Determination of elements in polymers by laser ablation inductively coupled plasma atomic emission spectrometry: effect of the laser beam wavelength, energy and masking on the ablation threshold and efficiency

摘要: Abstract The application of laser ablation inductively coupled plasma atomic emission spectrometry (LA-ICP-AES) to the direct determination solid inorganic additives in polymeric materials has been studied. use a Nd:YAG laser, operating at both infrared (IR) (1064 nm) and ultraviolet (UV) (355 266 wavelengths, investigated for poly(vinylidene fluoride) (PVDF), poly(vinyl chloride) (PVC) poly(ethylene) (PE) materials. In order obtain reliable conditions, emphasis was placed on control experimental parameters understanding laser-surface interaction characteristics. It shown that, low energies, threshold process characterized by swelling surface takes place, accounting rims surrounding craters. This dependent not only energy, but also wavelength. eliminate formation find most reproducible it that UV radiation beam masking offer better process, leading satisfactory relative standard deviation estimated ablated mass (6.4%) signal obtained ICP-AES (in 2%–5% range). established optimum energy is frame 6 mJ (10 J cm −2 ) 10 (14 nm. Erosion rate, linearity against time PVDF, PVC PE, titanium calibration graph matrix are then briefly discussed illustrate technique's analytical potential.