Contents: Flame emission and atomic absorption spectrometry (Derivative flame emission spectrometry, Evaluation of the atomic absorption method for arsenic, Analytical application to standard reference materials); Spectrophotometry and spectrofluorometry ...
National Technical Information Service (NTIS)
A new method is described and tested for background correction in atomic absorption spectrometry. Applicable to flame or furnace atomizers, the method is capable of correcting backgrounds caused by molecular absorption, particulate scattering, and atomic-...
Reviews developments in ultraviolet and light absorption spectrometry from December 1981 through November 1983, focusing on the chemistry involved in developing suitable reagents, absorbing systems, and methods of determination, and on physical aspects of the procedures. Includes lists of spectrophotometric methods ...
ERIC Educational Resources Information Center
Using previously presented expressions for the limiting detectable atomic concentration (and sample solution concentration aspirated into the flame gases) in atomic emission, atomic absorption, and atomic fluorescence flame spectrometry, it is possible to...
A direct method for the determination of cadmium in elemental aluminium is described. Metal samples are dissolved in diluted hydrochloric acid and cadmium is determined by atomic absorption spectrometry in an air-acetylene flame. Interference by non-speci...
Atomic emission, atomic absorption, and atomic fluorescence flame spectrometry were critically compared theoretically and methodologically. Line radiance expressions for limiting cases are given for each method. These expressions are used to predict the s...
An oscillating Fabry-Perot interferometer for wavelength modulation of radiation from a continuum source was used in atomic absorption flame spectrometry. This new method has the advantages of economy and simplicity associated with a continuum source. Ana...
... Accession Number : ADA278263. Title : Ultraviolet Absorption Spectrometry (UVAS) and Liquid Atomic Emission Spectrometry (LAES. ...
DTIC Science & Technology
A method of diode laser differential absorption spectrometry (DLDAS) is proposed. The method is based on the detection of absorption spectra variations caused by the changes of a parameter of a condensed media (temperature, composition of the components of a mixture, pH, etc.). Some simple ...
PubMed
A new method for measuring the dielectric and absorption constants of materials at millimeter frequencies is described. This new method is called digital spectrometry and rests on a little known property of Fresnel's equations for reflection at 45 deg and the recent appearance of highly accurate digital voltmeters. ...
NASA Astrophysics Data System (ADS)
Aqueous standards of Ag, Cu, Fe, Mg, Ni, Pb, and Sn were used for the measurement of these elements in jet engine and reciprocating engine oils by the graphite rod atomizer atomic absorption spectrometric method. The graphite rod atomizer method resulted ...
The 655 articles cited in this review cover developments in the fields of ultraviolet light absorption spectrometry and light absorption spectrometry during the period December 1977 through November 1979, primarily documented in Chemical Abstracts. An extensive section of the review is devoted to the chemical ...
Energy Citations Database
In the determination of iron in complex organic liquids by atomic absorption spectrometry (A.A.S.), methods of sample preparation, such as dilution with an organic solvent and sample pretreatment to destroy organic material, are investigated. Moreover, methods of analysis using calibration curve and standard ...
Hydride generation atomic absorption spectrometry (HGAAS) is a sensitive and selective method for the determination of total ... ...
NBII National Biological Information Infrastructure
Hydrolysis of frozen concentrated orange juice with concentrated nitric acid has been evaluated as a sample preparation method prior to flame atomic absorption spectrometric measurement of certain elements in orange juice concentrate. The hydrolysis proce...
A new method is presented for the determination of phosphorus in gasoline using flameless atomic absorption. Lanthanum nitrate solution is inserted in a graphite furnace prior to direct addition of gasoline. The organic matrix is charred prior to atomization of the phosphorus. Th...
EPA Science Inventory
... samples for analysis of NO3 (mg/L; molecular absorption spectrometry, method 624; NP 1972), SO4 (mg/L; volumetric ... method, certified in 2008), PO4 (mg/L; molecular absorption spectrometry, methods SMEW...
The authors describe the principle of inductively coupled argon plasma emission spectrometry (ICP) to determine inorganic compounds in biological samples. This method is compared with more classical electrothermal flame atomisation absorption spectrometry. The association of ICP with different instruments is ...
Various analytical methods for the determination of trace elements are discussed with particular emphasis on determination of trace elements in the environment. The methods covered in detail are fluorometry, emission spectroscopy, flame atomic absorption spectrometry, flameless atomic fluorescence ...
