Erwin Adams
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View article: NIR and MIR Spectroscopy for the Detection of Adulteration of Smoking Products
NIR and MIR Spectroscopy for the Detection of Adulteration of Smoking Products Open
This study explores the application of Mid-Infrared (MIR) and Near-Infrared (NIR) spectroscopy combined with various multivariate calibration techniques to detect the presence of cannabis in tobacco samples and tobacco in herbal smoking pr…
View article: Mass Spectrometric Fingerprinting to Detect Fraud and Herbal Adulteration in Plant Food Supplements
Mass Spectrometric Fingerprinting to Detect Fraud and Herbal Adulteration in Plant Food Supplements Open
Mass spectrometric (MS) fingerprinting coupled with chemometrics for the detection of plants in plant mixtures is sparsely researched. This paper aims to check its value for herbal adulteration concerning plants with slimming as an indicat…
View article: Precision multiplexed base editing in human cells using Cas12a-derived base editors
Precision multiplexed base editing in human cells using Cas12a-derived base editors Open
View article: A Cost-Effective Liquid Chromatography Method with Ultraviolet Detection for Identity Screening and Assay of Injectable Antibiotics
A Cost-Effective Liquid Chromatography Method with Ultraviolet Detection for Identity Screening and Assay of Injectable Antibiotics Open
The presence of substandard and falsified (SF) medicines poses a significant challenge in resource-limited countries. Low-quality antibiotics are commonly reported in low-income countries. The present study aimed to develop and validate a …
View article: Nir and Mir Spectroscopy for the Detection of Adulteration of Smoking Products
Nir and Mir Spectroscopy for the Detection of Adulteration of Smoking Products Open
View article: Analysis Profiling of 48 Endogenous Amino Acids and Related Compounds in Human Plasma Using Hydrophilic Interaction Liquid Chromatography–Tandem Mass Spectrometry
Analysis Profiling of 48 Endogenous Amino Acids and Related Compounds in Human Plasma Using Hydrophilic Interaction Liquid Chromatography–Tandem Mass Spectrometry Open
Analyzing and detecting endogenous amino acids in blood is of crucial importance for the diagnosis of medical conditions and scientific research. Considering the lack of UV chromophores in most of these analytes and the presence of several…
View article: Evaluating MIR and NIR Spectroscopy Coupled with Multivariate Analysis for Detection and Quantification of Additives in Tobacco Products
Evaluating MIR and NIR Spectroscopy Coupled with Multivariate Analysis for Detection and Quantification of Additives in Tobacco Products Open
The detection and quantification of additives in tobacco products are critical for ensuring consumer safety and compliance with regulatory standards. Traditional analytical techniques, like gas chromatography–mass spectrometry (GC–MS), liq…
View article: An Analytical View on the Use of Flucloxacillin for Outpatient Parenteral Antimicrobial Therapy
An Analytical View on the Use of Flucloxacillin for Outpatient Parenteral Antimicrobial Therapy Open
Although the addition of buffers provides improved stability to flucloxacillin (FLU) solutions, unbuffered solutions are often preferred in clinical practice. The first purpose of this study was to investigate whether a 50 mg/mL solution o…
View article: Development and Validation of Liquid Chromatographic Method for Fast Determination of Lincomycin, Polymyxin and Vancomycin in Preservation Solution for Transplants
Development and Validation of Liquid Chromatographic Method for Fast Determination of Lincomycin, Polymyxin and Vancomycin in Preservation Solution for Transplants Open
In this study, a liquid chromatographic method was developed for the fast determination of lincomycin, polymyxin and vancomycin in a preservation solution for transplants. A Kinetex EVO C18 (150 × 4.6 mm, 2.6 µm) column was utilized at 45 …
View article: Quantification of amino acids secreted by yeast cells by hydrophilic interaction liquid chromatography‐tandem mass spectrometry
Quantification of amino acids secreted by yeast cells by hydrophilic interaction liquid chromatography‐tandem mass spectrometry Open
Monitoring the levels of amino acids (AAs) in biological cell cultures provides key information to understand the regulation of cell growth and metabolism. Saccharomyces cerevisiae can naturally excrete AAs, making accurate detection and d…
View article: Recent progress in the extraction of terpenoids from essential oils and separation of the enantiomers by GC–MS
Recent progress in the extraction of terpenoids from essential oils and separation of the enantiomers by GC–MS Open
View article: Ecosystem transformation upon Aptian seawater ingress into the Proto-South Atlantic Ocean
Ecosystem transformation upon Aptian seawater ingress into the Proto-South Atlantic Ocean Open
The early evolution of the South Atlantic Ocean following the Cretaceous break-up of Gondwana is extensively recorded in rift basins along the conjugate margins of Africa and Brazil. For the Brazil margin, divergent views of the source and…
View article: Spectroscopy and Chemometrics for Conformity Analysis of e-Liquids: Illegal Additive Detection and Nicotine Characterization
Spectroscopy and Chemometrics for Conformity Analysis of e-Liquids: Illegal Additive Detection and Nicotine Characterization Open
