Detection of trace phosphorus in steel using laser-induced breakdown spectroscopy combined with laser-induced fluorescence

Journal Article · Fri May 01 00:00:00 EDT 2009 · Applied Optics

DOI:https://doi.org/10.1364/AO.48.002551· OSTI ID:22036365

Shen, X K; Wang, H; Xie, Z Q; Gao, Y; Ling, H; Lu, Y F

Monitoring of light-element concentration in steel is very important for quality assurance in the steel industry. In this work, detection in open air of trace phosphorus (P) in steel using laser-induced breakdown spectroscopy (LIBS) combined with laser-induced fluorescence (LIF) has been investigated. An optical parametric oscillator wavelength-tunable laser was used to resonantly excite the P atoms within plasma plumes generated by a Q-switched Nd:YAG laser. A set of steel samples with P concentrations from 3.9 to 720 parts in 10{sup 6}(ppm) were analyzed using LIBS-LIF at wavelengths of 253.40 and 253.56 nm for resonant excitation of P atoms and fluorescence lines at wavelengths of 213.55 and 213.62 nm. The calibration curves were measured to determine the limit of detection for P in steel, which is estimated to be around 0.7 ppm. The results demonstrate the potential of LIBS-LIF to meet the requirements for on-line analyses in open air in the steel industry.

• OSTI ID: 22036365
• Journal Information: Applied Optics, Vol. 48, Issue 13; Other Information: (c) 2009 Optical Society of America; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6935
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CALIBRATION
EXCITATION
FLUORESCENCE
FLUORESCENCE SPECTROSCOPY
LASER SPECTROSCOPY
LITHIUM FLUORIDES
METAL INDUSTRY
NEODYMIUM LASERS
PARAMETRIC OSCILLATORS
PHOSPHORUS
PLASMA
PLASMA PRODUCTION
QUALITY ASSURANCE
SPECTRA
STEELS
VISIBLE RADIATION
WAVELENGTHS