本文建立了高效液相色谱-串联质谱法(HPLC-MS/MS)来检测水中BMAA,并以次氯酸钠为消毒剂进行模拟氯化,研究BMAA的氯化降解及环境因子对BMAA降解的影响.结果表明,采用亲水交换作用色谱柱建立的HPLC-MS/MS分析方法,样品前处理过程简单易操作,在2-500 μg·L-1范围内线性关系良好(R2=0.9995),且检出限低(0.2μg·L-1).在常规条件下(Cl∶N=2∶1,T=20℃,pH=7),BMAA能通过氯化得到有效降解,2h降解率达到80％,6h降解率达到97％;低的C1:N,低温及碱性条件下,BMAA的降解率显著降低.研究结果为饮用水预氯化及氯化消毒去除BMAA提供了理论依据.
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