کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6968822 | 1453013 | 2018 | 38 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Assessment of the potential hazard represented by natural raw materials containing mineral fibres-The case of the feldspar from Orani, Sardinia (Italy)
ترجمه فارسی عنوان
ارزیابی خطر بالقوه ای که توسط مواد خام طبیعی حاوی الیاف معدنی نشان داده می شود - مورد فلدسپات از اورانی، ساردینیا (ایتالیا)
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
بهداشت و امنیت شیمی
چکیده انگلیسی
This work describes the nature of the potentially hazardous fibrous amphibole found in the Orani's feldspar mine (Sardinia, Italy). To identify its nature, a protocol of analysis including morphometric, chemical and crystallographic characterizations was applied. Thanks to this approach, it was possible to classify the observed fibres as tremolite after comparing chemical data, SEM/TEM observations, FTIR/ Raman spectra and X-ray diffraction data with those reported for a standard sample. The unit cell parameters of the investigated tremolite phase are aâ¯=â¯9.82(1) Ã
, bâ¯=â¯18.08(3) Ã
, câ¯=â¯5.27(1) Ã
, and the angle β corresponds to 104.4(1)°. The mean concentration of asbestos tremolite in the Orani's feldspar is 0.28â¯wt%. Most of the fibres (0.26â¯wt%) are respirable 'regulated' fibres, representing a potential hazard. Because the total amount of tremolite in the sample is 0.6 wt%, a large fraction of it has a crystal habit other than fibrous-asbestiform or acicular. The obtained results allowed us to suggest possible solutions for a safe exploitation and mineral processing of the Orani's mine. The procedure proposed herein may be a general tool suitable to identify the mineralogical nature of fibrous minerals in raw materials and assess if they may represent a potential health/environmental hazard.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Hazardous Materials - Volume 350, 15 May 2018, Pages 76-87
Journal: Journal of Hazardous Materials - Volume 350, 15 May 2018, Pages 76-87
نویسندگان
Alessandro F. Gualtieri, Nicola Bursi Gandolfi, Simone Pollastri, Roberta Rinaldi, Orietta Sala, Giovanni Martinelli, Tiziana Bacci, Federica Paoli, Alberto Viani, Ruggero Vigliaturo,