Volume 50, Issue 5 (September 2005)

    Analysis of Glass Fragments by Laser Ablation-Inductively Coupled Plasma-Mass Spectrometry and Principal Component Analysis

    (Received 26 February 2005; accepted 26 April 2005)

    Published Online: August

    CODEN: JFSOAD

      Format Pages Price  
    PDF Version 5 $25   ADD TO CART


    Abstract

    Laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS) is used to differentiate glass samples with similar optical and physical properties based on trace elemental composition. Laser ablation increases the number of elements that can be used for differentiation by eliminating problems commonly associated with dissolution and contamination. In this study, standard residential window and tempered glass samples that could not be differentiated by refractive index or density were successfully differentiated by LA-ICP-MS. The primary analysis approach used is Principal Component Analysis (PCA) of the complete mass spectrum. PCA, a multivariate analysis technique, provides rapid analysis of samples without time-consuming pair-wise comparison of calibrated analyses or prior knowledge of the elements present in the samples. Probabilities for positive association of the individual samples are derived from PCA. Utilization of the Q-statistic with PCA allowed us to distinguish all samples within the set to a certainty greater than the 99% confidence interval.


    Author Information:

    Aeschliman, DB
    Iowa State University (ISU), Ames, Iowa

    Baldwin, DP
    Iowa State University (ISU), Ames, Iowa

    Saetveit, NJ
    Iowa State University (ISU), Ames, Iowa

    Houk, RS
    Iowa State University (ISU), Ames, Iowa

    Bajic, SJ
    Iowa State University (ISU), Ames, Iowa


    Stock #: JFS2005088

    ISSN: 0022-1198

    DOI: 10.1520/JFS2005088

    ASTM International
    is a member of CrossRef.

    Author
    Title Analysis of Glass Fragments by Laser Ablation-Inductively Coupled Plasma-Mass Spectrometry and Principal Component Analysis
    Symposium , 0000-00-00
    Committee E30