Studies on the Behaviour of Water‐endangering Substances in Plants for the Biological Cleaning of Municipal Waste Waters. Part 1: Bromoxynil

Luther, D.; Abendroth, H.‐C.; Prause, C.; Leipold, W.

doi:10.1002/aheh.19850130208

Cited by 2 publications

(1 citation statement)

References 11 publications

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“…Four of these six metabolites (MB‐1 MB‐2, MB‐5 and MB‐6) were described earlier in other matrices. Luther et al 9 could identify MB‐1 and MB‐2 in waste water and sewage sludge, while MB‐5 and MB‐6 were known to be reaction products of bromoxynil in photochemical reactors under laboratory conditions 10. 11 In Figs 1–5 the EI‐mass spectra (MB‐3, MB‐4) and fragmentation pathways (MB‐5, MB‐6) of the methylated metabolites are shown.…”

Section: Resultsmentioning

confidence: 99%

Studies on the metabolism of hydroxybenzonitrile herbicides: I. Mass spectrometric identification

et al. 2000

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The biodegradation and transport of the herbicides bromoxynil and ioxynil during artificial groundwater recharge and bank filtration were investigated to allow further risk assessment. The main field of interest was the identification and the behaviour of metabolites of these herbicides. The behaviour of the phenoxy alkanoic acid mecoprop (MCPP) was also investigated, because in commercial products MCPP is often applied in combination with bromoxynil and ioxynil. A pilot plant at the Institut für Wasserforschung in Schwerte (Ruhr valley, NRW) was used for the experiments, simulating worst‐case situations during slow sand filtration and aerobic and anaerobic underground passage. Six metabolites of bromoxynil, seven of ioxynil and one of mecoprop could be identified using GC/MS with electron impact ionization. In addition MS/MS was used to confirm the results. Seven of these 14 metabolites are described for the first time. Two main pathways of metabolism can be proposed; one is the hydrolysis of the nitrile group, resulting in the benzoic acid amide and the corresponding benzoic acid respectively, the other is a remarkable replacement of bromine and iodine by chlorine when chloride is present in the matrix. The only metabolite of mecoprop which could be identified under these conditions was the corresponding 4‐chloro‐2‐methylphenol. After four weeks no further degradation of this phenol could be observed. Some of the metabolites could be identified even after four weeks, so that it is obvious that they are capable of reaching the groundwater in natural systems. © 2000 Society of Chemical Industry

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Section: Resultsmentioning

confidence: 99%

Studies on the metabolism of hydroxybenzonitrile herbicides: I. Mass spectrometric identification

et al. 2000

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Use of Catalytic Metal‐Polyethylene Imine Complexes and Recovered Polymeric Sorbents for the Chemisorptive Removal of Polyphenols and Phenols

Стом

Butina

Shakhova

et al. 1989

Acta hydrochim. hydrobiol.

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Summary: Investigations of the chemisorptive properties of polyethylene imine with respect t o phenol compounds have been carried out. It has been established that in the reaction of polyethylene imine with phenol compounds a three-dimensional polymer is formed by cross-linking and precipitates. The use of transitlion metal-polyethylene imine complexes accelerates the oxidation of intermediates of the quinoid type. Results have been obtained in studying the spectral characteristics of the products of the reaction of phenols and quinones with polyethylene imine and catalyt,ic metal-(11)-polyethylene imine complexes. The kinetic study of t,his process has shown the reaction to obey a first-order equation.The. use of a recovered sorbent, t>he cyatein-pretreated anion-exchanger AB-17-8, for the sorption and further Oxidation of phenols and quinones by the subdtitution of a cyetein anion containing an SH-group for an ion-exchange polymer anion has been studied. It is suggested to employ sodium sulfite instead of cystein in order to reduce the cost of treat.ment and analysis of waste waters with high phenol and quinone contents.

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Studies on the Behaviour of Water‐endangering Substances in Plants for the Biological Cleaning of Municipal Waste Waters. Part 1: Bromoxynil

Cited by 2 publications

References 11 publications

Studies on the metabolism of hydroxybenzonitrile herbicides: I. Mass spectrometric identification

Studies on the metabolism of hydroxybenzonitrile herbicides: I. Mass spectrometric identification

Use of Catalytic Metal‐Polyethylene Imine Complexes and Recovered Polymeric Sorbents for the Chemisorptive Removal of Polyphenols and Phenols

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