Optical Sensor of Anionic Surfactants Using Solid-Phase Extraction with a Lactone-form Rhodamine B Membrane
Optical Sensor of Anionic Surfactants Using Solid-Phase Extraction with a Lactone-form Rhodamine B Membrane
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DOI：
10.2116/analsci.24.809
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发表时间：
2008-06
影响因子：
1.6
通讯作者：
T. Masadome;M. Akatsu
中科院分区：
文献类型：
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作者：
T. Masadome;M. Akatsu
研制了一种检测阴离子表面活性剂的光学传感器。光学传感膜是一种2-硝基苯基辛基醚增塑的聚氯乙烯膜，其中含有内酯形式的罗丹明B（L-RB）。光学膜对阴离子表面活性剂的响应是阴离子表面活性剂和质子共萃取到PVC膜中的结果。L-RB与萃取的阴离子表面活性剂形成离子缔合物，同时，所形成的L-RB离子缔合物伴随着光谱变化。也就是说，提取的阴离子表面活性剂将膜的颜色从浅粉红色改变为深粉红色（吸收最大值; 558 nm）。该光学膜对阴离子表面活性剂如十二烷基苯磺酸盐、十二烷基硫酸盐和磺基琥珀酸二-2-乙基己酯在1 - 50 μM浓度范围内有响应。
An optical sensor for the detection of anionic surfactants was developed. The optical sensing membrane is a 2-nitrophenyloctyl ether-plasticized poly(vinyl chloride) membrane incorporating a lactone-form Rhodamine B (L-RB). The response of the optical membrane to anionic surfactants was a result of the ion-pair coextraction of an anionic surfactant and a proton into the PVC membrane. The L-RB forms an ion associate with the extracted anionic surfactant; simultaneously, the formed L-RB ion associate is accompanied by a spectral change. Namely, the extracted anionic surfactant changes the color of the membrane from light pink to dark pink (absorption maximum; 558 nm). The optical membrane responds to anionic surfactants, such as dodecylbenzenesulfonate, dodecylsulfate and di-2-ethylhexyl sulfosuccinate in the concentration range from 1 to 50 μM.