Solvent composition for liquid scintillation counting
Abstract
Abstract A SOLVENT COMPOSITION FOR DISSOLVING SAMPLES FOR LIQUID SCINTILLATION COUNTING CONSISTING ESSENTIALLY OF (A) A SOLVENT SUITABLE FOR USE IN LIQUID SCINTILLATION COUNTING, (B) AT LEAST ONE QUATERNARY AMMONIUM BASE SELECTED FROM THE GROUP OF THE FORMULA: (R''-N(-X)(-R")-CH3)(+) (-)O-Y WHEREIN R'' AND R" ARE ALKYL RADICALS OF FROM 4 TO 18 CARBON ATOMS, X IS SELECTED FROM THE GROUP CONSISTING OF METHYL AND BENZYL RADICALS, AND Y IS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN AND LOWER ALKYL RADICALS, THE PREDOMINANT CLASS OF QUATERNARY AMMONIUM CONSISTING OF THE GROUP WHEREIN R'' AND R" CONTAIN FROM 4 TO 14 CARBON ATOMS, (C) METHANOL, AND (D) AN ALCOHOL SELECTED FROM THE GROUP CONSISTING OF T-PENTYL ALCOHOL AND 2-METHOXY ETHANOL. THE QUATERNARY AMMONIUM BASE PREFERABLY IS DIDODECYLDIMETHYLAMMONIUM HYDROXIDE OR METHOXIDE, AND IS PRESENT IN AT LEAST 0.25 MOLAR CONCENTRATION. THE SOLVENT ADVANTAGEOUSLY IS TOLUENE, BENZENE, XYLENE, OR DIOXANE, AND IS PRESENT IN 60-70% BY VOLUME. THE T-PENTYL ALCOHOL OR 2-METHOXY ETHANOL PREFERABLY ARE PRESENT IN 410% BY VOLUME.
Inventors
- 👤 Richard V Webb
Bibliographic Details
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