title: Portable Dielectric Barrier Discharge-Atomic Emission Spectrometer.
abstract: This paper describes the first demonstration of a portable dielectric barrier discharge-atomic emission spectrometer (DBD-AES). The instrument primarily consists of a miniature electro-thermal vaporizer (ETV), DBD, and optical signal acquisition units. It weighs only 4.5 kg and is powered by a 24 V DC battery with a maximum power consumption of 37 W. The accompanying software can be operated on a laptop computer. A specially designed quartz tube integrates the ETV unit with the DBD chamber. The effects of experimental parameters were investigated. The limit of detection (LOD) for mercury was 0.4 μg L-1(1.2 pg) with a sampling volume of 3 μL. The instrument is applicable for multielement analysis, and the LODs ranged from 0.16 to 11.65 μg L-1for Zn, Pb, Ag, Cd, Au, Cu, Mn, Fe, Cr, and As. The instrument was also validated by in-field analysis of seawater samples. The experimental results demonstrated the sensitivity, reliability, and practicality of the instrument.
authors.forename: Na
authors.initials: N
authors.lastname: Li
authors.affiliation: School of Space Science and Physics, Shandong University at Weihai , Weihai, 264209 People's Republic of China.
authors.forename: Zhongchen
authors.initials: Z
authors.lastname: Wu
authors.forename: Yingying
authors.initials: Y
authors.lastname: Wang
authors.forename: Jing
authors.initials: J
authors.lastname: Zhang
authors.forename: Xiangnan
authors.initials: X
authors.lastname: Zhang
authors.forename: Hengnan
authors.initials: H
authors.lastname: Zhang
authors.forename: Wenhai
authors.initials: W
authors.lastname: Wu
authors.forename: Jing
authors.initials: J
authors.lastname: Gao
authors.forename: Jie
authors.identifier: 0000-0001-9182-335X
authors.initials: J
authors.lastname: Jiang