n.阴离子；负离子
Generally ionic salts with a large anion should have a high dissociation constant. 一般情况下，包含大的阴离子的盐具有高的分解常数。
In this article, ion chromatography was used to analyze anion in latex. 采用离子色谱法对乳胶制品中阴离子进行分析。
On the contrary, the increasement of anion in the living space can directly have the use of health care and treatment. 与此相反，增加人类生存空间中负离子数量，可直接带来保健和治疗作用。
Tourmaline with the properties of pyroelectricity and piezoelectricity is a kind of functional material that can spontaneously produce anion without adscititious energy. 电气石具有热电性和压电性，是一种不需外加能源就能自发产生负离子的功能材料。
