Abstract
This paper demonstrates the capabilities of laser-induced breakdown spectroscopy (LIBS) to perform quantitative multi-elemental analysis in phosphate slurries and pressed pellets. Fourteen phosphate powder samples were used in this study. 30 ml (12–13 g) of each phosphate powder sample were pelletized using an automated hydraulic press, and eleven slurries having a solid density of 30% (w/v) were prepared by mixing an appropriate quantity of powder and water. Samples were then analyzed by the Dual-LIBS instrument. A calibration model was generated for several elements contained in the samples, namely phosphorus, aluminum, iron, carbon, silicon, and magnesium, using a multivariate linear regression (MLR) method. The accuracy and reproducibility of the multivariate model were evaluated using independent validation samples sets. Correlation with R-squared of ~0.99 was found between the calculated and reference concentrations, which indicates that LIBS is a promising technique for the in situ rapid determination of the major elements present in solid and slurry phosphate samples.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
