Zobrazeno 1 - 10
of 18
pro vyhledávání: '"Tye E. Barber"'
In Situ Measurement of Fuel in the Cylinder Wall Oil Film of a Combustion Engine by LIF Spectroscopy
Publikováno v:
Applied Spectroscopy. 52:112-118
Hydrocarbon emissions remain an important concern for the automotive industry due to increasingly strict regulations. In an investigation of possible emission sources within the engine, the concentration of fuel absorbed in the oil film on the cylind
Publikováno v:
Environmental sciencetechnology. 29(6)
A prototype ultraviolet absorption sensor was used to continuously monitor the composition of vapor extractant from soil remediation wells at the Lawrence Livermore Dynamic Underground Stripping Site over a period of five weeks. The sensor measured a
Publikováno v:
Applied Spectroscopy. 48:1423-1427
The analytical application of surface-enhanced Raman spectroscopy (SERS) to the determination of nicotine is demonstrated. A simple spectroelectrochemical method using a copper or silver electrode as the SERS substrate has been developed, consisting
Publikováno v:
Applied Spectroscopy. 48:1265-1271
An in situ method for the determination of trichloroethylene (TCE), perchloroethylene (PCE), chloroform (CHCl3), and carbon tetrachloride (CCl4) in aqueous solution is described. The method is based on ESERS—a combination of electrochemical methods
Publikováno v:
Spectrochimica Acta Part B: Atomic Spectroscopy. 48:331-342
Three resonance line lasers (RLLs), employing GaI3, InI and TlI, were constructed and characterized. The figures of merit of the RLLs such as spectral output, source irradiance, temporal behavior, and source lifetime were determined. A novel approach
Publikováno v:
Spectrochimica Acta Part B: Atomic Spectroscopy. 46:1009-1014
A diode laser was used as the source for atomic absorption spectroscopy. To overcome the frequency instability and drift of the laser, a new referencing approach is proposed. The frequency of the laser is modulated across the rubidium transition at 7
Publikováno v:
Applied Spectroscopy. 45:524-526
A simple method of evaluating absolute number densities in atom reservoirs is described. It consists of measuring the difference in the integrated absorption signals obtained from a reference cell and an analytical cell with a frequency-modulated dio
Publikováno v:
Applied Spectroscopy. 44:1577-1579
Diode lasers are compact, highly efficient, temperature-tunable, long-lived, low-noise, simple-to-operate, and relatively inexpensive solid-state lasers that are rapidly becoming more useful in spectrochemical studies. Recently, Imasaka and Ishibashi
Publikováno v:
Analytical Chemistry. 62:1893-1895
Publikováno v:
Applied Spectroscopy. 44:1094-1096
The laser diode recently has been applied to atomic spectroscopy in laser-enhanced ionization spectroscopy, laser-excited atomic fluorescence spectroscopy, resonance ionization mass spectrometry, and atomic absorption spectroscopy (AAS). Its attracti