| 摘要 |
<p>In an enclosed environment subject to increased levels of ozone caused, for example by electrostatic equipment such as laser printers and photocopiers, the levels of ozone are reduced by releasing vapour from a terpenoid or a mixture of terpenoids into the environment at a controlled rate. In one aspect the vapour is released from an emission element of absorbent material impregnated with the or each terpenoid compound and located within a container which in use allows free circulation into the environment. The absorbent/emission characteristics of the absorbent material are selected to provide an extended release of the terpenoid or terpenoids into the environment.</p> |
