Identification and chemical characterization of specific organic indicators in the effluents from chemical production sites

Botalova, Oxana; Schwarzbauer, Jan; Sandouk, Nadia al

doi:10.1016/j.watres.2011.04.012

Cited by 26 publications

(22 citation statements)

References 41 publications

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“…TXIB is used as a plasticizer or the manufacture of PVC and vinyl plastics and its medium toxicity to fish was indicated in previous reports (Botalova et al, 2011). Triacetin detected in most of the studied samples.…”

Section: Resultsmentioning

confidence: 61%

“…Triacetin detected in most of the studied samples. It is a known contaminant in propellant and industrial wastewaters as well as in surface water (Botalova et al, 2011). It is mainly used as a cellulosic plasticizer in the manufacture of cigarette filters, plasticizer for laminating resins, vinylidene polymers and copolymers.…”

Section: Resultsmentioning

confidence: 99%

“…Triethyl phosphate was detected in several extracts of our samples. It is used as an industrial solvent, plasticizer for resins, plastics, gums, fire-retarding agent, defoamer and raw material for insecticides water (Botalova et al, 2011). Nonyl phenols, which are used as detergents and bumetrizole, which is used in cosmetics, were detected only in sample No 9 and are indeed frequently found in groundwaters (Lapworth et al, 2012).…”

Section: Resultsmentioning

confidence: 99%

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Organic Pollutants in the Groundwaters Used for Irrigation Purpose Within a Coal-Bearing Basin of Northern Greece

Iordanidis¹,

Schwarzbauer²,

Gudulas³

2017

geosociety

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The aim of this study is to identify potential toxic or environmentally relevant organic compounds in the aquifers of the Amynteo hydrogeological basin and to investigate a possible link of the identified organic contaminants with the Περίληψη Σκοπός της παρούσας μελέτης είναι ο εντοπισμός τοξικών οργανικών ενώσεων στα υπόγεια ύδατα της υδρογεωλογικής λεκάνης Αμυνταίου και η έρευνα μιας πιθανής σύνδεσης αυτών των οργανικών ρυπαντών με τους λιγνίτες της περιοχής. Δέκα δείγματα υπόγειων υδάτων συλλέχθηκαν και υπέστησαν μία διαδοχική διαδικασία εκχύλισης υγρού-υγρού με διχλωρομεθάνιο. Όλα τα εκχυλίσματα αναλύθηκαν με αέρια χρωματογραφία-φασματομετρία μάζας (GC-MS). Οι οργανικές ενώσεις που προσδιορίστηκαν είναι : 2,2, τριακετίνη, ισοπροπυλικά παλμινικά, μυριστικό ισοπροπύλιο, Ν, εννεϋλοφαινόλες και μπουμετριζόλη. Ωστόσο, όλες

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Section: Resultsmentioning

confidence: 61%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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Organic Pollutants in the Groundwaters Used for Irrigation Purpose Within a Coal-Bearing Basin of Northern Greece

Iordanidis¹,

Schwarzbauer²,

Gudulas³

2017

geosociety

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“…Thus, the observed demethylated and demethoxymethylated derivatives might stem both from transformation or these technical mixtures. HMMM and related compounds have been previously identified in wastewater and surface water [2,3,44]. A widespread presence of HMMM in German rivers was reported by Dsikowitzky and Schwarzbauer [13] with a huge temporal and spatial variation and maximum concentrations of up to 880 ng/L in the Mulde river.…”

Section: Site Db (Dorfbach Niederschindmaas)mentioning

confidence: 87%

Prioritising site-specific micropollutants in surface water from LC-HRMS non-target screening data using a rarity score

