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Wednesday, November 11, 2020 | History

4 edition of Definitions for asbestos and other health-related silicates found in the catalog.

Definitions for asbestos and other health-related silicates

a symposium

by

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Published by American Society for Testing and Materials in Philadelphia, Pa .
Written in English

    Subjects:
  • Asbestos -- Toxicology -- Congresses.,
  • Silicates -- Toxicology -- Congresses.,
  • Asbestos -- Standards -- Congresses.,
  • Silicates -- Standards -- Congresses.,
  • Asbestos -- congresses.,
  • Asbestos -- terminology.,
  • Public Health -- congresses.,
  • Silica -- congresses.,
  • Silica -- terminology.

  • Edition Notes

    Statementsponsored by ASTM Committee D-22 on Sampling and Analysis of Atmospheres and ASTM Committee E-34 on Occupational Health and Safety, Philadelphia, Pa., 13 Oct. 1982 ; Benjamin Levadie, editor.
    SeriesASTM special technical publication ;, 834
    ContributionsLevadie, Benjamin., ASTM Committee D-22 on Sampling and Analysis of Atmospheres., ASTM Committee E-34 on Occupational Health and Safety.
    Classifications
    LC ClassificationsRA1231.A8 D44 1984
    The Physical Object
    Pagination213 p. :
    Number of Pages213
    ID Numbers
    Open LibraryOL3193350M
    ISBN 100803102097
    LC Control Number83072557

    Asbestos was known as a “wonder fiber” until the mids. It was known for a variety of uses throughout construction and manufacturing companies. It was flexible and strong, resistant to heat and corrosion, and inexpensive. Because asbestos was so heat resistant, it was included in calcium silicate insulation and became a sought after. Silicate definition: A silicate is a compound of silica which does not dissolve. There are many different | Meaning, pronunciation, translations and examples.


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Definitions for asbestos and other health-related silicates Download PDF EPUB FB2

Definitions for asbestos and other health-related silicates: a symposium. [Benjamin Levadie; ASTM Committee D on Sampling and Analysis of Atmospheres.; ASTM Committee E on Occupational Health and Safety.;]. Levadie, ed., Definitions for Asbestos and Other Health-Related Silicates.

STP addresses the need for clarification of terminology used to refer to groups of minerals; namely asbestos, silica, and talc. The specific minerals in each group are defined, along with their impact on human health. Definitions for asbestos and other health-related silicates: a symposium.

[Benjamin Levadie; ASTM Committee D on Sampling and Analysis of Atmospheres.; ASTM Committee E on Occupational Health and Safety. STP Definitions for Asbestos and Other Health-Related Silicates addresses the need for clarification of terminology used to refer to groups of minerals; namely asbestos, silica, and talc.

The specific minerals in each group are defined, along with their impact on human health. This publication, Definitions for Asbestos and Other Health-Related Silicates, contains papers presented at the symposium on The Need for Specific Definitions for Health-Related Minerals, which was held on 13 Oct.

at ASTM Head- quarters in Philadelphia, Pa. The sponsors of this symposium were ASTM Com. Asbestos () is the generic term used to describe over 30 different types of naturally occurring hydrated silicates representing two mineral groups (serpentine and amphiboles) that separate into fibres on mechanical processing.

While the exact taxonomy continues to evolve, the sole serpentine variety is called chrysotile () while the amphiboles include five forms. Definition for Asbestos and Other Health Related Silicates This book presents a concise and up-to-date account of the physical, chemical and mineralogical properties of the asbestos Author: Robert Virta.

Tabulation of Asbestos-Related Terminology By Heather Lowers and Greg Meeker asbestos and other health-related silicates: ASTM Special Technical Publicationp. 5- Clifton, R.A.,A definition for asbestos in Levadie, B. ed., Definitions for asbestos and other health-related silicates: ASTM Special Technical Publicationpp File Size: KB.

Definitions for silica minerals were presented, based on discussions held during a workshop on the subject. The definitions were designed to include sufficient description of the chemical and physical properties to distinguish a specimen from other species, to contain commonly available methods of property measurement, and to describe species with a likelihood of human exposure.

Clays and micas are sheet silicates, as are serpentine minerals. One type (the most commonly used) of asbestos minerals, chrysotile, is a serpentine mineral, thus a sheet silicate; other types of asbestos are double chain silicates (amphiboles).

b) Asbestos is an amphibole silicate. c) Talc and mica are examples of silicates with chain structures.

d) Zeolites are aluminosilicates. e) Some silicates contain discrete molecular ions. Hint: Talc and mica are sheet or phyllo silicates. 2) (SiO 3) n 2n-may be the empirical formula of: a) Cyclic silicates. Materials of High Vacuum Technology, Volume 2: Silicates covers silicate insulators of special importance to vacuum technology.

