Use of cyclic animals of glyoxylic acid for trapping hydrogen sulphide.

摘要

P Application of a product of formula (I) BR/ (CF DRAWING IN BOPI) BR/ BR/ in which M represents a hydrogen, lithium, sodium or potassium atom, or an NH 4 group and n represents 2 or 3, as a hydrogen sulphide sensor, its use for the preparation of a hydrogen sulphide trapping composition and a method of removing hydrogen sulphide in a fluid. / P