Transparent polymer sensor for visual and photometrical detection of thiocyanate in oilfield water

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

A novel colorimetric sensor has been proposed for sensitive and accurate visual and spectrophotometric detection of thiocyanate using polymethacrylate matrix, which also has the potential for use with samples without pretreatment. The determination method is based on shaping of a Fe3+-thiocyanate colored complex into a transparent polymer matrix, followed by measurement of absorbance at 490 nm. The principle of this colorimetric sensor is not ordinary colorimetry, but a new colorimetric strategy that combines solid phase extraction and spectrophotometric determination of thiocyanate following completion of the color change processes. The method ensures determination of 0.8–30.0 mg L−1 of thiocyanate with the detection limit of 0.3 mg L−1. The proposed simple method makes it possible to determine visually in the concentration above 6.0 mg L−1 using a color scale. The test results show that the polymethacrylate matrix can be used for determination of thiocyanate in oilfield water.

Original languageEnglish
Pages (from-to)960-963
Number of pages4
JournalJournal of Petroleum Science and Engineering
Volume172
DOIs
Publication statusPublished - 1 Jan 2019

Keywords

  • Colorimetric sensor
  • Oilfield water
  • Polymethacrylate matrix
  • Solid phase spectrophotometry
  • Thiocyanate
  • Tracer analysis

ASJC Scopus subject areas

  • Fuel Technology
  • Geotechnical Engineering and Engineering Geology

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