The main source of TVOC outdoors, mainly from fuel combustion and transport: In the interior is mainly from coal and natural gas combustion products, smoke, fumes and other heating and cooking, construction and decoration materials, furniture, household appliances, detergents and the body's own emissions. There are nearly a thousand species. In the interior decoration process, VOC paints primarily from indoor air pollution, coatings and adhesives. According to reports, indoor TVOC concentrations typically between 0.2mg / m3 to 2mg / m3, while the decoration in improper construction, or even tens of times higher. Indoor various aromatics and alkanes mainly from vehicle exhaust (76% -92%). General Paint towel TVOC content 0.4-1.0mg / m3. After Lily et al point out, as a result of strong volatility TVOC, under normal circumstances, within 10 hours after painting the indoor air pollution to join, which are volatile 90%, while the solvent in the paint drying process TVOC released only 25 total %. Because benzene and BTEX is an important component of TVOC, so some people only detect TVOC, without detection of benzene and BTEX: However, there are only a total of benzene detected without detection TVOC: Some units are both testing. It mainly depends on the requirements and conditions. TVOC higher detection technology and equipment requirements, usually by gas chromatography, but also by Fourier transform infrared spectroscopy, fluorescence spectroscopy, ion chromatography and reflection interference spectroscopy method. They all appear to trace and trace levels, so easily overlooked. They mainly come from: organic solution: such as paints, water paints, adhesives, cosmetics, detergents, rubber caulking; Building materials: such as plywood, foam insulation materials, plastic sheets; interior decoration materials indoor air testing has 3 One big trap, live out the test results many domestic indoor air testing company, but some are without certification of Quality Supervision Bureau, consumers in the choice detection unit must pay attention, do not be fooled. No certification qualified testing agency after the indoor testing, site of the test results, it turns out, most of this detection method is void. The correct air testing is done in the laboratory, formaldehyde and ammonia by spectrophotometer, TVOC and BTEX is detected by gas chromatography. Second, in order to take advantage of free testing bait free indoor pollution detection bait. Some management companies use some consumers want to spend more afraid of the indoor environment testing indoor air pollution psychology to free indoor environment testing indoor air pollution as bait CMA, then high indoor environmental pollution control, these companies make is Late lot of money management fees. Third, the false indoor pollution levels are also some testing organizations, will exaggerate the test results, the extent of false indoor environmental pollution, in order to make indoor pollution control business. They take rapid detection of non-standard or non-standard way to intimidate consumers a false police report. In fact, the formal indoor testing is not immediately get. Consumers choose testing company must pay attention to, to choose with GB / T18883 "indoor air quality standards," the ability to detect all 19 parameters, measurement certification by passing the examination and obtain qualified institutional detected, these companies should be carried out every year equipment calibration, trustworthy. Indoor air pollution Affiliate | CMA qualification (certified) | indoor air pollution by Chuzhou Green Ribbon Indoor Environmental Services Limited. Chuzhou Green Ribbon Indoor Environmental Services Ltd. (www.lsd5188.com) is a leader in Chuzhou, Environment Projects, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In the Green Ribbon environmental leadership with the staff warmly welcome all inquiries negotiations to create a better environment green ribbon future.