Influence of natural organic matter on the solid-phase extraction of organic micropollutants

2007 ◽  
Vol 1173 (1-2) ◽  
pp. 1-9 ◽  
Author(s):  
L. Jeanneau ◽  
P. Faure ◽  
E. Jardé
Keyword(s):  
Organic Matter ◽  
Solid Phase Extraction ◽  
Natural Organic Matter ◽  
Solid Phase ◽  
Phase Extraction ◽  
Organic Micropollutants

Rapid Fractionation of Natural Organic Matter in Water Using a Novel Solid-Phase Extraction Technique

2009 ◽  
Vol 81 (11) ◽  
pp. 2299-2308 ◽  
Author(s):  
Thunyalux Ratpukdi ◽  
James A. Rice ◽  
Gabriela Chilom ◽  
Achintya Bezbaruah ◽  
Eakalak Khan
Keyword(s):  
Organic Matter ◽  
Solid Phase Extraction ◽  
Natural Organic Matter ◽  
Solid Phase ◽  
Extraction Technique ◽  
Phase Extraction

Characterization of the changes in polarity of natural organic matter using solid-phase extraction: introducing the NOM polarity rapid assessment method (NOM-PRAM)

2004 ◽  
Vol 4 (4) ◽  
pp. 11-18 ◽  
Author(s):  
F.L. Rosario-Ortiz ◽  
K. Kozawa ◽  
H.N. Al-Samarrai ◽  
F.W. Gerringer ◽  
C.J. Gabelich ◽  
...  
Keyword(s):  
Organic Matter ◽  
Water Treatment ◽  
Solid Phase Extraction ◽  
Natural Organic Matter ◽  
Solid Phase ◽  
Rapid Assessment ◽  
Assessment Method ◽  
Phase Extraction ◽  
Rapid Assessment Method ◽  
Wide Range

A new technique has been developed to quickly monitor the changes in polarity of aqueous natural organic matter (NOM) using solid-phase extraction (SPE) cartridges. This paper introduces the NOM polarity rapid assessment method (PRAM). The PRAM technique characterizes changes in NOM polarity by monitoring the breakthrough curves from different SPE cartridges at UV254. The SPE cartridges used in this study include a wide range of polarity from non-polar C-18 materials to anion exchangers. Each individual cartridge run takes 10 minutes and requires about 15 ml of sample. The collected water sample matrix is not changed, i.e. all PRAM analyses were done under ambient conditions on the original sample. Polarity evaluation is completed without the sample being exposed to changes in sample conditions, such as pH, solvent extraction, sequential evaporations or freeze-drying. This technique was able to monitor the weekly changes in NOM polarity entering a water treatment plant and compares the effects of different water treatment processes on this material.

scholarly journals Solid-phase extraction cartridges with multi-walled carbon nanotubes and effect of the oxygen functionalities on the recovery efficiency of organic micropollutants

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Marta O. Barbosa ◽  
Rui S. Ribeiro ◽  
Ana R. L. Ribeiro ◽  
M. Fernando R. Pereira ◽  
Adrián M. T. Silva
Keyword(s):  
Carbon Nanotubes ◽  
Solid Phase Extraction ◽  
Solid Phase ◽  
Surface Groups ◽  
Phase Extraction ◽  
Organic Micropollutants ◽  
Oxidation Method ◽  
Hydrothermal Oxidation ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes

AbstractPristine and functionalized multi-walled carbon nanotubes (MWCNTs) were investigated as adsorbent materials inside solid-phase extraction (SPE) cartridges for extraction and preconcentration of 8 EU-relevant organic micropollutants (with different pKa and polarity) before chromatographic analysis of surface water. The recoveries obtained were > 60% for 5/8 target pollutants (acetamiprid, atrazine, carbamazepine, diclofenac, and isoproturon) using a low amount of this reusable adsorbent (50 mg) and an eco-friendly solvent (ethanol) for both conditioning and elution steps. The introduction of oxygenated surface groups in the carbon nanotubes by using a controlled HNO3 hydrothermal oxidation method, considerably improved the recoveries obtained for PFOS (perfluorooctanesulfonic acid) and methiocarb, which was ascribed to the hydrogen bond adsorption mechanism, but decreased those observed for the pesticide acetamiprid and for two pharmaceuticals (carbamazepine and diclofenac), suggesting π–π dispersive interactions. Moreover, a good correlation was found between the recovery obtained for methiocarb and the amount of oxygenated surface groups on functionalized MWCNTs, which was mainly attributed to the increase of phenols and carbonyl and quinone groups. Thus, the HNO3 hydrothermal oxidation method can be used to finely tune the surface chemistry (and texture) of MWCNTs according to the specific micropollutants to be extracted and quantified in real water samples.

Characterization of wastewater effluent organic matter with different solid phase extraction sorbents

Chemosphere ◽  
2020 ◽  
Vol 257 ◽  
pp. 127235
Author(s):  
Xin Wang ◽  
Yuanyuan Ji ◽  
Quan Shi ◽  
Yahe Zhang ◽  
Chen He ◽  
...  
Keyword(s):  
Organic Matter ◽  
Solid Phase Extraction ◽  
Solid Phase ◽  
Wastewater Effluent ◽  
Phase Extraction ◽  
Effluent Organic Matter
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