"The first batch of evaluation models in 2020"
The first batch of evaluation results in 2020
"VOC/VOI result evaluation sample car score composition"
In this test of volatile organic compounds (VOC) in the car, under the conditions of room temperature, lighting and ventilation, the health hazard index of benzene in the car scored higher, and the deduction of comprehensive pollution index was mainly concentrated in the lighting condition. Comparing the results of five-star evaluation and four-star evaluation, the gap mainly comes from the health hazard index of formaldehyde at room temperature, but this does not mean that formaldehyde can't be controlled-it is found in the test that the formaldehyde emission of some models at room temperature is only 10% of the national standard limit, even at high temperature.
In the VOI test, the VOI of most vehicles under normal temperature and light conditions is equivalent to the overall evaluation result of 20 19, but from the spectrogram of the analyzer, the hazards of this batch of vehicles to human health and the types of high-intensity odor substances in the air are obviously reduced. Alkanes (straight chain, branched chain and cycloalkane) which are less harmful to health become the main components of VOC substances in automobiles. Although some esters, ethers and alcohol compounds have also been detected, both types and contents have been greatly improved compared with the models evaluated in the same period last year. ?
"EMR result evaluation sample car score composition"
In the electromagnetic radiation (EMR) assessment, the results of EMR assessment have been significantly improved compared with last year. At the same time, in order to respond to consumers' concerns, the health index evaluates and studies the electromagnetic radiation in the "central control large screen area". It is found that the low-frequency magnetic field radiation in the central control panel area of the vehicle is at the low noise level of the measuring equipment, and there is no obvious correlation between the size of the central control panel and the low-frequency magnetic field radiation. This shows that the saying that "big screen radiation is harmful to health" circulating on the Internet is unscientific.
It is worth noting that with the deepening of the research on automobile health index, the index evaluation procedure is also being further improved. China automobile health index (PM) test and evaluation procedures have been solicited in official website and will be officially released in the near future; The testing and evaluation procedure of in-vehicle sensitization risk (VAR) has also passed several rounds of technical discussions and expert review. The draft procedure will be published on the Internet for comments this year, and the evaluation dimension of automobile health index will be more comprehensive and diversified in the future. (Compile/car home? Li Na)