Question: What Are 6 Criteria Pollutants?

What are examples of pollutants?

Known as criteria air pollutants, the six most common pollutants include ozone, carbon monoxide, sulfur dioxide, lead, nitrogen oxides, and particulate matter.

Greenhouse gases are another form of hazardous air pollution..

What are 4 major chemical pollutants?

There are 10 substances that cause the most concern: Carbon Monoxide, Sulfur Dioxide, Carbon Dioxide, Volatile Organic Compounds (VOCs), Particulates, Nitrogen Oxides, Ozone, Chlorofluorocarbons, Unburned Hydrocarbons and Lead and Heavy metals.

Which country has the cleanest air?

New ZealandIn terms of PM 2.5 pollution — a measure of ultra-fine particulate matter in the air — the country with the world’s cleanest air is New Zealand, while the US ranks seventh on that list.

What is the biggest pollutant?

World’s Top 10 Toxic Pollution ProblemsCoal Mining (Sulphur Dioxide and Mercury Pollution) … Artisanal Gold Mining (Mercury Pollution) … Lead Smelting. … Pesticides Pollution from Agriculture and Storage. … Arsenic in Ground Water. … Industrial Waste Water. … Chromium Pollution (Dye Industry) … Chromium Pollution (Tanneries)More items…

What are the 6 regulated pollutants by the Clean Air Act?

The Clean Air Act requires EPA to set National Ambient Air Quality Standards (NAAQS) The six pollutants are carbon monoxide, lead, ground-level ozone, nitrogen dioxide, particulate matter, and sulfur dioxide.

What is a good air quality number?

“Good” AQI is 0 to 50. Air quality is considered satisfactory, and air pollution poses little or no risk. “Moderate” AQI is 51 to 100. Air quality is acceptable; however, for some pollutants there may be a moderate health concern for a very small number of people.

What are the 10 types of pollution?

Below are explanations of the 10 types of pollution.Air Pollution – … Light Pollution – … Noise Pollution – … Plastic Pollution – … Thermal Pollution – … Visual Pollution – … Water Pollution – … Radioactive Contamination -More items…•

What are the seven criteria pollutants?

Under the Clean Air Act, EPA has established National Ambient Air Quality Standards (NAAQS) for carbon monoxide, lead, ground-level ozone, particulate matter, nitrogen dioxide, and sulfur dioxide.

What are the major pollutants?

The common air pollutants are:Particulate matter (PM10 and PM2. … Ozone (O3)Nitrogen dioxide (NO2)Carbon monoxide (CO)Sulphur dioxide (SO2)

What is the most dangerous pollutant?

Top of the POPs: The world’s most dangerous pollutantsDichlorodiphenyltrichloroethane (DDT)Polychlorinated biphenyls (PCBs)Hexochlorobenzene (HCB)Hexachlorocyclohexane.Hexabromocyclododecane (HBCD)

What are the 5 pollutants?

5 Major Outdoor Air PollutantsOzone (O3)Nitrogen Oxides (NOx)Carbon Monoxide (CO)Sulfur Dioxide (SO2)Particulate Matter (PM10 and PM2.5)

What is a good air quality?

The higher the AQI value, the greater the level of air pollution and the greater the health concern. For example, an AQI value of 50 or below represents good air quality, while an AQI value over 300 represents hazardous air quality. … AQI values at or below 100 are generally thought of as satisfactory.

What are the 2 types of pollutants?

The two types of air pollutants are primary pollutants, which enter the atmosphere directly, and secondary pollutants, which form from a chemical reaction.

Where is the purest air in the world?

Researchers have identified Earth’s cleanest air – free of particles caused by our human activity – in a region in the Southern Ocean off the coast of Antartica. Weather and climate are complex processes that connect each part of the world to every other region.

What are the symptoms of unhealthy air quality?

What symptoms are often linked to poor indoor air quality?Dryness and irritation of the eyes, nose, throat, and skin.Headache.Fatigue.Shortness of breath.Hypersensitivity and allergies.Sinus congestion.Coughing and sneezing.Dizziness.More items…