A5074691980- Toxic Organic Pollutants Impact
- Environmental Toxicology and Ecotoxicology
- Air Quality and Health Impacts
- Analytical chemistry methods development
- Mercury impact and mitigation studies
- Petroleum Processing and Analysis
- Pesticide Residue Analysis and Safety
- Atmospheric chemistry and aerosols
- Pharmaceutical and Antibiotic Environmental Impacts
- Odor and Emission Control Technologies
- Effects and risks of endocrine disrupting chemicals
- Carcinogens and Genotoxicity Assessment
- Marine animal studies overview
- Microplastics and Plastic Pollution
- Analytical Chemistry and Chromatography
- Water Treatment and Disinfection
- Metabolomics and Mass Spectrometry Studies
- Heavy Metal Exposure and Toxicity
- Nanofabrication and Lithography Techniques
- Mass Spectrometry Techniques and Applications
- Recycling and Waste Management Techniques
- Radioactive element chemistry and processing
- Spectroscopy and Chemometric Analyses
- NMR spectroscopy and applications
- Chromatography in Natural Products
Vrije Universiteit Amsterdam
2016-2024
Norwegian Institute for Water Research
2022
Wageningen University & Research
2022
The University of Queensland
2013-2020
Utrecht University
2013
To simultaneously quantify and profile the complex mixture of short-, median-, long-chain CPs (SCCPs, MCCPs, LCCPs) in Australian sewage sludge, we applied further validated a recently developed novel instrumental technique, using quadrupole time-of-flight high resolution mass spectrometry running negative atmospheric pressure chemical ionization mode (APCI-qTOF-HRMS). Without an analytical column cleaned extracts were directly injected into qTOF-HRMS followed by quantification mathematical...
To survey the conformity and quality of results among laboratories for microplastics determination worldwide, an international laboratory intercomparison development exercise was organized. The 34 participants were requested to determine polymer type number or mass particles in 12 samples, i.e. six samples containing pre-production pellets, five dissolvable soda tablets different (smaller) one blank tablet. A novel method providing test materials aluminium strips used. Thirty (88%) submitted...
Atmospheric levels of chlorinated paraffins (CPs) at five remote, six rural and four urban sites in Australia were measured using XAD-2 passive air samplers (XAD-PAS). While long-chain CP (LCCP, C>17) below method detection limits (MDLs), short-chain CPs (SCCPs, C10-13) and, for the first time, medium-chain (MCCPs, C14-17) with a carbon chain length nine (CP-C9) found many (88%, 81% 88%, respectively) across Australian continent, representing range environmental conditions. Applying...
Quantification of bioaccumulative contaminants in biota is time and cost-intensive the required extensive cleanup steps make it selective toward targeted chemical groups. Therefore tissue extracts prepared for analysis are not amenable to assess combined effects unresolved complex mixtures. Passive equilibrium sampling with polydimethylsiloxane (PDMS) has potential unbiased mixtures, PDMS can be directly dosed into cell-based bioassays. The passive approach was tested by exposing lipid-rich...
Chlorinated paraffins (CPs) are high production volume chemicals of which some show resistance to environmental degradation, long-rang transport, bioaccumulation and toxicity potential. Information regarding their presence in humans is limited, including human The present study aimed evaluate CP levels serum from Australia order better understand exposure current pollution status as well trends associated with age time between 2004 2015. For this, we selected a male sub-group the Australian...
Ambient air samples were collected in Brisbane (Australia), Dalian (China), and Hanoi (Vietnam) during Mar 2013-Feb 2018 using polyurethane foam based passive samplers. A sampling rate calibration experiment was conducted for chlorinated paraffins (CPs, i.e., short-chain, medium-chain, long-chain CPs), where the rates 4.5 ± 0.7, 4.8 0.3, 2.1 m3 day-1 SCCPs, MCCPs, LCCPs, respectively. The atmospheric concentration of CPs then calculated medians ∑CPs 0.079, 1.0, 0.89 ng m-3 Brisbane, Dalian,...
Chlorinated paraffins (CPs) are industrial chemicals categorised as persistent organic pollutants because of their toxicity, persistency and tendency to long-range transport, bioaccumulation biomagnification. Despite having been the subject environmental attention for decades, analytical methods CPs still struggle reaching a sufficient degree accuracy. Among issues negatively impacting quantification CPs, unavailability well-characterised standards, both pure substances matrix (certified)...
An optimized low volume sampler was developed to determine both gas- and particle bound concentrations of short medium-chain chlorinated paraffins (S/MCCPs). Background contamination limited by the design, providing method quantification limits (MQLs) at least two orders magnitude lower than other studies within gas (MQL: 500 pg (ΣSCCPs), 1.86 ng (ΣMCCPs)) 1.72 (ΣMCCPs) phases. Good repeatability observed between parallel indoor measurements (RSD ≤ 9.3% (gas), RSD 14% (particle)) with no...
A semiquantitative high-resolution mass spectrometry method was developed and applied to assess the occurrence of bromo-/chloro paraffins (BCPs) olefins (BCOs) in environment. More than 400 possible BCPs BCO congener groups were detected dust, air, sewage sludge samples collected from Australia. Median chain analytes with number halogen atoms <7 (CnHmClxBry, 14 ≤ n 17, x + y < 7) prevailed dust samples, while short 10 13, predominated air samples. The estimated concentrations ∑BCPs ∑BCOs...
This study presents, for the first time, successful application of analyzing a whole gas chromatography (GC) chromatogram by nuclear magnetic resonance (NMR) spectroscopy using continuous repeatable and stable (n = 280) high-resolution (HR) GC fractionation platform with 96-well plate. Typically GC– or liquid chromatography–mass spectrometry analysis, (isomer) standards and/or additional NMR analysis are needed to confirm identification structure analyte interest. In case complex substances...
The addition of activated carbon (AC) to sediments is a relatively new approach remediate contaminated sites. Activated strongly sorbs hydrophobic organic contaminants, thereby reducing their bioavailability and uptake in organisms. Because its high sorption capacity, AC might, however, also sorb other chemicals that are not contaminants but instead have ecological functions. Examples such compounds infochemicals or pheromones (i.e., serving as chemical inter- intraspecies information...
A new simple method for chlorine percentage calculations (method C), from proton nuclear magnetic resonance (1H NMR) spectroscopy, has been established and applied to an industrial chlorinated paraffin (CP) mixture 13 single-chain CPs of known carbon chain lengths. Two modified methods B), originating the work Sprengel et al., have utilized on same mixtures. All samples were analysed by 1H NMR two-dimensional heteronuclear quantum coherence (HSQC) this purpose. three worked well medium...
ADVERTISEMENT RETURN TO ISSUEPREVAddition/CorrectionORIGINAL ARTICLEThis notice is a correctionCorrection to Applicability of Passive Sampling Bioanalytical Screening Bioaccumulative Chemicals in Marine WildlifeLing Jin*, Caroline Gaus, Louise van Mourik, and Beate I. EscherCite this: Environ. Sci. Technol. 2014, 48, 10, 6053Publication Date (Web):May 6, 2014Publication History Published online6 May 2014Published inissue 20...