摘要
痕量化学是研究痕量物质特殊规律的一门新的化学学科。为推动其发展本文着重论述在极稀浓度时,强电解质在活度和浓度关系上,弱电解质在离解度上表现的特殊性以及难溶物质的沉淀条件、沉淀形式和痕量物质的反应速率变化规律等。另外,从痕量化学观点引进痕量物质体系总为多相、多组分体系和痕量元素普遍存在的概念。
Trace chemistry is intruduced in this paper as a newly developing branch of chemistry dealing with the properties and states of substances in trace amounts or trace con- centrations and the laws governing their physico-chemical behaviour.The main emphases here are placed on the peculiarities of trace substances exhibiting in their reaction rates,the dissociation of weak electrolytes,the precipitation of sparingly soluble substances etc.Be- sides,some specific concepts of trace chemistry are presented such as multicomponent-het- erogeneous systems and the minopresence of trace elements.
关键词
痕量化学
痕量分析
微量化学
trace chemistry
trace analysis
micro-chemistry
