Representative sampling using single-pulse laser ablation with inductively coupled plasma mass spectroscopy
Representative sampling using single-pulse laser ablation with inductively coupled plasma mass spectroscopy
复制标题
使用单脉冲激光烧蚀和电感耦合等离子体质谱进行代表性采样
DOI：
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发表时间：
2001
期刊：
影响因子：
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通讯作者：
R. Russo
中科院分区：
文献类型：
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作者：
Haichen Liu;X. Mao;R. Russo
使用单脉冲激光烧蚀和电感耦合等离子体质谱法进行代表性采样Haichen Liu 1，Xianglei Mao，Richard E.罗素劳伦斯伯克利国家实验室，伯克利，加州94720中国科学院广州地球化学研究所，广州，中国。中国，510640摘要单脉冲激光烧蚀取样电感耦合等离子体质谱（ICP-MS）进行了评估，准确的化学分析。研究了NIST 610玻璃在单脉冲烧蚀过程中的元素分馏（如Pb/U）、烧蚀质量（凹坑体积）、ICP-MS强度和粒子贡献（尖峰信号）。铅/铀分馏显着改变之间的第一和第二激光脉冲，并表现出强烈的辐照依赖性。第一次脉冲测得的Pb/U比值通常高于第二次脉冲测得的Pb/U比值，平均值接近代表水平。提出了激光烧蚀过程中的偏析来解释第一和第二脉冲之间的成分变化。陨石坑体积测量表明，第二个脉冲产生了显着更多的烧蚀质量。在约750 GW/cm 2处发生了陨坑深度的下降。第二个脉冲的绝对ICP-MS强度与陨石坑深度没有相关性。粒子诱导的尖峰上的过境信号表现出辐照度和元素种类的依赖性。信件应寄往：（电子邮件）rerusso@lbl.gov。
Representative sampling using single-pulse laser ablation with inductively coupled plasma mass spectrometry Haichen Liu 1 , Xianglei Mao, Richard E. Russo ∗ Lawrence Berkeley National Laboratory, Berkeley, California 94720 Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, P.R. China, 510640 Abstract Single pulse laser ablation sampling with inductively coupled plasma mass spectrometry (ICP-MS) was assessed for accurate chemical analysis. Elemental fractionation (e.g. Pb/U), the quantity of ablated mass (crater volume), ICP-MS intensity and the particle contribution (spike signal) during single pulse ablation of NIST 610 glass were investigated. Pb/U fractionation significantly changed between the first and second laser pulse and showed strong irradiance dependence. The Pb/U ratio obtained by the first pulse was usually higher than that of the second pulse, with the average value close to the representative level. Segregation during laser ablation is proposed to explain the composition change between the first and second pulse. Crater volume measurements showed that the second pulse produced significantly more ablated mass. A roll-off of the crater depth occured at ~750 GW/cm 2 . The absolute ICP-MS intensity from the second pulse showed no correlation with crater depth. Particle induced spikes on the transit signal showed irradiance and elemental species dependence. To whom correspondence should be addressed: (e-mail) rerusso@lbl.gov.