Emerging Pollutants

Wells, Martha J.M.; Fono, Lorien J.; Pellegrin, Marie-Laure; Morse, Audra

doi:10.2175/106143007x218719

Cited by 18 publications

(8 citation statements)

References 43 publications

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“…The separation of these areas is defined by a line, marking the threshold value of a substance (dotted line, exceeding a threshold value or substance concentration). In a planning process the choice of one or several parameters (e.g., E. coli), which are considered for safety evaluations of drinking water supplies, is determined by "problematic" substances (i.e., emerging chemicals, Wells et al 2007) in the river or in the catchment areas. The filter performance, defined as the ratio of the substance concentration in the extracted groundwater to that in the infiltrated river water or river water, is particularly dependent on the load of the river water, the structural properties of the riverbed and the aquifer (infiltration rates, groundwater mixing ratios, residence times) and groundwater flow patterns, as well as the properties of substances and of the groundwater.…”

Section: Endangerment and Hazard Assessmentmentioning

confidence: 99%

Urban Geology

Huggenberger¹,

Epting²

2011

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Section: Endangerment and Hazard Assessmentmentioning

confidence: 99%

Urban Geology

Huggenberger¹,

Epting²

2011

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“…Pesticides have been used widely to prevent crop damage and reduce diseases, more than 40% of marketed pesticides using in China are chiral . Chiral pesticides comprise an important and emerging group of agrochemicals nowadays . Chiral enantiomers have identical physical and chemical properties , and they may differ dramatically in their biological efficacy, toxicity, and environmental fate when they interact with other chiral molecules, such as enzymes and biological receptors , that is to say one enantiomer degraded when the other accumulates in the environment .…”

Section: Introductionmentioning

confidence: 99%

Enantioselective determination of acaricide etoxazole in orange pulp, peel, and whole orange by chiral liquid chromatography with tandem mass spectrometry

Yao

Zhuang

et al. 2015

J of Separation Science

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An efficient enantioselective method for the determination of etoxazole in orange pulp, peel, and whole orange was developed using liquid chromatography with tandem mass spectrometry. The enantioseparation was performed on a Chiralpak AD-3R column at 30ºC using acetonitrile with 0.1% formic acid solution (80:20, v/v) as the mobile phase in less than 5 min. Quantification was achieved using matrix-matched standard calibration curves. The overall mean recoveries for two enantiomers from orange pulp and whole orange were 91.0-99.6% and the orange peel was 92.6-103.1%, with relative standard deviations of 0.8-5.4% intraday and 2.0-4.8% interday at 1, 10, and 100 μg/kg levels, and 1.3-5.2% intraday and 3.5-4.3% interday at 5, 50, and 500 μg/kg levels, respectively. The limits of quantification for all enantiomers in three matrices did not exceed 5 μg/kg. Moreover, the absolute configuration of etoxazole enantiomers had been determined by the combination of experimental and predicted electronic circular dichroism spectra, and the first eluted enantiomer was confirmed as (S)-etoxazole on a Chiralpak AD-3R column while (R)-etoxazole was first on three cellulose chiral columns. The application of the proposed method to real sample analysis suggests its potential use in enantioselective determination of etoxazole enantiomers in citrus.

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“…The chemical properties of every substance determine its behavior through the wastewater treatment, the mobility, persistence and even the bioavailability in the soil matrix (Clarke and Smith, 2011). All antibiotics, many other pharmaceuticals and PPCPs have the tendency to persist or to be only partially degraded during treatment or even to bypass treatment altogether via sewage overflows, therefore, contributing to their load in receiving waters, many of which serve as recreational and drinking water sources (Clarke and Smith, 2011;Hernando et al, 2011;Oulton et al, 2010;Reif et al, 2011;Wells et al 2010).…”

Section: 1mentioning

confidence: 99%

Emerging contaminants : a tutorial mini-review

2013

Global NEST Journal

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Nowadays, the scientific community has focused and prioritised research on "emerging pollutants". The term "emerging pollutants" stands for the substances that are released in the environment for which currently no regulations are established for their environmental monitoring. Their occurrence is reported worldwide in a range of aquatic environments, such as lakes, rivers, freshwater catchments, estuaries, reservoirs and marine waters. Nevertheless, due to their large number (ranging in an order of thousands), only few of these compounds are toxicologically evaluated. Published data concerning occurrence and potential toxicological effects is limited. The contamination source of the aquatic environment is mainly the effluents from the sewage treatment plants (STPs). Reliable methods are available for residue analysis of these pollutants down to low ng L -1 levels. However, an urgent need is highlighted for the investigation (primarily in environmental media and following in biological ones) of the toxicity and transformation pathways of all emerging pollutants. The aims of this mini-review are to briefly present: (a) the major classes of emerging pollutants; (b) the reasons why these substances constitute an environmental issue; and (c) developments and applications of environmental analysis in this field.

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Emerging Pollutants

Cited by 18 publications

References 43 publications

Urban Geology

Urban Geology

Enantioselective determination of acaricide etoxazole in orange pulp, peel, and whole orange by chiral liquid chromatography with tandem mass spectrometry

Emerging contaminants : a tutorial mini-review

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