Friday, June 26, 2020

Up knowledge! It turns out that black tea can also go to formaldehyde?

When I first moved into a new house, I always worried about the harm of formaldehyde to the body. I bought a formaldehyde purifier and always worried about the purification. In fact, you can buy some black tea to try. You can not only drink but also go to formaldehyde.

Formaldehyde hazards

1. Sensitization: Direct skin contact with formaldehyde can cause allergic dermatitis, stains, and necrosis. Inhalation of high concentrations of formaldehyde can induce bronchial asthma.

2. Irritation: The main hazard of formaldehyde is the stimulation of the skin and mucous membranes. Formaldehyde is a toxic substance of protoplasm, which can combine with protein and cause serious respiratory irritation and edema, eye irritation and headache when inhaled at high concentration.

3. Mutagenic effect: High concentration of formaldehyde is also a genotoxic substance. Experimental animals can cause nasopharyngeal tumors when inhaled in high concentrations in the laboratory.

The effect of black tea to remove formaldehyde

Because formaldehyde exists in three states: free state, adsorbed state, and combined state; only part of the free state can be eliminated by ventilation treatment, and it can be eliminated at more than 4 times the normal wind speed. The tea leaves of black tea have a strong odor absorption ability, and the formaldehyde can be removed by the odor absorption of the tea leaves.

How to remove formaldehyde from black tea

High temperature, high humidity, and negative pressure will accelerate the distribution of formaldehyde. 300 grams of black tea is soaked in the hot water in the two washbasins, placed in the living room, and opened the window to ventilate. Within 48 hours, the indoor formaldehyde content will drop by more than 90%, and the irritating smell will be basically eliminated.

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