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Zhang Y, Li J, Jiao S, Li Y, Zhou Y, Zhang X, Maryam B, Liu X. Microfluidic sensors for the detection of emerging contaminants in water: A review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 929:172734. [PMID: 38663621 DOI: 10.1016/j.scitotenv.2024.172734] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Revised: 03/22/2024] [Accepted: 04/22/2024] [Indexed: 04/29/2024]
Abstract
In recent years, numerous emerging contaminants have been identified in surface water, groundwater, and drinking water. Developing novel sensing methods for detecting diverse emerging pollutants in water is urgently needed, as even at low concentrations, these pollutants can pose a serious threat to human health and environmental safety. Traditional testing methods are based on laboratory equipment, which is highly sensitive but complex to operate, costly, and not suitable for on-site monitoring. Microfluidic sensors offer several benefits, including rapid evaluation, minimal sample usage, accurate liquid manipulation, compact size, automation, and in-situ detection capabilities. They provide promising and efficient analytical tools for high-performance sensing platforms in monitoring emerging contaminants in water. In this paper, recent research advances in microfluidic sensors for the detection of emerging contaminants in water are reviewed. Initially, a concise overview is provided about the various substrate materials, corresponding microfabrication techniques, different driving forces, and commonly used detection techniques for microfluidic devices. Subsequently, a comprehensive analysis is conducted on microfluidic detection methods for endocrine-disrupting chemicals, pharmaceuticals and personal care products, microplastics, and perfluorinated compounds. Finally, the prospects and future challenges of microfluidic sensors in this field are discussed.
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Affiliation(s)
- Yihao Zhang
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300354, China
| | - Jiaxuan Li
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300354, China
| | - Shipu Jiao
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300354, China
| | - Yang Li
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300354, China
| | - Yu Zhou
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300354, China
| | - Xu Zhang
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300354, China
| | - Bushra Maryam
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300354, China
| | - Xianhua Liu
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300354, China.
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Khachornsakkul K, Leelasattarathkul T. Photothermal biosensing integrated with microfluidic paper-based analytical device for sensitive quantification of sarcosine. Talanta 2024; 271:125628. [PMID: 38219320 DOI: 10.1016/j.talanta.2024.125628] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Revised: 11/13/2023] [Accepted: 01/04/2024] [Indexed: 01/16/2024]
Abstract
This article presents the development of a photothermal biosensing integrated with microfluidic paper-based analytical device (PT-μPAD) as a quantitative biosensor method for monitoring sarcosine in human control urine, plasma, and serum samples. The device utilizes gold nanoparticles (AuNPs) as both a peroxidase-like nanozyme and a photothermal substrate to enable sarcosine detection. In our PT-μPAD, hydrogen peroxide (H2O2) is generated through the oxidation of sarcosine by a sarcosine oxidase (SOx) enzyme. Subsequently, the H2O2 flows through the paper microchannels to the detection zone, where it etches the pre-deposited AuNPs, inducing a temperature change upon exposure by a 532 nm laser. The temperature variation is then measured using a portable and inexpensive infrared thermometer. Under optimized conditions, we obtained a linear range between 10.0 and 40.0 nmol L-1 (R2 = 0.9954) and a detection limit (LOD) of 32.0 pmol L-1. These values fall within the clinical range for sarcosine monitoring in prostate cancer diagnostics in humans. Moreover, our approach exhibits high selectivity without interfering effects. Recovery studies in various human control samples demonstrated a range of 99.05-102.11 % with the highest RSD of 2.25 %. The PT-μPAD was further validated for sarcosine determination in human control urine and compared with a commercial ELISA assay, revealing no significant difference between these two methods at a 95 % confidence level. Overall, our proposed sarcosine biosensor is well-suited for prostate cancer monitoring, given its affordability, sensitivity, and user-friendliness, even for unskilled individuals. Moreover, this strategy has promising prospects for broader applications, potentially detecting various biomarkers as a point-of-care (POC) diagnostic tool.
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Affiliation(s)
- Kawin Khachornsakkul
- Division of Chemistry, Department of Science, Faculty of Science and Technology, Rajamangala University of Technology Krungthep, Bangkok, 10120, Thailand; Department of Electrical and Computer Engineering, Tufts University, Medford, MA, 02155, USA
| | - Tapparath Leelasattarathkul
- Division of Chemistry, Department of Science, Faculty of Science and Technology, Rajamangala University of Technology Krungthep, Bangkok, 10120, Thailand.
