研究了染料曙红B与盐酸异丙嗪的结合反应.在pH=3.50的Walpole介质中,曙红B本身的共振光散射信号较弱,与盐酸异丙嗪结合形成离子缔合物后,体系的共振光散射明显增强,并且光散射增强强度与盐酸异丙嗪在一定浓度范围内成正比,据此建立了一种高灵敏测定盐酸异丙嗪的方法.在体系的最大散射波长363 nm处,测得盐酸异丙嗪的线性范围为7.5×10-8～4.5×10-6 g/mL,检测限为1.8×10-8 g/mL,用于盐酸异丙嗪片剂、针剂、人血清及尿样中盐酸异丙嗪的测定,结果令人满意.
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