Department of Analytical Chemistry, National Institute of Chemistry, Hajdrihova 19, 1000, Ljubljana, Slovenia.
Department of Analytical Chemistry, National Institute of Chemistry, Hajdrihova 19, 1000, Ljubljana, Slovenia.
Talanta. 2021 Dec 1;235:122785. doi: 10.1016/j.talanta.2021.122785. Epub 2021 Aug 4.
Elemental LA-ICPMS mapping in continuous scanning mode gathers the counts generated upon laser ablation in line scanning mode. Acquisition of counts can be performed for each single laser pulse separately or by summing the counts of multiple laser pulses. Conventionally, pixels in an LA-ICPMS map are associated with spot-resolved single laser pulses (zero-dimensional, 0D), but also sub-pixel convolution strategies are in use, associated with one-dimensional (1D) or two-dimensional (2D) overlapping laser shots, and where possible followed by deblurring. The imaging quality of several 0D, 1D, and 2D LA-ICPMS strategies were compared for mapping of (ultra)low-concentration samples, both via computational and experimental approaches. The data presented will be helpful to make the right decision about the best possible LA-ICPMS mapping strategy for the highest image quality.
元素的激光剥蚀-电感耦合等离子体质谱（LA-ICPMS）连续扫描模式在逐点扫描模式下采集激光剥蚀产生的计数。可以对每个单个激光脉冲进行计数采集，也可以对多个激光脉冲的计数进行求和。通常，LA-ICPMS 图谱中的像素与点分辨的单个激光脉冲相关联（零维，0D），但也使用子像素卷积策略，与一维（1D）或二维（2D）重叠的激光射击相关联，并且在可能的情况下进行去模糊处理。通过计算和实验方法，对（超）低浓度样品的mapping 比较了几种 0D、1D 和 2D LA-ICPMS 策略的成像质量。所呈现的数据将有助于为获得最高质量的图像做出关于最佳 LA-ICPMS mapping 策略的正确决策。
