Background: The quantity and type of dietary fatty acids play an important role in the risk development of cardiovascular disease. Aims: The current study was designed to investigate fatty acid profile of flaxseed oil (FO) and assessment the possible cardiovascular protective potentials of FO on Sprague-Dawley rats fed on high cholesterol diet (HCD) for 12 weeks and explores the possible mechanism of action. Methodology: Fatty acid profile of FO was investigated by Gas Chromatography-Flame Ionization

A sensitive and selective spectrophotometric method for the determination of zirconium(IV) in various samples has been developed. In this method trioctylphosphine oxide (TOPO) is used for the extraction of zirconium. The colour of the complex is developed in the organic phase by the addition of eriochrome cyanine R reagent (ECR) and ethanol as a diluent. The calibration plot is linear in the concentration range 0.08-10 µg ml -1 with a molar absorptivity (ε) of 2.0x10 4 l.mol -1 cm -1 at 564 nm The stoichiometric composition of the chelate is 1:2 ( Zr : ECR ). The extraction of zirconium (IV) was carried out in the presence of various ions to ascertain the tolerance limit of individual ions. The proposed method was successfully used for the determination of zirconium in various samples such as, natural waters and ores .

In the present research, a spectrophotometric method is suggested as an alternative to the gravimetric method used to find mishraq alum purity. The method is based on the complex formation between aluminium ion and either Chrome Azurol S (CAS) or Eriochrome cyanine R (ECR) to give colored products suitable for the determination of aluminium. The same reaction has been applied to the determination of fluoride in tablet, depending on the bleaching effect of fluoride on the formed aluminium colored complex. Statistical comparison of method has given satisfactory results.