Welcome to UrbanLab.
We do analytical chemistry.
We present a programmable device—scanning pH-meter—that can automatically generate different types of pH ramps/waveforms in a solution. It can be used to explore reversibility of protein folding. [read more]
Fizzy extraction (FE) is an extraction technique that extracts volatile organic compounds (VOCs) from liquid matrices using pressure-induced effervescence. We coupled FE with an atmospheric pressure chemical ionization interface of a quadrupole time-of-flight mass spectrometry system to perform analysis of VOCs present in whiskeys. The resulting method was applied in analysis of 40 whiskeys originating from different countries or distilleries. The VOC profiles were used to characterize the whiskeys’ quality and age. [read more]
We have developed an analytical system incorporating data acquisition by an ion-mobility spectrometer, data transmission, centralized data analysis, and visualization in real time. [read more]
To carry out simultaneous monitoring of analytes with different ionogenic moieties by electrospray ionization mass spectrometry, a rapid acid/base switching system was developed. The system was further coupled with flow injection analysis and liquid chromatography mass spectrometry. The two variants enable detection of separated analytes immediately after alternating addition of acid and base. [read more]
We demonstrate low-frequency-sound-modulated electrospray ionization for analysis of biomolecules. By using a low-frequency (50–350 Hz) sound, it is possible to deflect electrospray microdroplets toward the mass spectrometer’s orifice. [read more]
A portable platform for analysis of volatiles in liquid samples is disclosed. It is based on hyphenation of fizzy extraction and ion-mobility spectrometry. [read more]
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