caa a22 4500 465746446 CHVBK 20180323111822.0 cr unu---uuuuu 170327e19900101xx s 000 0 eng 10.1007/BF00321885 doi (NATIONALLICENCE)springer-10.1007/BF00321885 Cu-Chelex as a selective adsorbent for o-nitroso derivatives of phenolic substances [Elektronische Daten] [Takafumi Ohta, Kohji Shikinami, Yukiyo Iga, Shoji Takitani] Summary: Chelex resins in several metal forms were tested for selective uptake of o-nitrosonaphthols and o-nitrosophenols from aqueous solution. Cu-Chelex was the most efficient resin over a wide pH range, and the taken-up nitroso compounds were effectively eluted with concentrated ammonia: acetonitrile (4:1, v/v) after washing the resin with acetonitrile to eliminate non-specific binding. The upper and lower limits of uptake capacity of the resin for 1-nitroso-2-naphthol were 0.5 μmol/100 mg and 1.25 μmol/100 mg, respectively. A preliminary recovery experiment using urine and cucumber juice showed that Cu-Chelex would be useful for screening of o-nitroso derivatives of phenolic substances in complicated samples such as biological fluids and foods. Springer-Verlag, 1990 Ohta Takafumi Faculty of Pharmaceutical Sciences, Science University of Tokyo, 12 Ichigaya-Funagawara-Machi, Shinjuku-Ku, 162, Tokyo, Japan aut Shikinami Kohji Faculty of Pharmaceutical Sciences, Science University of Tokyo, 12 Ichigaya-Funagawara-Machi, Shinjuku-Ku, 162, Tokyo, Japan aut Iga Yukiyo Faculty of Pharmaceutical Sciences, Science University of Tokyo, 12 Ichigaya-Funagawara-Machi, Shinjuku-Ku, 162, Tokyo, Japan aut Takitani Shoji Faculty of Pharmaceutical Sciences, Science University of Tokyo, 12 Ichigaya-Funagawara-Machi, Shinjuku-Ku, 162, Tokyo, Japan aut Fresenius' Journal of Analytical Chemistry Springer-Verlag 336/5(1990-01-01), 385-388 0937-0633 336:5<385 1990 336 216 https://doi.org/10.1007/BF00321885 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00321885 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Ohta Takafumi Faculty of Pharmaceutical Sciences, Science University of Tokyo, 12 Ichigaya-Funagawara-Machi, Shinjuku-Ku, 162, Tokyo, Japan aut NATIONALLICENCE 700 1- Shikinami Kohji Faculty of Pharmaceutical Sciences, Science University of Tokyo, 12 Ichigaya-Funagawara-Machi, Shinjuku-Ku, 162, Tokyo, Japan aut NATIONALLICENCE 700 1- Iga Yukiyo Faculty of Pharmaceutical Sciences, Science University of Tokyo, 12 Ichigaya-Funagawara-Machi, Shinjuku-Ku, 162, Tokyo, Japan aut NATIONALLICENCE 700 1- Takitani Shoji Faculty of Pharmaceutical Sciences, Science University of Tokyo, 12 Ichigaya-Funagawara-Machi, Shinjuku-Ku, 162, Tokyo, Japan aut NATIONALLICENCE 773 0- Fresenius' Journal of Analytical Chemistry Springer-Verlag 336/5(1990-01-01), 385-388 0937-0633 336:5<385 1990 336 216 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer