Views: 59 Author: Stephen Xie Publish Time: 13-08-2019 Origin: Site
Physical method takes the sample mass,
then measures the volume, finds the average density,
and finally uses the density of copper, the density of aluminum
and the average density to cross-cross to determine the copper content.
After taking the sample weighing quality by chemical method,
put a sufficient amount of concentrated nitric acid,
and pass the generated gas into the water.
Finally, measure the volume of nitric oxide,
and calculate the copper content by conversion.
Stephen Xie