Laser microprobe mass analysis (LAMMA) and adsorption study of aliphatic alkylammonium ions and alkylamines on asbestos fibre surfaces

Abstract

The adsorption-desorption behaviour of aliphatic alkylamines for asbestos was studied. A high affinity and strong adsorption characteristics, controlled by Van der Waals interaction and steric hindrance were obtained. For the R.N€I-.CI (1 < n C 4) doped asbestos fibres, the laser microprobe mass analysis (LAMMA) technique was used to analyse selectively the individual asbestos surface loadings. Only for quaternary (and tertiary at higher concentrations) ammonium products, could a semi-quantitative picture of the organic asbestos surface covering be observed.

Laser microprobe mass analysis of plastic-contaminated asbestos fiber surfaces

“…In previous work it was shown that the use of laser desorption operating conditions (10)(11)(12)(13)(14)(15) in LAMMA results in the ready detection of adsorbed organic constituents. Benzidine, iV,jV-dimethylaniline (DMA), and benzo[a]pyrene (BaP) were adsorbed in the laboratory on the U.I.C.C.…”

“…Asbestos fibers can be held onto a Formvar film fixed to a standard copper electron microscope grid. Organic impurities adsorbed onto the surface of asbestos fibers can be detected at low laser irradiance, in the laser desorption (LD) mode (10)(11)(12)(20)(21)(22). For details on sample preparation for LAMMA analysis we refer to De Waele et al (11).…”

“…In this respect, compounds in tobacco smoke appear to be one of the more active (7). Becáuse of the hypothesis that the toxicity of the asbestos fibers is correlated with the adsorption power of carcinogenic organic pollutants or precursors of carcinogenic compounds (8,9), the intention of our asbestos research work is to characterize the fiber surface (10)(11)(12)(13)(14)(15).…”

An Infrared Spectroscopic Study of the Vapor Adsorption of Nitroglycerin and Pentaerythritol Tetranitrate on Chrysotile Asbestos

“…Chrysotile's adsorption of benzo [a]pyrene, a component of cigarette smoke with mutagenic and carcinogenic potential, has been studied extensively (Shabad et al 1974;Krivosheeval and Pylev 1974;Lakowicz and Bevan 1980;De Waele et al 1983a;Menard et al 1986aMenard et al , 1986bGerde and Scholander 1988;De Waele and Adams 1988). The chrysotile's adsorption of other polycyclic hydrocarbons (Menard et al 1986b;Craighead 1981, 1982;Fournier and Pezerat 1986), both aliphatic and aromatic amines (De Waele et al 1983a, 1983bDe Waele and Adams 1988;De Waele, Vansant, and Adams 1983), benzene (Gorski and Stettler 1975), and basic and acidic dyes -including picric acid (Valerio, Puntoni, and Santi 1979) -has also been investigated.…”