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An overview of electrochemical biosensors used for COVID-19 detection

Anal. Methods, 2024, 16,2164-2176
DOI: 10.1039/D3AY02042H, Minireview
Tatiana Lima Valerio, Raquel Anastácio, Stella Schuster da Silva, Carolina Camargo de Oliveira, Marcio Vidotti
This short review presents the latest advances in the field of electrochemical biosensors, focusing particularly on impedimetric biosensors for the direct measurement of analytes.
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A new colorimetric aptasensor for paraquat detection based on the designed aptamer with multiple paraquat binding sites in combination with gold nanoparticles

Anal. Methods, 2024, 16,2340-2348
DOI: 10.1039/D4AY00053F, Paper
Pakawat Kongpreecha, Sineenat Siri
Given paraquat's environmental health risks, there is a need for a fast and simple detection method. This study presents a novel colorimetric aptasensor with a tailored aptamer, boosting sensitivity by targeting multiple paraquat binding sites.
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Online quantification of nicotine in e-cigarette aerosols by vacuum ultraviolet photoionization mass spectrometry

Anal. Methods, 2024, Advance Article
DOI: 10.1039/D4AY00279B, Paper
Shaoxin Ye, Zuoying Wen, Kai Xie, Xuejun Gu, Jian Wang, Xiaofeng Tang, Weijun Zhang
A new method for quantifying nicotine in e-cigarette aerosols within a few seconds using a homemade VUV-AMS.
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An immunochromatographic strip sensor for rapid and sensitive detection of candesartan, olmesartan medoxomil, and irbesartan in herbal beverages

Anal. Methods, 2024, 16,2359-2367
DOI: 10.1039/D4AY00151F, Paper
Dingyu Li, Aihong Wu, Liqiang Liu, Hua Kuang, Chuanlai Xu, Xiaoling Wu
Sartans, as a class of antihypertensive drugs, pose a threat to human health when illegally added to herbal beverages.
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A novel electrophoretic assisted hydrophobic microdevice for enhancing blood cell sorting: design and numerical simulation

Anal. Methods, 2024, 16,2368-2377
DOI: 10.1039/D4AY00196F, Paper
Xinkun Chen, Xueye Chen
Microfluidic technology has great advantages in the precise manipulation of micro–nano particles, and the hybrid microfluidic separation technology has attracted much attention due to the advantages of both active and passive separation technology at the same time.
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A highly sensitive and selective fluorescent biosensor for breast cancer derived exosomes using click reaction of azide–CD63 aptamer and alkyne-polymer dots

Anal. Methods, 2024, Advance Article
DOI: 10.1039/D4AY00146J, Paper
Dumei Ma, Yiting Luo, Xiaoya Zhang, Zehu Xie, Yinghua Yan, Chuan-Fan Ding
A fluorescence method based on Cu-triggered click reaction of azide modified CD63 aptamer and alkyne capped Pdots was developed for breast cancer derived exosome detection.
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Analysis of brominide disinfection by-products in aquaculture water using ultra-high-performance liquid chromatography–quadrupole–time-of-flight mass spectrometry

Anal. Methods, 2024, Accepted Manuscript
DOI: 10.1039/D4AY00396A, Paper
Weimin Yang, Yi Zhang, Jilong Huang, Xing Yang, Ning Jiang
Background: Halogenic disinfectants have been shown to produce toxic and carcinogenic disinfection by-products (DBPs) during water disinfection. Dibromohydantoin (DBDMH) is a commonly used water disinfectant in aquaculture. Aquaculture water has...
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Detection of Free DNA Based on Metal-Enhanced Fluorescence Triggered by CRISPR-Cas12a and Colorimetric Analysis

Anal. Methods, 2024, Accepted Manuscript
DOI: 10.1039/D4AY00149D, Paper
Ming-Qiu Zheng, Yuyao Li, Liling Zhang, Cheng-Yu Li, Menghan Liu, Hongwu Tang
The CRISPR-Cas system has been found to be extremely sensitive and there is an urgent demand to extend its potential in bioassay. Herein, we developed a novel nanobiosensor to detect...
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A simple and rapid colorimetric detection of Staphylococcus Aureus relied on the distance-dependent optical properties of silver nanoparticles

