The formaldehyde in the hotel exceeded the standard for one night.

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Relatively concentrated risk

When the formaldehyde concentration reaches 0.06-0.07mg/m3 per cubic meter of air, children will have mild asthma;

When formaldehyde in indoor air reaches 0. 1mg/m3, it will have peculiar smell and make people uncomfortable.

When formaldehyde reaches 0.5mg/m3, it can irritate eyes and cause tears;

Formaldehyde reaches 0.6mg/m3, which may cause throat discomfort or pain. When the concentration is high, it can cause nausea and vomiting, cough and chest tightness, asthma and even pulmonary edema;

When formaldehyde reaches 30mg/m3, it will kill people immediately.

1. Mild poisoning: obvious eye and upper respiratory tract mucosal irritation symptoms. The main manifestations are conjunctival congestion, redness, dyspnea, heavy breathing, hoarse throat, dry or dull speech or wet greasy. Poisoned people can still feel their breathing getting thicker. Another specific symptom of mild formaldehyde poisoning is one to two degrees of throat edema.

2. Moderate poisoning: persistent cough, expectoration, chest tightness, dyspnea and dry and wet gongs. During chest X-ray, the lung texture becomes substantial, becoming scattered spots or flaky shadows, which is medical machine-made bronchopneumonia. The edema of throat is aggravated to grade three. Blood gas analysis will be accompanied by mild and moderate hypoxemia.

3. Severe poisoning: the lung and larynx deteriorated, with pulmonary edema and fourth degree laryngeal edema, and the blood gas analysis was also serious, which was severe hypoxemia.