I work in the office inside the furniture factory, and I have used formaldehyde monitoring instrumen

Updated on furniture 2024-02-15
1 answers
  1. Anonymous users2024-01-23

    The main harm of formaldehyde is the irritation of the skin and mucous membranes, and when formaldehyde reaches a certain concentration indoors, people will feel uncomfortable. Formaldehyde concentrations greater than those can cause eye redness, itchy eyes, throat discomfort or pain, hoarseness, sneezing, chest tightness, wheezing, dermatitis, etc. Newly renovated rooms have high levels of formaldehyde, which is a major cause of many diseases.

    Acute toxicity: LD50: 800mg kg (rat oral), 2700mg kg (rabbit transdermal); LC50: 590 mg m3 (rat inhalation); [1]

    Human inhalation of 60 120mg m3 causes bronchitis and severe lung damage; [1]

    Human inhalation of 12 24mg m3, severe burns, tearing, cough of nasal and pharyngeal mucosa; Human oral-10 20mL, lethal. [1]

    High formaldehyde concentration can cause acute poisoning, manifested as burning pain in the throat, dyspnea, pulmonary edema, Henoch-Schonlein purpura, allergic dermatitis, elevated liver aminotransferases, jaundice, etc.

    Subacute and chronic toxicity:

    Rats inhaled 50-70 mg m3, 1 hour a day, 3 days a week, and 35 weeks, and found tracheal and bronchibasal cell hyperplasia and biochemical changes; [1]

    People who inhale 20-70mg m3 for a long time have loss of appetite, weight loss, weakness, headache, insomnia; [1]

    Long-term exposure to 12mg m3 inhaled by human beings causes drowsiness, weakness, headache, finger tremors, and vision loss. [1]

    Formaldehyde has a pungent odor, which can be smelled at low concentrations, and the olfactory threshold of formaldehyde is usual. However, there are large individual differences, and some people can reach them. Long-term, low-concentration exposure to formaldehyde can cause headache, dizziness, fatigue, sensory impairment, decreased immunity, and drowsiness, memory loss or neurasthenia, and mental depression; Long-term exposure to formaldehyde can cause respiratory dysfunction and hepatic toxic lesions, manifested as hepatocyte damage and abnormal liver radiation energy.

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