Dr Kevin Honeychurch's Outputs (71)

An anodic stripping voltammetric approach for total mercury determination in sea sponges from the Niger Delta region of Nigeria (2024)
Journal Article

Mercury pollution from ongoing crude oil refining and waste disposal activities threatens aquatic ecosystems and human health in the Niger Delta. Mercury monitoring exercise in this region is challenging due to the high cost of traditional instrument... Read More about An anodic stripping voltammetric approach for total mercury determination in sea sponges from the Niger Delta region of Nigeria.

Cyclic voltammetric behaviour and high-performance liquid chromatography amperometric determination of levamisole (2024)
Journal Article

The electrochemical oxidation of levamisole, a glassy carbon electrode, was investigated over the pH range 2.0–10.0. Cyclic voltammetric investigations showed a single oxidation process was recorded, with a peak potential (Ep) shown to be pH-dependen... Read More about Cyclic voltammetric behaviour and high-performance liquid chromatography amperometric determination of levamisole.

Under-researched and under-reported new findings in microplastic field (2024)
Journal Article

After over 20 years of research on microplastic (MP) pollution, there are important areas of study which are still at the inception. In particular, between 2020 and 2023 new findings on MP have emerged, which open new sub-categories of MP research. T... Read More about Under-researched and under-reported new findings in microplastic field.

Development of an on-column trace enrichment method for the determination of sub-μg/L bisphenol A in bottled water by RP-HPLC with fluorescent detection (2024)
Journal Article

A simple extraction-free, on-column trace enrichment liquid chromatographic method for the determination of trace levels of bisphenol A (BPA) in bottled water samples has been developed. It was found possible to determine ng/L (ppt) levels of BPA by... Read More about Development of an on-column trace enrichment method for the determination of sub-μg/L bisphenol A in bottled water by RP-HPLC with fluorescent detection.

Digital image colorimetry smartphone determination of acetaminophen (2023)
Journal Article

Acetaminophen can be determined colorimetrically via its reduction of ferricyanide to give ferrocyanide. The ferrocyanide formed can then be converted to the highly colored compound, Prussian Blue, via the addition of iron(III). Quantification is com... Read More about Digital image colorimetry smartphone determination of acetaminophen.

New applications of gas chromatography and gas chromatography-mass spectrometry for novel sample matrices in the forensic sciences: A literature review (2023)
Journal Article

The investigation of novel sample matrices in the forensic sciences offers several possible advantages, such as allowing for results to be obtained in cases where common sample types are absent. This review focuses on the application of gas chromatog... Read More about New applications of gas chromatography and gas chromatography-mass spectrometry for novel sample matrices in the forensic sciences: A literature review.

Determination of licit and illicit drugs and metabolites in human sweat by liquid chromatography-tandem mass spectrometry (2023)
Journal Article

A liquid chromatography-tandem mass spectrometry screening method in sweat was developed for the simultaneous determination of three licit drugs (nicotine, paracetamol, and caffeine); four illicit drugs (cocaine, ketamine, 25I-NBOMe and methamphetami... Read More about Determination of licit and illicit drugs and metabolites in human sweat by liquid chromatography-tandem mass spectrometry.

Graphene-based electrodes for monitoring of Estradiol (2023)
Journal Article

This study explores the potential use of graphene-based electrodes in the electrochemical determination of estradiol using amperometric techniques as a simple, enzyme-free approach. Graphene, a carbon-based nanomaterial, has been extensively investig... Read More about Graphene-based electrodes for monitoring of Estradiol.

An electrochemical screen-printed sensor based on gold-nanoparticle-decorated reduced graphene oxide–carbon nanotubes composites for the determination of 17-β estradiol (2023)
Journal Article

In this study, a screen-printed electrode (SPE) modified with gold-nanoparticle-decorated reduced graphene oxide–carbon nanotubes (rGO-AuNPs/CNT/SPE) was used for the determination of estradiol (E2). The AuNPs were produced through an eco-friendly me... Read More about An electrochemical screen-printed sensor based on gold-nanoparticle-decorated reduced graphene oxide–carbon nanotubes composites for the determination of 17-β estradiol.

