The car environment is getting worse and worse, in addition to the car perfume, inferior glue, floor MATS, "leather" seats, and even the steering wheel cover, the culprit also comes from the adhesive volatile substances, so that the car formaldehyde, toluene, xylene, methanol and other chemical pollutants began to increase. Among them, formaldehyde is the most harmful to human health.

What is formaldehyde?

Formaldehyde is a colorless, strongly stimulating odor of gas, soluble in water, alcohol and ether. Formaldehyde is in the gaseous state at room temperature, usually in the form of an aqueous solution, and we are most familiar with the formaldehyde solution, is the concentration of 35 ~ 40% of formalin. Formalin has antiseptic function, and is generally used as preservative for cadaver and soaking liquid for specimen. In the case of the same dose, the toxicity ratio of methanol, formaldehyde and formic acid to human body is 1:30:6, that is, the toxicity of formic acid is 6 times that of methanol, and the toxicity of formaldehyde is 30 times that of methanol.

Why formaldehyde can let a person "talk tiger color"? Look at the four main hazards caused by formaldehyde on the human body, we know:

1. Stimulation: formaldehyde has a stimulating effect on the skin mucosa and can combine with protein. When inhaled in high concentration, severe irritation of the respiratory tract, edema, eye irritation, headache and other symptoms will occur.

2. Allergic effect: direct skin contact with formaldehyde can cause allergic dermatitis, stain, necrosis, inhalation of high concentration of formaldehyde can induce bronchial asthma;

3. Mutagenic effect: high concentration of formaldehyde is also a genotoxic substance, which can cause nasopharyngeal tumors if inhaled in high concentration;

4. Long-term inhalation of formaldehyde by pregnant women may lead to fetal deformity and even death; Men's long-term inhalation of formaldehyde can lead to sperm deformity, death and so on.

The harm of benzene

Benzene organic compounds, is the composition of the simplest aromatic hydrocarbon, at room temperature for a colorless, sweet transparent liquid, its density is less than water, with a strong aromatic smell. Flammable, toxic, IARC class I carcinogens.

When benzene enters the body, nicotinamide adenine phospholipase (NADPH) is oxidized to H202 in the presence of cytochrome P450 in the liver, which is hydroxylated to phenol, which is oxidized to hydroquinone or catecholamine, and HQ or CAT is hydroxylated to produce Bt. These metabolites of benzene are transported to the bone marrow, where HQ is oxidized to benzoquinone. A series of studies have suggested that HQ and benzoquinone among these metabolites of benzene are the ultimate toxicants that cause bone marrow poisoning and lead to leukemia.

The harm of TVOC

Volatile organic compounds (TVOC) refers to the boiling point between 50 and 250 compounds, according to their different chemical structure, can be further divided into eight categories; Alkanes, aromatics, alkenes, halohydrocarbons, aldehydes, ketones, and others. In non-industrial indoor environments, 50 to 300 kinds of volatile compounds can be seen. They all occur at trace and measured levels, with each compound rarely exceeding the 50 mg/m3 level. TVOC can cause dysregulation of the body's immune level and affect the function of the central nervous system, resulting in self-conscious symptoms such as dizziness, headache, drowsiness, weakness and chest tightness. It may also affect the digestive system, resulting in loss of appetite and nausea. In serious cases, it can damage the liver and hematopoietic system, resulting in neurotoxic effects.