The main methods now to evaluate Pb availability in soil are chemical extraction, plant adsorption, microbial and enzyme activation and isotopes tests.
Feasibility and process are discussed in severe corrosion environment; and availability of such kind of inspection on chemical equipment is discussed through primary analysis of its economics.
The availability of mineral nutrients for plants is determined by the chemical, physical and biological characteristics of soils, especially by root-induced changes in the rhizosphere.