分析化学Issue(3)：333-337,5.DOI:10.11895/j.issn.0253-3820.140974
吹扫捕集-气相色谱-质谱联用测定天然水体中异戊二烯的研究
Purge-trap Gas Chromatography and Mass Spectrometric Method for Analysis of Isoprene in Natural Waters
摘要
Abstract
Gas chromatography with mass spectrum detector ( GC-MSD) coupled with purge-and-trap system was set up to analyze the concentration of isoprene in natural waters. The best experimental conditions were established, including purge gas flow rate ( 50 mL/min ) , purge time ( 15 min ) , the optimum capillary column ( Rt-Alumina BOND/KCl) and the appropriate condition of temperature programming. When analyzing isoprene in natural waters, the precision was <4% (n=6), the detection limit was 0. 5 pmol/L and the recovery was 91%-102%. The preservative experiment showed that there was no obvious variation in sample concentrations of isoprene within 60 days. The concentrations of isoprene measured with the method ranged from 60 . 8 to 278 . 7 pmol/L in the Jiaozhou Bay and its adjacent river estuaries and from 44 . 7 to 77 . 2 pmol/L in Yellow River estuary, which was in good accord with those results reported in literatures in other coastal waters. In conclusion, the analytical method could meet the requirements of the analysis of concentration of isoprene in natural waters.关键词
异戊二烯/吹扫捕集/气质联用/天然水体Key words
Isoprene/Purge and trap system/Gas chromatography-mass spectrometry/Natural water引用本文复制引用
张洪海,李建龙,杨桂朋,宋雨辰,靳娜..吹扫捕集-气相色谱-质谱联用测定天然水体中异戊二烯的研究[J].分析化学,2015,(3):333-337,5.基金项目
本文系国家自然科学基金(Nos.41306069,41030858)、教育部“长江学者”以及山东省“泰山学者”建设工程专项经费资助This work was supported by the National Natural Science Foundation of China ( Nos.41306069 and 41030858), the Changjiang Scholars Program, Ministry of Education of China, and the Taishan Scholars Program of Shandong Province, China （Nos.41306069,41030858）
