Determination of 2-methylisoborneol and geosmin in drinking water using headspace solid phase micro-extraction coupled with gas chromatography-mass spectrometry

2015 ◽  
Vol 33 (12) ◽  
pp. 1287 ◽  
Author(s):  
Jianguo CHENG ◽  
Kaiying LIU ◽  
Mindong BAI ◽  
Chao CHENG ◽  
Yixuan YU ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Drinking Water ◽  
Solid Phase ◽  
Gas Chromatography Mass Spectrometry ◽  
Solid Phase Micro Extraction ◽  
Chromatography Mass Spectrometry

Determination of the Odorous Compounds in the Source of Drinking Water by Solid-Phase Microextraction and Gas Chromatography-Mass Spectrometry

2011 ◽  
Vol 356-360 ◽  
pp. 951-954
Author(s):  
Na Xu ◽  
Jing Liu ◽  
Jian Guang Liu ◽  
Nan Wang ◽  
Feng Lu
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Drinking Water ◽  
High Efficiency ◽  
Solid Phase ◽  
Practical Method ◽  
Gas Chromatography Mass Spectrometry ◽  
Chromatography Mass Spectrometry ◽  
Odorous Compounds

A simple, rapid, sensitive and high-efficiency method for determ-ination of odorous compounds such as 2-methylisobomeol (2-MIB) and trans-1,10-dimethyl-trans-9-decalol (Geosmin) in the source of drinking water was developed by solid-phase microe- xtraction(SPME) followed by gas chromatography-mass spectrometry(GC-MS). In this study, various of SPME conditions have been optimized in detail. The results show that DVB/CAR/ PDMS fiber was found to possess the best extraction efficiency for the odorous compounds in water. SPME was carried out by using 25mL samples, addition of 6 g NaCl, stirring at 1150 rpm and temperature at 80°C for 15 min to enrich the target analytes. After that, the fiber was desorbed at 250°C for 2min and determined by GC-MS. 2-MIB and GSM were separated within 15 min using a HP-5MS capillary column and detected in the selective ion monitoring mode. The optimized method has been proved with excellent linearity and precision. Using this method, the calibration curves of 2-MIB and GSM were linear in the range of 10-500 ng/L, and the correlation coefficients were both above 0.9984. The detection limits (S/N=3) of 2-MIB and GSM were 1.2 and 0.9 ng/L, respectively. The optimized SPME was proved to be a very practical method for determination of the trace odorous compounds in the source of drinking water and applied with satisfactory results.

Sign in / Sign up

Export Citation Format

Share Document