Voltammetric analysis using a self-renewable non-mercury electrode

P Surmann, H Zeyat - Analytical and bioanalytical chemistry, 2005 - Springer
Galinstan is a new kind of electrode material and the galinstan electrode is a promising
alternative to the commonly used mercury electrodes. The eutectic mixture of gallium, indium and …

A small-scale method for quantitation of carotenoids in bacteria and yeasts

P Kaiser, P Surmann, G Vallentin… - Journal of microbiological …, 2007 - Elsevier
Microbial carotenoids are difficult to extract because of their embedding into a compact matrix
and prominent sensitivity to degradation. Especially for carotenoid analysis of bacteria and …

LC–MS method for screening unknown microbial carotenoids and isoprenoid quinones

P Kaiser, R Geyer, P Surmann, H Fuhrmann - Journal of microbiological …, 2012 - Elsevier
The structure of secondary metabolites from microorganisms provides a useful tool for microbial
characterization and chemotaxonomic classification. Microbial isoprenoid quinones, for …

Anodic stripping voltammetry with galinstan as working electrode

P Surmann, H Channaa - Electroanalysis, 2015 - Wiley Online Library
The liquid alloy galinstan is used to determine low concentrations in microgram per liter level
of trace metals like copper, cadmium, lead, bismuth, antimony and thallium using anodic …

The fate of silicone oil during heat-curing glass siliconization-changes in molecular parameters analyzed by size exclusion and high temperature gas chromatography

T Mundry, T Schurreit, P Surmann - PDA Journal of Pharmaceutical …, 2000 - journal.pda.org
The siliconization of pharmaceutical glass containers, usually for parenteral formulations, is
performed in a so-called heat-curing process using diluted aqueous emulsions of medical …

Carbon electrodes in amine analysis: Effect of chemically modified carbon surfaces on signal quality and reproducibility

P Surmann, B Peter - Electroanalysis, 1996 - Wiley Online Library
The preparation of chemically modified graphite electrodes by various chemical treatments
is described. These electrodes were tested with chlorpromazine, cyclopiroxolamine, …

Investigation into electrochemical pretreatment of carbon fiber electrodes for the analysis of bamipine and imipramine

P Surmann, B Peter - Electroanalysis, 1996 - Wiley Online Library
The influence of the parameters of electrochemical pretreatment of carbon fiber electrodes
on the differential pulse voltammetric response of bamipine and imipramine is described. …

Mobile phase additives for enhancing the chromatographic performance of astaxanthin on nonendcapped polymeric C30‐bonded stationary phases

P Kaiser, P Surmann… - Journal of separation …, 2009 - Wiley Online Library
Astaxanthin shows peak deformation and reduced peak area response when eluted with
methanol and methyl tert‐butyl ether on nonendcapped polymeric C 30 ‐bonded HPLC phases…

[PDF][PDF] Development of a systematic toxicological screening method using an automated online-SPE-LC-QqTOF system (XLC-QqTOF)

C Köhler, T Grobosch, T Binscheck, P Surmann - Toxichem Krimtech, 2011 - gtfch.org
1 Institute of Toxicology-Clinical Toxicology and Poison Information Centre, BBGes, Oranienburger
Str. 285, 13437 Berlin, Germany 2 Department of Pharmaceutical Chemistry, Institute …

Bivoltametric titrations using electrodes with innovative geometry

P Surmann, B Peter, C Stark - Fresenius' journal of analytical chemistry, 1996 - Springer
Electrodes with different surface areas were investigated for the determination of reversible,
quasireversible, irreversible or electroinactive substrates. Two kinds of electrodes were …