A Simple and Rapid Method for the Detection of Non-Ionic Surfactants

Abstract

A spectrophotometric approach for the detection of non-ionic surfactant (Triton X-100) has been proposed in this paper. This method does not involve extraction of the ion-associate with harmful solvents, but employs adhesion of the ion-association of potassium/non-ionic surfactants complex and tetraphenylporphyrin tetrasulfonic acid obtained by vigorous shaking. The adhered ion-associate was dissolved with water and its absorbance was measured. The sensitivity for Triton X-100 was determined to be 0.146 (expressed as absorbance of 1 mg/L solution). The adhesion tendency of ion-associate was found to be dependent on the water contact angle, which in turn was influenced by a high adhesion of the ion-associate and by low blank values. In this respect, a tetrafluoroethylene vessel was found to be the most suitable for the detection of non-ionic surfactants. This spectrophotometrical method is simply and rapidly performed by a procedure based on mechanical shaking and can be employed to detect non-ionic surfactants containing more than 7 polyethylene oxide units.

Self-Assembled Curved Macroporous Photonic Crystal-Based Surfactant Detectors

“…The methodology provides a detection range between 0.01 and 1 wt %, which covers the surfactant concentrations present in most industrial wastewater and municipal sewer discharges . However, even though the detection range is compared fairly with previously reported detection technologies, it is not surprising that the minimum quantification limit of the photonic crystal-sensing materials for surfactants is less sensitive to the detection limits of other detection methods. − ,− …”

Fluorescent detection of decamethoxine by reaction with eosin Y in medicines

“…4 Surfactant solutions of various types such as cationic, anionic and nonionic are used as organized media. 5,6 The main analytical forms of application of ionic surfactants in the analysis are their associations with counterions of organic reagents or metal complexes of the ionic type. 1 Solutions of nonionic surfactants are often used to modify the properties of organic 6 or metal complex associates 7 at surfactant concentrations above CMC.…”

Modified turbidimetric method for the determination of non-ionic surfactants with nessler’s reagent

“…Пропонують різні методи виявлення неіонних поверхнево-активних речовин [2][3][4][5][6], які потребують складних аналітичних інструментів [3,5]. Однак є потреба у проведенні аналізу з використанням простого та широкодоступного аналітичного обладнання.…”

“…Такі характеристики дають можливість формувати комплекси з лужними металами, зокрема калієм, рубідієм, та іонні асоціати з аніонними барвниками етилового ефіру тетрабромфенолфталеїну [2].…”