Toxicity can be classified into several types based on the exposure duration and the nature of the effects:
1. Acute Toxicity: Occurs shortly after a single, high-level exposure. Symptoms are often immediate and severe. 2. Chronic Toxicity: Results from prolonged exposure to lower levels of a chemical, leading to long-term adverse effects. 3. Subacute Toxicity: Involves repeated exposures over a shorter period (weeks to months), with effects that may be reversible or irreversible. 4. Subchronic Toxicity: Exposure over a period of 1-3 months, which can cause lasting damage.
