AI Article Synopsis

  • A new technique using laser-induced breakdown spectroscopy (LIBS) was developed to monitor phosphorus levels in water for eutrophication assessment.
  • The method involved plasma amplification, which increased the plasma length and significantly improved the detection limit of phosphorus from around 6.13–17.75 ppm to 3.60 ppm.
  • The accuracy of the analysis also enhanced, with the average relative error dropping from approximately 10.23–23.84% to 6.17%, indicating better precision in detecting trace levels of phosphorus.

Article Abstract

For monitoring the extent of eutrophication in water, phosphorus (P) was detected by laser-induced breakdown spectroscopy (LIBS). A plasma amplification method was proposed and the filtered aerosol was guided to interact with the collinear laser in conjunction with a nebulizer, cyclonic spray chamber, and quartz tube. With this method, the length of the plasma was amplified from 5.27∼8.73 to 17.58 mm. Moreover, the limit of detection (LoD) values of P in water improved from 6.13∼17.75 to 3.60 ppm. Furthermore, the average relative error (RE) values reduced from 10.23∼23.84 to 6.17%. The root mean square error of cross-validation (RMSECV) values decreased from 16.68∼64.29 to 3.24 ppm. This demonstrated that plasma amplification LIBS could improve the quantitative analysis performance of LIBS detection of trace phosphorus in water.

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Source
http://dx.doi.org/10.1364/OE.502894DOI Listing

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