Indoor environmental air quality testing

NegotiableUpdate on 02/13

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Overview

Indoor air quality testing is the main place where we live and work. If we are exposed to polluted indoor air for a long time, the cumulative harm of pollutants is very serious. Therefore, we need to timely test the indoor air environment.

Product Details

　　 Indoor environmental air quality testingIt is a technical process of analyzing and testing indoor air pollutants caused by interior decoration and furniture purchase, and issuing a test report based on the test results.

　　Due to the wide range and variety of indoor air pollutants, various pollutants have different degrees of harm to the human body. In modern building design, the effective use of energy is increasingly considered, resulting in very little ventilation between indoor and outdoor environments. In this case, indoor and outdoor environments become two relatively different environments. Therefore, indoor air pollution has its own characteristics, mainly manifested in the following aspects:

　　Many indoor air pollutants can cause great harm to the human body in the short term, and some have a long incubation period. Usually, the time is between 3-15 years. For example, radioactive pollution has a latent period of several decades.

　　Indoor environment is the main place where people live and work. At least half of a person's life is spent indoors, and prolonged exposure to polluted indoor air environments exacerbates the cumulative harm of pollutants to the human body.

　　 Indoor environmental air quality testing,There are various types of indoor air pollutants, including physical pollution, chemical pollution, biological pollution, radioactive pollution, etc. The sources of pollutants that cause indoor and outdoor air pollution are roughly divided into the following categories: firstly, particulate matter such as dust, ash, and smoke, which generally come from smoking, cooking with firewood in rural areas, and secondary dust from construction sites. The second is chemical pollutants such as sulfur dioxide and nitrogen dioxide. These harmful chemical pollutants in the air mainly come from the smoke and dust released from coal combustion and the exhaust emissions from cars. These harmful gases will enter indoors through doors and windows. The third is microbial pollutants

　　Testing standard: GB/T18883-2022 "Indoor Air Quality Standards"

test project	detection method	limit
formaldehyde	GB/T 18204.2-2014 "Methods for hygiene inspection of public places" Part 2: Chemical pollutants	≤0.10
formaldehyde	7.2 Formaldehyde phenol reagent spectrophotometric method	≤0.10
benzene	GB/T 11737-1989 "Hygienic Inspection Standards for Benzene, Toluene, and Xylene in the Atmosphere of Residential Areas - Gas Chromatography Method"	≤0.11
toluene		≤0.20
xylene		≤0.20
ammonia	GB/T 18204.2-2014 "Methods for hygiene inspection of public places" Part 2: Chemical pollutants	≤0.20
ammonia	8.1 Indigo phenol blue spectrophotometric method	≤0.20
TVOC	GB/T 18883-2022 "Indoor Air Quality Standards" Appendix C: Test Method for Total Volatile Organic Compounds (TVOC) in Indoor Air	≤0.60
radon	GB/T 14582-1993 Standard Measurement Method for Radon in Environmental Air	≤400
Pre sampling instructions: Doors and windows must be sealed for 12 hours before sampling. Doors and windows should be closed during sampling, and the sampling time should be ≥ 45 minutes

GB/T 18883-2022 "Indoor Air Quality Standards"
Additional measurable indicators	specific indicators
物理性	Temperature, relative humidity, wind speed, fresh air volume
chemical property	Ozone, nitrogen dioxide, sulfur dioxide, carbon dioxide, carbon monoxide, trichloroethylene, tetrachloroethylene, benzo [a] pyrene, inhalable particulate matter (PM), fine particulate matter (PM2. s)
Biological nature	Total Bacterial Count