



Experienced Professor with a demonstrated history of working in environmental analytical chemistry and industrial pollution abatement projects. Experienced Professional with over 4 working with the Egyptian Environmental Affairs Agency in the field of Industrial project identification, formulation, and implementation. Skilled in Microsoft Word, Lecturing, Environmental Impact Assessment, Public Speaking, and High-Performance Liquid Chromatography (HPLC) and other topics concerning analytical and environmental chemistry. Strong education professional with a Doctor of Philosophy (Ph.D.) focused in Environmental Physical and Biological Sciences from Ain Shams University, MSc from University of Alberta, Edmonton, Canada and a BSc from the American University in Cairo.

Primary Affiliation: Helwan University - Cairo, Cairo , Egypt


Additional Specialties:

Research Interests:

View Dr Farida M S E El-Dars’s Resume / CV


Sep 1992 - Dec 1998
Ain Shams University
PhD (ranked first)
Environmental Research and Studies Institute
Sep 1982 - Nov 1985
University of Alberta
Sep 1977 - Jun 1981
American University in Cairo
BSc (Highest Honors)


Aug 2007 - Aug 2007
Helwan University
Associate Prof
Mar 1998 - Dec 1996
Helwan University
Assistant Prof




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8PubMed Central Citations

Algal control and enhanced removal in drinking waters in Cairo, Egypt.

J Water Health 2015 Dec;13(4):1060-72

Head of Chemical and Electrometallurgy Division, CMRDI, El Tibeen, Helwan, Cairo, Egypt.

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http://dx.doi.org/10.2166/wh.2015.287DOI Listing
December 2015
7 Reads
1.460 Impact Factor

A preliminary bacterial study of Egyptian paper money.

Int J Environ Health Res 2005 Jun;15(3):235-9

Chemistry Department, Faculty of Science, Helwan University, Ain Helwan, Cairo, Egypt.

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http://dx.doi.org/10.1080/09603120500105976DOI Listing
June 2005
212 Reads
8 Citations
1.513 Impact Factor

Evaluation of groundwater quality within a typical Egyptian village, North of Cairo, Egypt.

Ann Chim 2005 May;95(5):357-68

Department of Chemistry, Faculty of Science, Helwan University, Ain Helwan, Cairo, Egypt.

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May 2005
3 Reads

Development and Validation of RP-HPLC Method for the Simultaneous Determination of Levocetirizine Dihydrochloride and Ambroxol Hydrochloride in Bulk Drug and Pharmaceutical Dosage Form

American Journal of Pharmacy and Health Research, Volume 1, Issue 8

ABSTRACT Levocetirizine dihydrochloride (LCD) and Ambroxol Hydrochloride (ABH) are two chemicals used for the treatment of upper respiratory tract diseases and elevation of allergy symptoms. Few HPLC methods were reported for the estimation of LCD and ABH in bulk and in tablet dosage form without extraction. The present work describes a simple, precise and accurate isocratic reversed-phase HPLC method that was developed and validated for the estimation of Levocetirizine dihydrochloride and Ambroxol hydrochloride in bulk and in tablet dosage form. The proposed RP-HPLC method was carried out using Intersil C8 column (5 mm, 25 cm, 4.6 mm i.d.). The mobile phase of water: acetonitrile mixture (50:50 v/v) was adjusted to pH 3.3 using ortho-phosphoric acid and applied at a flow rate of 1mL/min and 20 mL injection volume. The detection was achieved with UV at 225 nm. The retention time of ABH and LCD was 1.80 ± 0.01 min and 3.21 ± 0.07 min, respectively. The proposed method was validated for linearity, accuracy, precision, LOD and LOQ. The calibration plot was linear over the concentration range of 5-400 μg/ml for ABH and 1-35 μg/ml for LCD. The mean absolute recoveries for ABH and LCD were about 98.97 % and 100.8 %, respectively. From the validation study, it was found that the method was specific, rapid, accurate, sensitive, and reproducible. The high recovery and low relative standard deviation confirm the suitability of the method for routine pharmaceutical quality control of both these drugs separately and in their combined dosage form.

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