mixture blog- air pollution

-
Katelyn Miller
Mixture Blog
Pollution and Air
The air we breathe is a mix of pollutants that come from different sources or are created from different chemical reactions in the atmosphere. The type of air pollutants in the air can vary by the proximity to sources of pollutants such as traffic or industry and the time of year, such as summer when ozone is more common. Health services are actively considering approaches to manage air quality and to take into account multiple pollutants in the atmosphere rather than single pollutants. To support this effort, research is being conducted to advance understanding of the exposures and health effects of air pollution mixtures.

Most air pollution health research focuses on a single pollutant or treats other pollutants as confounders, but we really breathe a complex mixture. Scientists explore methods to investigate multi-pollutant systems. They try to estimate health response to exposure of multiple pollutants. Although airborne particulate matter constitutes a complex mixture, particles are regulated and largely studied according to total mass, without regard to chemical structure.

New approaches are needed to provide insights into the complex interactions and human health effects of multipollutant exposures. Research on the course of action of multipollutant mixtures in systems is showing how air pollutants can be grouped together based on their common course of action. New studies are being developed to better understand how combinations of air pollutants influence human health effects. New approaches are also being developed to screen complex mixtures containing multiple pollutants to determine which ones are the most toxic or need to be studied more. The data and findings from these studies are being used to refine models that can be used to estimate effects of complex multipollutant mixtures.

Comments

Post a Comment

Popular posts from this blog

Mahar-ullah Shahminah- Molecular Gastronomy

-
Image
Molecular Gastronomy   By: Shahminah Mahar-ullah Date:3/22/19 Molecular Gastronomy is both a fusion of science and cooking. The scientific discipline gives the chef complete control of what the texture, taste, and physical appearance of the dish. Molecular Gastronomy is a modern unique style of cooking that some would say it could be considered art. There are three aspects of Molecular Gastronomy, as i said before it is texture,taste,and physical appearance. Molecular Gastronomy can have a very simple and familiar taste or a new and unique taste. Taste is often a aspect that is forgotten about in Molecular Gastronomy. Mostly because people who don't know much about the style of cooking kinda forget that its actually cooking ,not just some form a science. Taste is the main focus with cooking in general and with molecular cooking taste can be brought to a whole new level since you have complete control over each part of the dish. Same goes for physical appearance and ...
Read more

Chemically termolecular reactions: The fourth class of chemical reactions

-
Image
Chemically termolecular reactions: The fourth class of chemical reactions Maisy Chase Up until now only three classes of chemical reactions were known. Unimolecular reactions occur when one reactant undergoes bond breaking or forming to create different products. Bimolecular reactions are where two reactants collide and then undergo bond breaking or forming. Termolecular association reactions, where two reactants collide to form a whole with a new chemical bond between the two reactants. A third molecule, known as the bath gas, then removes some of the internal kinetic energy of that molecule to stabilize it. Researchers from Columbia University , led by Assistant Professor of Mechanical Engineering Michael P. Burke, have discovered a fourth class of chemical reaction known as “chemically termolecular reactions.” This involves the breaking and bonding of three molecules. The team showed that these chemically termolecular reactions not only are major chemical pathways but also ...
Read more

Force and Motion

-
Image
Zach Fluck Science blog Force and Motion Blog Sir Isaac Newton was an English astronomer, physicist, and mathematician, born on December 25, 1642. He died on March 20, 1727, most likely from mercury poisoning or old age. However, during his life, he made several contributions to modern science and advanced our understanding of physics tremendously. Arguably his most famous discovery was gravity. However, he had to use his 3 laws of motion to make this accomplishment. Newton understood that an object at rest will stay at rest, unless acted on by unbalanced forces. Therefore, if an object such as an apple is in a resting position there must be a force to make the apple fall to the ground. He discovered this invisible force to be gravity. At a young age Newton was removed from school to be a farmhand. Despite returning to school the turning point in his live was he left his hometown to attend Cambridge University. After attending Cambridge he returned to his hometown where his observat...
Read more