高效液相色谱法测定空气中甲醛、乙醛及丙烯醛  

Determination of Formaldehyde, Acetaldehyde and Acrolein in Air Using High Performance Liquid Chromatography

作　　者：杨品[1] 韦桂欢[1] 龙庆云[1] 王晓利[1] 陈巍[1] 李占强[1] 

机构地区：[1]中国船舶重工集团公司第七一八研究所,河北邯郸056027

出　　处：《舰船防化》2015年第1期35-39,共5页

摘　　要：建立了一种利用高效液相色谱．二极管阵列检测器测定空气中甲醛、乙醛及丙烯醛的分析方法。该法以负载2，4．二硝基苯肼（DNPH）的硅胶采样，醛类化合物被富集转化为醛一DNPH衍生物，以醛一DNPH的特征吸收波长和色谱峰保留时间进行定性分析，并采用标准曲线法进行定量测定。实验研究了DNPH硅胶采样管的制备方法、优化了液相色谱分析条件。该方法可同时分析三种目标化合物，平均回收率为78％～110％，甲醛、乙醛、丙烯醛检出限分别为1．30gg／m3、2．20μg／m3、2．44μg／m3，可用于密闭环境空气中微量甲醛、乙醛及丙烯醛的检测。A new method using high performance liquid chromatography-diode array detector was developed for the determination of formaldehyde, acetaldehyde and acrolein in air. Aldehydes were absorbed in 2, 4-dinitrophenylhydrazine （DNPH） supported on silica gel and converted into aldehyde-DNPH derivatives. The qualitative analysis was carried out according to the characteristic absorption wavelength and the chromatographic retention time of aldehyde-DNPH, and the quantitative value was determined by standard curve method. The preparation of DNPH-silica gel adsorbent tubes was studied. The HPLC analysis conditions were optimized. This method realizes simultaneous determination of three target compounds. The average recovery of this method was 78%- 110%. The detection limit of formaldehyde, acetaldehyde and acrolein was 1.30 μg/m3, 2.20 μg/m3, 2.44 μg/m3 respectively. This method can be used to determine of formaldehyde, acetaldehyde and acrolein in air of closed＇environment.

关 键 词：甲醛 乙醛 丙烯醛 高效液相色谱法 测定 

分 类 号：O659.21[理学—分析化学]