摘要
建立了水中14种硝基氯苯的固相微萃取-便携气相色谱/质谱测定方法。探讨了固相微萃取涂层和萃取温度、萃取时间、磁力搅拌时间及解析时间等条件对硝基氯苯化合物萃取效率的影响。根据研究结果,确定萃取头为PDMS/DVB(65μm),萃取温度为60℃,磁力搅拌转速为200 r/min,萃取时间为50 min,解析时间为0.5 min。硝基氯苯类化合物的检出限为1.37~3.57μg/L,在0.01~0.50mg/L间线性良好。实际样品加标回收率为90.0%-115%,相对标准偏差为3.93%-6.73%。
This paper presented a method to determination of 14 kinds of nitrochlorobenzenes in water using SPME-portable GC/MS,investigating the effects such as the fiber,temperature,duration,stirring speed of extraction and releasing temperature.The optimized condition resulted from the experiment was：nitrochlorobenzenes to be extracted at 60 ℃ for 50 minutes using PDMS-DVB fiber of 65 m with a stirring speed of 200 r/min,and then the fiber was desorbed for 0.5 min in injector,and the limits of detection ranged from 1.37 to 3.57 μg/L with the fine linearity within the range of 0.01~0.50 mg/L.In addition,the spiked recoveries of practical samples were from 90.0%~115% and the relative standard deviations were between 3.93%and 6.73%.
出处
《环境科学与技术》
CAS
CSCD
北大核心
2017年第1期112-117,共6页
Environmental Science & Technology
基金
国家高技术研究发展计划(863计划):化学品暴露和效应评估及监测关键技术(2013AA06A308)
关键词
硝基氯苯
水样
固相微萃取
便携GC/MS
water
nitrochlorobenzenes
solid-phase micro-extraction（SPME）
portable GC/MS
