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Semiquantitative Chemical Analysis of Asbestos Fibers and Clay Minerals with an Analytical Electron Microscope

Published online by Cambridge University Press:  01 July 2024

Hisato Hayashi ,
Saburo Aita  and
Mikio Suzuki
Hisato Hayashi
Affiliation:
Research Institute of Underground Resources, Mining College, Akita University, Akita 010, Japan
Saburo Aita
Affiliation:
Application Department, JEOL Ltd., Nakagami, Akishima 196, Japan
Mikio Suzuki
Affiliation:
Application Department, JEOL Ltd., Nakagami, Akishima 196, Japan
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Abstract

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By using a transmission electron microscope equipped with an energy dispersive spectrometer, it was possible to detect the morphological, structural, and chemical characteristics of individual asbestos fibers and clay minerals without any realignment of the equipment. A rapid and convenient procedure for semiquantitative analysis is proposed. Analyses are given for 21 hydrous silicates, asbestos and clay minerals, by both ordinary chemical and energy dispersive methods. The energy dispersive results were comparable to those obtained by chemical analysis. Application of this procedure to asbestos fibers proved this method to be practical and valid for characterization of asbestos in environmental and tissue samples.

Резюме

Резюме

С помощью трансмиссионного электронного микроскопа, оборудованного рассеивающим энергию спектрометром, стало возможным определять морфологические, структурные и химические характеристики отдельных асбестовых волокон и глинистых минералов без повторной центровки оборудования. Приводятся данные анализов 21 водных силикатов, асбестов и глинистых минералов, полученных с помощью обычных химических и рассеивающих энергию методов. Результаты использования рассеивающих энергию методов были сопостовимы с результатами химических анализов. Применение этой процедуры для изучения асбестовых волокон доказало его практичность и пригодность для получения характеристики асбестов в природных и тканевых образцах.

Kurzreferat

Kurzreferat

Indem ein Transmission-Elektronen-Mikroskop, ausgestattet mit einem Energie-Streuungsspektrometer, benutzt wurde, war es möglich, die mor -phologischen, strukturellen und chemischen Eigenschaften von einzelnen Asbestfasern und Tonmineralien zu ermitteln, ohne die Apparatur wieder zu eichen. Eine schnelle und bequeme Methode für semi-quantitative Analyse wird vogeschlagen. Analysenresultate, erhalten durch allgemeine, chemische und Energie-Streuungsmethoden, für 21 wasserhaltige Silikate, Asbest und Tonmineralien sind angegeben. Die Resultate der Energie-Streuungsmethode waren vergleichbar mit denen, erhalten durch chemische Analyse. Anwendung dieser Prozedur auf Asbestfasern, hat bewiesen, daß diese Methode praktisch und brauchbar für die Charakterisierung von Asbest in Umwelt-und Gewebeproben ist.

Résumé

Résumé

Par l'emploi d'un microscope électronique à transmission équippé d’ un spectromètre dispersant l’énergie, il a été possible de détecter les caractéristiques morphologiques, structurales et chimiques de fibres d'asbeste individuelles et de minéraux argileux sans réaligner l’équipement. Un procédé rapide et commode pour l'analyse semi-quantitative est proposé. Des analyses sont données pour 21 silicates hydratées, asbestes et mineraux argileux, à la fois par des méthodes chimiques ordinaires et des méthodes dispersant l’énergie. Les résultats des méthodes dispersant l’énergie sont comparables à ceux obtenus par analyse chimique. L'application de ce procédé aux fibres d'asbeste prouvent que cette méthode est pratique et valable pour la caractérisation d'asbeste dans les échantillons de tissu et du milieu ambiant.

Keywords

AmphiboleAsbestosChrysotileMorphologyStructure
Type
Research Article
Information
Clays and Clay Minerals , Volume 26 , Issue 3 , June 1978 , pp. 181 - 188
Copyright
Copyright © 1978, The Clay Minerals Society

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