Mineral fibres and environmental monitoring:A comparison of different analytical strategies in New Caledonia  

作　　者：Jasmine Rita Petriglieri Christine Laporte-Magoni Peggy Gunkel-Grillon Mario Tribaudino Danilo Bersani Orietta Sala Monika Le Mestre Ruggero Vigliaturo Nicola Bursi Gandolfi Emma Salvioli-Mariani 

机构地区：[1]Institute of Exact and Applied Sciences,Universitéde la Nouvelle Calédonie,Campus de Nouville,BP R4,98851,Nouméa Cedex,New Caledonia,France [2]Department of Chemistry,Life Sciences and Environmental Sustainability,University of Parma,Parco Area delle Scienze 157/A,I-43124 Parma,Italy [3]Department of Mathematical,Physical and Computer Sciences,University of Parma,Parco Area delle Scienze 7/A,I-43124 Parma,Italy [4]Arpae Emilia Romagna,Sezione Provinciale di Reggio Emilia,Centro Regionale Amianto,Via Amendola 2,I-42122,Reggio Emilia,Italy [5]Department of Earth and Environmental Science,University of Pennsylvania,240 S.33rd Street,Hayden Hall,Philadelphia,PA 19104-6316,USA [6]Department of Chemical and Geological Sciences,University of Modena and Reggio Emilia,Via Università4,I-41125,Modena,Italy

出　　处：《Geoscience Frontiers》2020年第1期189-202,共14页地学前缘（英文版）

基　　金：supported by the CNRT "Nickel and its environment" of New Caledonia

摘　　要：Covered by ultrabasic units for more than a third of its surface,the New Caledonia(South West Pacific)is one of the largest world producers of Ni-ore from lateritic deposits.Almost all outcrops of geological units and open mines contain serpentine and amphibole,also as asbestos varieties.In this geological context,in which weathering processes had a great contribution in the production and dispersion of mineral fibres into the environment,the development of a routinely analytical strategy,able to discriminate an asbestiform fibre from a non-harmful particle,is a pivotal requisite.However,the acquisition of all these parameters is necessary for determining the risk associated to fibres exposition.A multidisciplinary routinely approach,based on the use of complementary simply-to-use but reliable analytical methods is the only possible strategy.In addition,the instrumental apparatus must be easily transportable on the field,directly on the mining site.The employment of specialized tools such as Polarized Light Microscopy associated to Dispersion Staining method(PLM/DS)and portable Raman spectroscopy for identification of environmental asbestos,are proved extremely effective in the improvement of the performance and rapidity of data acquisition and interpretation.Both PLM/DS and handheld Raman devices confirmed to be discriminant in the detection and characterization of asbestos fibres for both serpentine and amphibole.Furthermore,these techniques proved extremely effective even in the presence of strongly fibrous and altered samples.Covered by ultrabasic units for more than a third of its surface,the New Caledonia(South West Pacific) is one of the largest world producers of Ni-ore from lateritic deposits.Almost all outcrops of geological units and open mines contain serpentine and amphibole,also as asbestos varieties.In this geological context,in which weathering processes had a great contribution in the production and dispersion of mineral fibres into the environment,the development of a routinely analytical strategy,able to discriminate an asbestiform fibre from a non-harmful particle,is a pivotal requisite.However,the acquisition of all these parameters is necessary for determining the risk associated to fibres exposition.A multidisciplinary routinely approach,based on the use of complementary simply-to-use but reliable analytical methods is the only possible strategy.In addition,the instrumental apparatus must be easily transportable on the field,directly on the mining site.The employment of specialized tools such as Polarized Light Microscopy associated to Dispersion Staining method(PLM/DS) and portable Raman spectroscopy for identification of environmental asbestos,are proved extremely effective in the improvement of the performance and rapidity of data acquisition and interpretation.Both PLM/DS and handheld Raman devices confirmed to be discriminant in the detection and characterization of asbestos fibres for both serpentine and amphibole.Furthermore,these techniques proved extremely effective even in the presence of strongly fibrous and altered samples.

关 键 词：Asbestos Fibrous antigorite In situ monitoring Dispersion staining Portable Raman New Caledonia 

分 类 号：TD877[矿业工程—非金属矿开采] O657.37[矿业工程—矿山开采]