TVOC detection adds a health guarantee to life

2022-07-22
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We spend a lot of time indoors every day. If the indoor air quality is poor, it is easy to cause countless diseases, among which the lightest symptoms are headache, itchy eyes, dyspnea, skin allergy, fatigue or vomiting. Basically, everyone has a clear understanding of formaldehyde, benzene, ammonia, radon and other harmful gases in the indoor air, but few people know about TVOC, another primary pollutant in the indoor air

tvoc is the abbreviation of total volatile organic compounds. The composition of TVOC is extremely complex. In addition to aldehydes, benzene, toluene, xylene, trichloroethylene, chloroform, naphthalene, diisocyanate, etc. are common, mainly from various coatings, adhesives and various artificial materials. TVOC is one of the three organic pollutants in the air (polycyclic aromatic hydrocarbons, volatile organic compounds and aldehydes), which has a serious impact. Next, I will analyze the source and detection method of TVOC for you

[source of TVOC]

the main source of TVOC is outdoors, mainly from fuel combustion and transportation; while indoors, it mainly comes from combustion products such as coal and natural gas, smoke from smoking, heating and cooking, building and decorative materials, furniture, household appliances, furniture, detergent and human body emissions. There are nearly a thousand kinds. In the process of interior decoration, TVOC mainly comes from paint, coating and adhesive. It is reported that the indoor TVOC concentration is usually between 0.2mg/m3 and 2mg/m3, which can even be dozens of times higher in improper decoration construction. Various indoor aromatic hydrocarbons and alkanes mainly come from automobile exhaust (76% - 92%). TVOC content in general paint is 0.4-1.0mg/m3. Because TVOC is highly volatile, in general, it can volatilize 90% within 10 hours after the paint is applied, while TVOC in the solvent releases only 25% of the total amount during the air drying process of the paint

[TVOC compounds harm]

TVOC can smell, irritate, and some compounds are genotoxic. It is believed that TVOC can cause the imbalance of immune level, affect the function of central nervous system, and cause dizziness, headache, lethargy, weakness, chest tightness and other conscious symptoms; It may also affect the digestive system, such as loss of appetite, nausea, etc. in serious cases, it may damage the liver and hematopoietic system, and cause allergy, etc

the study linked the exposure of TVOC in common office buildings with the following SBS symptoms: eye discomfort: burning, drying, foreign body sensation. Throat discomfort: dry throat. Respiratory problems: shortness of breath; Asthma, headache, anemia, dizziness, fatigue, irritability

it is generally believed that the normal, non industrial indoor environment TVOC concentration level will not lead to human tumors and cancer. When TVOC concentration is 3.0-25mg/m3, irritation and discomfort will occur, and headache may occur when combined with other factors; When the concentration of TVOC is greater than 25mg/m3, there may be other neurotoxic effects except headache

[TVOC detection method]

because there are many origins of TVOC, involving all kinds of substances in all aspects, the prevention and treatment methods we need to pay attention to and adopt are:

1. When decorating the house, in addition to considering the quality of decoration materials, we should also consider the proportion between the amount of decoration materials used and the indoor area. Although some decorative materials have reached the standard through testing, but they are overused, total volatile organic compounds still occur

2. After decoration, use the chemical sophistication method, that is, let the house have leisure for a period of time before moving in, so that the total volatile organic compounds can be distributed at the right time

3. In normal days, control and use indoor temperature and humidity, or choose ventilation methods, and adhere to good daily eating habits, do not smoke, drink less, etc., to reduce the concentration of indoor total volatile organic compounds

4. Grasp whether the total volatile organic compounds (TVOC) in the indoor environment where you live are overspent, and often ask the indoor environment detection part to detect (TVOC)

conclusion: TVOC can smell, irritate, and some compounds are genotoxic. Therefore, TVOC detection is extremely important. I hope the above editor's introduction to TVOC detection will help you. For more relevant knowledge, please continue to pay attention to the information platform

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