Determination of persistent tetracycline residues in soil fertilized with liquid manure by high-performance liquid chromatography with electrospray ionization tandem …

G Hamscher, S Sczesny, H Höper, H Nau - Analytical chemistry, 2002 - ACS Publications
… Prior to the extraction of soil, the dry weight was investigated as follows: 20 g of each soil …
Therefore, aliquots of 50 g of each sample were carefully mixed. The mean total organic …

Degradation and transformation of fluoroquinolones by microorganisms with special emphasis on ciprofloxacin

…, A Spielmeyer, H Zorn, G Hamscher - Applied microbiology and …, 2019 - Springer
… and Per, produced 48 additional metabolites to those identified in G. striatum cultures (Wetzstein
et al. 2006). In contrast to G. striatum, a greater variety of metabolites with modifications …

Different behavior of tetracyclines and sulfonamides in sandy soils after repeated fertilization with liquid manure

G Hamscher, HT Pawelzick, H Höper… - … and Chemistry: An …, 2005 - Wiley Online Library
… From 2000 to 2002, approximately 330 g tetracycline, 7 g chlortetracycline, 28 g sulfamethazine,
and 57 g sulfadiazine per hectare were transferred via liquid manure to the topsoil (0–…

Tetracyclines and tetracycline resistance in agricultural soils: microcosm and field studies

H Schmitt, K Stoob, G Hamscher, E Smit, W Seinen - Microbial ecology, 2006 - Springer
The influence of the use of antibiotics on the prevalence of resistance genes in the
environment is still poorly understood. We studied the diversity of tetracycline and sulfonamide …

Antibiotics in dust originating from a pig-fattening farm: a new source of health hazard for farmers?

G Hamscher, HT Pawelzick, S Sczesny… - Environmental …, 2003 - ehp.niehs.nih.gov
… , these field studies gave no proof of leaching of these compounds into deeper soil segments
or into groundwater because of the strong sorption of the drugs in topsoil (Hamscher et al. …

Degradation and elimination of various sulfonamides during anaerobic fermentation: a promising step on the way to sustainable pharmacy?

…, TK Kiffmeyer, J Tuerk, G Hamscher - … science & technology, 2009 - ACS Publications
… Only Penicillin G was degradable to a degree of 27% within 28 days. In contrast to those
findings, in sewage treatment plants sulfonamides are eliminated after an adaptation of the …

Selection of organic process and source indicator substances for the anthropogenically influenced water cycle

…, U Dünnbier, R Gnirß, B Haist-Gulde, G Hamscher… - Chemosphere, 2015 - Elsevier
… A PAC that primarily provides small pores is probably efficient for the adsorption of
benzotriazole, a comparably small molecule (119 g mol −1 ), while carbamazepine (236 g mol −1 ) …

Simultaneous determination of 14 sulfonamides and tetracyclines in biogas plants by liquid-liquid-extraction and liquid chromatography tandem mass spectrometry

A Spielmeyer, J Ahlborn, G Hamscher - Analytical and bioanalytical …, 2014 - Springer
… For the extraction of antibiotics, 1 g matrix was weighted into a 15 mL polypropylene (PP)
centrifuge tube (SuperClear TM , VWR, Darmstadt, Germany) and spiked with 100 μL mix …

Long-term monitoring of sulfonamide leaching from manure amended soil into groundwater

A Spielmeyer, H Höper, G Hamscher - Chemosphere, 2017 - Elsevier
Veterinary antibiotics such as sulfonamides are frequently applied in livestock farming
worldwide. Due to poor absorption in the animal gut and/or reversible metabolization …

Residue analysis of tetracyclines and their metabolites in eggs and in the environment by HPLC coupled with a microbiological assay and tandem mass spectrometry

S Sczesny, H Nau, G Hamscher - Journal of Agricultural and Food …, 2003 - ACS Publications
… Assay medium was prepared by dissolving 37 g of brain−heart broth (Merck, Darmstadt,
Germany) in 1 L of distilled water prepared in-house by a Milli-Q system (Millipore, Eschborn, …