| http://www.w3.org/ns/prov#value | - The at least one alkaline agent is for example chosen from ammonia, carbonates and bicarbonates of alkali metals and such as sodium or potassium, alkanolamines such as mono-, di- and triethanolamines and their derivatives, hydroxyalkylamines and ethoxylated and propoxylated ethylenediamines, hydroxides of sodium and of potassium, amino acids and for example basic amino acids such as arginine and l
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