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Dermietzel, J.; Christoph, Gernot

doi:10.1023/a:1005224117670

Cited by 13 publications

(1 citation statement)

References 7 publications

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“…In the upper aquifer, monochlorobenzene is the most important groundwater contaminant (20-30 mg L À1 ), whereas chloroethenes dominate in the aquifer below the lignite seam. 13 The locations of the sampling wells used in this study are shown in Fig. 1 and their selected geophysical parameters are given in Table 1.…”

Section: Sampling Sitesmentioning

confidence: 99%

Performance of semipermeable membrane devices for sampling of organic contaminants in groundwater

Vrana

Paschke

et al. 2005

J. Environ. Monit.

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Lipid-filled semipermeable membrane devices (SPMDs) are receiving increasing attention as passive, in situ samplers for the assessment of environmental pollutant exposure. Although SPMDs have been successfully used in a variety of field studies in surface waters, only a few studies have addressed their characteristics as groundwater samplers. In this study, the performance of the SPMDs for monitoring organic contaminants in groundwater was evaluated in a pilot field application in an area severely contaminated by chemical waste, especially by chlorinated hydrocarbons. The spatial distribution of hydrophobic groundwater contaminants was assessed using a combination of passive sampling with SPMDs and non-target semiquantitative GC-MS analysis. More than 100 contaminants were identified and semiquantitatively determined in SPMD samples. Along the 6 field sites under investigation, a large concentration gradient was observed, which confirms a very limited mobility of hydrophobic substances in dissolved form in the aquifer. The in situ extraction potential of the SPMD is limited by groundwater flow, when the exchange volume of well water during an exposure is lower than the SPMD clearance volume for the analytes. This study demonstrates that SPMDs present a useful tool for sampling and analyzing of groundwater polluted with complex mixtures of hydrophobic chemicals and provides guidance for further development of passive sampling technology for groundwater.

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Section: Sampling Sitesmentioning

confidence: 99%

Performance of semipermeable membrane devices for sampling of organic contaminants in groundwater

Vrana

Paschke

et al. 2005

J. Environ. Monit.

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Flooding Induced Effects from the Mining Lake Goitzsche on Groundwater and Land‐use in the Bitterfeld Area

Wycisk

Neumann

Goßel

2005

Acta hydrochim. hydrobiol.

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The exceptional flooding event of the river Mulde in August 2002 led to an unexpected filling of the Goitzsche, an open‐pit lignite mining lake, within two days. Due to this exceptional situation, the groundwater table in the vicinity of the lake rose several meters in the area of Bitterfeld. Over the last 100 years, this region has been affected by a large‐scale contaminated aquifer of the former chemical industry complex Bitterfeld/Wolfen. Consequent to the rising groundwater level, the regional hydraulic situation and the groundwater flow direction changed entirely, as proven by hydraulic modelling results. Due to the heterogeneous aquifer conditions, the hydraulic importance was shown of a small scale channel‐fill at the bottom of the upper aquifer. This predominant geological structure evidently affects the groundwater flow direction indicated by the modelled path lines. The resulting pathways of the contaminants can be used for the identification of exposure routes related to areas of high ecological sensitivity. The monitoring of highly soluble groundwater contaminants (e.g. benzene, TCE, cis‐1,2‐DCE), close to the flooding event, shows (irregular patterns of increasing, as well as decreasing, concentration values of related groundwater contaminants. Until the present, no consistent regional pattern can be recorded in the shift of the distribution of the concentration induced by the flooding event. Local differences in the concentration values are obviously more related to small scale variations within the Quaternary aquifer in terms of hydraulic conductivity and higher residual concentration of the contaminated matrix sediments. The temporal effects of concentration values ca be traced back, by most of the organic compounds, to distinct observation wells within the monitored time span at the starting point before flooding.

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2002

Hydrological Processes

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Untitled

Cited by 13 publications

References 7 publications

Performance of semipermeable membrane devices for sampling of organic contaminants in groundwater

Performance of semipermeable membrane devices for sampling of organic contaminants in groundwater

Flooding Induced Effects from the Mining Lake Goitzsche on Groundwater and Land‐use in the Bitterfeld Area

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