title: Detection of third-hand smoke on clothing fibers with a surface acoustic wave gas sensor.
abstract: Third-hand smoke (THS) is a new cigarette-related issue defined as the residual contamination from cigarette smoke after a cigarette is extinguished. To detect THS on three commonly used clothing fibers-wool, cotton, and polyester, we applied two methods to measure the adsorption of THS: one was the gain of mass with an analytical balance after exposure to cigarette smoke; and the other was to detect the THS chemical compounds such as nicotine and 3-ethenylpyridine with a surface acoustic wave (SAW) sensor composed of coated oxidized hollow mesoporous carbon nanospheres. In the mass measurement, the gain of mass decreased in the order wool, cotton, and polyester; the latter gain was about one tenth that of wool. In the SAW detection, the frequency shift decreased in the same order-wool, cotton, and polyester. The residence period of THS on natural fiber (wool and cotton) is greater than on synthetic polyester fiber. These two tests provide quantitative results of THS on varied clothing fibers, to assess their risk after exposure to cigarette smoke.
authors.affiliation: Institute of NanoEngineering and MicroSystems, National Tsing Hua University , Hsinchu, Taiwan.
authors.forename: Chi-Yung
authors.initials: CY
authors.lastname: Cheng
authors.affiliation: Department of Chemistry, National Tsing Hua University , Hsinchu, Taiwan.
authors.forename: Shih-Shen
authors.initials: SS
authors.lastname: Huang
authors.affiliation: Department of Chemistry, National Tsing Hua University , Hsinchu, Taiwan.
authors.forename: Chia-Min
authors.initials: CM
authors.lastname: Yang
authors.affiliation: Department of Electrical Engineering, National Tsing Hua University , Hsinchu, Taiwan.
authors.forename: Kea-Tiong
authors.initials: KT
authors.lastname: Tang
authors.affiliation: Institute of NanoEngineering and MicroSystems, National Tsing Hua University , Hsinchu, Taiwan.
authors.forename: Da-Jeng
authors.identifier: 0000-0001-6631-780X
authors.initials: DJ
authors.lastname: Yao