Biomonitoring spatial and temporal impact of atmospheric dust from a cement industry.
The objective of this work was to evaluate the spatial and temporal impact of dust-pollution in the vicinity of a cement industry, located in an area with dry climate. The spatial impact integrated over time was evaluated from the concentrations of Ca, Fe and Mg in in-situ Xanthoria parietina. The temporal pattern was assessed through one-month transplants of the lichen Ramalina canariensis. Four potential sources of atmospheric dust were evaluated: the limestone-quarry; the unpaved roads, the deposit area and the cement mill. Calcium concentration in lichens was considered the best cement-dust indicator. Different types of dust (clinker and grinded-limestone-dust) resulted in different time-patterns of Ca accumulation, which was also related with the different influence that wet and dry periods have in the lichen accumulation process. The dust pollution was found to be deposited locally and dependent on: the nature of dust particles and the volume and frequency of precipitation.
Universidade de Lisboa, Faculdade de Ciências, Centro de Ecologia e Biologia Vegetal, Campo Grande, Edifício C2, Piso 4, Lisboa, Portugal. cmbranquinho@fc.ul.pt
Cristina
C
Branquinho
Gisela
G
Gaio-Oliveira
Sofia
S
Augusto
Pedro
P
Pinho
Cristina
C
Máguas
Otília
O
Correia
D000395:Air Pollutants, Occupational / Q000032:analysis*; D002118:Calcium / Q000032:analysis*; D002119:Calcium Carbonate; D003252:Construction Materials; D004391:Dust; D004784:Environmental Monitoring / Q000379:methods*; D019652:Extraction and Processing Industry; D019570:Inhalation Exposure; D007501:Iron / Q000032:analysis; D008011:Lichens / Q000737:chemistry; D008274:Magnesium / Q000032:analysis; D016273:Occupational Exposure; D010316:Particle Size; D011174:Portugal; D011891:Rain; D013995:Time
D000395:Air Pollutants, Occupational; D004391:Dust; D007501:Iron; D002119:Calcium Carbonate; D008274:Magnesium; D002118:Calcium