Umweltgeochemische Charakterisierung der niedermolekularen organischen Fracht des Flußsystems Lippe
type: CreativeWork
description: Rivers are a sensitive and complex ecosystem hosting a diverse spectrum of organisms. Human activities have resulted in increasing river pollution due to input of organic contaminants into the river systems (anthropogenic input). The main emphasis of the present study is a comprehensive examination of anthropogenic and non-anthropogenic low-molecular weight organic compounds in a selected river system. The Lippe River (North Rhine-Westphalia, Germany) was chosen for this approach because it is located in a densely populated area with many diverse anthropogenic input sources, e.g. chemical industry, mining, agriculture and sewage. Four sample sets of river water and sediments were taken semi-annually at 19 sampling sites on a longitudinal section of the Lippe River. In order to identify a broad spectrum of organic compounds, non-discriminating methods were applied for extraction and analysis of the sample material. Gaschromatographic separation of the compounds and subsequent registration with FID/ECD as well as with MS allowed to identify a large number of low-molecular weight compounds with a high sensitivity. In this study the main emphasis was put on the investigation of the water samples. More than 100 dissolved organic compounds were identified which ranged from nonpolar constituents like aliphatic hydrocarbons to polar constituents like carboxylic (fatty) acids and phenols. Most of the organic compounds identified in Lippe River water could be attributed to anthropogenic input. Many of these anthropogenic compounds are by-products of industrial synthesis or are used as plasticizers, flame retardants, pharmaceutical drugs or synthetic fragrances. Using suitable molecular markers, effluents of sewage treatment plants were determined as the main input source for organic pollution of the Lippe River system. One major goal of this study was to investigate the organic pollution of the Lippe River on a quantitative basis. To this end 26 anthropogenic compounds of int…
abstract: Rivers are a sensitive and complex ecosystem hosting a diverse spectrum of organisms. Human activities have resulted in increasing river pollution due to input of organic contaminants into the river systems (anthropogenic input). The main emphasis of the present study is a comprehensive examination of anthropogenic and non-anthropogenic low-molecular weight organic compounds in a selected river system. The Lippe River (North Rhine-Westphalia, Germany) was chosen for this approach because it is located in a densely populated area with many diverse anthropogenic input sources, e.g. chemical industry, mining, agriculture and sewage. Four sample sets of river water and sediments were taken semi-annually at 19 sampling sites on a longitudinal section of the Lippe River. In order to identify a broad spectrum of organic compounds, non-discriminating methods were applied for extraction and analysis of the sample material. Gaschromatographic separation of the compounds and subsequent registration with FID/ECD as well as with MS allowed to identify a large number of low-molecular weight compounds with a high sensitivity. In this study the main emphasis was put on the investigation of the water samples. More than 100 dissolved organic compounds were identified which ranged from nonpolar constituents like aliphatic hydrocarbons to polar constituents like carboxylic (fatty) acids and phenols. Most of the organic compounds identified in Lippe River water could be attributed to anthropogenic input. Many of these anthropogenic compounds are by-products of industrial synthesis or are used as plasticizers, flame retardants, pharmaceutical drugs or synthetic fragrances. Using suitable molecular markers, effluents of sewage treatment plants were determined as the main input source for organic pollution of the Lippe River system. One major goal of this study was to investigate the organic pollution of the Lippe River on a quantitative basis. To this end 26 anthropogenic compounds of int…
author: Dsikowitzky, Larissa
language: ger
keywords: info:eu-repo/classification/ddc/550, Lippe <Fluss>, Schadstoffbelastung, Niedermolekulare Verbindungen, Organische Verbindungen, Umweltgeochemie, Geowissenschaften, GC-MS, Screening Untersuchungen, niedermolekulare organische Verbindungen, organische Schadstoffe, Flußsysteme
date published: 2002
date modified: 2026-07-30T19:42:39Z
provider: RWTH Aachen University
publisher: Networked Digital Library of Theses and Dissertations
type: WebPage
source organization: Publikationsserver der RWTH Aachen University