Health Hazards of Sulfur Dioxide
Jan 23, 2021
Source: Cainiu Health
Dr. Guo Xiheng
Introduction
Health Hazards of Sulfur Dioxide to Humans:
1. Acute Poisoning: Mild poisoning may cause lacrimation, photophobia, coughing, and burning pain in the pharynx and larynx.
2. Chronic Effects: Prolonged exposure to low concentrations may lead to systemic symptoms such as headache, dizziness, and fatigue, as well as chronic rhinitis, tonsillitis, bronchitis, and diminished sense of smell and taste.
Sulfur dioxide (SO₂) is one of the most common atmospheric pollutants. With the rapid advancement of industrialization and urbanization, air pollution—particularly urban air pollution—has become increasingly severe, posing serious threats to human health. Given that sulfur dioxide poses significant hazards to human health, what exactly are these hazards? Below, we provide a detailed explanation.
Hazards of Sulfur Dioxide to Human Health
Airborne SO₂ concentrations exceeding 0.5 ppm already exert potential adverse effects on the body; at 1–3 ppm, most individuals begin experiencing irritation; exposure to concentrations of 400–500 ppm may cause ulceration and pulmonary edema, ultimately leading to asphyxiation and death.
Acute poisoning: Mild intoxication manifests as lacrimation, photophobia, coughing, and burning pain in the pharynx and larynx. Severe poisoning may induce pulmonary edema within several hours; inhalation of extremely high concentrations can trigger reflex laryngospasm, resulting in asphyxiation. Skin or ocular contact may cause inflammation or chemical burns.
Chronic effects: Prolonged exposure to low concentrations may lead to systemic symptoms—including headache, dizziness, and fatigue—as well as chronic rhinitis, tonsillitis, bronchitis, and diminished olfactory and gustatory function.
Knowledge Extension: Emergency Management of Sulfur Dioxide Poisoning
For patients with severe poisoning symptoms, treatment under medical supervision may include administration of 2–5% sodium bicarbonate solution or corticosteroids, which help stabilize the patient’s condition and alleviate toxic symptoms. If SO₂ has contacted the skin, thorough rinsing with copious amounts of clean water is essential.
Some patients may develop pulmonary edema; in such cases, high-dose, short-term corticosteroid therapy is recommended to maintain airway patency and improve impaired lung function. Should shock persist despite comprehensive supportive care, anti-shock therapy should be initiated promptly. After clinical improvement, dietary adjustments are advised—opting for light, easily digestible meals rich in vegetables and fruits.
The above outlines the health hazards associated with sulfur dioxide exposure. We hope this information proves helpful.
