info:eu-repo/semantics/article
Device for real-time monitoring of oil-in-water and suspended solids based on thermal lens spectrometry and light scattering
Fecha
2020-03Registro en:
Lacapmesure, Axel Mauro; Martinez, Oscar Eduardo; Kunik, Dario; Device for real-time monitoring of oil-in-water and suspended solids based on thermal lens spectrometry and light scattering; Optical Society of America; Applied Optics; 59; 13; 3-2020; D138-D147
1559-128X
2155-3165
CONICET Digital
CONICET
Autor
Lacapmesure, Axel Mauro
Martinez, Oscar Eduardo
Kunik, Dario
Resumen
A novel system suitable for simultaneous monitoring of both oil-in-water and suspended solids based on thermal lens spectroscopy and forward light scattering is presented. The technique measures the concentration of dissolved hydrocarbons and simultaneously detects single oil droplets and suspended particles separately. The device was tested with injection water samples from an on-field water treatment plant, and hydrocarbon concentrations were measured with a precision better than 5% in the range of up to 100 ppm, reaching resolutions as low as 0.03 ppm. Particle detection was tested with model samples of dyed and undyed polystyrene spheres acting as absorption and scattering centers, which simulated oil droplets and suspended solids, respectively. We show that particles of different sizes are distinguished by the magnitude of the perturbations introduced in the signals, and their concentrations can be measured independently of dissolved components.