Vaping electronic cigarettes (e-cigarettes) has become a popular alternative to smoking tobacco. When an e-cigarette is activated, a liquid is vaporized by heating, producing an aerosol that users inhale. While e-cigarettes are marketed as…
View article: Characterization of Ribostamycin and its Impurities Using a Nano-Quantity Analyte Detector: Systematic Comparison of Performance Among Three Different Aerosol Detectors
Characterization of Ribostamycin and its Impurities Using a Nano-Quantity Analyte Detector: Systematic Comparison of Performance Among Three Different Aerosol Detectors Open
View article: Characterization of polymerized impurities in cefoxitin sodium for injection by two-dimensional chromatography coupled with time-of-flight mass spectrometry
Characterization of polymerized impurities in cefoxitin sodium for injection by two-dimensional chromatography coupled with time-of-flight mass spectrometry Open
View article: Multidimensional Chromatographic Fingerprinting Combined with Chemometrics for the Identification of Regulated Plants in Suspicious Plant Food Supplements
Multidimensional Chromatographic Fingerprinting Combined with Chemometrics for the Identification of Regulated Plants in Suspicious Plant Food Supplements Open
The popularity of plant food supplements has seen explosive growth all over the world, making them susceptible to adulteration and fraud. This necessitates a screening approach for the detection of regulated plants in plant food supplement…
View article: Characterization of Polymerized Impurities in Cefoxitin Sodium for Injection by Two-Dimensional Chromatography Coupled with Time-of-Flight Mass Spectrometry
Characterization of Polymerized Impurities in Cefoxitin Sodium for Injection by Two-Dimensional Chromatography Coupled with Time-of-Flight Mass Spectrometry Open
View article: Simultaneous Detection of Ribostamycin Sulfate and its Related Substances Using a Novel HPLC-NQAD Method and Comparative Assessment of Aerosol Detectors
Simultaneous Detection of Ribostamycin Sulfate and its Related Substances Using a Novel HPLC-NQAD Method and Comparative Assessment of Aerosol Detectors Open
View article: Determination of Inorganic Ions in Parenteral Nutrition Solutions by Ion Chromatography
Determination of Inorganic Ions in Parenteral Nutrition Solutions by Ion Chromatography Open
A new, simple and sensitive ion chromatography (IC) method for the determination of sodium, potassium, magnesium, calcium and chloride in a parenteral nutrition (PN) solution was developed and validated. Before sample analysis, a sample pr…
View article: Identification of the major photodegradant in metronidazole by LC-PDA-MS and its reveal in compendial methods
Identification of the major photodegradant in metronidazole by LC-PDA-MS and its reveal in compendial methods Open
View article: Carbonate-associated sulfate constrains on the Cretaceous Barra Velha Formation
Carbonate-associated sulfate constrains on the Cretaceous Barra Velha Formation Open
View article: Primary organic matter preserved in chert from the Pre-salt Barra Velha Formation
Primary organic matter preserved in chert from the Pre-salt Barra Velha Formation Open
View article: Substandard and falsified antimicrobials: A potential biohazard in disguise?
Substandard and falsified antimicrobials: A potential biohazard in disguise? Open
View article: Development and validation of chromatographic methods for screening and subsequent quantification of suspected illegal antimicrobial drugs encountered on the Belgian market
Development and validation of chromatographic methods for screening and subsequent quantification of suspected illegal antimicrobial drugs encountered on the Belgian market Open
View article: 1353 Occupational asthma due to exposure to rhesus monkey
1353 Occupational asthma due to exposure to rhesus monkey Open
Introduction A common cause of occupational asthma is exposure to animal proteins. Knowing this, laboratory workers are at risk when they work with laboratory animals (e.g. mice, rats, guinea pigs, rabbits). No reports were made up to date…
View article: 786 Sarcoidosis in two workers making light bulbs
786 Sarcoidosis in two workers making light bulbs Open
Introduction Two out of about 30 workers in a light bulb production unit were diagnosed with 'sarcoidosis' and referred to our occupational health clinic in 2014. Case reports A 27-year-old male (case A) was diagnosed with sarcoidosis in J…
View article: Effect of Storage Conditions on Stability of Ophthalmological Compounded Cysteamine Eye Drops
Effect of Storage Conditions on Stability of Ophthalmological Compounded Cysteamine Eye Drops Open
View article: Headspace gas chromatography based methodology for the analysis of aromatic substituted quaternary ammonium salts
Headspace gas chromatography based methodology for the analysis of aromatic substituted quaternary ammonium salts Open
View article: A sensitive capillary LC-UV method for the simultaneous analysis of olanzapine, chlorpromazine and their FMO-mediated N-oxidation products in brain microdialysates
A sensitive capillary LC-UV method for the simultaneous analysis of olanzapine, chlorpromazine and their FMO-mediated N-oxidation products in brain microdialysates Open
View article: Assay Development for Aminoglycosides by HPLC with Direct UV Detection
Assay Development for Aminoglycosides by HPLC with Direct UV Detection Open
The absence of UV chromophores in the structure of most aminoglycosides impedes an easy and straightforward development of analytical methods. It was demonstrated that addition of borate to the mobile phase allowed direct detection of amin…