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Lab-on-a-Chip Devices for Water Quality Monitoring

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Nanosensor Technologies for Environmental Monitoring

Abstract

Accurate and on-site monitoring of water quality forms an integral part of water remediation systems. Timely detection of contaminants in water and wastewater streams plays a key role in the deployment of suitable water pollution prevention and control strategies. It also provides quality assurance before consumption of water for drinking or other purposes. Conventional techniques of water quality monitoring primarily include the use of sophisticated equipment in centralized laboratories. The constraints of large turnaround time for sample collection-to-analysis, costs, and the need for trained operating personnel limit their widespread usage.

Microfluidics based lab-on-a-chip (LOC) systems offer a promising alternative in this direction for the development of miniaturized and portable water quality monitoring platforms. The chapter provides an overview of lab-on-a-chip technology and the advantages it offers in comparison to conventional methods for water quality analysis. Various types of substrate materials, fabrication techniques for developing lab-on-a-chip devices have been discussed. A summary illustrating the devices developed for the determination of chemical and biological contaminants in water over recent years is presented. The challenges and future directions of development of LOC technology for successful practical implementation are also highlighted.

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Abbreviations

AAS:

Atomic absorbance spectroscopy

BOD:

Biochemical oxygen demand

BPA:

Bisphenol A

COC:

Cyclic olefin copolymer

DFR:

Dry film resist

DNA:

Deoxyribonucleic acid

DOC:

Dissolved oxygen concentration

GC-MS:

Gas chromatography-mass spectrometry

HLF:

Humic-like fluorescence

ICP-OES:

Inductively coupled plasma optical emission spectrometry

LC-MS:

Liquid chromatography–mass spectrometry

LIF:

Laser-induced fluorescence

LOC :

Lab-on-a-chip

PDMS:

Polydimethylsiloxane

PMMA :

Polymethyl methacrylate

PTFE:

Polytetrafluoroethylene

RO:

Reverse osmosis

TLF:

Tryptophan-like fluorescence

μPAD :

Microfluidic paper-based analytical device

μPESI:

Micropillar array electrospray ionization

μ-TAS :

Micro total analytical systems

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Kapoor, A., Balasubramanian, S., Muthamilselvi, P., Vaishampayan, V., Prabhakar, S. (2020). Lab-on-a-Chip Devices for Water Quality Monitoring. In: Inamuddin, Asiri, A. (eds) Nanosensor Technologies for Environmental Monitoring. Nanotechnology in the Life Sciences. Springer, Cham. https://doi.org/10.1007/978-3-030-45116-5_15

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