Mexico.: Dust murderer of Valley Toluca

Posted on March 30, 2012

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The PM 2.5 are generally produced by incomplete combustion processes and photochemical reactions in the atmosphere, these are their main source, rich in organic contaminants and metals that reach alveoli.
Joshua Huerta
March 29, 2012
9:35
eluniversal
They call it the dust murderer. PM 2.5 particles are 20 times smaller than the diameter of a human hair, are composed of organic compounds and metals that contribute to cancer development and the inhabitants of the Valley of Toluca breathed high concentrations of this pollutant for 39 days in 2011.

Although this is not the worst since the January 1, 2012 floated in the Toluca Valley 514 micrograms per cubic meter of PM 2.5 particles figure ever recorded by the Directorate General for Prevention and Control of Atmospheric Pollution of the Ministry of Environment State of Mexico.

To size the problem is that the Norma Oficial Mexicana (NOM) provides that a maximum should be in the air of any city 65 micrograms per cubic meter of PM 2.5, and compare Mexico City in 2011 did not exceed this parameter.

Doctor in Chemical Sciences and members of the Centre for Atmospheric Sciences, UNAM, Omar Amador Muñoz, has studied the presence of these particles in the air and the effects on human health.

PM 2.5 particulate pollution have earned the nickname of “dust murderer” in the scientific community, are 20 times smaller than the diameter of a human hair, cause lung cancer and the Valley of Toluca had 20 days

“The PM 2.5 are generally produced by incomplete combustion processes and photochemical reactions in the atmosphere, these are their main source, rich in organic contaminants and metals that reach alveoli.

“They are associated with morbidity and mortality of the population. Morbidity and mortality as a function of particle diameter between smaller finest and most dangerous chemical composition of these two variables depends on the damage to health,” says Amador Muñoz.

The head of the Department of Atmospheric Monitoring the Metropolitan Area of Toluca, Alejandra López Tinoco, revealed that 39 days of 2011 exceeded 65 micrograms per cubic meter which provides a maximum of NOM.

January of that year had eight days of maximum levels, the most was the January 1 242. While February was four days exceeded the NOM which was recorded on day 21 with 76 maximum.

December 2011 was the second month of last year with the greatest amount of PM 2.5 in the air because it had a total of 19 days exceeded 65 micrograms per cubic meter pro of this pollutant, the largest of these was the 25th with 465 micrograms per cubic meter.

From June to October 2011 was not exceeded the maximum allowable level of these particles in the Toluca Valley in accordance with the Department of Atmospheric Monitoring in the region.

Although Mexico City PM 2.5 are tracked and studied for about six years, Alejandra López Tinoco noted that in the case of State of Mexico they began to look for from just 2011.

Hence not have a history to determine whether the January 1, 2012, when he had 514 micrograms per cubic meter of this contaminate in the Valley of Toluca was the highest in the history of the region.

Omar Amador Muñoz Center for Atmospheric Sciences, UNAM states that Toluca has special characteristics that make it prone to accumulate more particles PM 2.5, first is the cold weather, industry, and “most likely” an old vehicle fleet.

So said the State Government of Mexico must implement measures in the above three points, especially in the latter.

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