"RIV/61989592:15310/05:00002105" . . "Lemr, Karel" . "2"^^ . . . "A rapid analytical procedure was developed and tested for routine identification and quantification of methylbenzoquate in feeds by liquid chromatography (LC). The ground feed samples were extracted using methanol-water (80 + 20, v/v) at 65 degrees-70 degrees C in a water bath for premixes and in dichloromethane at 45 degrees C in a water bath for final feeds, respectively. The extract of final feeds was cleaned using solid-phase extraction on silica columns. Both the final feed and premix extracts were analyzed by reversed-phase LC on a NovaPak C18 column (3.9 x 150 mm; 4 mu m) with methanol-acetonitrile-water-phosphoric acid (340 + 350 + 308 + 2, v/v) as mobile phase. Fluorescence detection was performed at excitation and emission wavelengths of 265 and 390 nm, respectively. Alternatively, post-column addition of sulfuric acid solution was used to decrease the determination limit. The recovery of methylbenzoquate, in a concentration range of 0.5-10 mg/kg, was 105.0 +/- 7.3%. The limit of quantitatio" . . . "673-678" . "Determination of methylbenzoquate in premixes and animal feeds USING liquid chromatography with fluorescence detection"@en . "15310" . "RIV/61989592:15310/05:00002105!RIV06-MSM-15310___" . "88" . . "Stanoven\u00ED methylbenzokv\u00E1tu v premixech a zv\u00ED\u0159ec\u00EDm krmivu pomoc\u00ED kapalinov\u00E9 chromatografie s fluorescen\u010Dn\u00ED detekc\u00ED"@cs . . "JOURNAL OF AOAC INTERNATIONAL" . "1060-3271" . "Determination of methylbenzoquate in premixes and animal feeds USING liquid chromatography with fluorescence detection" . "Z(MSM 153100013)" . "\u010Cl\u00E1nek se zab\u00FDv\u00E1 stanoven\u00EDm methylbenzokv\u00E1tu v premixech a zv\u00ED\u0159ec\u00EDm krmivu pomoc\u00ED kapalinov\u00E9 chromatografie s fluorescen\u010Dn\u00ED detekc\u00ED."@cs . "517612" . . "Dousa, M." . . . "A rapid analytical procedure was developed and tested for routine identification and quantification of methylbenzoquate in feeds by liquid chromatography (LC). The ground feed samples were extracted using methanol-water (80 + 20, v/v) at 65 degrees-70 degrees C in a water bath for premixes and in dichloromethane at 45 degrees C in a water bath for final feeds, respectively. The extract of final feeds was cleaned using solid-phase extraction on silica columns. Both the final feed and premix extracts were analyzed by reversed-phase LC on a NovaPak C18 column (3.9 x 150 mm; 4 mu m) with methanol-acetonitrile-water-phosphoric acid (340 + 350 + 308 + 2, v/v) as mobile phase. Fluorescence detection was performed at excitation and emission wavelengths of 265 and 390 nm, respectively. Alternatively, post-column addition of sulfuric acid solution was used to decrease the determination limit. The recovery of methylbenzoquate, in a concentration range of 0.5-10 mg/kg, was 105.0 +/- 7.3%. The limit of quantitatio"@en . "Determination of methylbenzoquate in premixes and animal feeds USING liquid chromatography with fluorescence detection" . . "Determination of methylbenzoquate in premixes and animal feeds USING liquid chromatography with fluorescence detection"@en . "3" . "6"^^ . . . . "Str\u00E1nsk\u00FD, Zden\u011Bk" . "Stanoven\u00ED methylbenzokv\u00E1tu v premixech a zv\u00ED\u0159ec\u00EDm krmivu pomoc\u00ED kapalinov\u00E9 chromatografie s fluorescen\u010Dn\u00ED detekc\u00ED"@cs . . "THIN-LAYER CHROMATOGRAPHY; NEQUINATE; IDENTIFICATION; FEEDINGSTUFFS; ADDITIVES"@en . . "[7326D77C1D08]" . . "3"^^ . . "US - Spojen\u00E9 st\u00E1ty americk\u00E9" .