GB 7887-1987 森林植物与森林枯枝落叶层全硅、全铁、全铝、全钙、全镁、全钾、全钠、全磷、全硫、全锰、全铜、全锌的测定(硝酸-高氯酸消煮法)薆

determination of total silica,total iron,total aluminium, total calcium,total magnesium,total potassium,total sodium,total phosphorus,total sulphur,total manganese,total copper,total zinc in forest plant and fores