Determination of oil-in-water using nanoemulsions as solvents and UV visible and total organic carbon detection methods

TALANTA

卷:107

Article

Costa, Josane A.¹  Farias, Naiara C.¹  Queiros, Yure G. C.¹  Mansur, Claudia R. E.¹ 

[1] Univ Fed Rio de Janeiro, Inst Macromol, Lab Macromol & Colloids Petr Ind, BR-21941598 University City, RJ, Brazil

关键词: Nanoemulsions;    Oily water;    UV-vis;    TOC;   

DOI  :  10.1016/j.talanta.2013.01.040

来源: Elsevier

【 摘 要 】

The aim of this study was to investigate the application of oil in water (O/W) nanoemulsion as solvent in the extraction step for determination of oil content in oily water, measured using a UV visible spectrophotometer (UV-vis) and a total organic carbon (TOC) analyzer. The optical micrographs and distribution size curves showed that the use of a small amount of nanoemulsion was capable of transforming the oily water in a colloidal dispersion that can be read in the UV-vis and TOC-VCHS devices. The oil content results obtained showed great accuracy between the measurements, with very low average standard deviation (similar to 5%) for both UV-vis and TOC-VCHS. The new methods suggested in this work are very promising, since they allow simple, quick and accurate analyses, and especially require a lower volume of solvent (less than 1%) compared to those used in conventional analytic methods. (C) 2013 Elsevier B.V. All rights reserved.

【 授权许可】

Free