Investigations of a new sample compartment assembly for low-temperature and room-temperature solid substrate phosphorimetry

Effects of heavy atom containing surfactants in the room temperature phosphorescence of carbaryl

“…Finally, this technique is limited by the chemistry of hydride generation, which is subject to chemical, kinetic, and thermodynamic interferences. More study must be done into interferences caused from high concentrations of other ionic species such as iron and copper which may affect reagent reducing power (12).…”

“…Qualitative and semiquantitative analyses of the surface of filter papers treated with the heavy atom ion inorganic salts (T1N03 and AgN03) and the surfactant salts (T1DS and AgDS) are done through X-ray photoelectron spectroscopy (XPS) analysis (6). XPS has provided us with information concerning the relative amounts of heavy atom ions and luminescence compounds present on the surface of treated papers and on the extent of penetration of the compounds into the bulk of the filter paper (12). The results obtained from the surface analysis are correlated with the observed effects of the surfactants on the phosphorescence of carbaryl.…”

“…A 3-ííL aliquot of the carbaryl ethanolic solution (20 Mg/mL) is spotted onto a 1 cm diameter disk of Whatman No. 1 filter paper (12). The sample is dried under a stream of nitrogen for 20 min and RTF measurements are then performed.…”

Phosphorescence Properties of p-Aminobenzoic Acid Immobilized on a Nylon Membrane

“…In many cases the influence of several variables such as the presence of heavy atoms, surfactants, cyclodextrins, and polyacrylic acid was investigated. [3][4][5][6][7] Besides its use as a model compound, PABA is a vitamin found in plants and animal tissues. 8,9 It is often used as a sulfonamide antagonist and as a sunscreen agent, and also in cutaneous alterations such as alopecia.…”

Laser-induced phosphorescence spectrometry of halogenated naphthalene derivatives prepared in vapor-deposited parent molecule matrices

“…Virtually the entire laser beam (exclusing Fresnel losses, which are unavoidable) can be readily focused into a tiny spot inside the capillary orifice. Excellent sample selectivity and sensitivity have been reported for absorption (7), fluorescence (8,9), light scattering (70), refractive index (2, 77), and thermal lens (12) methods employing coherent laser light. Unfortunately, due to their relatively high degree of sophistication, laser-based detection methods are primarily suitable for research-oriented laboratories.…”