Separation of unsaturated organic compounds using silver–thiolate chromatographic material

Identification of double‐bond positions in isomeric alkenones from a lacustrine haptophyte

“…The silver(I)‐thiolate stationary phase used throughout this work (i.e. silver(I)‐mercaptopropyl) has a high selectivity for unsaturated compounds . Previously, silver‐ion chromatography has been used for separation of alkenones by degree of unsaturation; however, these methods were subjected to major instabilities in the silver‐loaded stationary phase (e.g.…”

Chromatography with silver nitrate: part 2

“…Figure 14 Aponte and Huang et al [113][114][115][116] have spent considerable effort developing solid supported silverthiolate and related chromatography materials (e.g. 252-257) (Figure 15), which have been observed to be highly efficient in the separation of alkane/alkene mixtures differing by a single double bond.…”

Argentation high performance liquid chromatography on-line coupled to gas chromatography for the analysis of monounsaturated polyolefin oligomers in packaging materials and foods

“…Second, a high load presupposes a strong eluent for elution which tends to leach silver ions and transfer these to GC. Leaching with dichloromethane was reported by [13]. Third, an eluent stronger than dichloromethane, such as MTBE or acetone, hinders the integration into the existing procedure for MOSH/MOAH analysis and would require a three-pump HPLC system.…”

“…Christie et al [12] described the preparation of silver-impregnated silica gel HPLC columns by conditioning from hexane to water, injecting several 1 ml portions of a 10% silver nitrate solution and reconditioning back to hexane. Aponte et al [13] packed columns with materials previously treated with various silver-containing components, such as silica gel modified with cyano and thiol functional groups, for the separation of mono-, di-, tri-and tetraenes as well as aromatics. Fractions were collected off-line and analyzed by GC coupled to mass spectrometry (MS).…”