Liquid golds development

The development of the first true liquid gold formulations was largely driven by the need to produce cheaper decorative gold products. At the start of the nineteenth century, times were... 

Some of the most recent developments in liquid gold precursors involve the synthesis of water-soluble gold(I) mercaptides as reported by Bishop [24]. The mercaptide ligands in these compounds contains a water-solubilizing functional group, having the general formula... 

Elements such as As, Se and Te can be determined by AFS with hydride sample introduction into a flame or heated cell followed by atomization of the hydride. Mercury has been determined by cold-vapour AFS. A non-dispersive system for the determination of Hg in liquid and gas samples using AFS has been developed commercially (Fig. 6.4). Mercury ions in an aqueous solution are reduced to mercury using tin(II) chloride solution. The mercury vapour is continuously swept out of the solution by a carrier gas and fed to the fluorescence detector, where the fluorescence radiation is measured at 253.7 nm after excitation of the mercury vapour with a high-intensity mercury lamp (detection limit 0.9 ng I l). Gaseous mercury in gas samples (e.g. air) can be measured directly or after preconcentration on an absorber consisting of, for example, gold-coated sand. By heating the absorber, mercury is desorbed and transferred to the fluorescence detector. 

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