Bamboo charcoal, activated carbon adsorption of formaldehyde is good, can lock formaldehyde?

　　Bamboo charcoal has a strong adsorption capacity for formaldehyde and has experimental evidence. The key question is – can bamboo charcoal lock these formaldehyde?

　　The experimental results were disappointing. Once these bamboo charcoal saturated with formaldehyde is placed in an empty room free of formaldehyde, formaldehyde will be released quickly. Within 3 hours, the formaldehyde content per gram of bamboo charcoal dropped to 34 mg, and after 1 day it fell to 1.6 mg - the decontamination product became a source of pollution.