Degradation of 17α-methyltestosterone by hydroxyapatite catalyst

Abstract Fish farming is becoming a highly profitable economic activity and the rearing of fingerlings involves the practice of sex reversal for the production of species (male) using the hormone 17α-methyltestosterone (MT). This study analyzed the methodology for degradation of the hormone through solar and ultraviolet radiation using hydroxyapatite (HAP) as heterogeneous catalyst, synthesized by two different methods, with and without doping with nickel and copper. The results showed that MT hormone is degraded by ultraviolet or solar radiation, and accelerated in the presence of the HAP catalyst. In the presence of Fe (III) in the medium, the degradation rate of the hormone decreases. The method of HAP synthesis influences the degradation efficiency.摘要：鱼类养殖正成为一项高盈利性的经济活动，在鱼种培育过程中常采用性别逆转技术，借助激素17α-甲基睾酮（17α-methyltestosterone, MT）实现雄性个体的规模化生产。本研究以羟基磷灰石（hydroxyapatite, HAP）作为非均相催化剂，针对该激素的太阳光与紫外辐射降解方法展开分析；所用HAP通过两种不同方法合成，分别包含镍、铜掺杂与未掺杂两种制备情况。研究结果显示：MT激素可被紫外辐射或太阳光辐射降解，且在HAP催化剂存在时降解过程得到加速；当反应体系中存在三价铁（Fe(III)）时，该激素的降解速率会出现下降；HAP的合成方法会对降解效率产生显著影响。