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Yang D, Hu C, Zhang H, Geng S. Recent Developments in Paper-Based Sensors with Instrument-Free Signal Readout Technologies (2020-2023). BIOSENSORS 2024; 14:36. [PMID: 38248413 PMCID: PMC10812998 DOI: 10.3390/bios14010036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Revised: 12/31/2023] [Accepted: 01/09/2024] [Indexed: 01/23/2024]
Abstract
Signal readout technologies that do not require any instrument are essential for improving the convenience and availability of paper-based sensors. Thanks to the remarkable progress in material science and nanotechnology, paper-based sensors with instrument-free signal readout have been developed for multiple purposes, such as biomedical detection, environmental pollutant tracking, and food analysis. In this review, the developments in instrument-free signal readout technologies for paper-based sensors from 2020 to 2023 are summarized. The instrument-free signal readout technologies, such as distance-based signal readout technology, counting-based signal readout technology, text-based signal readout technology, as well as other transduction technologies, are briefly introduced, respectively. On the other hand, the applications of paper-based sensors with instrument-free signal readout technologies are summarized, including biomedical analysis, environmental analysis, food analysis, and other applications. Finally, the potential and difficulties associated with the advancement of paper-based sensors without instruments are discussed.
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Affiliation(s)
- Danni Yang
- Chongqing Engineering Research Center of Pharmaceutical Sciences, Chongqing Medical and Pharmaceutical College, Chongqing 401331, China;
| | - Chengju Hu
- Health Management Center, The Affiliated Dazu Hospital of Chongqing Medical University, Chongqing 402360, China;
| | - Hao Zhang
- Chongqing Engineering Research Center of Pharmaceutical Sciences, Chongqing Medical and Pharmaceutical College, Chongqing 401331, China;
| | - Shan Geng
- Department of Endocrinology, The Affiliated Dazu Hospital of Chongqing Medical University, Chongqing 402360, China
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Khachornsakkul K, Del-Rio-Ruiz R, Creasey H, Widmer G, Sonkusale SR. Gold Nanomaterial-Based Microfluidic Paper Analytical Device for Simultaneous Quantification of Gram-Negative Bacteria and Nitrite Ions in Water Samples. ACS Sens 2023; 8:4364-4373. [PMID: 37997658 DOI: 10.1021/acssensors.3c01769] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2023]
Abstract
This study presents a rapid microfluidic paper-based analytical device (μPAD) capable of simultaneously monitoring Gram-negative bacteria and nitrite ions (NO2-) for water quality monitoring. We utilize gold nanoparticles (AuNPs) functionalized with polymyxin molecules (AuNPs@polymyxin) to cause color change due to aggregation for the detection of Gram-negative bacteria, and antiaggregation in the presence of o-phenylenediamine (OPD) for NO2- detection. In this study, Escherichia coli (E. coli) serves as the model of a Gram-negative bacterium. Using the developed μPADs, the color changes resulting from aggregation and antiaggregation reactions are measured using a smartphone application. The linear detection ranges from 5.0 × 102 to 5.0 × 105 CFU/mL (R2 = 0.9961) for E. coli and 0.20 to 2.0 μmol/L (R2 = 0.995) for NO2-. The detection limits were determined as 2.0 × 102 CFU/mL for E. coli and 0.18 μmol/L for NO2-. Notably, the newly developed assay exhibited high selectivity with no interference from Gram-positive bacteria. Additionally, we obtained acceptable recovery for monitoring E. coli and NO2- in drinking water samples with no significant difference between our method and a commercial assay by t test validation. The sensor was also employed for assessing the quality of the pond and environmental water source. Notably, this approach can also be applied to human urine samples with satisfactory accuracy. Furthermore, the assay's stability is extended due to its reliance on AuNPs rather than reagents like antibodies and enzymes, reducing costs and ensuring long-term viability. Our cost-effective μPADs therefore provide a real-time analysis of both contaminants, making them suitable for assessing water quality in resource-limited settings.
