Gallium is extracted in the presence of other metals from gallium bearing aqueous solutions, by contact with organic solvent containing N-organo hydroxamic acids, particularly at described acid and alkaline pH ranges; and recovered from the organic solvent. New gallium complexes and certain N-organo hydroxamic acids are also provided.  
                            通过与含有 N-有机羟
肟酸的有机溶剂接触,特别是在所述酸碱 pH 值范围内,在其他
金属存在的情况下,从含
镓水溶液中提取
镓,并从有机溶剂中回收
镓。还提供了新的
镓络合物和某些 N-有机羟
肟酸。