Journal Article10.1021/AC9609788
Solid Phase Microextraction for Determining the Distribution of Chemicals in Aqueous Matrices
239
TL;DR: In this article, the authors compared the results obtained for the two samples and calculated the partitioning of the target analyte between water and the pseudophase, such as dissolved humic organic matter (HOM).
read more
Abstract: Solid phase microextraction (SPME) can be applied to measure the distribution of chemicals in different speciation states. The standard SPME apparatus and procedures can be applied to measure free concentrations of a target compound spiked into pure water and spiked into water containing another pseudophase, such as dissolved humic organic matter (HOM). Based on a comparison of results obtained for the two samples, the partitioning of the target analyte between water and the pseudophase is calculated. The samples investigated in the present study were from heavily contaminated coal wastewater containing dissolved organic polymers with properties similar to those of HOM. External calibration provides information about freely dissolved analytes. After calibration of the SPME signal by addition of an internal standard (e.g., a deuterated surrogate), the results indicate the total concentration of the target analyte in the sample due to the identical partitioning of the internal standard. The concentration de...
read more
Chat with Paper
AI Agents for this Paper
Find similar papers on Google Scholar, PubMed and Arxiv
Write a critical review of this paper
Analyze citations of this paper to find unaddressed research gaps
Citations
Sensing Dissolved Sediment Porewater Concentrations of Persistent and Bioaccumulative Pollutants Using Disposable Solid-Phase Microextraction Fibers
Philipp Mayer,Wouter H. J. Vaes,Femke G. Wijnker,Karin C. H. M. Legierse,Rik Kraaij,Johannes Tolls,Joop L. M. Hermens +6 more
TL;DR: The matrix solid-phase microextraction (matrix-SPME) as mentioned in this paper was applied as a disposable sampler to measure dissolved concentrations of persistent and bioaccumulative pollutants (PBPs) in sediment porewater.
323
Solid-phase microextraction for determining the distribution of sixteen US Environmental Protection Agency polycyclic aromatic hydrocarbons in water samples
TL;DR: Headspace SPME is a valid alternative for the determination of two- to five-ring PAHs and the reproducibility of the measurements between fibers was found to be very good.
277
Amperometric tyrosinase biosensor based on Fe3O4 nanoparticles–chitosan nanocomposite
TL;DR: A novel tyrosinase biosensor based on Fe(3)O(4) nanoparticles-chitosan nanocomposite has been developed and shows great promise for rapid, simple, and cost-effective analysis of phenolic contaminants in environmental samples.
212
New Trends in Solid-Phase Microextraction
Ralf Eisert,Janusz Pawliszyn +1 more
TL;DR: Recently introduced solid-phase microextraction (SPME) method has been applied to many different applications including analysis of air, water, and soil, both organic and inorganic target analytes.
209
Measurement of free concentrations using negligible depletion-solid phase microextraction (nd-SPME)
TL;DR: A brief overview of the methods available to measure free concentrations and will focus on negligible depletion-solid phase microextraction (nd-SPME) can be found in this article, including potential confounding factors, such as fouling, diffusion layer effects, and calibration.
202
References
Sorption of hydrophobic pollutants on natural sediments
TL;DR: In this article, the authors investigated the sorption of hydrophobic compounds (aromatic hydrocarbons and chlorinated polycyclic aromatic compounds) spanning a concentration range in water solubility from 500 parts per trillion (ppt) to 1800 parts per million (ppm) on local pond and river sediments.
2.7K
Partition equilibriums of nonionic organic compounds between soil organic matter and water.
TL;DR: “Ambient Hydrocarbons and Ozone Concentrations Near a Refinery: Robinson, Illinois 1977”; Final Report to the U.S. Environmental Protection Agency, for Grant 805376, 1982.
1K
Sorption phenomena in subsurface systems: Concepts, models and effects on contaminant fate and transport
TL;DR: In this article, current levels of understanding of the reactions and processes comprising sorption phenomena are discussed, as well as the forms and utilities of different models used to describe them, and the translation of these concepts into functional models for characterizing sorption rates and equilibria.
655
Linear solvation energy relationship. 46. An improved equation for correlation and prediction of octanol/water partition coefficients of organic nonelectrolytes (including strong hydrogen bond donor solutes)
TL;DR: Les coefficients de partage octanol/eau de 245 composes aliphatiques et aromatiques sont bien correles par la relation d'energie de solvatation lineaire: logK ow = 0,35+5,35V I /100-1,04(π*−0,35δ)-3,84 β m +0,10α m (r=0,9959, SD= 0,131) ou V I est le volume molaire intrinseque, π*, β
444
Reverse-phase separation method for determining pollutant binding to Aldrich humic acid and dissolved organic carbon of natural waters
TL;DR: The reverse-phase separation technique was simple and rapid and gave results similar to dialysis techniques and was approximately 1 order of magnitude lower than that determined for the Aldrich humics at similar DOC concentrations.
433