Anal. Methods, 2024, Accepted Manuscript
DOI: 10.1039/D3AY02189K, Paper
Ngoc Anh Thu Phan, Hoang Men Nguyen, Cam Duyen Thi Vo, Toi Vo Van, Phuoc Long Truong
The quick and accurate diagnosis of pathogens has appeared as a pressing issue in clinical diagnostics, environmental monitoring, and food safety. The current assays are suffering from limited capacities in...
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Paper-based sensors: affordable, versatile, and emerging analyte detection platforms

Anal. Methods, 2024, Advance Article
DOI: 10.1039/D3AY02258G, Critical Review
Open Access
Sumit Malik, Joginder Singh, Kajal Saini, Vivek Chaudhary, Ahmad Umar, Ahmed A. Ibrahim, Sheikh Akbar, Sotirios Baskoutas
The schematic representation of distance based paper sensor to identify lead in food samples.
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Electroanalysis overview: additive manufactured biosensors using fused filament fabrication

Anal. Methods, 2024, Advance Article
DOI: 10.1039/D4AY00278D, Minireview
Open Access
  This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.
Robert D. Crapnell, Craig E. Banks
Additive manufacturing (3D-printing), in particular fused filament fabrication, presents a paradigm shift in the way electrochemical based biosensing platforms are produced, giving rise to a new generation of personalized and on-demand biosensors.
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Quantifying platinum binding on protein-functionalized magnetic microparticles using single particle-ICP-TOF-MS

Anal. Methods, 2024, Advance Article
DOI: 10.1039/D4AY00268G, Paper
Open Access
  This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.
Veronica C. Bradley, Benjamin T. Manard, Lyndsey Hendriks, Daniel R. Dunlap, Amber N. Bible, Ada Sedova, Patricia Saint-Vincent, Brian C. Sanders, Hunter B. Andrews
This work describes an analytical procedure, single particle-inductively coupled plasma-time-of-flight-mass spectrometry (SP-ICP-TOF-MS), that was developed to determine the platinum binding efficiency of protein-coated magnetic microparticles.
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Polymeric membrane potentiometric sensors based on template-removal-free imprinted receptors for determination of antibiotics

Anal. Methods, 2024, Accepted Manuscript
DOI: 10.1039/D4AY00263F, Paper
Xinyao Wang, Guohua Cui, Rongning Liang, Wei Qin
Currently, Nernstian-response-based polymeric membrane potentiometric sensors using the molecularly imprinted polymers (MIPs) as the receptors have been successfully developed for determination of organic ionic species. However, the preparation of these...
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Proximity hybridization based “turn-on” DNA tweezer for accurate and enzyme-free small extracellular vesicles analysis

Anal. Methods, 2024, Accepted Manuscript
DOI: 10.1039/D4AY00487F, Paper
Jinlin Wu, Xi Mei, Xiaoqin Zhan, Fang Liu, Dongfang Liu
Small extracellular vesicles (sEVs) are a type of extracellular vesicles that carry many types of molecular information. The identification of sEVs is essential for the non-invasive detection and treatment of...
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Design and fabrication of La-based perovskites incorporated with functionalized carbon nanofibers for the electrochemical detection of roxarsone in water and food samples

Anal. Methods, 2024, Advance Article
DOI: 10.1039/D4AY00264D, Paper
Mariya Antony John Felix, Santhiyagu Sahayaraj Rex Shanlee, Shen-Ming Chen, Sundaresan Ruspika, Ramachandran Balaji, Narendhar Chandrasekar, Periyanayagam Arockia Doss
Fabrication of potent electrocatalyst, La-based perovskites coupled with functionalized carbon nanofibers (LMO/f-CNF) for ultrasensitive electrochemical detection of roxarsone in edible and water samples.
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The preparation of a boronate affinity-based controlled oriented imprinting coating on a silica nanoparticle surface for the separation and purification of shikimic acid in herbal medicine

Anal. Methods, 2024, Advance Article
DOI: 10.1039/D4AY00219A, Paper
Yumin Yang, Daojin Li, Bingqian Liu
Shikimic acid (SA) is one of the most effective drugs against the A (H1N1) virus and has high medicinal value.
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Α simplified lateral flow immunosensor for the assay of carcinoembryonic antigen in low-resource settings

