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- W2010409582 abstract "The determination of sodium in pure limestones by atomic absorption spectrophotometry is described. The interferences of chloride and calcium ions are discussed; chloride affects the dissociation equilibrium, and calcium lowers the evaporation rate of sodium, thus lowering the concentration of free sodium atoms in the flame. The sensitivity achieved with a rather rough apparatus is 0.15 p.p.m. sodium. Une méthode spectrophotométrique par absorption atomique est décrite pour le dosage du sodium dans la chaux. Les auteurs ont examiné l'influence de Cl- et de Ca2+. Les chlorures affectent l'équilibre de dissociation; le calcium abaisse la vitesse d'évapuration du sodium, diminuant ainsi la concentration des atomes libres de sodium dans la flamme. La sensibilité obtenue à l'aide d'un appareillage simple est de 0.15 p.p.m. sodium. Die Bestimmung des Natriums in reinem Kalkstein mit Hilfe der atomaren Absorptionsspektroskopie wird beschrieben. Es werden die Störungen, die durch Chlorid- und Calcium-Ionen hervorgerufen werden, diskutiert. Die Chlorid-Ionen beeinflussen das Dissoziationsgleichgewicht, und die Calcium-Ionen erniedrigen den Verdampfungsgrad des Natriums und verringern damit die Konzentration von freien Natriumatomen in der Flamme. Mit einer einfachen-Apparatur betrug die Empfindlichkeit 0.15 p.p.m. Natrium." @default.
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- W2010409582 date "1963-01-01" @default.
- W2010409582 modified "2023-10-15" @default.
- W2010409582 title "The determination of sodium in pure limestones by atomic absorption spectrophotometry" @default.
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- W2010409582 doi "https://doi.org/10.1016/s0003-2670(00)88604-3" @default.
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