title: A vinyl acetate sensor based on cataluminescence on MgO nanoparticles.
abstract: A novel cataluminescence (CTL) sensor using nanosized MgO as the sensing material for determination of the trace of vinyl acetate in air was proposed in the present study. Eight catalysts were examined and the results showed that the CTL intensity on MgO nanoparticles was the strongest. Under the optimized conditions, the linear range of the CTL intensity versus the concentration of vinyl acetate vapor was 2-2000 ppm with a detection limit of 1.0 ppm (3sigma) and a relative standard deviation (R.S.D.) of 1.18% for five times determination of 1000 ppm vinyl acetate. There were no CTL emissions when foreign substances, including ammonia, benzene, acetic acid, formaldehyde and ethyl acetate, passed through the sensor. CTL emissions were detected for methanol, ethanol and acetaldehyde at levels around 5.5%, 10.1% and 13.4% compared with the responsed vinyl acetate. The sensor had a long lifetime more than 100 h.
authors.affiliation: Environmental Science and Engineering Institute, Guangzhou University, Guangzhou, China.
authors.forename: Chen Chou
authors.initials: CC
authors.lastname: Wu
authors.forename: Xiaoan
authors.initials: X
authors.lastname: Cao
authors.forename: Qiang
authors.initials: Q
authors.lastname: Wen
authors.forename: Zehua
authors.initials: Z
authors.lastname: Wang
authors.forename: Qianqian
authors.initials: Q
authors.lastname: Gao
authors.forename: Huichang
authors.initials: H
authors.lastname: Zhu
mesh_terms: D008163:Luminescent Measurements; D053758:Nanoparticles; D014753:Vinyl Compounds
chemical_list: D014753:Vinyl Compounds; C011566:vinyl acetate