Identification of materials in oil paintings through studies of correlations and ratios between the element line intensities during LIBS stratigraphy

On the study of paintings' stratigraphy by fs-LIBS and MA-XRF techniques

“…54 In comparison, our measurement on the same paint layer is approximately 60 mm. Other studies, 30,33,55,56 reported diameters in various paint layers that where near or above 100 mm. At this point we can make a rough estimation of the amount of pigment that is removed by each laser pulse.…”

Rapid quantitative analysis of petroleum coke properties by laser-induced breakdown spectroscopy combined with random forest based on a variable selection strategy

“…Therefore, the research on ash content, volatile matter, and caloric value holds signicant importance in guiding the rational, clean, and efficient utilization of petroleum coke. 7,8 Analysis of the petroleum coke properties can be conducted through direct property determination or elemental content analysis. Direct property determination method covers traditional high-temperature calcination and oxygen bomb calorimetry method, and rapid techniques such as X-ray, g-ray and microwave methods.…”