Behaviour of arsenic and selenium in an ICP-QMS with collision and reaction interface

Interference standard applied to sulfur determination in biodiesel microemulsions by ICP-QMS

“…16,18,19 Collision and reaction interface (CRI), a different approach for reducing interfering polyatomic ions, is based on introduction of reaction/collision gases through cones either at the plasma region or the expansion zone located in the vacuum region. 20,21 According to Pereira et al, 22 the H 2 gas introduction through the skimmer cone was efficient to reduce spectral interferences on arsenic determination, however, an intense loss of signal intensity was observed.…”

Determination of Elemental Impurities in Acyclovir Ointment and Raw Materials Using Microwave Acid Digestion (MW-AD) and ICP-MS

“…In general, recoveries were not improved when KED mode was employed; indeed, in some cases the recovery values decreased, as in the case of 52 Cr + or 75 As + , which can be explained by the fact that helium gas defocuses the ion beams, due to many collisions which compromises the sensitivity and may also compromise the accuracy of the method. 15,29 , respectively. Table 6 shows the results obtained for the real medicine samples.…”

“…However, the accuracies which some isotopes are determined may be compromised by spectral and non-spectral interferences. [12][13][14] Different strategies have been employed to reduce such spectral interferences, including the use of a collision and reaction interface (CRI), 15 internal standards, 16 mathematical correction equations, 17 dynamic reaction cells (DRC), 18 and kinetic energy discrimination (KED). 19 The aim of this study was to optimize a microwave acid digestion (MW-AD) procedure for simultaneous determination of As, Cu, Cr, Ni, Pb and V by ICP-MS employing the standard mode, which allows the ICP-MS to be operated with the cell turned off, and second ICP-MS determination method evaluated was the KED mode, in acyclovir ointment and their manufacturer products disodium edetate, acyclovir API, non-ionic emulsifying wax, and methylparaben.…”

Determination of Selenium in Bovine Semen by ICP-MS Using Formic Acid for Sample Preparation

“…It may also be noticed that the presence of carbon in the argon plasma significantly improves the sensitivity of elements with high ionization energy, such as As and Se, due to charge transfer reactions. [16][17][18][19][20] Considering the formation of polyatomic ions, from the sample or plasma itself, Se determination is affected by interfering polyatomic ions, such as 40 Ar 2 + or 12 C 35 Cl 2 + , and the effects of these ions may be overcome by using strategies, such as selection of another isotope, use of mathematical correction, cool plasma or tailored devices for promoting reactions and/or collisions by gases introduction, for instance, H 2 , He, O 2 , and NH 3 . [21][22][23] In this study, diluted formic acid solution was used to solubilize samples of bovine semen aiming Se determination by ICP-MS.…”