title: Determination of cobalt in low-alloy steels using laser-induced breakdown spectroscopy combined with laser-induced fluorescence.
abstract: Cobalt element plays an important role for the properties of magnetism and thermology in steels. In this work, laser-induced breakdown spectroscopy combined with laser-induced fluorescence (LIBS-LIF) was studied to selectively enhance the intensities of Co lines. Two states of Co atoms were resonantly excited by a wavelength-tunable laser. LIBS-LIF with ground-state atom excitation (LIBS-LIFG) and LIBS-LIF with excited-state atom excitation (LIBS-LIFE) were compared. The results show that LIBS-LIFG has analytical performance with LoD of 0.82μg/g, R(2) of 0.982, RMSECV of 86μg/g, and RE of 9.27%, which are much better than conventional LIBS and LIBS-LIFE. This work provided LIBS-LIFG as a capable approach for determining trace Co element in the steel industry.
authors.affiliation: Wuhan National Laboratory for Optoelectronics (WNLO), Huazhong University of Science and Technology, Wuhan, Hubei 430074, P. R. China.
authors.forename: Jiaming
authors.initials: J
authors.lastname: Li
authors.affiliation: Wuhan National Laboratory for Optoelectronics (WNLO), Huazhong University of Science and Technology, Wuhan, Hubei 430074, P. R. China.
authors.forename: Lianbo
authors.initials: L
authors.lastname: Guo
authors.affiliation: Wuhan National Laboratory for Optoelectronics (WNLO), Huazhong University of Science and Technology, Wuhan, Hubei 430074, P. R. China.
authors.forename: Nan
authors.initials: N
authors.lastname: Zhao
authors.affiliation: Wuhan National Laboratory for Optoelectronics (WNLO), Huazhong University of Science and Technology, Wuhan, Hubei 430074, P. R. China.
authors.forename: Xinyan
authors.initials: X
authors.lastname: Yang
authors.affiliation: Wuhan National Laboratory for Optoelectronics (WNLO), Huazhong University of Science and Technology, Wuhan, Hubei 430074, P. R. China.
authors.forename: Rongxing
authors.initials: R
authors.lastname: Yi
authors.affiliation: Wuhan National Laboratory for Optoelectronics (WNLO), Huazhong University of Science and Technology, Wuhan, Hubei 430074, P. R. China.
authors.forename: Kuohu
authors.initials: K
authors.lastname: Li
authors.affiliation: Wuhan National Laboratory for Optoelectronics (WNLO), Huazhong University of Science and Technology, Wuhan, Hubei 430074, P. R. China.
authors.forename: Qingdong
authors.initials: Q
authors.lastname: Zeng
authors.affiliation: Wuhan National Laboratory for Optoelectronics (WNLO), Huazhong University of Science and Technology, Wuhan, Hubei 430074, P. R. China. Electronic address: xyli@mail.hust.edu.cn.
authors.forename: Xiangyou
authors.initials: X
authors.lastname: Li
authors.affiliation: Wuhan National Laboratory for Optoelectronics (WNLO), Huazhong University of Science and Technology, Wuhan, Hubei 430074, P. R. China.
authors.forename: Xiaoyan
authors.initials: X
authors.lastname: Zeng
authors.affiliation: Department of Electrical and Computer Engineering, University of Nebraska, Lincoln, NE, 68588-0511, USA.
authors.forename: Yongfeng
authors.initials: Y
authors.lastname: Lu
keywords: Cobalt; Laser-induced breakdown spectroscopy; Laser-induced fluorescence; Steel