Spectrochemical methodswas employed for determination of wear metals (Fe, Cu, Pb and Al) that result from the internal friction between engine's component after using for a different distances in commercial fuchs lubricating oil. The samples were collected from the engine after running for 0 till 3000Km.
The scheme of this work involves synthesis of different five memberd hetrocyclic rings from ρ-chlorobenzoic hydrazide which was synthesized from it's carboxylic acid.
This work is divided into three parts:
Refluxed ampicillin trihydrate was determined using conventional and derivative UV absorption spectrophotomerty.The calibration curve for refluxed ampicillin trihydrate at 339 nm was found to have a linear range extended from 4 to 200 ppm with relative standard deviation for the slope of 0.0082 and correlation coefficient of 0.9999 with detection limit of 0.5 ppm. The effect of pH on the determination of ampicillin trihydrate at this wavelength was investigated.
