Clean-up
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Biological remediation of acid mine drainage: Review of past trends and current outlook Open
Formation of acid mine drainage (AMD) is a widespread environmental issue that has not subsided throughout decades of continuing research. Highly acidic and highly concentrated metallic streams are characteristics of such streams. Humans, …
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A review of recent developments and trendsin the QuEChERS sample preparation approach Open
A comprehensive review is presented on the recent developments and trends in the QuEChERS (quick, easy, cheap, effective, rugged, and safe) sample preparation approach. This technique involves liquid-liquid partitioning using acetonitrile …
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Dispersive Solid Phase Extraction for the Analysis of Veterinary Drugs Applied to Food Samples: A Review Open
To achieve analytical success, it is necessary to develop thorough clean-up procedures to extract analytes from the matrix. Dispersive solid phase extraction (DSPE) has been used as a pretreatment technique for the analysis of several comp…
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Analytical methodologies for the determination of pharmaceuticals and personal care products (PPCPs) in sewage sludge: A critical review Open
Several analytical approaches have been developed for the determination of emerging pollutants (EPs), including pharmaceuticals and personal care products (PPCPs) in environmental matrices. This paper reviews the sample preparation and ins…
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Detection Methods for Aflatoxin M1 in Dairy Products Open
Mycotoxins are toxic compounds produced mainly by fungi of the genera Aspergillus, Fusarium and Penicillium. In the food chain, the original mycotoxin may be transformed in other toxic compounds, reaching the consumer. A good example is th…
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Simultaneous determination of aflatoxins B1, B2, G1 and G2 in commercial rices using immunoaffinity column clean-up and HPLC-MS/MS Open
Rice is frequently contaminated with aflatoxins, that are highly toxic fungal substances and strongly involved on hepatic cancer. In this work, different extraction and clean-up methods were evaluated for the simultaneous extraction and cl…
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The Human Right to a Clean, Healthy and Sustainable Environment Open
human right to enjoy a clean, healthy, and sustainable environment, and a corresponding duty of care for the State to provide such an environment to the individual.In addition, various non-state entities, including oil companies, car manuf…
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Comprehensive Strategy for Sample Preparation for the Analysis of Food Contaminants and Residues by GC–MS/MS: A Review of Recent Research Trends Open
Food safety and quality have been gaining increasing attention in recent years. Gas chromatography coupled to tandem mass spectrometry (GC–MS/MS), a highly sensitive technique, is gradually being preferred to GC–MS in food safety laborator…
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New Advanced Materials and Sorbent-Based Microextraction Techniques as Strategies in Sample Preparation to Improve the Determination of Natural Toxins in Food Samples Open
Natural toxins are chemical substances that are not toxic to the organisms that produce them, but which can be a potential risk to human health when ingested through food. Thus, it is of high interest to develop advanced analytical methodo…
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Sustainable Food Systems: The Case of Functional Compounds towards the Development of Clean Label Food Products Open
The addition of natural components with functional properties in novel food formulations confers one of the main challenges that the modern food industry is called to face. New EU directives and the global turn to circular economy models a…
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New-Generation Washing Agents in Remediation of Metal-Polluted Soils and Methods for Washing Effluent Treatment: A Review Open
Soil quality is seriously reduced due to chemical pollution, including heavy metal (HM) pollution. To meet quality standards, polluted soils must be remediated. Soil washing/soil flushing offers efficient removal of heavy metals and decrea…
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Fast, efficient and clean adsorption of bisphenol-A using renewable mesoporous silica nanoparticles from sugarcane waste ash Open
Utilization of renewable mesoporous silica nanoparticles, from sugarcane ash, as an adsorbent for removal of an endocrine disruptive compound, bisphenol-A.