The book discusses the manufacture, composition, and physical and chemical properties of technical glasses, quartz glass, quartzware, vycor glass, ceramic materials, mica, and Edition: 1.

asbestos [as-bes´tos] fibrous calcium and magnesium silicate, a nonburning compound used in roofing materials, insulation for electric circuits, brake linings, and many other products that must be fire resistant. Alternative materials are being developed to replace asbestos because fine asbestos fibers can be inhaled, causing asbestosis, pleural.

Definition of Asbestos Fibers. Asbestos is the name given to a number of mineral silicates. The name asbestos does not refer to a distinct mineral species but it is a commercial term applied to fibrous varities of several minerals differing widely in composition, strength, flexibility, and usefulness.

Figure Levadie, ed., Definition for Asbestos and Other Health Related Silicates, ASTM STPAmerican Society for Testing and Materials, Philadelphia, Pa., VIEW 4 EXCERPTS. Asbestos International Association,Method for the determination of airborne asbestos fibres and other inorganic fibres by scanning electron microscopy, AIA Health and Safety Publication, Recommended Technical Method No.

2 (RTM2), Asbestos International Association, 68 Gloucester Place, London, W1H 3HL, by: 2. Cossette, Marcel,Defining asbestos particulates for monitoring purposes, in Levadie, Benjamin, ed., Definitions for asbestos and other health-related silicates: Philadelphia, Penn., American Society for Testing and Materials, ASTM Special Technical Publicationp Asbestos (pronounced: / æ s ˈ b ɛ s t ə s / or / æ s ˈ b ɛ s t ɒ s /) is a term used to refer to six naturally occurring silicate minerals.

All are composed of long and thin fibrous crystals, each fiber being composed of many microscopic 'fibrils' that can be released into the atmosphere by abrasion and other ry: Silicate minerals. Silicates are well characterized as solids, but are less commonly observed in solution.

The anion SiO 4 4-is the conjugate base of silicic acid, Si(OH) 4, and both are elusive as are all of the intermediate d, solutions of silicates usually observed as mixtures of condensed and partially protonated silicate clusters.

Full text of "Selected Silicate Minerals and Their Asbestiform Varieties: Mineralogical Definitions and Identification – Characterization" See other formats 1 * A^"^ ~ J Jy ^ '•»" A ^^ ^ v* °^ A ',o- ^0. silicate minerals and their asbestiform varieties−Mineralogical definitions and identification-characterization: U.S.

Bureau of Mines Information Circular IC, 56 p. Churchill, R.K., and Hill, R.L.,A general location guide for ultramafic rocks in California−Areas more likely to contain naturally occurring asbestos: Sacramento,File Size: 2MB. Silicates definition, any of the largest group of mineral compounds, as quartz, beryl, garnet, feldspar, mica, and various kinds of clay, consisting of SiO2 or SiO4 groupings and one or more metallic ions, with some forms containing hydrogen.

Silicates constitute well over 90 percent of the rock-forming minerals of the earth's crust. See more. Define silicates. silicates synonyms, silicates pronunciation, silicates translation, English dictionary definition of silicates.

The most plentiful group of rock-forming minerals, usually consisting of silicon and oxygen combined with a metal. asbestos; atomic number 40; thesaurus, literature, geography, and other reference data is for.

Asbestos that is swallowed may cause cancer of the gastrointestinal tract. Definition (MSH) Asbestos. Fibrous incombustible mineral composed of magnesium and calcium silicates with or without other elements.

It is relatively inert chemically and. Chrysotile asbestos is the fibrous form of the mineral lizardite of the serpentine group of minerals. Its chemical formula is Mg 3 [Si 2 O 5 ](OH) 4 with some Fe2+ substituting for Mg.

The amount of iron substitution affects the refractive indices and the birefringence. silicate: (sil'i-kāt), 1. A salt of silicic acid. The term sometimes applied to dental restorations of synthetic porcelain. Definition/Function: Tremolite asbestos is a fibrous amphibole with the chemical composition Ca 2 Mg 5 [Si 8 O 22](OH) 2.

