Jump to main content
Jump to site search


Real-time measurement of constituents in solid materials using particle flow spark induced breakdown spectroscopy

Author affiliations

Abstract

This paper presents an analytical scheme that combines spark-induced breakdown spectroscopy with particle flow (PF-SIBS) for the real-time measurement of the constituents in powdered materials. With high voltage power supply instruments, a vibrational feeder and a spectrometer, the measuring system is low-cost and robust. To demonstrate its applicability, particle samples with varied carbon content were tested in LIBS and PF-SIBS for the comparison of their relative standard deviation (RSD), false spectra ratio, signal-to-noise ratio (SNR) and calibration results. The RSD of the C I 247.86 nm line in LIBS ranged from 35.72% to 62.51% for eight samples, while for PF-SIBS it ranged from 19.63% to 46.57%. The SNR of the Si I 288.15 nm was set as the index for the partial breakdown spectral identification and about 10% of the spectra were identified as false in LIBS, while all the spectra were identified as true spectra in PF-SIBS. The SNR of the C line in PF-SIBS was enhanced by 4 times as compared with LIBS. Since lines emitted from the tungsten electrode are inevitable, a correction method was employed to correct the interference between the C I 247.86 nm and W II 247.77 nm lines. The correlation coefficient, R2, of the linear multivariate calibration of LIBS was 0.957, while that of PF-SIBS was greater than 0.990 and can reach 0.995 after C–W interference correction. With interference correction in PF-SIBS, the average absolute error of the sample validation was 0.38% and the limit of detection (LOD) was 0.46%. These results demonstrate the feasibility of PF-SIBS as a powerful detection technology for the real-time measurement of the constituents in powdered materials and the interference correction can improve the measurement effect at low concentration.

Graphical abstract: Real-time measurement of constituents in solid materials using particle flow spark induced breakdown spectroscopy

Back to tab navigation

Publication details

The article was received on 15 Mar 2018, accepted on 23 Apr 2018 and first published on 24 Apr 2018


Article type: Paper
DOI: 10.1039/C8JA00075A
Citation: J. Anal. At. Spectrom., 2018, Advance Article
  •   Request permissions

    Real-time measurement of constituents in solid materials using particle flow spark induced breakdown spectroscopy

    S. Yao, J. Xu, X. Zhang, L. Zhang, Z. Lu and J. Lu, J. Anal. At. Spectrom., 2018, Advance Article , DOI: 10.1039/C8JA00075A

Search articles by author

Spotlight

Advertisements