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首页> 外文期刊>Applied optics >Detection of trace phosphorus in steel using laser-induced breakdown spectroscopy combined with laser-induced fluorescence
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Detection of trace phosphorus in steel using laser-induced breakdown spectroscopy combined with laser-induced fluorescence

机译：激光诱导击穿光谱结合激光诱导荧光检测钢中的痕量磷

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摘要

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~(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.
机译：监视钢铁中的微量元素浓度对于钢铁行业的质量保证非常重要。在这项工作中，已研究了结合激光诱导击穿光谱法（LIBS）和激光诱导荧光（LIF）在露天条件下检测钢中痕量磷（P）的方法。光参量振荡器波长可调激光器用于共振激发由Q开关Nd：YAG激光器产生的等离子体羽流中的P原子。使用LIBS-LIF在253.40和253.56 nm波长下分析了一组P含量为10〜（6）（ppm）的3.9至720份钢样品，以共振激发P原子和荧光线在213.55和213.62波长纳米测量校准曲线以确定钢中P的检出限，估计约为0.7 ppm。结果表明，LIBS-LIF有潜力满足钢铁行业露天在线分析的要求。

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