Nanosensor applications in plant science (2022)
Journal Article

Plant science is a major research topic addressing some of the most important global challenges we face today, including energy and food security. Plant science has a role in the production of staple foods and materials, as well as roles in genetics... Read More about Nanosensor applications in plant science.

Voltammetric behaviour of Rhodamine B at a screen-printed Carbon electrode and its trace determination in environmental water samples (2022)
Journal Article

The voltammetric behaviour of Rhodamine B was studied at a screen‐printed carbon electrode (SPCE), by cyclic and differential pulse voltammetry. Cyclic voltammograms exhibited two reduction peaks (designated R1 and R2) generated from the reduction of... Read More about Voltammetric behaviour of Rhodamine B at a screen-printed Carbon electrode and its trace determination in environmental water samples.

Sensors for environmental monitoring and food safety (2022)
Journal Article

The aim of this Special Issue of the journal , "Sensors for Environmental Monitoring and Food Safety", was to report on the developments and advances in sensors and biosensors to meet the needs of environmental and food analysis [...].

Smartphone-based colorimetric determination of gamma-butyrolactone and gamma-hydroxybutyrate in alcoholic beverage samples (2022)
Journal Article

Gamma-hydroxybutyrate (GBH) is a popular recreational drug. Its strong sedative and amnesic effects have led to drug-facilitated sexual assaults, poisonings, overdose, and death. As a result, legislation has restricted its availability leading to GHB... Read More about Smartphone-based colorimetric determination of gamma-butyrolactone and gamma-hydroxybutyrate in alcoholic beverage samples.

Determination of psychoactive drugs in air (2022)
Journal Article

Understanding of the levels of psychoactive drugs in air is important for assessing both occupational and environmental exposure. Intelligence on the usage and manufacture of illegal drugs can also be gained. Environmental analysis and determination... Read More about Determination of psychoactive drugs in air.

Analytical approaches and trends in the determination of psychoactive drugs in air (2022)
Journal Article

Understanding of the levels of psychoactive drugs in air is important for assessing both occupational and environmental exposure. Intelligence on the usage and manufacture of illegal drugs can also be gained. Environmental analysis and determination... Read More about Analytical approaches and trends in the determination of psychoactive drugs in air.

Carbon nanotube (CNT)-based biosensors (2021)
Journal Article

This review focuses on recent advances in the application of carbon nanotubes (CNTs) for the development of sensors and biosensors. The paper discusses various configurations of these devices, including their integration in analytical devices. Carbon... Read More about Carbon nanotube (CNT)-based biosensors.

Forensic electrochemical presumptive blood test based on the voltammetric behaviour of methylene blue and whole blood (2021)
Journal Article

The ability to identify the presence of blood residues is important in a number of fields, such as in the forensic and archaeological sciences. A number of tests presently exist; however, these suffer drawbacks, such as difficulties with the interpre... Read More about Forensic electrochemical presumptive blood test based on the voltammetric behaviour of methylene blue and whole blood.

Recent progress in screen-printed electrochemical sensors and biosensors for the detection of estrogens (2021)
Journal Article

Estrogens have become increasingly prevalent in environmental samples across the world, posing a serious threat to human health. They have received considerable public attention due to their harmful effect on the normal endocrine functions of humans... Read More about Recent progress in screen-printed electrochemical sensors and biosensors for the detection of estrogens.

Illicit drug contamination of the Bristol Pound local currency (2020)
Journal Article

Reports have shown the prevalence of the contamination of banknotes with a number of different drugs. These studies have focused on investigating drug contamination levels on currency which is either nationally or even international distributed. To p... Read More about Illicit drug contamination of the Bristol Pound local currency.

Extraction-free, direct determination of caffeine in microliter volumes of beverages by thermal desorption-gas chromatography mass spectrometry (2020)
Journal Article

An extraction-free method requiring microliter (μL) volumes has been developed for the determination of caffeine in beverages.
Using a pyrolysis-gas chromatography mass spectrometry system, the conditions required for the direct thermal desorption-g... Read More about Extraction-free, direct determination of caffeine in microliter volumes of beverages by thermal desorption-gas chromatography mass spectrometry.