【摘要】 研究了硫酸-二苯羟乙酸-氯酸钾-CTMAB体系中钨的极谱催化性质.证实了该极谱波是吸附催化波.发现了CTMAB能改善波形,增加灵敏度,同时能消除较大量钼的干扰。利用CHCl₃萃取钨与氯化6,7-二羟基-2,4-二苯基苯并吡喃的络合物,以浓缩海水中超痕量的钨,然后用催化极谱法测定.水中钨的测定灵敏度为5×10^-11M.方法选择性好,简便、快速.除能测定海水外,还可用于测定江水、湖水、温泉水以及自来水等,均取得了满意的结果.更多还原

【Abstract】 The polarographic catalytic characteristics of tungsten have been investigatedwith the system H₂SO₄-HA（benzilic acid） -KClO₃-CTMAB. It was found that the presence of CTMAB improves the shape of polarographic wave, increases the sensitivity of tungsten determination and eliminates the interfering effect of molybdenum. The procedure suggested in this paper is sufficient enough to hold the selectivity, simplicity and rapidity. The sensitivity in sea water is 5×10^-11M.Besides, it can also be applied to determine tungsten in water of rivers and lakes, and in hot underground water and tap water. Good results have been obtained for each and all.更多还原