Untitled

Highly Effective Extraction of Iron(III) with 4-Isopropyltropolone in Nonpolar Solvents Containing 3,5-Dichlorophenol as a Synergist

“…The present Hipt-DCP system is a highly efficient and selective extraction system for iron(III), which has been successively applied to substoichiometric separation as well as substoichiometric isotope dilution mass spectrometry for trace iron(III). 21 1301 ANALYTICAL SCIENCES DECEMBER 2000, VOL. 16 …”

Substoichiometric Isotope Dilution Mass Spectrometry of Boron by the Ion-Pair Extraction with Halogenated Salicyl Alcohol Derivatives and a Quaternary Ammonium Salt

“…However, the difficulty of the accurate determination of the isotopic abundance of boron has been pointed out because of the interference from 12 C + 25,29,30 or the influence of co-existing ions like Na + 28 in the ICP-MS measurements. Substoichiometric isotope dilution mass spectrometry (SIDMS), which consists of substoichiometric separation of an element in question and only measurement of an proper isotope with a mass spectrometer, has several advantages, [31][32][33] i.e., (1) the quantitative recovery of the element is not required, (2) no calibration standards or curves are necessary, (3) measurement of isotopic abundance is not necessary, and (4) correction for the mass discrimination in the mass spectrometer is not necessary. Therefore, the analytical procedure in SIDMS is much more simple and rapid than that in general IDMS.…”