Determination of sulfur dioxide in stack gases by ultraviolet absorption spectrometry

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

“…A convenient reaction vessel is described. Similar apparatus has been used by the author and co-workers for the determination of sulfite evoled as S02 (14,15) and of iodide and bromide evolved as I2 and Br2 (16). Similar determi-nations of nitrate (17) and of the ammonium ion (18) have recently been reported by other workers.…”

Determination of sulfur in biological samples using high-resolution molecular absorption spectrometry in a graphite furnace with direct solid sampling

“…The first attempts to determine sulfur by molecular absorption spectrometry (MAS) date back to the early 1970s, when Syty 20 and Winkler and Syty 21 investigated the absorption bands of SO 2 , studies that were later extended to the H 2 S molecule by Cresser and Isaacson. 22 These investigations were carried out using a kind of chemical vapor generation at room temperature in a reaction flask and MAS of a cold gas.…”

Determination of cyanide by conversion to ammonia and ultraviolet absorption spectrometry in the gas phase

“…In that work, an atomic absorption spectrophotometer was modified to function as a convenient nonflame molecular absorption spectrophotometer, a glass reaction vessel was used to evolve ammonia, and measurements of transient absorbance were made in the gas phase. Similar apparatus and approach have also been used by one of the authors and co-workers in the determination of nitrite evolved as NOCI (5), of sulfide evolved as H2S (6), of sulfite evolved as S02 (7,8), and of iodide and bromide evolved as I2 and Br2 (9). The purpose of the present paper is to report a direct, rapid, and sensitive method for the determination of cyanide using the same technique.…”