Poly(vinyl alcohol)(PVA)-based polyanion was prepared by esterification of PVA with sulfuric acid.
硫酸与
乙
醇(PVA)经酯化制备PVA


电解质。
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The other category is complexed calcium, which is where the positively charged calcium is ionically linked to tiny negatively charged molecules like oxalate, which is a small anion that are normally found in our blood in small amounts.
另一小组
结合钙,带正电
钙离
共价结合至微小
带负电
离
上,例如草酸盐离
;草酸盐
体积较小
阴离
,通常少量存在于血液中。