Determination of sulfide by evolution of hydrogen sulfide and absorption spectrometry in the gas phase

Abstract

The described method for the determination of sulfide in aqueous solution involves injection of the sample into acid and measurement of the transient absorption signal caused by evolved H2S at 200 nm. The flame of an atomic absorption spectrophotometer is replaced with a flow-through absorption cell. A convenient reaction vessel is used. The detection limit is 1.2 µg/mL S2". The standard deviation of repeated runs is 3% under optimum conditions. The effects of several experimental conditions are reported.

Rapid determination of sulfide sulfur in anaerobic system by gas-phase molecular absorption spectrometry

“…16,18 In their studies, the relative error of Cu 2+ on the determination of S 2À was about À100%, which was identical with the result of adding excess Cu 2+ into a working standard solution of S 2À . 16,18 In their studies, the relative error of Cu 2+ on the determination of S 2À was about À100%, which was identical with the result of adding excess Cu 2+ into a working standard solution of S 2À .…”

“…Therefore, Ag + , Other scholars have also observed the deleterious effect of Cu 2+ on the determination of S 2À . 16,18 In their studies, the relative error of Cu 2+ on the determination of S 2À was about À100%, which was identical with the result of adding excess Cu 2+ into a working standard solution of S 2À . However, À93.4% of relative error is displayed in the determination of the fermentation broth (see Table 6).…”

“…16 Cresser described an automated method for the determination of sulde in solution that involved the interfacing of an automatic sampler, a proportioning pump and a gas-liquid separator to an atomic absorption spectrometer. In the past decades, some dedicated scholars have upgraded the structure of the instrument, optimized the conditions of determination and studied the effects of different interference ions.…”

“…A convenient reaction vessel was used for gas-liquid separation. 16 Cresser described an automated method for the determination of sulde in solution that involved the interfacing of an automatic sampler, a proportioning pump and a gas-liquid separator to an atomic absorption spectrometer. 17 Moreover, optimization of experimental conditions was also studied.…”

Atomic line molecular analysis for multicomponent determinations in the gas phase

“…In the past, little analytical üse has been made of ultraviolet and vacuum ultraviolet molecular absorption spectroscopy. Syty et al detected sulfite, sulfide, ammonium ion, iodide, and bromide in liquid samples by converting these ions to the gaseous species S02, H2S, NH3, I2, and Br2 and measuring the ultraviolet or visible molecular absorption (11)(12)(13)(14)(15)(16)(17)(18). Fuwa and Vallee detected S02 by using flame absorption at 207 nm (19).…”