Analysis of water quality parameters and pharmaceutical trace substances for different solid fractions in a combined sewer.

2022-09-16T10:30:17Z

Analysis of water quality parameters and pharmaceutical trace substances for different solid fractions in a combined sewer. Grüner, Stefan; Mayer, Robin Pascal; Krebs, Peter The wastewater composition was determined at a combined sewer of the city of Dresden using in situ UV-Vis measurement technology, referenced by wet-chemical analysis of collected samples and additionally a determination of pharmaceutical trace substances was carried out. This data set was used for the publication of the doctoral thesis "Multiparameteranalyse und pharmazeutische Spurenstoffuntersuchung im Mischwasserkanal" of Stefan Grüner. (link: https://nbn-resolving.org/urn:nbn:de:bsz:14-qucosa2-793815). The aim of this work was to extend the system understanding of wastewater composition beyond the standard analytical parameters by using in situ UV-Vis measurement techniques, enhanced by the determination of pharmaceutical trace substances for different solid fractions. Naming convention of lab parameters (the following additions were used for a more precise classification): '_total' - Analysis of the raw sample was performed. '_63' - Analysis of the fractionated sample from 0,45 to 63 µm was performed. '_mf' - Analysis of the membrane filteres sample (<=0,45 µm) was performed. Further information on pharmaceutical trace substance analysis: Values above 10000 ng/L and 20000 ng/L indicate that the limit of quantification of the measuring instrument was exceeded. A incorrect measurement could not be entirely excluded. It is recommended to treat the values as outliers and exclude them from evaluations. The determination of measured values for levetiracetam was affected by a high degree of uncertainty. This must be taken into account when carrying out evaluations for this parameter. PhD related information: The 'mp'-values were not used in PhD for the data sets for calibration and validation using linear regression. Since they are the wet chemical analysis results of the individual samples already considered. Values that where treated as outliers and not used for evaluation within PhD: CODmf: 308 [mg/L] (2018-03-28 07:15:00 CEST), Pregabalin: 37,66 [ng/L] (2019-10-07 21:00:30 CEST). All pharamceutical concentrations below the threeshold of measuring device (tagged with '<') where treated as '0' within PhD. The determination of measured values for levetiracetam was affected by a high degree of uncertainty. Within the doctoral thesis, substances ciprofloxacin and levofloxacin were not evaluated, due to the limited data base.

analysis data, flow data, rainfall data

Analysis of water quality parameters and pharmaceutical trace substances for different solid fractions in a combined sewer.