TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The first degradation inhibitor compound is sulfite compound of formula (Mx(SO3)) and a bisulfite compound of formula (M1(HSO3)z). The second degradation inhibitor compound is triazole compounds of formula (a)-(f) and tetrazole compounds of formula (g)-(i). The absorbent solution (I) comprises: 10-99 wt.% of amine, 1-90 wt.% of water, 5 ppm to 10 wt.% of first degradation inhibitor compound and 5 ppm to 5 wt.% of second degradation inhibitor compound. The absorbent solution (I) further comprises: 5 ppm and 5 wt.% of a corrosion inhibitor compound. The first degradation inhibitor compound is sodium sulfite (preferred), potassium sulfite, ammonium sulfite, magnesium sulfite, sodium bisulfite, magnesium bisulfite and ammonium bisulfite and second degradation inhibitor compound is 1,2,4-triazole-3-thiol, 5-phenyl-1H-1,2,4-triazole-3-thiol, 5(4-pyridyl)-1H-1,2,4-triazole-3-thiol, 5(3-pyridyl)-1H-1,2,4-triazole-3-thiol, 4-methyl-4H-1,2,4-triazole-3-thiol, 4-methyl-5(2-thienyl)-4H-1,2,4-triazole-3-thiol, 4-methyl-5(3-thienylmethyl)-4H-1,2,4-triazole-3-thiol, 4-cyclohexyl-5-sulfanyl-4H-1,2,4-triazol-3-ol, 3-amino-1,2,4-triazole-5-thiol, 4-amino-4H-1,2,4-triazole-3,5-dithiol, (1,2,4)triazolo(4,3-a) pyridine-3-thiol, 1H-5-mercapto-1,2,3-triazole, 1-methyl-1H-tetrazole-5-thiol, 1-ethyl-1H-tetrazole-5-thiol, 1-phenyl-1H-tetrazole-5-thiol, 1-(4-hydroxyphenyl)-1H-tetrazole-5-thiol, 5-mercapto-1-tetrazoleacetic acid, 1(2(dimethylamino) ethyl)-1H-tetrazole-5-thiol, 3-amino-5-methylthio-1H-1,2,4-triazole, 5-(methylthio)-1H-tetrazole, 5-(ethylthio)-1H-tetrazole, 1-methyl-5(methylthio)-1H-tetrazole, 4-phenyl-4H-1,2,4-triazole-3-thiol, 5-methyl-4H-1,2,4-triazole-3-thiol, 5-(trifluoromethyl)-2,4-dihydro-3H-1,2,4-triazole-3-thiol, 4-isopropyl-4H-1,2,4-triazole-3-thiol and their salts, preferably the second degradation inhibitor compound is 1H-1,2,4-triazole-3-thiol, 5-phenyl-1H-1,2,4-triazole-3-thiol, 5(4-pyridyl)-1H-1,2,4-triazole-3-thiol, 5(3-pyridyl)-1H-1,2,4-triazole-3-thiol, sodium salt of 4-methyl-4H-1,2,4-triazole-3-thiol, 4-methyl-4H-1,2,4-triazole-3-thiol, 5-methyl-4H-1,2,4-triazole-3-thiol, 4-isopropyl-4H-1,2,4-triazole-3-thiol, 4-phenyl-4H-1,2,4-triazole-3-thiol, 1-methyl-1H-tetrazole-5-thiol, or 1-(2-(dimethylamino)ethyl)-1H-tetrazole-5-thiol. The amine is N,N,N',N',N"-pentamethyldiethylenetriamine, piperazine, monoethanolamine (preferred), diethanolamine, methyldiethanolamine, diisopropanolamine, diglycolamine, 2-amino-2-methyl-1-propanol, glycine salt or taurine salt. The corrosion inhibitor compound is sodium metavanadate. The absorbent solution comprises at least 39 wt.% of monoethanolamine.M = H, alkaline metal cation, alkaline-earth metal cation, metal, ammonium or phosphonium;x = 1-4;M1 = alkaline metal cation, alkaline-earth metal cation, metal, ammonium or phosphonium;z = 1-6;R1 = H, 1-12C hydrocarbon group or amine group formula (-NR4R5) (aa);R4, R5 = H or 1-12C hydrocarbon group;R2, R3 = -S-X, H, OH, amine group (aa), or 1-12C carbon group;X = H, alkaline element or alkaline-earth element, a monovalent or multivalent metal, ammonium cation NH4+ or resulting from the protonation of amine function, phosphonium cation, 1-12C hydrocarbon group or group comprising thiyl-triazole, thio-triazole, thiyl-tetrazole and thio-tetrazole.Preferred Process: In the process, the gaseous effluent comprises at least 500 ppm by volume of oxygen. EXAMPLE - None given.