Nonflame, source induced sulfur fluorescence detector for sulfur-containing compounds

Amperometric sulfur dioxide sensors using the gold deposited gas‐diffusion electrode

“…The former method is not portable because of the need for compressed supporting gases and the latter method is not suitable for routine measurements in the field due to its requirement of sample pretreatment. More recently, a UV fluorescene SO2 measurement technique [3] has been widely used for laboratory analysis as well as in stationary monitors for air pollution. However, the UV measurement is still too bulky to be portable.…”

Universal sulfur detection by chemiluminescence

“…Sensitive and selective detection of sulfur compounds is of considerable interest in a number of widely diverse fields (1-3). Nearly as diverse are the methodologies and detectors reported (4)(5)(6)(7)(8)(9). By far the most widely used sulfur-selective detector is the flame photometric detector (FPD), which has been reviewed thoroughly by Farwell and Barinaga (10).…”

Chemiluminescence sulfur detection in capillary supercritical fluid chromatography

“…The transient pyroelectric signal is completely absent and the bulk pyroelectric effect is delayed substantially. Crystalline PLZT is known to absorb strongly below 500 nm (9). The absorbed energy is possibly stored in a long-lived electronic state, the relaxation of which produces the delayed pyroelectric signal (10).…”

“…The absorbed energy is possibly stored in a long-lived electronic state, the relaxation of which produces the delayed pyroelectric signal (10). The identity of this electronic state, which may be due to an impurity in the ceramic (9), requires further investigation.…”