Evaluación de las concentraciones de Black Carbon en la cuidad de Barranquilla Atlántico
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Cantillo Rúa, Adriana Esther | 2020
Black Carbon (BC) is an atmospheric pollutant categorized as one of the main contributors to
climate change, due to the ability of its particles to absorb solar radiation. The objective of this
study was to evaluate the concentrations of BC in the city of Barranquilla, Atlántico, analyzing
the influence of its possible sources, for this, a sample was carried out with an AE33
Aethalometer for 5 months (May-September 2019). The sources were identified by calculating
the Ångström Absorption Exponent (AAE), while BC transport was calculated with modeling
using the Hysplit trajectory model. The average BC concentration was 1.09 ±1.03 µg/m3
, with
the highest levels occurring during business days, with high peaks between 6:00 am and 9:00 am.
The results obtained for AAE confirmed that the combustion of fossil fuels predominats with a
contribution of 58%, for the burning of biomass 6% and for the influence of the two sources in
the same period 36%. The modeling revealed the burning points, which determined that the
greatest contribution to BC concentrations came from the East and Northeast of the city. BC
concentrations and meteorological parameters presented a positive relationship with temperature
and solar radiation, and a negative relationship with relative humidity and precipitation. The
results indicate that the emission of BC in the city is mainly associated with vehicular traffic,
where on certain days the rates are relatively high and can generate harmful effects on the
population's health.
LEER