Spectrophotometric determination of trace elements

The introduction briefly discusses some theoretical and practical problems of the spectrophotometric determination of trace elements. Among other subjects, the possibilities of spectrophotometric methods in determination of traces, the sensitivity of methods and its increase, preconcentration of trace elements, blank, the purity of reagents and vessels, precision and accuracy are referred. The second section discusses absorbing systems as a base of the sensitive spectrophotometric methods: complexes with organic and inorganic reagents, ternary complexes, amplification reactions, various organic reactions, and the role of the extraction. The third section contains the critical selection of the sensitive methods for individual elements. The following sections are devoted to the determination of the trace elements in samples of various types, such as biological materials, foods, waters and effluents, air, minerals, semiconductor materials, high purity chemicals, and metals. 738 references, 18 tables