Atmospheric quality and distribution of heavy metals in Argentina employing Tillandsia capillaris as a biomonitor.

Pignata,ML, Gudiño,GL, Wannaz,ED, Plá,RR, González,CM, Carreras,HA and Orellana,L 2002, Atmospheric quality and distribution of heavy metals in Argentina employing Tillandsia capillaris as a biomonitor., Environmental pollution, vol. 120, no. 1, pp. 59-68, doi: 10.1016/S0269-7491(02)00128-8.

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Title Atmospheric quality and distribution of heavy metals in Argentina employing Tillandsia capillaris as a biomonitor.
Author(s) Pignata,ML
Orellana,LORCID iD for Orellana,L
Journal name Environmental pollution
Volume number 120
Issue number 1
Start page 59
End page 68
Total pages 10
Publisher Elsevier
Place of publication Amsterdam, The Netherlands
Publication date 2002-11
ISSN 0269-7491
Keyword(s) Biomonitoring
Chemical parameters
Elemental content
Tillandsia capillaris
Summary The atmospheric quality and distribution of heavy metals were evaluated throughout a wide region of Argentina. In addition, the biomonitor performance of Tillandsia capillaris Ruiz & Pav. f. capillaris was studied in relation to the accumulation of heavy metals and to its physiologic response to air pollutants. A sampling area of 50,000 km2 was selected in the central region of the Argentine Republic. This area was subdivided into grids of 25 x 25 km. Pools of T. capillaris, where present, were collected at each intersection point. From each pool three sub-samples were analyzed independently. Furthermore, five replicates were collected at 20% of the points in order to analyze the variability within the site. The content of Co, Cu, Fe, Ni, Mn, Pb and Zn was determined by Atomic Absorption Spectrometry. Chemical-physiological parameters were also determined to detect symptoms of foliar damage. Chlorophylls, phaeophytins, hydroperoxy conjugated dienes, malondialdehyde and sulfur were quantified in T. capillaris. Some of these parameters were used to calculate a foliar damage index. Data sets were evaluated by one-way ANOVA, correlation analysis, principal component analysis and mapping. Geographical distribution patterns were obtained for the different metals reflecting the contribution of natural and anthropogenic emission sources. According to our results it can be inferred that Fe, Mn and Co probably originated in the soil. For Pb, the highest values were found in the mountainous area, which can be attributed to the presence of Pb in the granitic rocks. Ni showed mainly an anthropogenic origin, with higher values found in places next to industrial centers. For Zn the highest values were in areas of agricultural development. The same was observed for Cu, whose presence could be related to the employment of pesticides. The foliar damage index distribution map showed that the central and southeastern zones were the ones where the major damage in the bioindicator was found. The central zone coincides with the city of Córdoba whereas the southeastern area is strictly agricultural, so the high values found there could be related to the use of pesticides.
Language eng
DOI 10.1016/S0269-7491(02)00128-8
Field of Research 119999 Medical and Health Sciences not elsewhere classified
Socio Economic Objective 929999 Health not elsewhere classified
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©2002, Elsevier
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