Determination of metals in mixed hydrochloric and perchloric acids by forced-flow anion exchange chromatography

Isothiocyanatopentaaquochromium(III) as a reagent for the separation and identification of nanogram quantities of mercury(I), mercury(II), and methylmercury(II)

“…shortened. Fritz and Seymour (16) obtained quantitative recovery of Hg2+ on anion exchange resin using a 1M HC1-5AÍ HCIO4 eluent using high speed techniques and loading milligram quantities of mercury. The other possible explanation is that the remaining Hg2+ is lost under the tail of the peak.…”

Determination of gold, palladium, and platinum at the parts-per-billion level by ion chromatography

“…The supersonic molecular beam method is a powerful technique for preparing ultracold molecules for spectroscopy (1)(2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15). The visible-ultraviolet absorption spectrum of most aromatic hydrocarbons at room temperature is a structureless contour composed of a large number of populated vibrational and rotational states.…”

“…The unique property of multiphoton ionization compared to other methods of ionization used in mass spectrometry is the wavelength selectivity possible with this technique (4,5,17,20,21,25,27). The process used in this study is resonant two-photon ionization where one photon excites a molecule to an intermediate electronic state and a second photon pumps the molecule above its ionization potential (IP) resulting in ionization.…”

“…In several previous reports, this problem was circumvented by the use of a chromatograph constructed entirely of glass, plastic, or other noncorroding materials (3,4). The investigators were able to use more dilute acid eluants by using a lower capacity ion exchange resin and adding perchlorate to the eluant (5). Perchlorate is strongly retained on anion exchange resins and acts as a powerful displacer.…”

Separation of metal ions using a hexylthioglycolate resin

“…Instrumentation. The liquid chromatograph has already been described (21,22). However, modifications have been made on the instrument.…”