Catalytic determination of sulfide in blood

Abstract

A catalytic method, based on the iodine-azide reaction, of the determination of sulfide in whole human blood is described. The method involves generation of hydrogen sulfide in an evolution-absorption apparatus by addition of sulfuric acid and subsequent trapping of the generated hydrogen sulfide in sodium hydroxide solution. The catalytic method allows the determination of sulfide without any interference from other sulfur compounds present in blood. A linear calibration graph was obtained over the range 1 x 10(-6)-5 x 10(-4) mol dm-3 sulfide and the proposed method is compared with an ion-selective electrode method.

The catalytic activity of vanadium pentoxide film modified electrode on the electrochemical oxidation of hydrogen sulfide in alkaline solutions

“…Many environmental and industrial regulatory bodies recognize H 2 S as a poisonous and corrosive gas [1][2][3].…”

A submicron mesoporous silica for the determination of organosulphur in sea water

“…Some of these activates are fossil fuel combustion, the use of fungicides, pesticides, fertilizers in agriculture and in the effluents from the paper industry [8][9][10][11][12][13]. The naturally occurring sulphur cycle is well known and it has been described in the literature [10,[14][15][16]. Acid rain can be caused by the large pollution of sulphur dioxide and nitrogen oxide [10,17].…”

“…The naturally occurring sulphur cycle is well known and it has been described in the literature [10,[14][15][16]. Acid rain can be caused by the large pollution of sulphur dioxide and nitrogen oxide [10,17]. They react with the atmospheric water to produce acids.…”

Direct Introduction of Water Sample in Multisegmented Flow-Injection Analysis for Sulfide Determination

“…1,2 In the form of H2S, sulfide can be found as a result of the decomposition of the organic matter, and also as the result of sulfate reduction. 3 Several methods for sulfide determination are described, including volumetric, 4 spectrophotometric, 5,6 chromatographic, [7][8][9][10][11] chemiluminescence, 12,13 catalytic, 14,15 fluorescence, 16,17 potentiometric, 18,19 amperometric 20,21 and polarographic 22 methods. However, for environmental samples, in order to ensure dependable results, procedures for pretreating samples are necessary; and this is usually the most difficult and time-consuming stage.…”