Twinning of bio-indicators and a monitoring network of air quality for the detection of SO2 pollution in the area of Annaba (Algeria).

Abstract

The city of Annaba is regarded as one of the most polluted cities in Algeria. On one hand, there is the existence of an iron and steel complex, ISPAT, and a very important fleet in relation to distance travelled, on the other hand, this region shares certain topographical features and creates a climate conducive to the development of pollution. In this context, we focused our work on the study of SO2 pollution by using the results recorded by physico-chemical sensors at the level of network monitoring and control of air quality stations in the region of Annaba, baptized "Sama Safia" and the results of bio-indicators Xanthoria parietina and Funaria hygrometrica. A relevant strategy of sampling, a follow-up space-time and the measurement of certain physiological parameters (chlorophyl, proline, breathing) combined with the proportioning of SO2 were done. The twinning of the two results (physico-chemical sensors and bio-accumulators) showed correlations ranging from significant to highly significant not only between the parameters measured and determination of SO2 but also between bio-indicators and physico-chemical sensors, also the sensitivity and battery power of these two bio-indicators have allowed a better characterization of air pollution in this area.