| 摘要 |
<p>A process for the treatment of brass components to reduce leachable lead therefrom when the components are exposed to water which includes the steps of first cleaning the brass components with a cleaning agent in the form of a mineral acid, a mineral acid plus an oxidizing agent, ammonium chloride or ferric chloride and then rinsing to remove the cleaning agent. Thereafter, the brass components are contacted with a lead removal reagent after which the brass components are washed again. It is also possible, in the preferred embodiment, to remove any leachable lead remaining on the surface of the brass components by the additional step of treating the brass components with a water soluble acid and thereafter rinsing the components to leave the components substantially free of the acid. The process as disclosed reduces the leachable lead to well within the most stringent state and/or federal guidelines.</p> |
