| Title: | Coupling of stir bar sorptive extraction with single photon ionization mass spectrometry for determination of volatile organic compounds in water |
| Author(s): | Cui H; Hua L; Hou K; Wu J; Chen P; Xie Y; Wang W; Li J; Li H; |
| Address: | "Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China" |
| ISSN/ISBN: | 1364-5528 (Electronic) 0003-2654 (Linking) |
| Abstract: | "A home-made stir bar sorptive extraction (SBSE) apparatus was combined to a single photon ionization time-of-flight mass spectrometer (SPI-TOFMS) for rapid and sensitive determination of trace volatile organic compounds (VOCs) in water. The home-made SBSE bar, low-cost and disposable, was used for VOCs extraction. A thermal desorption (TD) device was designed to desorb the analytes from the SBSE bar, and a high throughput interface was developed to transfer the analytes into the ionization chamber of the SPI-TOFMS. The combination of large extraction volume of SBSE bar, and the direct measurement power of SPI-TOFMS enable a short analysis time for VOCs in water with high sensitivity, for example the limits of detection (LODs) were in the range of 7.4-11.1 ng L(-1) for benzene, toluene, and p-xylene (BTX) within 15 min. BTX aqueous solutions were chosen to demonstrate the quantitative capability, the linear range was from 0.05 to 100 mug L(-1) and the correlation coefficients were better than 0.996. The proposed method was successfully applied for the analysis of VOCs in urban river water" |
| Notes: | "PubMed-not-MEDLINECui, Huapeng Hua, Lei Hou, Keyong Wu, Jing Chen, Ping Xie, Yuanyuan Wang, Weiguo Li, Jinghua Li, Haiyang eng England 2011/12/02 Analyst. 2012 Jan 21; 137(2):513-8. doi: 10.1039/c1an15876g. Epub 2011 Dec 1" |
