"37903" . "8"^^ . . . . . . "The possibility of identifying selected opioids by spectral analysis" . . "RIV/60162694:G45__/14:00520657!RIV15-MO0-G45_____" . "The possibility of identifying selected opioids by spectral analysis"@en . . . "G45" . . "The possibility of identifying selected opioids by spectral analysis" . . . "Vojensk\u00E9 zdravotnick\u00E9 listy" . . "[97420D175C09]" . . "The possibility of identifying selected opioids by spectral analysis"@en . "http://vavtest.unob.cz/registr" . "0372-7025" . "3"^^ . "CZ - \u010Cesk\u00E1 republika" . "3"^^ . "The ability of the examined compounds to create ion pairs wit the selected anionic dyes, allows their determination by the method of extraction spectrophotometry in the visible radiation. These ion pairs are extractable wit an organic solvent immiscible with water. The procedure is based on protonisation of the studied compounds in acidic environment, and consequently their extraction in the form of associate with the anion of the acid dyes into the organic phase, in this case in chloroform. Mentioned methods of analysis may by advantageously used for simple and express determination of fentanyl, alfentanil and remifentanil."@en . . . "4" . . "82" . . "Fentanyl; alfentanil; remifentanil; ion pairs; UV/VIS spectrophotometry; azo dyes."@en . "Hal\u00E1mek, Emil" . "Kobliha, Zbyn\u011Bk" . "The ability of the examined compounds to create ion pairs wit the selected anionic dyes, allows their determination by the method of extraction spectrophotometry in the visible radiation. These ion pairs are extractable wit an organic solvent immiscible with water. The procedure is based on protonisation of the studied compounds in acidic environment, and consequently their extraction in the form of associate with the anion of the acid dyes into the organic phase, in this case in chloroform. Mentioned methods of analysis may by advantageously used for simple and express determination of fentanyl, alfentanil and remifentanil." . "Jel\u00EDnkov\u00E1, Romana" . "I" . . "RIV/60162694:G45__/14:00520657" . .