Volatile organic compounds (VOCs) are an important factor affecting ambient air quality, and furniture production is one of the important sources of VOC pollution. High VOC concentrations have adverse effects on the environment and worker welfare in furniture factories. In order to control VOC emissions in a furniture workshop, the VOC species and concentration distributions were examined. Qualitative analysis of VOC species was carried out by headspace gas chromatography/mass spectrometry. The results showed that VOCs from a furniture workshop were mainly 12 substances including acetate, toluene, and xylene compounds. The heights and representative positions of VOCs released during the coating process were determined, and the results showed that VOC concentrations depended on environmental and height factors. The concentration of VOCs decreased with increasing altitude and reached a maximum concentration at 0.4 m above the ground. Because the concentration of VOCs varied with temperature, humidity, air pressure, and amount of spray paint, this paper established functional relationships between VOC concentrations and temperature, humidity, air pressure, and amount of spray paint. These results provide a theoretical basis for furniture workshops to automatically monitor and control VOCs.VOCs from the furniture workshop were mainly composed of 10 substances including acetate, toluene, and xylene compounds.

Bogotá es el centro industrial más importante de Colombia, presentándose todo tipo de actividades económicas que influyen en la emisión de contaminantes atmosféricos. Adicionalmente, la dinámica de crecimiento demográfico que enfrenta la ciudad de Bogotá, representa una serie de amenazas para el medio ambiente y para la población, con el incremento de las actividades industriales, hay mayores tasas de movilidad y el aumento del consumo de combustible se ha generado una preocupación por parte de las autoridades ambientales y de salud pública de la ciudad.Uno de los métodos para evaluar la calidad del aire es el uso de organismos bioindicadores como los líquenes, que son sensibles a la contaminación atmosférica y resultan económicos de muestrear.Por tal motivo con este estudio se propuso hacer una comparación histórica de calidad de aire de la zona de Las Ferias por medio de los líquenes como biondicadores del año 2015 a 2017. Se monitoreo la zona cercana a la estación que mide la calidad de aire de Las Ferias en un rango de 500 metros midiendo la presencia de líquenes, calculando su riqueza y cobertura liquénica; calculando el índice de pureza atmosférica IPA con ayuda de una cuadricula de 50x20cm (largo x ancho), y tomando los valores de concentraciones de contaminantes medidos obtenidos por la Red de Monitoreo de Calidad de Aire de Bogotá para comparar su comportamiento durante el tiempo. Se concluyó que la calidad de aire puede variar a través del tiempo debido al crecimiento del parque automotor de la zona y los líquenes son buenos indicadores lo que se evidencio que al aumentar las concentraciones de contaminantes la cobertura liquenica disminuye debido a que las morfoespecies que se encontraron en este zona son de mayor de mayor de sensibilidad a los contaminantes que otras | Bogotá is the most important industrial center of Colombia, presenting all kinds of economic activities that influence the emission of atmospheric pollutants. Additionally, the dynamics of population growth facing the city represents a series of threats to the environment and the population according to the increasing of industrial activities. We can see that there are higher mobility rates and there is an increase in fuel consumption that has generated a concern on the part of the environmental and public health authorities in the city . One of the methods for evaluating air quality is the use of bioindicators such as lichens, which are sensitive to atmospheric pollution; these are economics for carrying out corresponding studies . For this reason, with this study, it was proposed to make a historical comparison of air quality of the Las Ferias area by means of lichens as bioindicators from the year 2015 to 2017. Is monitoring the area around the station that measures the quality of air of the fairs at a range of 500 meters by measuring the presence of lichens, calculating its richness and makes coverage; calculating the rate of purity atmospheric IPA with the help of a grid of 50x20cm (length by width), and taking the values of concentrations of contaminants measured obtained by Bogota's air quality monitoring network to compare their behavior during the time. Concluded that air quality may vary over time due to the growth of the automotive Park area and lichens are good indicators of what is evidence to increase the concentrations of pollutants makes coverage decreases since the morphospecies that are found in this area are of greater of greater sensitivity to pollutants than others