微量元素的浮选富集是近年来才被注意并用于分析化学中的一种新方法。这种方法简便、快速而且富集比较大,它的有关方面在文献中有过一些论述。在国外它已被用于水、海水等样品中微量元素的分离与富集,可以富集ppm～ppb级的金属离子;在国内,对其实际应用尚无报道。 The flotation enrichment of trace elements is a new method which has been noticed and used in analytical chemistry in recent years. This method is simple, rapid and rich, and its related aspects have been discussed in the literature. In foreign countries, it has been used for the separation and enrichment of trace elements in samples of water, seawater and the like, and can enrich metal ions in ppm to ppb level. In China, there is no report about its practical application.