The Environmental Protection Department of the Hong Kong government defines the respirable suspended particulate matter (RSPM) as particulate matter, suspended in the air, with the size of 10 microns or less. According to a MIT study, cited by the India Today, RSPM is regarded as a danger to health.Continue Reading
According to Christopher Loans, a chemical engineer at Environmental XPRT, SPM refers to suspended particulate matter having the aerodynamic size of up to 100 microns, while India Daily notes that RSPM, also called PM10, refers to particles having a size between 0.5 to 10 microns.
According to India Daily, premature death and asthma are just a couple of health issues, caused by PM10 air pollutants.Learn more about Industries
Factors that affect soil permeability include grain size, void ratio, water impurities and the volume of air or organic matter entrapped with the soil. Permeability is approximately proportional to the square of the grain size. Soil quality and permeability may vary greatly from one layer of soil to another.Full Answer >
A High Efficiency Particulate Air (HEPA) filter is a specialized filter capable of trapping 99.97 percent of all airborne contaminants greater than 0.3 microns in size. The purifier's fan draws air through the HEPA filter, removing dust, pollen, mold spores and other allergens from the air.Full Answer >
Individuals can protect themselves and their families from lead in the home by removing lead-based paint; installing a special high-efficiency particulate air, or HEPA, lead filter; and covering lead surfaces with drywall. They can also paint over lead-based pant with encapsulant paint, says the New York State Department of Health.Full Answer >
A HEPA, or high-efficiency particulate air-filter, can reduce symptoms of dust mite allergies because the filter works by forcing air through a fine mesh material, subsequently trapping allergens such as pet dander, pollen and dust mites. HEPA filters are found in vacuum cleaners and air purifiers.Full Answer >