Coal isotope on-line detection system and method based on multi-wavelength coupling resonance enhancement

Abstract

The application relates to a coal isotope online detection system and method based on multi-wavelength coupling resonance enhancement, which comprises a laser generation unit configured to generate a pretreatment light beam and an excitation light beam, a light beam guiding unit configured to guide the pretreatment light beam and the excitation light beam to a coal sample surface in a fixed spatial relative position relationship, and a scanning assembly configured to drive the pretreatment light beam and the excitation light beam to synchronously scan on the sample surface, so that at any scanning position, the pretreatment light beam always acts on the same sample point before the excitation light beam, wherein the pretreatment light beam is configured to pretreat the sample point to reduce the matrix effect of subsequent spectrum detection; the excitation light beam comprises a resonance laser component, the wavelength of which matches the characteristic wavelength of an element to be detected, and the excitation light beam is configured to generate plasma on the pretreated sample point and perform resonance excitation to obtain enhanced radiation light.

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