Determination of ultramicro amounts of selenium by gas chromatography.
4-Chloro-o-phenylenediamine reacts with selenous acid at pH 0-1 to form 5-chloropiaselenol, which is then extracted into 1 ml of toluene. The toluene layer is injected into an electron-capture detector gas Chromatograph. From the peak height selenium is determined, the minimum amount detectable being about 0.04 mug.
Nakashima
S
S
Department of Chemistry Faculty of Science Okayama University Okayama-shi, Japan.
Tôei
K
K