Alternative methods of monitoring emerging contaminants in water: a review

Bhuvaneshwari, M.; Nallathambi, Gobi; Devasena, T

doi:10.1039/d2em00237j

Cited by 7 publications

(2 citation statements)

References 150 publications

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“…Besides their potentially carcinogenic effects, ECs, like microplastics, are also seen as vectors and substratum for pathogenic bacteria, particularly in low-concentration groundwater environments (Rochman, 2018;Ma et al, 2020). Thus, detecting ECs in effluents and natural waters is a high priority, although limited to traditional "gold standard" laboratory-based methods using benchtop instruments and techniques (Manivannan et al, 2022). Sgroi et al (2017) analyzed the EEMs of samples from two river systems in Italy to report significant correlations between known fluorescence indexes and EC groups, e.g., humic-like peaks correlating with sucralose, sulfamethoxazole and carbamazepine, and ibuprofen and caffeine correlating with tyrosine-like (Peak B) fluorescent peaks.…”

Section: Detecting Emerging Contaminants Using Spectroscopymentioning

confidence: 99%

In-situ optical water quality monitoring sensors—applications, challenges, and future opportunities

Kumar,

Khamis,

Stevens

et al. 2024

Front. Water

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Water quality issues remain a major cause of global water insecurity, and real-time low-cost monitoring solutions are central to the remediation and management of water pollution. Optical sensors, based on fluorescence, absorbance, scattering and reflectance-based principles, provide effective water quality monitoring (WQM) solutions. However, substantial challenges remain to their wider adoption across scales and environments amid cost and calibration-related concerns. This review discusses the current and future challenges in optical water quality monitoring based on multi-peak fluorescence, full-spectrum absorbance, light-scattering and remotely sensed surface reflectance. We highlight that fluorescence-based sensors can detect relatively low concentrations of aromatic compounds (e.g., proteins and humic acids) and quantify and trace organic pollution (e.g., sewage or industrial effluents). Conversely, absorbance-based sensors (Ultraviolet-Visible-Infra-red, UV-VIS-IR) are suitable for monitoring a wider range of physiochemical variables (e.g., nitrate, dissolved organic carbon and turbidity). Despite being accurate under optimal conditions, measuring fluorescence and absorbance can be demanding in dynamic environments due to ambient temperature and turbidity effects. Scattering-based turbidity sensors provide a detailed understanding of sediment transport and, in conjunction, improve the accuracy of fluorescence and absorbance measurements. Recent advances in micro-sensing components such as mini-spectrometers and light emitting diodes (LEDs), and deep computing provide exciting prospects of in-situ full-spectrum analysis of fluorescence (excitation-emission matrices) and absorbance for improved understanding of interferants to reduce the signal-to-noise ratio, improve detection accuracies of existing pollutants, and enable detection of newer contaminants. We examine the applications combining in-situ spectroscopy and remotely sensed reflectance for scaling Optical WQM in large rivers, lakes and marine bodies to scale from point observations to large water bodies and monitor algal blooms, sediment load, water temperature and oil spills. Lastly, we provide an overview of future applications of optical techniques in detecting emerging contaminants in treated and natural waters. We advocate for greater synergy between industry, academia and public policy for effective pollution control and water management.

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Section: Detecting Emerging Contaminants Using Spectroscopymentioning

confidence: 99%

In-situ optical water quality monitoring sensors—applications, challenges, and future opportunities

Kumar,

Khamis,

Stevens

et al. 2024

Front. Water

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“…9,10 Sensor technology is a promising area of technological development that can revolutionize water quality monitoring by offering affordable, rapid solutions with unprecedented spatiotemporal resolution. 11,12 Sensors utilize chemical or biological molecular receptors that are designed to selectively respond to specific targets. A typical sensor integrates these molecular receptors with transducers (e.g., optical or electrochemical devices), signal processors, and end-user interfaces customized for a wide range of applications (Figure 1).…”

Section: Introduction: Innovations In Sensing Technologies To Improve...mentioning

confidence: 99%

Sensors for Emerging Water Contaminants: Overcoming Roadblocks to Innovation

Ateia,

Wei,

Andreescu

2024

Environ. Sci. Technol.

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Ensuring water quality and safety requires the effective detection of emerging contaminants, which present significant risks to both human health and the environment. Field deployable low-cost sensors provide solutions to detect contaminants at their source and enable large-scale water quality monitoring and management. Unfortunately, the availability and utilization of such sensors remain limited. This Perspective examines current sensing technologies for detecting emerging contaminants and analyzes critical barriers, such as high costs, lack of reliability, difficulties in implementation in real-world settings, and lack of stakeholder involvement in sensor design. These technical and nontechnical barriers severely hinder progression from proof-of-concepts and negatively impact user experience factors such as ease-of-use and actionability using sensing data, ultimately affecting successful translation and widespread adoption of these technologies. We provide examples of specific sensing systems and explore key strategies to address the remaining scientific challenges that must be overcome to translate these technologies into the field such as improving sensitivity, selectivity, robustness, and performance in real-world water environments. Other critical aspects such as tailoring research to meet end-users' requirements, integrating cost considerations and consumer needs into the early prototype design, establishing standardized evaluation and validation protocols, fostering academia-industry collaborations, maximizing data value by establishing data sharing initiatives, and promoting workforce development are also discussed. The Perspective describes a set of guidelines for the development, translation, and implementation of water quality sensors to swiftly and accurately detect, analyze, track, and manage contamination.

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Carbon dots support for preconcentration and analysis of anti-inflammatory drug ibuprofen: an innovative remedy for wastewater treatment

Shafi,

Zafar,

Aitani

et al. 2024

Clean Techn Environ Policy

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Alternative methods of monitoring emerging contaminants in water: a review

Abstract: Anthropogenic activities have steadily increased the release of emerging contaminants (ECs) in aquatic bodies, and these ECs may have adverse effects on humans even at their trace (µg/L) levels. Their...

Cited by 7 publications

References 150 publications

In-situ optical water quality monitoring sensors—applications, challenges, and future opportunities

In-situ optical water quality monitoring sensors—applications, challenges, and future opportunities

Sensors for Emerging Water Contaminants: Overcoming Roadblocks to Innovation

Carbon dots support for preconcentration and analysis of anti-inflammatory drug ibuprofen: an innovative remedy for wastewater treatment

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