What are volatile organic compounds (VOCs)?

Volatile organic compounds (VOCs) are defined as organic chemicals that have the ability to evaporate under normal atmospheric conditions, leading to their presence in air and potential contamination of water supplies. Their volatility allows these compounds to transition from a liquid or solid state into a gaseous state, which can occur at room temperature.

In aquatic environments, VOCs can dissolve in water or attach to particles, making them significant pollutants, especially in areas near industrial activities or where improper disposal of chemicals occurs. This contamination can impact water quality and pose health risks to humans and wildlife. Thus, understanding VOCs and their implications is crucial for water quality monitoring and remediation efforts.

The other options presented do not accurately define VOCs. Solid particles found in water are classified differently, and inorganic compounds that improve water quality and heavy metals in water do not relate to the volatile and organic nature that characterizes VOCs.