... Title : THE MASS SPECTROMETRIC DETECTION OF DIMERS OF NITRIC OXIDE AND OTHER POLYATOMIC MOLECULES. ...
DTIC Science & Technology
... Title : MASS SPECTROMETRIC DETECTION OF LABILE HYDRIDES FORMED BY ATOMIC HYDROGEN REACTIONS,. ...
Atomic-absorption spectrometric methods are described for the determination of metals and silicon in a fly-ash which is produced during oil recovery from Alberta tar sands. The techniques of standard additions and matrix matching are compared. An experimental design for the detection, estimation and correction of interference effects ...
PubMed
Analyses of very complex samples involving capillary and chip electrophoresis often require dual (multiple) detection to attain sufficient selectivity of determination. The present work reviews and critically evaluates selected combinations of electrochemical detection techniques among themselves and with absorption ...
... Accession Number : AD0472771. Title : SPECTROMETRIC OIL ANALYSIS FOR THE DETECTION OF INCIPIENT TURBOJET ENGINE FAILURES. ...
... Title : Mass Spectrometric Detection of Sulfur Mustard Adducts to Proteins and DNA: Dosimetry of Exposure to Sulfur Mustard. ...
... continuing correlation programs are essential to the management and control of the laboratories engaged in the spectrometric oil analysis programs ...
... Title : Trace Spectrometric Flame Analysis and Gas Chromatographic Detectors Related to Jet Engine Oil Analysis and Gas Detection. ...
... were performed in a specially designed concentric furnace followed by a high pressure sampling technique and mass spectrometric detection. ...
A simple and reliable method based upon impregnation of Cyanex302 on octadecyl bonded silica membrane disk has been developed for separation and atomic absorption spectrometric determination of nickel. The influence of various parameters like aqueous phase pH, flow rate and volume of eluent were investigated systematically to optimize the conditions for ...
Ionic alkyllead compounds are extracted from water samples into pentane by complexation with sodium diethyldithiocarbamate. Inorganic lead is complexed with EDTA. The organic phase is evaporated to dryness by vacuum distillation, after which butylation with n-butyl Grignard reagent is carried out in a microvolume of n-nonane. The analysis is performed by gas chromatography with atomic ...
Energy Citations Database
Collinear dual beam thermal lens spectrometric (TLS) detection, combined with flow injection analysis (FIA), was developed and applied to determine simultaneously concentrations of ionic and colloidal silver in the Russian drinking water supplies of the International Space Station (ISS). The newly developed method is based on on-line generation of silver ...
NASA Astrophysics Data System (ADS)
A dry ashing, flameless atomic absorption spectrometric method was evaluated to determine arsenic and selenium in foods. Samples were dry-ashed with Mg(NO3)2-MgO and dissolved in HCl. Selenate was reduced to selenite by boiling in 4N HCl. Selenate was reduced to selenite by boiling in 4N HCl, and arsenate to arsenite by treatment with KI. Hydrides of ...
The structure of a modified uridine derivative which was detected at the first letter position of the anticodon of Bacillus subtilis tRNA1Lys was determined to be 5-(carboxymethylaminomethyl)-2-thiouridine. The determination was mainly based in this ultraviolet absorption spectra and mass spectrometric analysis of the trimethylsilyl ...
PubMed Central
Fourier transform infrared absorption spectroscopy and secondary ion mass spectroscopy have been carried out on GaAs based dilute nitride layers after treatment with H{sup +} or D{sup +} ions. Formation of N-H (D-H) centers is detected by vibrational absorption bands of H (D). The modes are assigned to two different complexes, each ...
Fourier transform infrared absorption spectroscopy and secondary ion mass spectroscopy have been carried out on GaAs based dilute nitride layers after treatment with H+ or D+ ions. Formation of N-H (D-H) centers is detected by vibrational absorption bands of H (D). The modes are assigned to two different complexes, each involving one H ...
A discrete sample nebulization technique was employed to determine trace metals in nuclear grade zirconium and Zircaloy by flame atomic-absorption spectrometry. With 10% (w v ) sample solutions, detection limits for Cd, Cu, Mn, Ni, and Pb were 0.6, 2, 1,3, and 10 mug g . Micro standard-addition procedures and background correction were employed to minimize ...
... Interlaboratory Trial: Graphite Furnace Atomic Absorption Spectrometric Determination of Lead and cadmium Extracted from Ceramic Foodware ...
Center for Food Safety and Applied Nutrition (CFSAN)
