To detect heavy metal contents in fruits rapidly, the Citrus Nanfeng tangerines pericarp and flesh have been analyzed by laser induced breakdown spectroscopy. Line emissions from five heavy metal elements, Pb, Cd, Hg,Cr and As, have been clearly extracted. Their intensities correspond to relative concentrations of these elements contained in the analyzed samples. The results demonstrated that t...

This paper reports the LIBS studies on elemental composition detection and identification by employing a femtosecond (fs) fiber laser. High quality LIBS spectra were obtained in air using near-infrared fs fiber laser coupled with a broadband high sensitivity spectrometer without gating control. Specific ion and neutral emission lines of different materials have been characterized by line scanni...

It is shown that the continuous background of the laser-induced breakdown spectrum of Al produced by 800 nm femtosecond pulses is strongly polarized. Use of a polarizer to filter out the background significantly improves the signal/noise and signal/background ratios of the discrete line spectrum. The effects of the laser pulse energy, focal position, incidence and detection angles, and the pola...

Abstract The paper considers an approach to monitoring the condition of treated surface in real time based on laser-induced breakdown spectroscopy technique. As a result study, aluminum alloy was cleaned from plimer coating, spectral analysis carried out, relationship between processing modes and thickness coating being removed experimentally established, which allows removing paint one pass wi...

Microplastics contamination in drinking water is a growing concern globally as reported recent papers. Here we report an investigation on the identification and classification of microplastics present bottled using Laser induced breakdown spectroscopy, Raman spectroscopy. Different brands from different manufacturers were sampled for this Kenya. Rapid polymer types presence was done with Laser-...