Anal. Methods, 2024, Accepted Manuscript
DOI: 10.1039/D4AY00381K, Paper
Open Access
Ioanna Tsogka, Electra Mermiga, Varvara Pagkali, Christos Kokkinos, Anastasios Economou
Carcinoembryonic antigen (CEA) is a glycoprotein widely used as a tumor marker. In this work, a colorimetric lateral flow immunosensor is developed for rapid and low-cost quantification of CEA in...
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A chemodosimetric chemosensor for the ratiometric detection of nerve agent-mimic DCP in solution and vapor phases

Anal. Methods, 2024, Advance Article
DOI: 10.1039/D4AY00451E, Paper
Shilpita Banerjee, Pintu Ghosh, Anirban Karak, Dipanjan Banik, Ajit Kumar Mahapatra
The probe MNFZ undergoes a hydrolysis reaction in the presence of DCP to exhibit a naked eye color change from blue to cyan. It was successfully applied to sense DCP in the vapor phase.
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Novel advanced materials and magnetic solid phase extraction as approaches in sample preparation to enhance the analysis of ochratoxin A in peanuts

Anal. Methods, 2024, Advance Article
DOI: 10.1039/D4AY00246F, Paper
Bingchen Wang, Yifan Wang, Xiuyuan Zhang, Kuo He
In order to improve the detection efficiency of ochratoxin, a superparamagnetic nano-material was synthesized for solid phase extraction of ochratoxin.
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Three-dimensional hotspot structures constructed from nanoporous gold with a V-cavity and gold nanoparticles for surface-enhanced Raman scattering

Anal. Methods, 2024, Advance Article
DOI: 10.1039/D4AY00348A, Paper
Yang Xu, Yan Wu, Jianjun Wei, Yuanyu Zhao, Peili Xue
A nanoporous gold V-shaped resonant cavity (NPGVRC) structure constructed with plasmonic resonance coupling effect. The NPGVRC has excellent SERS performance and 3D hotspot properties.
To cite this article before page numbers are assigned, use the DOI form of citation above.
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A highly selective probe engineered to detect polarity and distinguish normal cells and tumor cells in tissue sections

Anal. Methods, 2024, Advance Article
DOI: 10.1039/D4AY00438H, Paper
Sai Zhu, Lixuan Dai, Xiaoli Zhong, Weiying Lin
We have designed a polarity fluorescent probe (DCI-Cou-polar) with high selectivity for diagnosing cancer.
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Monolith stationary phases prepared via cyclic anhydride ring-opening polymerization as tunable platforms for chromatographic applications

Anal. Methods, 2024, Accepted Manuscript
DOI: 10.1039/D4AY00251B, Paper
Ahmad Aqel, Ayman Ghafr, A. Yacine Badjah-Hadj-Ahmed, Zeid Abdullah ALOthman
Polymer monolithic stationary phases were prepared based on a cyclic anhydride as a reactive and tunable platform via ring-opening post-polymerization using primary amines; octadecylamine and benzylamine. The characterization techniques indicated...
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A colorimetric tandem combination of CRISPR/Cas12a with dual functional hybridization chain reaction for ultra-sensitive detection of mycobacterium bovis

Anal. Methods, 2024, Accepted Manuscript
DOI: 10.1039/D3AY02200E, Paper
Qiong Liu, Mei Yang, He Zhang, Wenjie Ma, Xin Fu, Huiqing Li, Sainan Gao
Tuberculosis caused by Mycobacterium bovis poses a global infectious threat to humans and animals. Therefore, there is an urgent need to develop a sensitive, precise, and easy-to-readout strategy. Here, a...
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Solutions and Tools for Dealing with Broken Links in Web Pages

A couple of months ago a post by Leo Blanchette got to the front page of Hacker News and there was an interesting discussion on dealing with broken links and external content – the main problem being links that become out of date due to paywalls, altered content, or content getting taken down.

I’ve been running this blog since May 2008. If you’ve run a content-driven site for even a fraction of that, you know that link rot is a problem. In this post I’ll go over some of the suggestions in that thread along with some tools to use to check for broken links.

The post Solutions and Tools for Dealing with Broken Links in Web Pages appeared first on Impressive Webs.



