Optogalvanic resonance detection of pulsed dye laser atomic absorption

Abstract

Resonance detection and quantification of atomic absorption have been demonstrated for Na, Cu, and Li using an optogalvanic effect. In this experiment, a pulsed dye laser tuned to an absorption transition of the analyte atom (i.e., the element to be determined) was directed through the analyte atomic vapor produced in a flame into a commercial hollow cathode lamp containing the element of interest. The optogalvanic signal was monitored and related to the analyte concentration in the flame. Detection limits were obtained for Na, Cu, and Li, the behavior of the sodium hollow cathode lamp was characterized, and future applications are suggested.

The role of metastable atoms in glow discharge ionization processes

“…Changes in these characteristics may be monitored electrically, thus yielding a technique with electrical detection of optical effects, OGE spectroscopy. The use of lasers to produce OGE effects has led to a wide range of applications (14)(15)(16)(17)(18)(19)(20)(21).…”

Continuous wave intracavity dye laser absorption with an inductively coupled plasma

“…The optogalvanic effect (OGE) can be used (13)(14)(15)(16) as a resonance detector for laser-based absorption measurements. Figure 1 shows schematically the output from the dye laser being directed to the cathode region of a commercial, sealed hollow cathode lamp.…”

“…Operation in this manner is especially important when working with OGE signals originating from ionic species (e.g., Ba) or metastable atomic levels (e.g., Cu). The output power of the dye laser must be adjusted so as to prevent saturation of the OGE signal (14).…”

Determination of tributyltin in tissues and sediments by graphite furnace atomic absorption spectrometry

“…Drawbacks to this approach include loss of volatile components during evaporation (3) and incomplete extraction of trace materials from solution. More recently, trace materials have been removed from gas (4) or liquid matrices (5)(6)(7)(8) by surface adsorption onto a variety of solid supports including cellulose (9), carbon (4, [10][11][12][13], fiberglass (14), zeolites (15), membrane filters (16), Chelex 100 (17), XAD (18)(19)(20), and Tenex (21) resins and glass or silica gel derivatized with C18 (5,8,22) and other functional groups (17,23,24). Analytes have been adsorbed to a surface either by direct means (4,6,7,(15)(16)(17)(18)(19) or in conjunction with chelating agents (5,8,22,25).…”

“…More recently, trace materials have been removed from gas (4) or liquid matrices (5)(6)(7)(8) by surface adsorption onto a variety of solid supports including cellulose (9), carbon (4, [10][11][12][13], fiberglass (14), zeolites (15), membrane filters (16), Chelex 100 (17), XAD (18)(19)(20), and Tenex (21) resins and glass or silica gel derivatized with C18 (5,8,22) and other functional groups (17,23,24). Analytes have been adsorbed to a surface either by direct means (4,6,7,(15)(16)(17)(18)(19) or in conjunction with chelating agents (5,8,22,25). In other applications, sorption occurs through chemically specific interactions with chelating agents immobilized on the surface of a glass support (9,17,20,23,24).…”