1、The pH of soil is indirect effects of soil selenium content by regulating the water soluble selenium in the soil, exchangeable and acid soluble content of the percentage.
2、The acid depletes the steel surface of acid soluble species, leaving the highly reactive chromium on the surface in a compounded oxide form.
3、How-ever, amounts of acid soluble components of lignin treated with and without xylans were no difference.
4、The present invention relates to an apparatus and a process for producing zinc oxide from an acid soluble zinc-bearing material.
