吐温60胶束增敏分光光度法测定油田采出水中铝含量

Determination of aluminium ion in oilfield water by Tween 60 micellar-solubilized spectrophotometry

提出一种非离子表面活性剂吐温60胶束增敏可见分光光度法测定油田采出水中铝离子的新方法．在pH=5．0的HAc-NaAc缓冲溶液中，A1（Ⅲ）-铬天青S-吐温60形成三元配合物，最大吸收波长612nm处，铝离子质量浓度在0．005～0．3mg·L-1范围内与吸光度值呈良好的线性关系，相关系数为0．9974，检出限为0．39μg·L-1，该方法用于油田采出水样中铝含量测定，能取得满意的实验结果．

A new method for the determination of aluminum ion is described in this work. The analytical procedure is based on the visible spectrophotometric method which is increased in the medium of Tween 60 nonionic surfactant. The linear range of calibration curve is 0. 005~0. 3 mg · L-1 and the detection limit is 0. 39 μg ·L-1 with the detection wavelength 612 nm. The method has been applied in the oilfield produced water for the determination of aluminum ion with satisfactory results.