In the podzol profile the coefficients reflected the marked horizon differentiation.

对灰化土剖面，系了明显的层位分异。

The copper ion content is determined with direct spectrophotometry after the engine oil was incinerated,dissolved with acid and developed with Neocuproin-Hydroch lorid Monohydrat.

将机油灰化、溶解后,新亚铜灵显色、直接光度法铜离子含量,样品回收率在92。