Zinc is determined in neutrophils and lymphocytes (isolated from whole blood on discontinuous gradients of Ficoll-Hypaque) and in microliter quantities of plasma and erythrocytes by flameless atomic absorption spectrophotometry with greater sensitivity than with conventional flame atomic absorption spectrophotometry. Before analysis, neutrophils and lymphocytes are digested with nitric acid and...

A spectrometer system was constructed for measurement of transient species in flames by absorption of ultraviolet radiation. The output of a xenon arc lamp was used as the source of radiation, which was focused through the flame and onto a monochromator equipped with an intensified silicon diode array detector. The system was used to measure absorption by hydroxyl (OH) radical around 306 nm in ...

A novel atomic absorption spectrometric method and two highly sensitive spectrophotometric methods were developed for the determination of paracetamol. These techniques based on the oxidation of paracetamol by iron (III) (method I); oxidation of p-aminophenol after the hydrolysis of paracetamol (method II). Iron (II) then reacts with potassium ferricyanide to form Prussian blue color with a max...

inorganic lead compounds are used most widely in paint and pigment industries. because of exposure to lead dust in workers in a copying center, we compared blood lead levels in these workers to normal individuals and investigated the relationship between job tenures of the workers and their blood lead levels. this survey was performed on 20 simple workers in a copying center of tehran universit...

........................................................................................................................... 3Content ............................................................................................................................. 4 Chapter 1 – Introduction ................................................................................................ 61.1 O...

liVEETHODS of magnesium deternmination immbiologic fluids constitute an extensive literature. Magnesium ammonium phosphate precipitation (1), complexometric titration (2, 3), photometry (4, 5), fluorometry (6, 7), atomic absorption (8-11), and flame emission photometry (1214) have been employed for serum analysis. “Normal” ranges reported by these methods have been repeatedly tabulated (15-16) ...