Differences in the evaluation of soil phosphorus status by three soil tests (Mehlich 3, extraction with NH4-acetate and water extraction) were tested on 63 agricultural soils with different agrochemical characteristics from the territory of the Czech Republic. Differences between the colorimetric determination of phosphorus and ICP technique were studied. The median of the values of phosphorus ...

Biosensors need to meet the rising food industry demand for sensitive, selective, safe, and fast safety quality control. Disposable colorimetric sensors based on gold nanoparticles (AuNPs) localized surface plasmon resonance are low-cost easy-to-perform devices intended rapid point-of-need measurements. Recent studies demonstrate various facile versatile AuNPs-based analytical platforms detecti...