Several elements (V, Mo, Fe, Mn, Cd, Zn) as metallic impurities in pure uranium compounds were quantitatively determined by atomic absorption spectrometry. The effects of uranium and that of other factors on the absorption intensity of each element were studied. The analyzed samples were dissolved in 6 M nitric acid, and uranium was selectively extracted with tributylphosphate. The aqueous solu...

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...

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) ...

Wang, Weichao. M.S.M.E., Purdue University, May 2015. An Experimental Investigation of a Premixed Laminar Flame Using Tunable Diode Laser and Quantitative Imaging of Radiation Intensity. Major Professor: Jay P. Gore, School of Mechanical Engineering. Simultaneous CO concentration and temperature measurements using Tunable Diode Laser Absorption Spectroscopy (TDLAS) are reported in this study. R...

Using calmagite as the compleximetric agent in spectro-photometric measurements of magnesium in serum involves a nonspecific matrix effect, which may bias results by as much as 25 to 30% if aqueous standards are used in serum assays. We have overcome this effect by simply adding 5 pL of the amphoteric detergent Empigen BB (300 g/L; Albright and Wilson Ltd., Whitehaven, U.K.) to each reaction cu...

some heavy metals are dangerous to health and there is rising concern about the quality of foodstuffs in some parts of the world. fish, particularly tuna fish, can concentrate huge quantities of several metals from water and they even play a significant role in human nourishment. objectives: in this study, the concentrations of mercury and four trace metals in five brands of canned tuna samples...

Calibration in atomic-absorption spectrometry is achieved by means of a concentrationgradient chamber using a single concentrated standard solution. Calibration is rapid and extends over the entire working concentration range of the analyte, irrespective of the shape of the conventionally obtained calibration curve. No curve-fitting approximations are involved. With well-designed apparatus, dev...

An injection method has been adapted for the determination of copper concentration in untreated, undiluted serum by flame atomic absorption spectroscopy. Serum, 50 or 100 microliter, is automatically injected by a commercial microprobe system into a plastic cone connected to the capillary tube of the burner, at a rate of 240 samples per hour. The required sample volume is considerably decreased...