Two simple, rapid, accurate, precise, reliable and economical spectrophotometric methods have been proposed for determination of two widely used new steroids in bulk as well as in pressurised metered dose preparations. The steroids are Ciclesonide and Fluticasone propionate. Both steroids are widely used in the treatment of various types of respiratory disorders. The developed methods for deter...

Full Text PDF. Recovery studies were performed using 0. 5 mL of red wine and whisky. Enter the password to open this PDF file. spectrophotometric determination of ethanol in wine pdf Treatment procedures, and only spectrophotometry is used1 Jan 2012. The method consists of color reaction of ethanol with sodium dichromate. SPECTROPHOTOMETRIC DETERMINATION. For spectrophotometric determination of...

An automatic enzyme kinetic luminometric method for determination of small quantities of urea in biological fluids and in microdialysates is presented. The method is based on the ATP-hydrolyzing urease reaction [urea amidohydrolase (ATP-hydrolyzing); EC 3.5.1.45], monitored by a luciferin-luciferase ATP reaction. The assay range is 100 pmol to 50 nmol with a detection limit of 5 micromol/L in t...

The conventional spectrophotometric method that is often applied to determine ribonuclease (RNase) has disadvantages that include cumbersome manipulation, time-consuming processing and a lack of linear range. We had found that a low concentration of RNA could induce cationic aluminum phthalocyanine (tetra(trimethylammonio)aluminum phthalocyanine (TTMAAlPc)), which emitted strong red fluorescenc...

A simple and sensitive flow injection spectrophotometric method is reported for the room temperature determination of nitrite and nitrate based on the Griess reaction and a copperised cadmium column for reduction of nitrate. Calibration graphs were linear over the range 2 – 1000 μg N L (R = 0.9997 and 0.9999, n = 9) with a limit of detection (3 s.d.) of 1.0 μg N L and relative standard deviatio...

Antibiotics are one of the most common pharmaceutical products, used for the treatment of bacterial ,fungal and parasitic infections. Among antibiotics, tetracyclines are extensively used in both human and animal welfare. Hence the monitoring and estimation of the levels of tetracycline in pharmaceutical products and effluents have become a necessity for researchers and industries. Current meth...

New, simple and convenient potentiometric and spectrophotometric methods are described for the determination of dextromethorphan hydrobromide (DXM) in pharmaceutical preparations. The potentiometric technique is based on developing a potentiometric sensor incorporating the dextromethorphan tetrakis(p-chlorophenyl)borate ion-pair complex as an electroactive species in a plasticized PVC matrix me...

An automated analyzer was developed to achieve fast, precise, and accurate measurements of seawater total alkalinity (AT) based on single-point titration and spectrophotometric pH detection. The single-point titration was carried out in a circulating loop, which allowed the titrant (hydrochloric acid and bromocresol green solution) and a seawater sample to mix at a constant volume ratio. The di...