水道水質基準の測定について

摘要

In Japan, the drinking water quality standards, originally enacted in 1958, were thoroughly reviewed and revised in 2003 mainly because of health risk caused by disinfection byproducts and WHO's full revision of the guidelines for drinking water quality. In the 2003 revision, nine of the standard items were deleted and 13 new items were added, which resulted in the increase of the number of the items from 46 to 50. Since then the standards, including items and analysis methods, have been revised as needed. The present paper discusses the methods of analyzing drinking water using atomic absorption spectrometry (AAS), inductively coupled plasma atomic emission spectrometry (ICP-AES), ion chromatography (IC), high-performance liquid chromatography (HPLC), gas chromatography-mass spectrometry (GC-MS), ultraviolet-visible spectrophotometry (UV), and total organic carbon analyzers (TOC) and also using the specialized functions of analytical instruments.%日本の水道水水質基準については，平成15年度制定された50項目について逐次改正が行われている。本報ではこれらの水道水水質基準のうち原子吸光光度計（AAS），誘導結合プラズマ発光分光分析計（ICP-AES），イオンタロマトグラフ（IC），液体クロマトグラフ（HPLC），ガスタロマトグラフ質量分析計（GC-MS），紫外可視分光光度計（UV）と全有機体炭素計（TOC）を用いた分析法について述べた。装置の特長を生かした方法も含め解説した。