Скачать или смотреть Polycyclic hydrocarbons or Polycyclic aromatic hydrocarbons PAHs Poisoning or Pollution

Polycyclic Aromatic Hydrocarbons (PAHs) are a group of organic compounds made up of multiple fused aromatic rings. They are formed primarily through incomplete combustion of organic materials like coal, oil, gas, wood, and tobacco. PAHs are widespread environmental pollutants and pose serious risks to both human health and ecosystems.

🔥 Sources of PAHs
Source Type Examples
Natural Forest fires, volcanic activity
Anthropogenic Vehicle exhaust, industrial emissions, cigarette smoke, grilled or smoked foods
Occupational Aluminum production, coal tar processing, asphalt work
These compounds are found in air, soil, water, and sediments, and they tend to persist due to their chemical stability and hydrophobic nature2.

☠️ Toxicity & Health Effects
PAHs are known to be carcinogenic, mutagenic, and teratogenic. Human exposure occurs through inhalation, ingestion, or skin contact, especially in polluted urban environments or occupational settings.

🧠 Health Risks
Cancer: Lung, breast, skin, and bladder cancers linked to PAH exposure

Respiratory issues: Asthma, reduced lung function, chronic bronchitis

Cardiovascular disease: Inflammation and oxidative stress

Developmental effects: Cognitive and behavioral issues in children

Reproductive toxicity: Fertility impairment and birth defects

🌍 Environmental Impact
PAHs are persistent organic pollutants (POPs) that:

Bioaccumulate in aquatic and terrestrial food chains

Pollute soil and water, especially near industrial zones

Travel long distances through atmospheric transport

Resist degradation, making cleanup difficult

🧪 Remediation Strategies
Efforts to reduce PAH pollution include:

Bioremediation: Using bacteria, fungi, or plants to break down PAHs

Physical methods: Soil washing, membrane filtration, thermal treatment

Policy interventions: Emission controls, cleaner fuels, and public awareness campaigns

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