et al. 2019

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Background: Current compound prioritisation and monitoring approaches within Europe focus mainly on widely occurring priority and river basin specific pollutants but may overlook site-specific contamination from local emission sources. Thus, we propose a robust and semiautomated approach for the identification of site-specific chemicals and a prioritisation of water bodies with specific contamination based on non-target screening data from liquid chromatography coupled to high-resolution mass spectrometry. Results: For prioritisation of site-specific contaminants, we calculated rarity scores for all peaks occurring in a set of 31 surface water samples, which combine the maximum signal intensity of a peak in a dataset with its frequency of occurrence in that dataset in one single number. These were a robust measure without the need to address the problems of missing data in more sophisticated multivariate statistical methods. For our dataset, site-specific compounds were defined for rarity scores > 1000, and the studied 31 sites showed a huge difference in the number of such peaks (0-91 in positive and 0-48 in negative ion mode). Together with isotopologue detection, the evaluation of mass defects and the occurrence of homologue series, which all could be obtained from automated data processing, a more detailed characterisation of these site-specific contaminations was possible. For three selected sites with a high number of site-specific peaks, novel or unexpected compounds could be identified, which stem from specific usage or (former) industrial production upstream of these sites. Conclusions and outlook: The proposed approach allows for a rapid screening of large non-target screening datasets for site-specific contaminants, the prioritisation of sites with such a specific contamination and the subsequent identification of these compounds. Thus, the risk of overlooking possibly hazardous chemicals (including unknowns) which are not covered in conventional monitoring and prioritisation schemes is reduced.

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“…For large-scale commercial production, the pheromone components are traditionally synthesized chemically, which often requires harmful reactants and may generate chemical waste [8]. The starting material when synthesizing moth pheromone components is typically saturated fatty alcohols that can be produced from natural sources by hydrolysis of wax esters from sperm oil, reduction of wax esters with sodium, or by hydrogenation of natural raw materials.…”

Section: Introductionmentioning

confidence: 99%

A moth pheromone brewery: production of (Z)-11-hexadecenol by heterologous co-expression of two biosynthetic genes from a noctuid moth in a yeast cell factory

et al. 2013

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BackgroundMoths (Lepidoptera) are highly dependent on chemical communication to find a mate. Compared to conventional unselective insecticides, synthetic pheromones have successfully served to lure male moths as a specific and environmentally friendly way to control important pest species. However, the chemical synthesis and purification of the sex pheromone components in large amounts is a difficult and costly task. The repertoire of enzymes involved in moth pheromone biosynthesis in insecta can be seen as a library of specific catalysts that can be used to facilitate the synthesis of a particular chemical component. In this study, we present a novel approach to effectively aid in the preparation of semi-synthetic pheromone components using an engineered vector co-expressing two key biosynthetic enzymes in a simple yeast cell factory.ResultsWe first identified and functionally characterized a ∆11 Fatty-Acyl Desaturase and a Fatty-Acyl Reductase from the Turnip moth, Agrotis segetum. The ∆11-desaturase produced predominantly Z11-16:acyl, a common pheromone component precursor, from the abundant yeast palmitic acid and the FAR transformed a series of saturated and unsaturated fatty acids into their corresponding alcohols which may serve as pheromone components in many moth species. Secondly, when we co-expressed the genes in the Brewer’s yeast Saccharomyces cerevisiae, a set of long-chain fatty acids and alcohols that are not naturally occurring in yeast were produced from inherent yeast fatty acids, and the presence of (Z)-11-hexadecenol (Z11-16:OH), demonstrated that both heterologous enzymes were active in concert. A 100 ml batch yeast culture produced on average 19.5 μg Z11-16:OH. Finally, we demonstrated that oxidized extracts from the yeast cells containing (Z)-11-hexadecenal and other aldehyde pheromone compounds elicited specific electrophysiological activity from male antennae of the Tobacco budworm, Heliothis virescens, supporting the idea that genes from different species can be used as a molecular toolbox to produce pheromone components or pheromone component precursors of potential use for control of a variety of moths.ConclusionsThis study is a first proof-of-principle that it is possible to “brew” biologically active moth pheromone components through in vitro co-expression of pheromone biosynthetic enzymes, without having to provide supplementary precursors. Substrates present in the yeast alone appear to be sufficient.

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Identification and chemical characterization of specific organic indicators in the effluents from chemical production sites

Cited by 26 publications

References 41 publications

Organic Pollutants in the Groundwaters Used for Irrigation Purpose Within a Coal-Bearing Basin of Northern Greece

Organic Pollutants in the Groundwaters Used for Irrigation Purpose Within a Coal-Bearing Basin of Northern Greece

Prioritising site-specific micropollutants in surface water from LC-HRMS non-target screening data using a rarity score

A moth pheromone brewery: production of (Z)-11-hexadecenol by heterologous co-expression of two biosynthetic genes from a noctuid moth in a yeast cell factory

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