Raman Spectroscopy for In-Line Water Quality  Monitoring—Instrumentation and Potential

Li, Zhi-Yun; Deen, M. Jamal; Kumar, Shiva; Selvaganapathy, P. Ravi

doi:10.3390/s140917275

Cited by 79 publications

(56 citation statements)

References 88 publications

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“…A lower limit of detection is achievable by using the SERS technique in comparison with the standard level of LOD contaminants in water as set by the EPA [342]. Because of the high-intensity signal used in SERS, this technique is among the most useful tools for environmental science, electrochemistry and analytical chemistry/biology applications.…”

Section: Raman In Comparison To Surface-enhanced Raman Spectroscopymentioning

confidence: 99%

Detection of contaminants in water supply: A review on state-of-the-art monitoring technologies and their applications

Zulkifli

Rahim

Lau

2018

Sensors and Actuators B: Chemical

232

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a b s t r a c tWater monitoring technologies are widely used for contaminants detection in wide variety of water ecology applications such as water treatment plant and water distribution system. A tremendous amount of research has been conducted over the past decades to develop robust and efficient techniques of contaminants detection with minimum operating cost and energy. Recent developments in spectroscopic techniques and biosensor approach have improved the detection sensitivities, quantitatively and qualitatively. The availability of in-situ measurements and multiple detection analyses has expanded the water monitoring applications in various advanced techniques including successful establishment in hand-held sensing devices which improves portability in real-time basis for the detection of contaminant, such as microorganisms, pesticides, heavy metal ions, inorganic and organic components. This paper intends to review the developments in water quality monitoring technologies for the detection of biological and chemical contaminants in accordance with instrumental limitations. Particularly, this review focuses on the most recently developed techniques for water contaminant detection applications. Several recommendations and prospective views on the developments in water quality assessments will also be included.

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Section: Raman In Comparison To Surface-enhanced Raman Spectroscopymentioning

confidence: 99%

Detection of contaminants in water supply: A review on state-of-the-art monitoring technologies and their applications

Zulkifli

Rahim

Lau

2018

Sensors and Actuators B: Chemical

232

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“…From the graph, one can notice that the number of publications in which portable Raman instruments are used for SERS detection has been significantly growing in the last 5–10 years. To the best of our knowledge, although a large number of articles and reviews have been published, also in recent years, on food, drugs and medicine, explosives and warfare, environment, and art preservation, no paper has been specifically dedicated to the use of portable instruments for the detection of these analytes. Aim of this review is to fill this gap, focusing on the SERS detection of food contaminants.…”

Section: Introductionmentioning

confidence: 99%

SERS detection of food contaminants by means of portable Raman instruments

Pilot

2018

J Raman Spectroscopy

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Surface‐enhanced Raman scattering (SERS) has been emerging as a powerful tool for the detection of a variety of analytes due to its very high sensitivity and fingerprinting recognition capabilities. Technological progresses in the equipment for Raman analysis are contributing to its transition from a technically demanding research method to a more widely available analytical technique. In particular, the commercialization of portable or handheld instruments has opened up the possibility of performing in situ analysis. In this review, a selection of the SERS substrates that are expected to be more suitable for use in combination with portable instruments is presented: Substrates are compared, for example, in terms of performance, reproducibility, ease of fabrication, and surface area. Moreover, this paper provides a survey of the current diffusion of portable Raman instruments in the SERS detection of food contaminants: The investigation of several analytes is summarized (mainly toxins, virus, bacteria, pesticides, forbidden food dyes, and preservatives), reporting on the limits of detection and on the eventual coupling with concentration or separation techniques. A brief perspective on possible future developments of the SERS detection with portable instruments is also provided.

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“…On the other hand, several optical methods have been employed in order to monitor water quality . A possibility in this context takes advantage on the surface‐enhanced Raman scattering (SERS) effect observed when certain compounds are in the close vicinity or are adsorbed at metal surfaces , . In this context, there has been interest to develop nanostructures that can detect trace levels of certain contaminants.…”

Section: Introductionmentioning

confidence: 99%

Functionalized Inorganic Nanoparticles for Magnetic Separation and SERS Detection of Water Pollutants

et al. 2018

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Inorganic nanoparticles (NPs) have emerged in the last decades as key materials for a number of technologies. In particular, noble metal (Ag, Au) and iron oxide NPs have revealed important applications due to their plasmonic and magnetic properties, respectively. Among these applications, this review provides, on one hand, an overview on the use of colloidal metal NPs in surface enhanced Raman scattering (SERS) chemical analysis and, on the other hand, the application of iron oxides as a new class of nanosorbents for water pollutants. These distinct types of NPs are the main building blocks to produce [a] Raman spectroscopy is a powerful analytical tool for chemical characterization, providing information about molecular structure, surface processes, and interface reactions. [31,32] Raman spectroscopy is based on the inelastic scattering of photons by chemical species and materials (Raman scattering). Among the incident photons that hit the sample only a small portion is inelastically scattered, i.e. comes out at a different frequency from the incident light. The spectral information is based on the detection of these scattered photons that are recorded as energy shifts (Raman shifts) from the wavenumber of the elastic scattered photons (Rayleigh scattering). Each band in the Raman spectrum can be assigned to a vibrational mode (or Paula

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Raman Spectroscopy for In-Line Water Quality Monitoring—Instrumentation and Potential

Cited by 79 publications

References 88 publications

Detection of contaminants in water supply: A review on state-of-the-art monitoring technologies and their applications

Detection of contaminants in water supply: A review on state-of-the-art monitoring technologies and their applications

SERS detection of food contaminants by means of portable Raman instruments

Functionalized Inorganic Nanoparticles for Magnetic Separation and SERS Detection of Water Pollutants

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