Analytical Chemistry

Study Leave Grant

The purpose of the Study Leave Grant scheme is to provide the opportunity for Analytical Scientists who are employed in university, industrial or public service sectors in the United Kingdom (UK) or Republic of Ireland (RoI) to visit a Host Institute in the UK/RoI to acquire new analytical science knowledge, or experience of analytical science teaching, learning or training methods, which would be applied on return to normal employment.The grant would contribute towards travel to and from the host institute, accommodation and subsistence during the visit​, but will not cover the salary of t

Pharmaceuticals and personal care products in sediments in Africa: Status, ecological risks, extraction and analytical techniques

This review synthesized literature (2012–2024) about the occurrence of pharmaceuticals and personal care products (PPCPs) in sediments from waterbodies in Africa while highlighting the sources and analytical techniques used. A total of 35 PPCP classes constituting 142 compounds were identified. Eastern Africa reported 21 classes with 60 compounds, Western Africa 17 classes with 69 compounds, Southern Africa 18 classes with 19 compounds, and Northern Africa 1 class with 19 compounds. Publications were scarce in Central and Northern Africa, with most studies reported in Western Africa.

Applications of Lewis Acidic [ZnCl2]2[ChCl] Deep Eutectic Solvents (DES) in the Synthesis of Unsymmetrical Ethers via Dehydrative Cross Etherification of Alcohols

Unsymmetrical ethers are generally synthesized via the Williamson ether method, but the unwanted formation of symmetrical ethers plus the basic and harsh conditions of the route pose a synthetic challenge. Other methods employed in the synthesis of unsymmetrical ether require the use of toxic mineral acids, and requires high catalyst loading which limits their large-scale application. Dehydration of alcohols in the presence of base-metal catalyst has, however, recently offered the greenest approach to synthesize unsymmetrical ethers, leaving water as by-product.

An Assessment of Per-and Polyfluoroalkly Substances in the Food Packaging of Local Manufacturers and Retailers of International Products in Trinidad and Tobago

             Per- and polyfluoroalkyl substances (PFAS) are a diverse group of synthetic compounds widely used for their dual hydrophobic and lipophobic properties. They comprise more than 4700 CAS-registered compounds according to the OECD and have been used intentionally in nonstick, grease-and waterproof, and stain-resistant consumer products, particularly food packaging materials. PFAS are inherently persistent, and many are mobile, bio-accumulative, and toxicity to a wide array of organisms, making them emerging contaminants of concern.

A Comprehensive Analytical Approach and Potential Solutions in Understanding Microbial Transformation of Legacy PFAS in Wastewater

Significant increases in the presence of organofluorine compounds, especially per- and polyfluoroalkyl substances (PFAS), have been reported in the various environmental compartments.  Many of these compounds, including their precursors and metabolites, remain challenging to detect and quantify using current analytical methods.  PFAS have the potential to undergo metabolic transformation processes under biotic conditions in the presence of suitable microbial communities and under varying environmental conditions, each with its unique metabolic pathways.  Yet microbial degrada

Systematic Study on the Design of Supramolecular Deep Eutectic Solvents (SUPRADES) for the Extraction of Bioactive Compounds

his research focuses on the design and optimization of supramolecular deep eutectic solvents (SUPRADES) for the extraction of bioactive compounds and the exploration of potential applications. SUPRADES represent a novel subclass of deep eutectic solvents (DES) that could have a significant impact on green chemistry due to their enhanced inclusion properties, offering a promising alternative to conventional solvents. They may provide higher selectivity and efficiency in extracting different families of compounds.