The metasomatic process is mostly the substitution of anions in the crystal lattice of minerals making up the matrix of aquifers by anions from polluted groundwater to form new mineral facies.
前者主要是被污染地下水中阴离子替代组成含水层介质骨架的矿物晶格中阴离子，生成新的矿物相的过程。
2
It has been shown that the isotope substitution changes the spectrum of lattice vibration, and brings forth a great influence on the non-radiative transition.