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Identification and quantification of multi-class veterinary drugs and their metabolites in beef using LC–MS/MS Open
The practice of abusing antibiotics to improve livestock growth poses a threat to food safety. To prevent and regulate this, accurate monitoring of residual veterinary drugs (VDs) is required. A method based on QuEChERS with dispersive sol…
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Polycyclic Aromatic Hydrocarbons (PAHs) Sample Preparation and Analysis in Beverages: A Review Open
The monitoring of food contaminants is of interests to both food regulatory bodies and the consumers. This literature review covers polycyclic aromatic hydrocarbons (PAHs) with regard to their background, sources of exposures, and occurren…
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Determination of pesticide residues in honey: a preliminary study from two of Africa’s largest honey producers Open
The presence of pollutants in honey can influence honey bee colony performance and devalue its use for human consumption. Using liquid chromatography tandem mass spectrometry (LC-MS/MS), various clean-up methods were evaluated for efficien…
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A fast and selective method for the determination of 8 carcinogenic polycyclic aromatic hydrocarbons in rubber and plastic materials Open
Polycyclic Aromatic Hydrocarbons (PAHs) have been detected in rubber and plastic components of a number of consumer products such as toys, tools for domestic use, sports equipment, and footwear, with carbon black and extender oils having b…
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Analysis of pesticide residues in soil: A review and comparison of methodologies Open
This work received national funds through Fundação para a Ciência e Tecnologia (FCT) through the Research units CENSE “Center for Environmental and Sustainability Research”, (PTDC/CTA-AMB/6587/2020) and LAQV/REQUIMTE (UID/QUI/ 50006/2020).…
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A novel method for extraction, clean-up and analysis of per- and polyfluoroalkyl substances (PFAS) in different plant matrices using LC-MS/MS Open
Per- and polyfluoroalkyl substances (PFAS) are chemicals of concern due to their persistence, bioaccumulation, and toxic properties. PFAS accumulation in plants poses a risk of human and animal exposure due to consumption of the affected p…
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A rapid method for the determination of brominated flame retardant concentrations in plastics and textiles entering the waste stream Open
Due to new European legislation, products going to waste are subject to ‘low persistent organic pollutant concentration limits’. Concentrations of restricted brominated flame retardants in waste products must be determined. A rapid extract…
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Evaluation of the automated micro-solid phase extraction clean-up system for the analysis of pesticide residues in cereals by gas chromatography-Orbitrap mass spectrometry Open
Food analysis is a tremendously broad field that is constantly evolving. New methods have emerged to increase productivity, such as modern miniaturized and robotic analytical techniques. In this paper, a micro-solid-phase extraction system…
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Non-target and suspect characterisation of organic contaminants in ambient air – Part 1: Combining a novel sample clean-up method with comprehensive two-dimensional gas chromatography Open
Long-term monitoring of regulated organic chemicals, such as legacy persistent organic pollutants (POPs) and polycyclic aromatic hydrocarbons (PAHs), in ambient air provides valuable information about the compounds' environmental fate as w…
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Determination of Aflatoxin B<sub>1</sub> in Feedstuffs without Clean-Up Step by High-Performance Liquid Chromatography Open
A reliable and rapid method has been developed for the determination of aflatoxin B 1 (AFB 1 ) in four kinds of feedstuffs comprising broken rice, peanuts, corn, and fishmeal. A sample preparation was carried out based on the QuEChERS meth…
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Investigation of the Effect of Al2O3 Nanoparticle-Added MQL Lubricant on Sustainable and Clean Manufacturing Open
In this study, in order to improve the characteristics of the vegetable-based cutting fluids used in the MQL technique and increase the machining performance of MQL and its positive effects on sustainable manufacturing, the effects of the …
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Regeneration and Reuse of Immunoaffinity Column for Highly Efficient Clean-Up and Economic Detection of Ochratoxin A in Malt and Ginger Open
Immunoaffinity columns (IACs) are most popularly used for mycotoxin clean-up in complex matrices prior to chromatographic analysis. But, their high cost has limited their wide application and the regeneration of IACs for multiple instances…
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Method Development for Sulfonylurea Herbicides Analysis in Rapeseed Oil Samples by HPLC–DAD: Comparison of Zirconium-Based Sorbents and EMR-Lipid for Clean-up of QuEChERS Extract Open
This study develops a simple, cost-effective and sensitive high-performance liquid chromatography with diode array detector (HPLC–DAD) method for the simultaneous determination of eight sulfonylurea herbicides (oxasulfuron, metsulfuron-met…
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Optimization of a Multi-Residue Analytical Method during Determination of Pesticides in Meat Products by GC-MS/MS Open
In this study, a multi-residue analysis was developed for 32 compounds, including pesticides and metabolites, in five meat products using gas chromatography-tandem mass spectrometry (GC-MS/MS). The validation of the developed analytical me…
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ProMix: Combating Label Noise via Maximizing Clean Sample Utility Open
Learning with Noisy Labels (LNL) has become an appealing topic, as imperfectly annotated data are relatively cheaper to obtain. Recent state-of-the-art approaches employ specific selection mechanisms to separate clean and noisy samples and…
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Development and Application of a Multi-Residue Method to Determine Pesticides in Agricultural Water Using QuEChERS Extraction and LC-MS/MS Analysis Open
Agricultural water is closely linked to surface and ground water as well as soil; hence, ensuring its safety is an important endeavor. We used the “quick, easy, cheap, effective, rugged, and safe” (QuEChERS) method to analyze multi-residue…
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Analysis of multiresidue pesticides in dried hops by LC-MS/MS using QuEChERS extraction together with dSPE clean-up Open
A simple and selective method is reported for the simultaneous determination of 48 fungicide, insecticide and herbicide residues in hops by LC–MS/MS. The extraction of pesticide residues from the hop matrix was conducted by a method based …
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Enabling clean access into Subglacial Lake Whillans: development and use of the WISSARD hot water drill system Open
Clean hot water drill systems (CHWDSs) are used with clean access protocols for the exploration of subglacial lakes and other subglacial aquatic environments (e.g. ice-shelf cavities) in Antarctica. A CHWDS developed for the Whillans Ice S…