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

对灰土剖面，系数反映了明显的层位分异。

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、解后,新亚铜灵显色、直接光度法测定铜离子量,样品回收率在92。