Elemental composition and origin of (polyatomic) ions in inductively coupled plasma mass spectrometry disclosed by means of isotope exchange experiments

Lanthanide phosphate interferences in actinide determination using inductively coupled plasma mass spectrometry

“…The linearity of the formation of lanthanide with concentration has not been examined but the intensities of the phosphates have been observed to vary substantially over time in spite of ''identical'' instrument settings. Taking this into account makes LaHPO 4 1 a possible explanation for the interference found by Gwiazda et al 7 Study of interference formation using H 2 18 O…”

“…A standard solution of 242 Pu (NIST SRM 4334G; National Institute of Standards and Technology, Gaithersburg, MD, USA) was used for optimising the instrument for Pu measurements. Water, 18 O min. 99 at% (Isotec, Miamisburg, OH, USA), was used for the isotope enriched study of the lanthanum phosphates formation.…”

“…In order to further confirm the formation of lanthanide phosphates, a solution of Pr (15.7 mg l À1 ) and HEDPA (0.1%) in 18 O enriched (99 at%) water was prepared. The resulting 16 O content of the solution was o2% of the total amount of oxygen.…”

“…4, together with that for a solution of Pr and HEDPA in water with natural oxygen isotopic composition. The relatively large peak from PrH 2 PO 4 1 in the regular water matrix has been divided into five different peaks in the H 2 18 O matrix. These peaks are at 0, 2, 4, 6 and 8 u higher than the original peak, which indicates the replacement of 0, 1, 2, 3 and 4 16 O atoms in the phosphate moiety with 18 O.…”

High resolution studies of the origins of polyatomic ions in inductively coupled plasma-mass spectrometry

“…In Fig. 4 [30,31,32]. Isopropanol (IPA) is a convenient additive to enhance the abundance of ions containing carbon for purposes of identification.…”