Amodeo, Francesco

Baietto, Oliviero

Giorgis, Ilaria

Marini, Paola

Vitaliti, MARTINA MARIA

Zanetti, Giovanna

English

Oliviero Baietto

Francesco Amodeo

Ilaria Giorgis

Martina Vitaliti

Giovanna Zanetti

Paola Marini

PORTO@iris (Publications Open Repository TOrino - Politecnico di Torino)

04 August 2020POLITECNICO DI TORINORepository ISTITUZIONALEQuantitative determination of N.O.A.: towards a better methodology / Baietto, Oliviero; Amodeo, Francesco; Giorgis,Ilaria; Vitaliti, MARTINA MARIA; Zanetti, Giovanna; Marini, Paola. - (2019). ((Intervento presentato al convegno EGU2019 tenutosi a vienna.OriginalQuantitative determination of N.O.A.: towards a better methodologyPublisher:PublishedDOI:Terms of use:openAccessPublisher copyright(Article begins on next page)This article is made available under terms and conditions as specified in the  corresponding bibliographic description inthe repositoryAvailability:This version is available at: 11583/2733051 since: 2019-05-14T10:20:23ZGeophysical Research AbstractsGeophysical Research AbstractsVol. 21, EGU2019-15767-1, 2019EGU General Assembly 2019© Author(s) 2019. CC Attribution 4.0 license.Quantitative determination of N.O.A.: towards a better methodologyOliviero Baietto, Francesco Amodeo, Ilaria Giorgis, Martina Vitaliti, Giovanna Zanetti, and Paola MariniPolitecnico di Torino DIATI, DIATI, Torino, Italy (oliviero.baietto@polito.it)Due to the widespread presence of Naturally Occurring Asbestos that are currently being excavated for numerousconstruction projects (railway lines, motorways etc.), the problem of human exposure and the management ofcontaminated material are increasingly problems on the routinely agenda. Environmental NOA exposure is knownto cause several types of lung disease. Human health can be damaged by inhaling fibers when they becomeairborne due to weathering or human activities that produce dust. The production of huge amounts of naturalmaterial containing asbestos is a complex problem to deal with, particularly during tunneling opera or excavationworks. In this context, the quantitative determination of the content of asbestos in rock matrices, became extremelyimportant but is a complex operation that is susceptible to significant errors.During more of 15 years of activity of the Asbestos Laboratory of the Politecnico of Turin, thousands of naturalsamples have been examined: soils, rocks, rail ballast, talcs, etc. Morevore, in addition to the routinely work, inthe last 5 years of activity of monitoring and environmental analysis in the context of the tunneling opera of the“Terzo Valico” in the Ligurian Appennine, we had the opportunity to face with thousands of different samples,trying to develop the best possible methodology using different techniques analysis. The quantification of theasbestos content near the threshold defined by the current law in act of 1000 mg/Kg corresponding to the 0,1 % isa challenging problem that we have deal with:• Validation of PCOM methodology for quantitative determination of Naturally occurring asbestos concentration• SEM analysis and cross-referenced analysis with PCOM• Trials and experiments on the morphology variation of the crystalline habit of prismatic and fibrous amphibolessubjected to grinding testAlthough we are satisfied with the experience and results obtained, we believe it is necessary to continue todevelop the knowledge of the subject and to interface with other research groups. Several recent studies show thepotential use of other technologies.Thanks to regional co-financing, we are integrating MicroFTIR and MicroRaman in our Laboratory with thehope of growing a network of knowledge in this field as complex and fascinating as the asbestos presence in nature.

Quantitative determination of N.O.A.: towards a better methodology

https://iris.polito.it/retrieve/handle/11583/2733051/246163/EGU2019-baietto.pdf

Quantitative determination of N.O.A.: towards a better methodology

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