method is described for the flotation and determination of Mo(VI) in water at ng/ml levels. Mo(VI) is preconcentrated and separated by adsorbing colloid flotation employing aluminium(III) hydroxide as collector and sodium lauryl sulphate as surfactant at pH 5.3 ± 0.1. The molybdenum content in the froth is estimated by using the catalytic wave of Mo(VI) in the presence of nitrate, by charging current compensated d.c. polarography (CCCDCP) or differential pulse polarography (DPP). The effect of variables such as pH, ionic strength, concentration of collector and surfactant, time of stirring and gas flow-rate on the recovery of Mo by flotation is reported. The effects of various cations and anions onudthe flotation and determination of Mo are studied. This method is employed for the determination of molybdenum in natural fresh water samples.ud
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机译：描述了用于浮选和测定ng / ml水中Mo（VI）的方法。通过吸附胶体浮选法对Mo（VI）进行预浓缩和分离，方法是使用氢氧化铝（III）作为捕收剂，十二烷基硫酸钠作为表面活性剂，pH 5.3±0.1。泡沫中的钼含量是通过在硝酸盐存在下使用Mo（VI）的催化波并通过充电电流d.c估算的。极谱（CCCDCP）或微分脉冲极谱（DPP）。报道了pH，离子强度，集电器和表面活性剂浓度，搅拌时间和气体流速等变量对浮选回收Mo的影响。研究了各种阳离子和阴离子对钼的浮选和钼含量的影响。该方法用于测定天然淡水样品中的钼。 ud
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