define quantitative qualitative and qualitative pollutants
Answers
Pollution is defined as the existence of impurities or pollutant substances in sufficient concentration levels, causing harmful effects on human beings, animals, plant life or material resources when exposed for a sufficient duration of time, thus reducing the quality of life in the environment.
From an ecological perspective, pollutants can be classified as degradable, slowly degradable and non-degradable. The Degradable or called as non-persistent pollutants can be rapidly broken down by natural process. For example domestic sewage, discarded vegetables, Slowly-degradable or persistent pollutants are pollutants that exist in the environment for many years in a stable condition and take decades or longer to degrade.
Pollutants: The substances which are present in harmful concentration and is the agent who causes pollution is termed as the pollutant.
Classification of Pollutants:
On the basis of existence in nature
a) Quantitative Pollutants- The substances which are already present in the environment, but are termed as pollutants when their concentration (quantity) increases in the environment. eg. CO2 is present in the environment in greater quantity than normal and is hence termed as a quantitative pollutant.
b) Qualitative Pollutant- The substances which are not normally present in the environment and are added by human beings and are pollutants by nature. Eg. insecticides, pesticides
On the basis of the form in which they persist
a) Primary Pollutants- The substances which are directly emitted from the source and remain in that form are termed as primary pollutants eg, smoke, fumes, ash, dust, nitric oxide and sulphur dioxide
b) Secondary pollutants- The substances which are formed by chemical reaction between the primary pollutants and constituents of the environment (i.e. those which are already present in the environment) .eg smog, ozone, sulphur trioxide, nitrogen dioxide.
On the Basis of Disposal
a) Bio-Degradable Pollutants- the pollutants which are decomposed by natural processes eg domestic (municipal) sewage.
b) Non Bio-degradable Pollutants- The pollutants which don’t decompose naturally or decompose slowly eg. DDT, Aluminium cans.
Answer:
Quantitative pollutant: The atmosphere is polluted by an excess of CO2, nitrogen oxide, etc.
Qualitative pollutant: The composition of the atmosphere is polluted by the use of pesticides and artificial fertilizers.
Explanation:
Pollutant:
- A pollutant is any material that is present in the environment in a dangerous concentration and that adversely impacts the environment by impairing a species' rate of growth and interfering with food chains.
- Pollutants also influence people's health, comfort, and property, among other things.
Types of pollutant:
- Quantitative Pollutants
- Qualitative Pollutants
Quantitative pollutants:
- Quantitative pollutants are substances that are naturally present in the environment but turn into pollutants when their concentration in the environment exceeds a certain value due to human activity.
- A good example of this is carbon dioxide, which exists naturally in the atmosphere but whose concentration is being raised by human activities like automotive emissions, which in turn are causing pollution and other negative environmental effects.
- The atmosphere is polluted by an excess of CO2, nitrogen oxide, etc. Because there is a lack of oxygen, this result in an unhealthy atmosphere.
Qualitative Pollutants
- Qualitative Pollutants includes the chemicals that people have produced that are not naturally present in the environment yet still pollute it.
- Example are Pesticides, insecticides, and similar chemicals are created by humans to eradicate insects and other pests, but because they are non-biodegradable by nature, they pollute the environment.
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