CIQSO-Associate Unit University of Huelva Atmospheric Pollution, University of Huelva, Campus El Carmen, E-21071 Huelva, Spain.
Environ Sci Technol. 2013 Apr 16;47(8):3630-8. doi: 10.1021/es3051235. Epub 2013 Mar 26.
This study presents the results of the physicochemical characterization of particulate matter associated with an important dust event from the Sahara area that occurred in the South of Spain in 2010. The chemical composition of the samples reflected the dominance of the crustal component of sand from the Sahara desert, although the presence of Mo, Ti, and V trace elements indicated that the dust contained industrial material; probably collected in its transport from Africa. Microbial biodiversity associated with the dust was low, but dominated by Firmicutes and Proteobacteria. Some Firmicutes (belonging to the genus Bacillus and Sporosarcina) were cultured on solid and liquid medium, which suggested that the transported microbes were alive or present as spores that germinated under favorable conditions. These cultivable microbes in the form of spores were highly resistant to desiccation, heat, and UV light.
本研究介绍了与 2010 年发生在西班牙南部的撒哈拉地区重要尘暴事件相关的颗粒物的物理化学特征的研究结果。样品的化学成分反映了撒哈拉沙漠沙的壳质成分的主导地位，尽管 Mo、Ti 和 V 痕量元素的存在表明尘埃含有工业物质；可能是在从非洲运输过程中收集的。与尘埃相关的微生物多样性较低，但以厚壁菌门和变形菌门为主。一些厚壁菌门（属于芽孢杆菌属和芽孢八叠球菌属）在固体和液体培养基上培养，这表明运输的微生物是活的，或者以孢子的形式存在，在有利条件下孢子会发芽。这些以孢子形式存在的可培养微生物对干燥、高温和紫外线具有很强的抵抗力。
