Facial reconstruction

Search LJMU Research Online

Browse Repository | Browse E-Theses

Comparison of electromagnetic wave sensors with optical and low-frequency spectroscopy methods for real-time monitoring of lead concentrations in mine water

Frau, I, Korostynska, O, Mason, A and Byrne, PA (2018) Comparison of electromagnetic wave sensors with optical and low-frequency spectroscopy methods for real-time monitoring of lead concentrations in mine water. Mine Water and the Environment. ISSN 1025-9112

[img]
Preview
Text
Comparison of electromagnetic wave sensors with optical and low-frequency spectroscopy methods for real-time monitoring of lead concentrations in mine water.pdf - Published Version
Available under License Creative Commons Attribution.

Download (2MB) | Preview

Abstract

The feasibility of using novel electromagnetic wave sensors for real-time monitoring of metal pollution in water was assessed. Five solutions with different concentrations of lead (0, 1, 10, 50, 100 mg/L) were measured using several sensing methods: UV-Vis spectroscopy, low frequency capacitance and resistance measurements, and two sensing systems based on microwave technology. With this last approach, two sensing devices were used: a resonant cavity and a planar sensor with gold interdigitated electrode design printed on a PTFE substrate with a protective PCB lacquer coating. Results confirmed the ability of these systems to quantify the lead concentration as changes in spectrum signal at specific frequencies of the electromagnetic spectrum. Spectra were unique, with clearly observed shifts in the resonant frequencies of the sensors when placed in direct contact with different lead solutions, demonstrating the possibility of continuous monitoring with great sensitivity, selectivity, and high spatial and temporal resolution. Consequently, determination of trace and toxic metals using microwave spectroscopy is a promising alternative to traditional grab-sampling and laboratory based analyses. On-line and continuous monitoring of real-time metal concentrations offers the potential for a more effective emergency response and the platform for better scientific understanding and remediation of contaminated mine drainage.

Item Type: Article
Additional Information: The final publication is available at link.springer.com via http://dx.doi.org/10.1007/s10230-018-0511-7
Uncontrolled Keywords: 0914 Resources Engineering And Extractive Metallurgy
Subjects: Q Science > QD Chemistry
T Technology > TD Environmental technology. Sanitary engineering
Divisions: Built Environment
Civil Engineering
Publisher: Springer Verlag
Date Deposited: 06 Nov 2017 10:49
Last Modified: 15 Sep 2018 05:08
DOI or Identification number: 10.1007/s10230-018-0511-7
URI: http://researchonline.ljmu.ac.uk/id/eprint/7301

Actions (login required)

View Item View Item