Colombia-Contaminated bike paths

[Tonka]

http://www.elespectador.com/noticias/bogota/articulo-308921-ciclorrutas-contaminadas
Spanish to English translation

National University Study
Contaminated bike paths
By: Writing Life
Particulate matter in the corridors for bicycles in Bogota is 100 micrograms per cubic meter. The recommendation of health authorities is 50 micrograms

Leave the car at home and replace it with a bike ride with the noble desire to improve health, it may not be such a good idea as many Bogot? think. A study by the National University suggests that the levels of pollution around the city bike paths are so high that they are harmful.
The student of Chemical Engineering and Professor Oscar Fajardo Nestor Rojas, who led the research published in the journal Atmospheric Environnement, drew Unimedios news agency that the concentrations of particulate matter in one of these corridors, where the bicycle frequently used are around 100 micrograms per cubic meter. The recommendation made by the World Health Organization is that it is up to 50 micrograms per cubic meter.
During the study, researchers examined the composition of the air we breathe in people during a bicycle tour through one of the bicycle routes in the city (Calle 80), which runs parallel to a line of Transmilenio and compared with the figure of less contaminated environments .
"We showed that most users of bike paths show an increase in their dose of particulate matter. In a clean environment these can be 3% to 4%, but some of the time spent in these pathways and the level of effort at the pedal, zoom reach up to 60%, "the researchers said.
The smoke particles from the vehicle, local industry and the dust of the streets, being so thin, can penetrate to the alveoli of the lungs and increase the risk of cardio-respiratory diseases like asthma, chronic obstructive pulmonary disease, emphysema, and others.
According to Fajardo and Rojas, users should use bike paths in Bogota industrial type masks to protect against particulate matter floating in the polluted air of the capital. Another suggestion of the researchers, is to make cycling routes that pass through parks or secondary roads away from buses, trucks and high traffic avenues.
Writing

 

[Tonka]

Re: Colombia-Contaminated bike paths

http://www.periodicoelsatelite.com/2011/11/recomindan-usar-tapabocas-en-ciclorrutas-ciclovias/
Spanish to English translation

Recommend using masks on bike paths
November 2, 2011 |

The longer the path the user may be greater your risk of illness (Photo A)
A research study presented by the National University of Colombia, said that concentrations of particulate matter in one of these corridors, where the bicycle is often used, are around 100 micrograms per cubic meter.



Chemical Engineering student and teacher Oscar Fajardo Nestor Rojas de la Universidad Nacional (UN),

The study, published in Atmospheric Environnement, said that most users of bike paths show an increase in their dose of particulate matter.

The study was carried out on the street cycle route 80, which account for much of his journey with the accompaniment of the TransMilenio bus system

In a clean, particulate matter may be 3% to 4%, but some of the time spent in these pathways and the level of effort at the pedal, you can upload up to 60%. "

The recommendation made by the World Health Organization is that it is up to 50%.

"We looked at how much air breathed these people when they are doing physical exertion on the cycle route and this figure compared with a dose less contaminated environments," said Rojas.

As the person struggles, the rate of breathing air is higher and tends to breathe through the mouth and does not filter particles from the nose and is exposed to a high dose increases the longer the distance traveled .

The particles (solid and liquid) from different sources such as soot from the smoke of vehicles and street dust. "They are too thin and can get very deep into the respiratory system. The smaller, more efficient penetration can reach the pulmonary alveoli interact with, says Rojas.

According to research, users should use bike paths industrial-type masks .

High concentrations of particles are associated, according to several epidemiological studies, increased cardio and vascular disease and increases in mortality.