  • HTML5
  • Web Design Articles

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Detecting Specific Text Input with HTML and CSS

Recently I came across a CodePen demo by a developer/engineer named Jane that was Tweeted out by Šime Vidas. The demo has a neat collection of HTML and CSS tricks rolled into one that I thought was worth examining in detail.

The page displays a secret message based on specific text input. Ok, that’s no big deal, right? Well this is done using pure HTML and CSS – no JavaScript. I’ve seen stuff like this before, but I thought it would be cool to break down exactly how this works. There are a few notable things happening in the code so I’ll break down each of the parts.

The post Detecting Specific Text Input with HTML and CSS appeared first on Impressive Webs.




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How to Disable JavaScript in Almost Any Browser

In 2022 I think it’s still important as a web developer to test your how your websites look and function when users disable JavaScript in their browser. Developing in this way used to be a cornerstone of Progressive Enhancement and can be handy on both desktop or mobile.

I still find myself wanting disabling JavaScript on pages I visit. Sometimes it’s to test a page I’m working on, but in other instances it’s simply to visit a web page that’s not functioning correctly and I want to see if JavaScript is the culprit.

The post How to Disable JavaScript in Almost Any Browser appeared first on Impressive Webs.




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Filestack: A File Uploader and Powerful APIs to Deliver and Transform App Content

[Sponsored] If you’re building an app that requires a lot of user-generated content and media that needs to be processed, tagged, filtered, or otherwise manipulated in real-time, you definitely want a solution that’s fast and seamless and doesn’t get in the way of your app’s primary functionality. Filestack is a service you’ll want to consider. Here’s what Filestack offers:

The post Filestack: A File Uploader and Powerful APIs to Deliver and Transform App Content appeared first on Impressive Webs.




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A better Twitter app for Android, at last




an

How mobile data can help rationalise bus routes




an

NPR and Aadhaar - a confused process




an

The transformation of BSNL




an

BSNL customer service changing for the better




an

Good, but not enough: On the extended coverage of the Ayushman Bharat scheme

Extension of free health coverage to all over 70 years is good, but more needs to be done  




an

​Last mile woes: On inflation data and the challenges

Inflation should not be allowed to undermine the economic momentum 




an

​Unrealistic expectations: On India and Russia-Ukraine peace

India’s efforts at peacemaking between Russia and Ukraine have limited potential




an

​For a fair probe: On the Kejriwal bail order and CBI conduct

Kejriwal bail order is a reminder to CBI to dispel perception of bias




an

Clarity of vision: On eye drops for presbyopia and ‘claims’

A useful drug is undone by fantastic claims about its efficacy




an

Third front: On the expanding nature of the conflict in West Asia

Israel’s fighting three enemy militias at once highlights the pressing need for a ceasefire




an

A way out: On the government and doctor-led protests in West Bengal

The West Bengal government must enable the changes doctors want to see




an

Wrong notion: On simultaneous elections

The idea of simultaneous elections is inherently anti-federal




an

 Milestones and U-turns: On the government in its third term

The optics of the 100-day mark cannot conceal changed dynamics for the BJP




an

Staunch the breach: On India, Pakistan and the Indus Waters Treaty

India and Pakistan need to drop their hard line stances on the Indus Waters Treaty




an

Sri Lanka’s verdict: On the Island nation’s ninth Presidential election

The spirit of the mandate of the presidential poll was clear — for change




an

Unwarranted curbs: On the Centre’s move on a ‘fact-checking unit’

Fact-checking cannot be an excuse to impose censorship




an

Politicising the laddu: On the Tirupati laddu and its ‘adulteration’

The Tirupati laddu issue should be limited to one of quality control




an

It is an offence: On Supreme Court clarification on online content on child sex abuse

Court has done well to clarify law on online content showing child sex abuse




an

Visit wrap-up: On PM Modi’s U.S. visit, announcements

The Modi U.S. visit announcements will see New Delhi being put to the test




an

​Judge and prejudice: On conduct in judicial proceedings

Judicial officers must be mindful of language that reveal bias




an

Staying the course: On the fight against air pollution in the Indo-Gangetic plains

The Centre and the States need to fight air pollution together 




an

​Delay and bail: On former Tamil Nadu Minister V. Senthilbalaji’s case

Senthilbalaji’s release on bail was overdue, but he should not be made a Minister