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Sensitivity enhancement for inductively-coupled plasma atomic emission spectrometry of cadmium by suction-flow on-line ion-exchange preconcentration |
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| Authors: | Takahiro Kumamaru Hiroshi Matsuo Yasuaki Okamoto Masahiko Ikeda |
| Institution: | Department of Environmental Science, Faculty of Integrated Arts and Sciences, Hiroshima University, 1-1-89 Higashisenda-machi, Naka-ku, Hiroshima 730 Japan;Institute of Environment and Public Health of Okayama Prefecture, Uchio, Okayama 710-02 Japan;Engineering Department, Nippon Jarrel-Ash Co. Ltd., 28 Joshungamae-cho, Shimotoba, Fushimi-ku, Kyoto 612 Japan |
| Abstract: | A column of iminodiacetate chelating resin is used to preconcentrate cadmium by a factor of 25-fold for a 5-ml sample. The sampling rate was 25 h?1, and the detection limit 0.05 ng Cd2+ ml?1. The r.s.d. for 0.1 μg Cd2+ ml?1 was 2.2% (n = 10). This technique was applied to the determination of cadmium in certified biological reference materials and waste-water samples. |
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