Laser-induced fluorescence of As, Se and Sb in the inductively coupled plasma

Simeonsson, J. B.; Ezer, M.; Pacquette, H.L.; Preston, Sara; Swart, de Jam Joost

doi:10.1016/s0584-8547(97)00083-9

Cited by 16 publications

(12 citation statements)

References 21 publications

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“…These wavelengths are necessary for As and Se, where the ® rst excited state can be reached only with wavelengths less than 200 nm . Anti-Stokes Raman shifting of 230 nm radiation has been utilized effectively for laser-induced¯uorescence measurem ents of As and Se in the inductively coupled plasma (ICP) 5 and electrotherm al atomizers, 6 but remains to be utilized for LEI m easurements of these elements.…”

Section: Introductionmentioning

confidence: 99%

Far-Ultraviolet Excited Laser-Enhanced Ionization Spectrometry of As, Se, Cu, and Sb in Air/Acetylene and Ar/O₂/Acetylene Flames

et al. 1999

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Laser-enhanced ionization (LEI) measurements of As, Se, Sb, and Cu in air/acetylene and Ar/O2/acetylene flames are reported. The use of far-UV excitation wavelengths to perform one- and two-step LEI excitation from the ground states of As, Se, and Sb is reported for the first time. Significant ionization background signals are observed for far-UV excitations in the air/acetylene flame, but are reduced by substituting an (80:20) Ar/O2 mixture for air as the flame oxidant. The sensitivities of the individual LEI techniques are also increased by the Ar/O2 gas substitution. The limits of detection for As, Se, Sb, and Cu are 30, 0.5, 9 and 2 ng/mL, respectively, and compare favorably with previous LEI reports. Due to the poor atomization characteristics of As and Se, the utility of hydride generation (HG) sample introduction with LEI detection has been explored. Although high sensitivity has been observed for the HG-LEI approach, limits of detection were not evaluated due to nonlinear responses of the signals with respect to analyte concentration.

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Section: Introductionmentioning

confidence: 99%

Far-Ultraviolet Excited Laser-Enhanced Ionization Spectrometry of As, Se, Cu, and Sb in Air/Acetylene and Ar/O₂/Acetylene Flames

et al. 1999

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“…Both schemes have been evaluated previously for direct solution measurem ents in the ICP and ETA. Limits of detection (LODs) of 4 ng/m L for As and 2 ng/m L for Se have been reported in the ICP, 15 while LODs of 0.02 ng/ mL for As and 0.02 ng/m L for Se have been reported in the ETA. 16 In earlier work, saturation energies of As (2± 4 m J) and Se (1±2 m J) were determined in the ICP and ETA atomizers.…”

Section: Resultsmentioning

confidence: 99%

“…The laser instrumentation used in these studies was the same as that employed previously. 15,16 Brie¯y, a XeF excimer laser (L PX 210i, Lambda Physik, Ft. Lauderdale, FL ) operating at 351 nm provides up to 350 mJ per pulse at repetition rates of up to 100 Hz. The output of the excimer was used to pump a dye laser (Scanmate 2, Lambda Physik) operating near 460 nm to produce radiation near 230 ±235 nm by frequency doubling in a BBO I cr ystal.…”

Section: Exp Erim Entalmentioning

confidence: 99%

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Hydride Generation Laser-Induced Fluorescence of Arsenic and Selenium in the Inductively Coupled Plasma and Electrothermal Atomizer

et al. 2000

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The application of hydride generation (HG) sample introduction combined with laser-induced fluorescence (LIF) detection in the inductively coupled plasma (ICP) and electrothermal atomizer (ETA) is reported. Far-ultraviolet excitation of As at 193.696 nm and Se at 196.026 nm is accomplished by using a tunable dye laser system with frequency doubling and stimulated Raman scattering. HG-ICP-LIF and HG-ETA-LIF techniques have been developed and demonstrate good sensitivity and good linearity at the ng/mL to sub-ng/mL level for both elements. The relative standard deviation of replicate measurements is on the order of 3–10% at the 5 ng/mL level for the HG-ICP-LIF technique and 5–35% at the 0.6 ng/mL level for the HG-ETA-LIF technique. Detection limits of 1 ng/mL (5 ng absolute mass) for As and 0.06 ng/mL (0.3 ng) for Se are reported for the HG-ICP-LIF technique and 0.04 ng/mL (0.2 ng) for As and 0.16 ng/mL (0.8 ng) for Se are reported for the HG-ETA-LIF technique. Lower than expected sensitivity and precision are observed in the ETA, which may be due to inefficient trapping of the hydrides in the procedure. Selective HG procedures have been demonstrated for the speciation and recovery of selected oxidation states of As and Se. The analytical capabilities of the HG-LIF techniques are compared to those of other HG techniques, and recommendations are made for improved performance of future HG-LIF approaches.

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“…Here, absorption by oxygen in air or by other molecules may hamper detection. Nevertheless, detection of these elements by atomic LIF in atmospheric pressure acetylene/air flames has been demonstrated [296] using tunable (dye) laser radiation in the range 193e213 and detecting the elements off-resonance.…”

Section: Laser Induced Fluorescencementioning

confidence: 99%

On-line spectroscopic and spectrometric methods for the determination of metal species in industrial processes☆

Monkhouse

2011

Progress in Energy and Combustion Science

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Laser-induced fluorescence of As, Se and Sb in the inductively coupled plasma

Cited by 16 publications

References 21 publications

Far-Ultraviolet Excited Laser-Enhanced Ionization Spectrometry of As, Se, Cu, and Sb in Air/Acetylene and Ar/O₂/Acetylene Flames

Far-Ultraviolet Excited Laser-Enhanced Ionization Spectrometry of As, Se, Cu, and Sb in Air/Acetylene and Ar/O₂/Acetylene Flames

Hydride Generation Laser-Induced Fluorescence of Arsenic and Selenium in the Inductively Coupled Plasma and Electrothermal Atomizer

On-line spectroscopic and spectrometric methods for the determination of metal species in industrial processes☆

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Laser-induced fluorescence of As, Se and Sb in the inductively coupled plasma

Cited by 16 publications

References 21 publications

Far-Ultraviolet Excited Laser-Enhanced Ionization Spectrometry of As, Se, Cu, and Sb in Air/Acetylene and Ar/O2/Acetylene Flames

Far-Ultraviolet Excited Laser-Enhanced Ionization Spectrometry of As, Se, Cu, and Sb in Air/Acetylene and Ar/O2/Acetylene Flames

Hydride Generation Laser-Induced Fluorescence of Arsenic and Selenium in the Inductively Coupled Plasma and Electrothermal Atomizer

On-line spectroscopic and spectrometric methods for the determination of metal species in industrial processes☆

Contact Info

Product

Resources

About

Far-Ultraviolet Excited Laser-Enhanced Ionization Spectrometry of As, Se, Cu, and Sb in Air/Acetylene and Ar/O₂/Acetylene Flames

Far-Ultraviolet Excited Laser-Enhanced Ionization Spectrometry of As, Se, Cu, and Sb in Air/Acetylene and Ar/O₂/Acetylene Flames