Application of SPE followed by large-volume injection GC/MS for the analysis of geosmin and 2-methylisoborneol in water

被引：13
|
作者：
Kim, Hyunook [1 ]
Hong, Youngmin [1 ]
Sang, Byung-In [2 ]
Sharma, Virender K. [3 ]
机构：
[1] Univ Seoul, Dept Energy & Environm Syst Engn, Seoul 130743, South Korea
[2] Hanyang Univ, Dept Biochem Engn, Seoul 133791, South Korea
[3] Texas A&M Univ, Sch Publ Hlth, Environm & Occupat Hlth, College Stn, TX 77843 USA
来源：
ANALYTICAL METHODS | 2015年 / 7卷 / 16期
关键词：
CHROMATOGRAPHY-MASS-SPECTROMETRY; BAR SORPTIVE EXTRACTION; OFF-FLAVOR COMPOUNDS; CAPILLARY GAS-CHROMATOGRAPHY; SOLID-PHASE MICROEXTRACTION; DRINKING-WATER; ODOROUS COMPOUNDS; TRILLION LEVEL; TRACE LEVELS; IN-SOURCE;
D O I：
10.1039/c5ay01138h
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
A new method comprising solid phase extraction (SPE) and subsequent large volume injection-gas chromatography/mass spectrometry (LVI-GC/MS) was developed to analyze 2-methylisoborneol (2-MIB) and geosmin in water. The method with an injection volume of 25 mu L showed a good linearity (i.e., R-2 > 0.999) over the concentration range of 0.5-20 ng L-1 and good repeatability and recovery. The MDLs of the method for 2-MIB and geosmin were determined as 0.87 and 0.62 ng L-1, respectively, which are lower than one tenth of the compounds' published odor thresholds (i.e., 5-10 ng L-1). If the injection volume was further increased, even lower MDLs could be obtained. In short, considering its ease of use, and high accuracy and sensitivity, the proposed SPE-LVI-GC/MS method can be easily applied for the routine analysis of the target compounds in water.
引用
收藏
页码：6678 / 6685
页数：8
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