On-line preconcentration and volatilization of iodine for inductively coupled plasma atomic emission spectrometry

Multi-element Analysis of Food by Microwave Digestion and Inductively Coupled Plasma-Atomic Emission Spectrometry

“…The spectrometer, described in detail by Dolan et al (1991), was equipped with a 2.5 kW, 27 MHz crystal-controlled radio frequency generator (Henry Electronics, Los Angeles, CA, U.S.A.) and an automatic matching network (Montaser et al, 1989). Analytical solutions were introduced by an ultrasonic nebulizer (Model U5000AT, CETAC Technologies Inc., Omaha, NE, U.S.A.).…”

Determination of High Iodine Levels by ICP-OES after Separation from Excess Phosphate by Co-precipitation

“…Because in biological materials, always much more P than I has to be expected, a separation seems mandatory. Online separation done by oxidation of iodide containing sample solutions with nitrite in dilute sulfuric acid to yield the volatile element may enrich the signal 33-fold [23] and permit the use of ICP-OES at lower iodine levels [17,20,24,25]. In a routine lab like this, however, change of the ICP-configuration might block the equipment too long, and possibly necessitate a re-validation of the routine configuration, the latter which ensures the main source of income.…”

Analysis of Iodine-129 in aqueous samples by inductively coupled plasma-mass spectrometry

“…The pH of the sample is adjusted to 6.4 -6.6 with NaOH and the Iodine concentrated on 2.0 mL of Bio-Rad AG 1X8, C1-form anionexchange resin. 30 mL of 4M HNO3 was used to elute the Iodine from the resin (Dolan, et al (1991). The 4M HNO3 eluant is introduced directly into the ICP-MS for the analysis.…”