Air quality has been a major health issue in urban areas
in recent decades. Human activities release a large number of
pollutants into the atmosphere which has a
direct impact on plant health and leads to
ecosystem degradation. The objective of this study is to contribute to a better
evaluation of the impact of the air quality of the city of Togo on biological
resources. The determination of pollutants was done on samples of plant species
with a strong link with the source of pollution. The determination of Sulfur dioxide
(SO2) was done by the ripper method. The determination of carbon and
estimation of CO2 and CO by the colorimetric method. The
determination of nitrogen was done by the
Kjeldhal method. The results showed that at the industrial level the amount of CO2 in Alternanthera repens is high with a value of 53.3911 mg/ml.
On the other hand, the quantity of CO in Senna occidentalis is 44.3619 mg/ml. In Pithecellobium dulce
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