The parahydrogen-induced polarisation (PHIP) NMR signal enhancement technique is used to study H2 addition to Vaska’s complex (trans-[IrCl(CO)(PPh3)2]) and a mixture of Vaska’s complex derivatives with benchtop (1 T) NMR detection.
A benchtop NMR instrument in combination with spectral hard modeling enabled monitoring and subsequent kinetic fitting of a chlorination reaction. Different modes were investigated, an NMR tube, re-circulating batch and single pass continuous flow.
This review discusses developments in elemental mass spectrometry, atomic absorption, emission and fluorescence, XRF and LIBS, as applied to the analysis of specimens of clinical interest, foods and beverages. Sample preparation procedures and quality assurance are also included.
On-line reaction monitoring of hydrogenation reactions of oxygen-sensitive organometallic complexes is done via a 31P benchtop NMR spectrometer using the Multi-Resonance Sensitive Homogeneous And Resolved PEaks in Real time (MR-SHARPER) sequence.
Graphical abstract highlights the nutritional value of pulses and key adulteration types. It summarizes traditional and advanced detection methods, emphasizing computer vision and machine learning for rapid, non-destructive quality assessment.