TY - JOUR KW - Particle KW - USA KW - CO KW - Efficiency KW - Material KW - Ablation KW - Laser KW - Laser ablation KW - Laser ablation KW - Analysis KW - Time KW - Ablation efficiency KW - Analysis of solids KW - Ca KW - Ceo2 KW - Ceramic KW - Composition KW - Dissolution KW - E KW - Element KW - Form KW - Fractionation KW - Glass KW - Glasses KW - Homogeneity KW - Icp-ms KW - Icp-ms KW - Icp-ms KW - Impurities KW - Inductively coupled plasma (icp) KW - Inductively coupled plasma mass spectrometry KW - Inductively-coupled plasma KW - Laser ablation inductively coupled plasma mass KW - Liquid KW - Mass KW - Mass spectrometer KW - Mass spectrometry KW - Mass spectrometer KW - Mass spectrometry KW - Matrix KW - Nebulization KW - Paper KW - Pellet KW - Plasma KW - Plasma mass spectrometry KW - Plasma-mass spectrometry KW - Powders KW - Precise KW - Pressed pellets KW - River KW - Sample KW - Samples KW - Sampling KW - Solid sample introduction KW - Solids KW - Spectrometer KW - Spectrometry KW - Trace-elements AU - Oleg V Borisov AU - Christopher J Bannochie AU - Richard E Russo AB -

Successful Pu disposition by immobilization in glass or ceramic form requires accurate and precise knowledge of impurity amounts. Analysis of Pu material by conventional liquid nebulization requires dissolution, which is difficult due to the refractory nature of the samples. Laser ablation is a suitable sampling technique for direct analysis of solids. This paper demonstrates the procedures that were established for PuO2 analysis using laser ablation inductively coupled plasma mass spectrometer (ICP-MS). Pressed pellets prepared from CeO2 were used to simulate PuO2. Effects of laser conditions, sample preparation, and matrix composition, specifically mass of a matrix element and color, on the analyses of CeO2, Bi2O3, and PtO2 based pressed pellets were examined. Influence of mixing/grinding time on particle sizes, sample homogeneity, and ablation efficiency were investigated. Laser conditions that produce stoichiometric sampling were examined.

AD -

Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA Lawrence Livermore Natl Lab, Livermore, CA 94550 USA Westinghouse Savannah River Co, Aiken, SC 29808 USA

AN - 135 BT - Applied Spectroscopy C2 - LBNL-48422 LA - eng LB - Laser N1 -

LBNL-48422 NOT IN FILE

N2 -

Successful Pu disposition by immobilization in glass or ceramic form requires accurate and precise knowledge of impurity amounts. Analysis of Pu material by conventional liquid nebulization requires dissolution, which is difficult due to the refractory nature of the samples. Laser ablation is a suitable sampling technique for direct analysis of solids. This paper demonstrates the procedures that were established for PuO2 analysis using laser ablation inductively coupled plasma mass spectrometer (ICP-MS). Pressed pellets prepared from CeO2 were used to simulate PuO2. Effects of laser conditions, sample preparation, and matrix composition, specifically mass of a matrix element and color, on the analyses of CeO2, Bi2O3, and PtO2 based pressed pellets were examined. Influence of mixing/grinding time on particle sizes, sample homogeneity, and ablation efficiency were investigated. Laser conditions that produce stoichiometric sampling were examined.

PY - 2001 SP - 1304 EP - 1311 T2 - Applied Spectroscopy TI - Laser ablation inductively coupled plasma mass spectrometry of pressed pellet surrogates for Pu materials disposition VL - 55 ER -