TY - JOUR KW - Performance KW - Material KW - Ablation KW - Laser KW - Laser ablation KW - Laser ablation KW - Analysis KW - Time KW - Beam KW - Glass KW - Glasses KW - Icp-ms KW - Icp-ms KW - Icp-ms KW - Mass KW - Mass spectrometry KW - Mass spectrometry KW - Matrix KW - Plasma KW - Plasma mass spectrometry KW - Plasma-mass spectrometry KW - Sample KW - Samples KW - Sampling KW - Spectrometry KW - Dependence KW - Signal KW - Single KW - Pulsed laser KW - Pulsed laser KW - Nm KW - Laser beam KW - 213 nm KW - 213 nm laser ablation icp-ms KW - Ablation icp-ms KW - Accuracy KW - Analytical performance KW - Glass standard KW - Glass standard reference materials KW - Icp-ms analysis KW - Laser ablation icp-ms KW - Laser ablation icp-ms KW - Nist KW - Nist glass KW - Precision KW - Reference material KW - Reference materials KW - Scan KW - Series KW - Standard KW - Standard reference materials KW - Strategies KW - Strategy AU - Jhanis J Gonzalez AU - Alberto J Fernández AU - Xianglei Mao AU - Richard E Russo AB -

Sampling strategy is defined in this work as the interaction of a repetitively pulsed laser beam with a fixed position on a sample (single spot) or with a moving sample (scan). Analytical performance of these sampling strategies was compared by using 213 nm laser ablation ICP-MS. A geological rock (Tuff) was quantitatively analyzed based on NIST series 610-616 glass standard reference materials. Laser ablation data were compared to ICP-MS analysis of the dissolved samples. The scan strategy (50 mmys) produced a flat, steady temporal ICP-MS response whereas the single spot strategy produced a signal that decayed with time (after 60 s). Single-spot sampling provided better accuracy and precision than the scan strategy when the first 15 s of the sampling time was eliminated from the data analysis. In addition, the single spot strategy showed less matrix dependence among the four NIST glasses.

AN - 161 BT - Spectrochim.Acta Pt.B-At.Spec. C2 - LBNL-56155 LA - eng LB - Laser N1 -

LBNL-56155 IN FILE

N2 -

Sampling strategy is defined in this work as the interaction of a repetitively pulsed laser beam with a fixed position on a sample (single spot) or with a moving sample (scan). Analytical performance of these sampling strategies was compared by using 213 nm laser ablation ICP-MS. A geological rock (Tuff) was quantitatively analyzed based on NIST series 610-616 glass standard reference materials. Laser ablation data were compared to ICP-MS analysis of the dissolved samples. The scan strategy (50 mmys) produced a flat, steady temporal ICP-MS response whereas the single spot strategy produced a signal that decayed with time (after 60 s). Single-spot sampling provided better accuracy and precision than the scan strategy when the first 15 s of the sampling time was eliminated from the data analysis. In addition, the single spot strategy showed less matrix dependence among the four NIST glasses.

PY - 2004 SP - 369 EP - 374 T2 - Spectrochim.Acta Pt.B-At.Spec. TI - Scanning vs. single spot laser ablation (213 nm) inductively coupled plasma mass spectrometry VL - 59 ER -