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Affiliation(s)
- Kawin Khachornsakkul
- Department of Electrical and Computer Engineering, Tufts University, Medford, Massachusetts 02155, United States
- Nano Lab, Tufts University, Medford, Massachusetts 02155, United States
| | - Ruben Del-Rio-Ruiz
- Department of Electrical and Computer Engineering, Tufts University, Medford, Massachusetts 02155, United States
- Nano Lab, Tufts University, Medford, Massachusetts 02155, United States
| | - Hannah Creasey
- Department of Infectious Diseases and Global Health, Cummings School of Veterinary Medicine, Tufts University, North Grafton, Massachusetts 01536, United States
| | - Giovanni Widmer
- Department of Infectious Diseases and Global Health, Cummings School of Veterinary Medicine, Tufts University, North Grafton, Massachusetts 01536, United States
| | - Sameer R Sonkusale
- Department of Electrical and Computer Engineering, Tufts University, Medford, Massachusetts 02155, United States
- Nano Lab, Tufts University, Medford, Massachusetts 02155, United States
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Khachornsakkul K, Rybicki FJ, Sonkusale S. Nanomaterials integrated with microfluidic paper-based analytical devices for enzyme-free glucose quantification. Talanta 2023; 260:124538. [PMID: 37087948 DOI: 10.1016/j.talanta.2023.124538] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 04/05/2023] [Accepted: 04/07/2023] [Indexed: 04/25/2023]
Abstract
In this study, nanomaterials capable of enzyme-free glucose quantification and colorimetric readout are integrated into a microfluidic paper-based analytical devices (μPADs). Gold nanoparticles (AuNPs) and silver nanoparticles (AgNPs) were utilized as a peroxidase-like nanozyme and a colorimetric probe to achieve glucose monitoring. In this developed device, glucose is oxidized by AuNPs to generate hydrogen peroxide (H2O2), which flows in the paper microchannels toward detection zones. H2O2 then etches the immobilized AgNPs to induce a color change. The intensity of color change is easily monitored using a smartphone application. Following method optimization, we obtained a linear range from 0.50 to 10.0 mmol L-1 (R2 = 0.9921) and a detection limit (LOD) of 340.0 μmol L-1. This falls in the clinically relevant range for glucose monitoring and diabetes diagnosis in humans. In addition, the total analysis time is just 20 min, which is significantly less than the same experiment performed in the solution phase. Also, our method is markedly selective; other substrates do not interfere. The recovery test in human control samples was in the range of 98.47-102.34% and the highest relative standard deviation (RSD) was 3.58%. The enzyme-free approach for glucose sensing is highly desirable for diabetes diagnosis as it replaces the more expensive enzyme with cheaper nanomaterials. Furthermore, since nanomaterials are more environmentally stable compared to enzymes, it has the potential for widespread deployment as point-of-care diagnostics (POC) in resource-limited settings.
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Affiliation(s)
- Kawin Khachornsakkul
- Department of Electrical and Computer Engineering, Tufts University, Medford, MA, 02155, USA; Nano Lab, Tufts University, Medford, MA, 02155, USA.
| | - Frank John Rybicki
- Department of Electrical and Computer Engineering, Tufts University, Medford, MA, 02155, USA; Nano Lab, Tufts University, Medford, MA, 02155, USA
| | - Sameer Sonkusale
- Department of Electrical and Computer Engineering, Tufts University, Medford, MA, 02155, USA; Nano Lab, Tufts University, Medford, MA, 02155, USA.
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Khachornsakkul K, Dungchai W, Pamme N. Distance-Based All-In-One Immunodevice for Point-of-Care Monitoring of Cytokine Interleukin-6. ACS Sens 2022; 7:2410-2419. [PMID: 35972061 DOI: 10.1021/acssensors.2c01122] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
We report the development of a distance-based paper analytical device combined with a hydrophilic bridge valve (B-dPAD) as a quantitative immunoassay method to monitor human interleukin-6 (IL-6) in human samples. Our device design features (i) a circular sample inlet zone, (ii) a circular capture zone with immobilized anti-IL-6 (anti-Ab1), and (iii) a detection zone channel coated with methylene blue (MB). Two hydrophilic valves are positioned between these three zones. IL-6 levels were determined quantitatively by measuring the extent of degradation of MB to a colorless product along the length of the detection zone channel. Following method optimization, we obtained a linear range from 0.05 to 25.0 pg/mL (R2 = 0.9995) and a detection limit (LOD) of 0.05 pg/mL by the naked-eye readout. This is directly within the clinically relevant range. The system does not require any external instrumentation, and the bridge valves can be easily connected and disconnected by a minimally trained operator. The total analysis time is 35 min, significantly reduced from a typical ELISA assay, which takes around 1 h since the B-dPAD workflow circumvents washing steps. The device was tested for IL-6 quantification in human saliva and urine samples of volunteers, with no significant difference found between our method and the standard clinical laboratory method at 95% confidence levels. Recoveries ranged from 98 to 105% with the highest standard deviation at 3.9%. Our B-dPAD immunodevice is therefore a promising approach for rapid IL-6 monitoring in the context of point-of-care diagnostics and analysis in resource-limited settings.
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Affiliation(s)
- Kawin Khachornsakkul
- Department of Chemistry, Faculty of Science, King Mongkut's University of Technology, Prachautid Road, Thungkru, Thonburi, Bangkok 10140, Thailand.,Department/ of Chemistry and Biochemistry, University of Hull, Cottingham Road, Hull HU6 7RX, United Kingdom
| | - Wijitar Dungchai
- Department of Chemistry, Faculty of Science, King Mongkut's University of Technology, Prachautid Road, Thungkru, Thonburi, Bangkok 10140, Thailand
| | - Nicole Pamme
- Department/ of Chemistry and Biochemistry, University of Hull, Cottingham Road, Hull HU6 7RX, United Kingdom.,Department of Materials and Environmental Chemistry, Stockholm University, Svante Arrhenius väg 16C, Stockholm 106 91, Sweden
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