Comparative study of different methodologies for quantitative rock analysis by Laser-Induced Breakdown Spectroscopy in a simulated Martian atmosphere | INSTITUT DE PHYSIQUE DU GLOBE DE PARIS

Twitter

Aller au compte twitter

  Comparative study of different methodologies for quantitative rock analysis by Laser-Induced Breakdown Spectroscopy in a simulated Martian atmosphere

Type de publication:

Journal Article

Source:

Spectrochimica Acta Part B-Atomic Spectroscopy, Volume 61, Ticket 3, p.301-313 (2006)

ISBN:

0584-8547

Mots-clés:

CAPABILITIES; PROVINCE

Résumé:

Laser-Induced Breakdown Spectroscopy was selected by NASA as part of the ChemCam instrument package for the Mars Science Laboratory rover to be launched in 2009. ChemCam's Laser-Induced Breakdown Spectroscopy instrument will ablate surface coatings from materials and measure the elemental composition of underlying rocks and soils at distances from I up to 10 in. The purpose of our studies is to develop an analytical methodology enabling identification and quantitative analysis of these geological materials in the context of the ChemCam's Laser-Induced Breakdown Spectroscopy instrument performance. The study presented here focuses on several terrestrial rock samples which were analyzed by Laser-Induced Breakdown Spectroscopy at an intermediate stand-off distance (3 in) and in an atmosphere similar to the Martian one (9 mbar CO2). The experimental results highlight the matrix effects and the measurement inaccuracies due to the noise accumulated when low signals are collected with a detector system such as an Echelle spectrometer equipped with an Intensified Charge-Coupled Device camera. Three different methods are evaluated to correct the matrix effects and to obtain quantitative results: by using an external reference sample and normalizing to the sum of all elemental concentrations, by using the internal standardization by oxygen, a major element common to all studied matrices, and by applying the Calibration Free Laser-Induced Breakdown Spectroscopy method. The three tested methods clearly demonstrate that the matrix effects can be corrected merely by taking into account the difference in the amount of vaporized atoms between the rocks, no significant variation in plasma excitation temperatures being observed. The encouraging results obtained by the three methods indicate the possibility of meeting ChemCam project objectives for stand-off quantitative analysis on Mars. (c) 2006 Elsevier B.V. All rights reserved.

Notes:

Spectroc. Acta Pt. B-Atom. Spectr.ISI Document Delivery No.: 047CZTimes Cited: 1Cited Reference Count: 34Cited References:1981, HDB CHEM PHYS, E349ARP ZA, 2004, APPL SPECTROSC, V58, P897BRENNETOT R, 2003, APPL SPECTROSC, V57, P744BULAJIC D, 2002, SPECTROCHIM ACTA B, V57, P339BUSTAMANTE MF, 2002, SPECTROCHIM ACTA B, V57, P303CANTAGREL F, 1994, GEOSTANDARD NEWSLETT, V18, P123CASTLE BC, 1998, J ANAL ATOM SPECTROM, V13, P589CHALEARD C, 1997, J ANAL ATOM SPECTROM, V12, P183COLAO F, 2004, APPL PHYS A-MATER, V79, P143COLAO F, 2004, PLANET SPACE SCI, V52, P117CORSI M, 2000, RES ADV APPL SPECTRO, V1, P41CREMERS DA, 1987, APPL SPECTROSC, V41, P572EPPLER AS, 1996, APPL SPECTROSC, V50, P1175GODDARD BJ, 1991, T I MC, V13, P128GORNUSHKIN SI, 2002, APPL SPECTROSC, V56, P433HAKKANEN HJ, 1998, ANAL CHEM, V70, P4724KNIGHT AK, 2000, APPL SPECTROSC, V54, P331LOCHTEHOLTGREVE.W, 1968, PLASMA DIAGNOSTICS, P135LOGE G, 1997, 9715811, WOMAURICE S, 2005, LUN PLAN SCI C LUN P, V36, P1735MILAN M, 1998, APPL SPECTROSC, V52, P444PALANCO S, 2002, SPECTROCHIM ACTA B, V57, P591PALANCO S, 2003, J ANAL ATOM SPECTROM, V18, P933PALLESCHI V, 1999, 9949301, WOPANNE U, 1998, SPECTROCHIM ACTA B, V53, P1957POITRASSON F, 1994, CHEM GEOL, V112, P199POITRASSON F, 1995, J PETROL, V36, P1251POITRASSON F, 1998, B VOLCANOL, V60, P213RADZIEMSKI L, 2005, SPECTROCHIM ACTA B, V60, P237SALLE B, 2004, SPECTROCHIM ACTA B, V59, P1413SALLE B, 2005, SPECTROCHIM ACTA B, V60, P479SALLE B, 2005, SPECTROCHIM ACTA B, V60, P805XU N, 1997, ANAL CHEM, V69, P2103YAMAMOTO KY, 1996, APPL SPECTROSC, V50, P222