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

对灰化土剖面，系数反映了明显的层位。

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.

机油灰化、溶解后,新显色、直接光度法测定离子含量,样品回收率在92。