title: Spray Inlet Proton Transfer Reaction Mass Spectrometry (SI-PTR-MS) for Rapid and Sensitive Online Monitoring of Benzene in Water.
abstract: Rapid and sensitive monitoring of benzene in water is very important to the health of people and for environmental protection. A novel and online detection method of spray inlet proton transfer reaction mass spectrometry (SI-PTR-MS) was introduced for rapid and sensitive monitoring of trace benzene in water. A spraying extraction system was coupled with the self-developed PTR-MS. The benzene was extracted from the water sample in the spraying extraction system and continuously detected with PTR-MS. The flow of carrier gas and salt concentration in water were optimized to be 50 sccm and 20% (w/v), respectively. The response time and the limit of detection of the SI-PTR-MS for detection of benzene in water were 55 s and 0.14 μg/L at 10 s integration time, respectively. The repeatability of the SI-PTR-MS was evaluated, and the relative standard deviation of five replicate determinations was 4.3%. The SI-PTR-MS system was employed for monitoring benzene in different water matrices, such as tap water, lake water, and wastewater. The results indicated that the online SI-PTR-MS can be used for rapid and sensitive monitoring of trace benzene in water.
authors: Center of Medical Physics and Technology, Hefei Institutes of Physical Science, Chinese Academy of Sciences , Hefei, Anhui 230031, China.
authors: Xue
authors: X
authors: Zou
authors: Center of Medical Physics and Technology, Hefei Institutes of Physical Science, Chinese Academy of Sciences , Hefei, Anhui 230031, China.
authors: Meng
authors: M
authors: Kang
authors: Center of Medical Physics and Technology, Hefei Institutes of Physical Science, Chinese Academy of Sciences , Hefei, Anhui 230031, China.
authors: Aiyue
authors: A
authors: Li
authors: Center of Medical Physics and Technology, Hefei Institutes of Physical Science, Chinese Academy of Sciences , Hefei, Anhui 230031, China.
authors: Chengyin
authors: C
authors: Shen
authors: Center of Medical Physics and Technology, Hefei Institutes of Physical Science, Chinese Academy of Sciences , Hefei, Anhui 230031, China.
authors: Yannan
authors: Y
authors: Chu
mesh_terms: D001554:Benzene / Q000032:analysis*; D057230:Limit of Detection; D013058:Mass Spectrometry / Q000379:methods*; D011522:Protons; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D011522:Protons; D014874:Water Pollutants, Chemical; D001554:Benzene