TY - JOUR

T1 - Sources of nitrogen heterocyclic PAHs (N-HETs) along a riverine course

AU - Siemers, Anne-Kathrin

AU - Palm, Wolf-Ulrich

AU - Faubel, Christina

AU - Mänz, Jan Sebastian

AU - Steffen, Dieter

AU - Ruck, Wolfgang

N1 - Publisher Copyright: © 2017 Elsevier B.V.

PY - 2017/7/15

Y1 - 2017/7/15

N2 - For the first time the occurrence of 26 nitrogen heterocyclic polyaromatic hydrocarbons (N-HETs) and the antiepileptic drug carbamazepine (CBZ) as a marker for anthropogenic influence was determined in an entire river system and its influents. Besides the investigation of diurnal and annual variations in concentrations, dilution and load calculations, the aims were to facilitate transferability to other rivers by identifying sources of the different substances. To create a sufficient database over 180 aqueous samples from the River Fuhse (Lower Saxony, Germany), its catchment area, effluents of municipal and industrial wastewater treatment plants (WWTPs) and rainwater were analyzed. Typical substances found in background water samples and rain samples were quinoline and isoquinoline, whereas 1-/3-methylisoquinoline were traced back to an industrial WWTP. Due to similar concentration levels in the effluents of municipal WWTPs, their impact on the river correlated with their nominal loads. In municipal WWTP effluents CBZ (cmedian=1693ngL(-1)), 2-methylquinoline (cmedian=64ngL(-1)), and acridine (cmedian=62ngL(-1)) prevailed. Although the occurrence of N-HETs at contaminated sites is a widely discussed scientific topic, this study showed that the investigated site was a source with only small volumetric contribution to N-HET concentrations in the adjacent river. In total the River Fuhse discharges 20kga(-1) N-HETs and 21kga(-1) CBZ into the receiving river.

AB - For the first time the occurrence of 26 nitrogen heterocyclic polyaromatic hydrocarbons (N-HETs) and the antiepileptic drug carbamazepine (CBZ) as a marker for anthropogenic influence was determined in an entire river system and its influents. Besides the investigation of diurnal and annual variations in concentrations, dilution and load calculations, the aims were to facilitate transferability to other rivers by identifying sources of the different substances. To create a sufficient database over 180 aqueous samples from the River Fuhse (Lower Saxony, Germany), its catchment area, effluents of municipal and industrial wastewater treatment plants (WWTPs) and rainwater were analyzed. Typical substances found in background water samples and rain samples were quinoline and isoquinoline, whereas 1-/3-methylisoquinoline were traced back to an industrial WWTP. Due to similar concentration levels in the effluents of municipal WWTPs, their impact on the river correlated with their nominal loads. In municipal WWTP effluents CBZ (cmedian=1693ngL(-1)), 2-methylquinoline (cmedian=64ngL(-1)), and acridine (cmedian=62ngL(-1)) prevailed. Although the occurrence of N-HETs at contaminated sites is a widely discussed scientific topic, this study showed that the investigated site was a source with only small volumetric contribution to N-HET concentrations in the adjacent river. In total the River Fuhse discharges 20kga(-1) N-HETs and 21kga(-1) CBZ into the receiving river.

KW - Chemistry

KW - Azaarenes

KW - N-HET

KW - River water

KW - Sources

KW - Wastewater treatment plants

UR - http://www.scopus.com/inward/record.url?scp=85015040738&partnerID=8YFLogxK

UR - https://www.mendeley.com/catalogue/1d3f9ce2-3acf-377b-bf17-44b19ccc1835/

U2 - 10.1016/j.scitotenv.2017.03.036

DO - 10.1016/j.scitotenv.2017.03.036

M3 - Journal articles

C2 - 28301813

VL - 590-591

SP - 69

EP - 79

JO - The Science of The Total Environment

JF - The Science of The Total Environment

SN - 0048-9697

ER -