Your school ionizer can’t do much to fight covid

Last reading, Jeff Critter, director of operational services for the school district of South Dakota Siax Falls, was flooded with offers to clean the air inside the classroom. The ideas are a wide array of different V UV lights, air exchangers, filters – but one seemed particularly promising: a binary ionizer. The system involved a set of electrified tubes, placed in air ducts, which would flood buildings with charged particles or ions. The marketing materials of the Atmosair company promised that it would eliminate contaminants and viruses by imitating the ion-rich air found in an alpine village. The district paid স্থানীয় 2 million to a local vendor to install the system in 33 school buildings. “In the end, we wanted to kill the virus and create a healthier environment, but we wanted this in the long run, not just for Corona,” Crater said.

Read all our coronavirus coverage Here.

The science behind these ion-producing tubes reads like a great example from a high school textbook. Refers to ions which chemists call “frozen”. Blood cells clot together like wounds, the particles of opposite charge glue together, capturing the bad stuff you don’t want in your lungs, such as pollen and mold. Eventually, these tendons take on such a large size that they absorb gravity and fall to the ground without loss. Along with viruses, there is another advantage: ions make the surface proteins used to enter the cell stick, making them less effective invaders. Results, and Banner claim Made on the company’s pitch in schools during the epidemic, the coronavirus dropped 99.92 percent in 30 minutes.

The problem, according to air quality experts, is that there is little evidence to back up such claims. There is very little self-regulated and peer-reviewed research in most cases, including a few standards of how air cleaners manufacturers should test their products. Science may work in principle, or in a controlled lab experiment, but how ionized clears the air in the classroom is a different story. Related related claims Covid-19 Most air cleaner manufacturers, including the particularly suspicious Atomizer, rely on controlled tests that show how ions eliminate viruses found on surfaces, which have little to do with how much the ions clean the air.

Frustrated air quality scientists say the school is creating a game to fund what should be a simpler and proven improvement in school ventilation. “None of these devices have been proven to work,” said Delphine Farmer, an atmospheric chemist at Colorado State University who is studying ionization technology. “Anyone who understands chemistry will say that you should be very careful about using them.”

He added that the biggest concern is the possibility of damage to air cleaner devices. Ionizers in particular have a history of by-products including ozone, formaldehyde and other volatile compounds that can damage the lungs. The New York State Department of Health’s Department of Health’s Atomosair found higher levels of weight where classrooms were running in ionizer tests. Company These searches are controversial And industry certifications indicate that its technology is ozone-free.

However, air purifiers are now common in schools, equipped with federal funding for safe reintroduction and much more, in hopes of getting funding for the Care Act in dozens of districts, as well as buying ionizers using other chemical air-purification treatments. Marwa Jaatari, an air quality consultant in Austin, Texas, made a list of purchases of about ক্র 60 million after the curse investigation. One of the American rescue plans recently approved by Congress Additional 2 122 billion in school aidThe optimism among air cleaner manufacturers and sellers sto “It feels so defeated that after this sudden awakening of indoor air quality, all the money is being diverted to unproven technology,” Jaatari said.

The best ways to improve indoor air quality depend on location, but most experts find it easier to install physical filters than American solutions, such as window openings and testing standards developed by companies such as the American Society of Heating, Refrigerating and Air Conditioning. Engineer, or shelter. Short words for values ​​like MERV and HPA can be a bit confusing but they can filter out what kind of particles and reflect at what rate. The Centers for Disease Control and Prevention says MERV-13 filters are effective for filtering SARS-CoV-2 damaged size aerosols, which can cost around 25 25. If a school can’t force enough air through low-perforation filters, a school may need dozens of filters and potential upgrades to the ventilation system.

Source link

Leave a Reply

Your email address will not be published. Required fields are marked *