气相色谱-串联质谱法同时测定水中13种挥发性消毒副产物的方法研究Simultaneous Determination of Thirteen Kinds of Volatile Disinfection By-products in Water by Gas Chromatography-Tandem Mass Spectrometry
刘玉灿;王颖;朱玉良;纪现国;李伟;
摘要(Abstract):
基于气相色谱–三重四极杆质谱联用(GC-MS/MS)技术建立了同时测定水中13种挥发性消毒副产物(V-DBPs)的方法。采用GC-MS/MS鉴别了13种V-DBPs的前级离子和产物离子,优化了色谱和质谱参数,确定了4种典型样品预处理方法(液液萃取(LLE)、静态顶空(SH)、吹扫捕集(P&T)和固相微萃取(SPME))的最优操作参数,对比分析了其准确度和精密度。采用优化后的预处理方法和仪器参数,建立了测定13种目标物的标准曲线。当13种V-DBPs浓度为0.05~100μg/L时,4种预处理方法对应的方法精密度顺序为:SPME>SH>P&T>LLE。在地表水、地下水和自来水中分别添加2.5和25μg/L水平的V-DBPs混合标准样品时,4种预处理方法均具有较好的检测精密度,对应的方法准确度顺序为LLE、 P&T>SH>SPME。本研究基于GC-MS/MS的检测方法优于现有方法,可满足消毒剂处理后出水中13种V-DBPs的快速、准确测定要求。
关键词(KeyWords): 挥发性消毒副产物;气相色谱-串联质谱;液液萃取;静态顶空;吹扫捕集;固相微萃取
基金项目(Foundation): 山东省自然科学基金项目(Nos.ZR202103070178,ZR2017BEE016);; 国家自然科学基金项目(No.51609207);; 烟台大学科技项目(No.TM17B19)资助~~
作者(Authors): 刘玉灿;王颖;朱玉良;纪现国;李伟;
DOI: 10.19756/j.issn.0253-3820.210411
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