It is one of the more hazardous asbestos minerals. Levadie, Benjamin (ed), DEFINITIONS FOR ASBESTOS AND OTHER HEALTH-RELATED SILICATES, ASTM STP6. Riordon, P. (ed), GEOLOGY OF ASBESTOS DEPOSITS. Silicates constitute more than 75 percent of the earth’s crust (with quartz, approximately 87 percent) and more than 95 percent of all igneous rocks.

The class includes approximately mineral species, among them such important rock-forming minerals as feldspars, pyroxenes, amphiboles, and micas. Modem classification of silicates.

Asked in Books and Literature, Definitions Benjamin Levadie has written: 'Definitions for Asbestos and Other Health-Related Silicates' Asked in English Language, Definitions.

silicate materials occurring naturally as fibrous rocks. Insignificant amounts of asbestos fiber can be found in ambient air, but this, and materials containing hard asbestos, usually do not create problems.

Soft materials, however, can release high amounts of asbestos fibers into the air, and exposure to high levels of theFile Size: KB. Any of several fibrous mineral forms of magnesium silicate.

Asbestos is resistant to heat, flames, and chemical action. Some forms have been shown to cause lung diseases. For this reason, asbestos is no longer used to make insulation, fireproofing material, and brake linings. ASTM Committee E on Occupational Health and Safety.; Symposium on the Need for Specific Definitions for Health-related Minerals,( Philadelphia, Pa.) Title(s): Definitions for asbestos and other health-related silicates: a symposium/ sponsored by ASTM Committee D on Sampling and Analysis of Atmospheres and ASTM Committee E on.

Asbestos body counts and asbestos fiber analysis: Formalin-fixed lung tissue (not tumor or plaque) is used for these studies, which have an important role in the determination of the causation of mesothelioma. Asbestos bodies (asbestos fibers with an iron-protein coat and visible in by light microscopy), are quantified after digestion and.

"A Definition for Asbestos", Definitions of Asbestos and Other Health-Related Silicates, ASTM STPB. Levadie, ed., American Society for Author: Drew Van Orden.

Definition: Asbestos is the generic name given to a commercially and legally defined group of six naturally occurring fibrous silicate minerals that have been widely used in commercial products.

Asbestos is composed of silicate chains bonded with magnesium, iron, calcium, aluminum, and sodium or trace elements to form long, thin, separable fibrils. Actinolite Definition/Function: Actinolite asbestos is a fibrous amphibole with the chemical composition Ca 2 (Mg,Fe) 5 [Si 8 O 22](OH) 2.

It is one of the more hazardous asbestos minerals. Levadie, Benjamin (ed), DEFINITIONS FOR ASBESTOS AND OTHER HEALTH-RELATED SILICATES, ASTM STP6. Riordon, P. (ed), GEOLOGY OF ASBESTOS.

Define silicate. silicate synonyms, silicate pronunciation, silicate translation, English dictionary definition of silicate. Any of numerous compounds containing silicon, oxygen, and one or more metals; a salt of silicic acid.

asbestos; atomic number 40; augite; medical, or any other. Introduction. Several studies have reported a positive association between use of talcum powder on the perineal area and ovarian cancer risk (1, 2).Inthe International Agency for Research on Cancer (IARC) classified perineal use of talc as a possible carcinogen ().In a meta-analysis, data from 16 studies suggested that talc may increase ovarian cancer risk by 30% ().Cited by: Asbestos (ăsbĕs`təs, äz'bĕstōs`), town ( pop.

6,), SE Que., Canada. Asbestos was formerly mined in the area. Manufactures include wood products and electrical os, common name for any of a variety of silicate minerals within the amphibole and serpentine groups that are fibrous in structure and more or less resistant to acid. Silicate definition is - a salt or ester derived from a silicic acid; especially: any of numerous insoluble often complex metal salts that contain silicon and oxygen in the anion, constitute the largest class of minerals, and are used in building materials (such as cement, bricks, and glass).

NIOSHTIC-2 Publications Search. In addition to asbestos, coal, and silica, a wide variety of other mineral species may give rise to pneumoconiosis, industrial bronchitis, interstitial lung injury, or obstructive airway disease. A number of specific silicates and other dusts reported to cause respiratory diseases are reviewed in this.In the U.S.

Environmental Protection Agency (EPA) issued an official guideline on the prevention of asbestos disease among auto mechanics. In the EPA guideline, malignant mesothelioma was listed as a consequence of exposure to asbestos fibers from brake linings and clutch facings among auto by: Ross M () A survey of asbestos-related disease in trades and mining occupations and in factory and mining communities as a means of predicting health risks of nonoccupational exposure to fibrous minerals.

In: Levadie B (ed) Definitions for asbestos and other health-related silicates.