Sources of Air Pollutants | Chapter 14 | Lecture 3 | FSc 1st Year Chemistry

Описание: Sources of Air Pollutants | Chapter 14 | Lecture 3 | FSc 1st Year Chemistry

In this lecture, we discuss Sources of Air Pollutants from Chapter 14 (Environmental Chemistry) of FSc 1st Year Chemistry, strictly according to the Punjab Textbook Board (PTB) syllabus.

This lecture explains the most important air pollutants mentioned in the textbook, including primary and secondary pollutants, along with their natural and human-made sources.

🔍 Topics Covered in This Lecture:

Definition of air pollutants

Difference between primary and secondary air pollutants

Oxides of Carbon (CO, CO₂)

Oxides of Nitrogen (NO, NO₂ – NOₓ)

Oxides of Sulphur (SO₂, SO₃ – SOₓ)

Hydrocarbons (Methane, Ethane)

Low altitude ozone (O₃)

Chlorofluorocarbons (CFCs)

Polycyclic Aromatic Hydrocarbons (PAHs)

Persistent Organic Pollutants (POPs)

Volatile Organic Compounds (VOCs)

Particulate Matter (PM)

Heavy metals (Pb, Hg, Cd)

🌿 Sources of Air Pollution Explained:

✅ Natural Sources

Volcanic eruptions (gases and particulate matter)
Thunderbolt producing oxides of nitrogen (NOₓ)
Swamps and peat bogs producing methane (CH₄)
Ocean algae releasing hydrogen sulphide (H₂S)
Wind erosion producing dust particles

✅ Human-Made Sources

Motor vehicles and transport
Factories and industries
Electric power plants
Brick kilns
Burning of coal, wood, and fossil fuels

🎯 Why This Lecture Is Important:

Based strictly on FSc 1st Year PTB textbook
Helpful for board exams, MCQs, short & long questions

Builds strong conceptual understanding
Useful for entry tests and competitive exams

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