Determination of lead isotope ratios in crude oils with Q-ICP/MS

Differentiation Among Brazilian Wine Regions Based on Lead Isotopic Data

“…The lead isotope ratio depends on factors such as uranium and thorium content in the soil, weathering processes and original rock age, which provide a fingerprint used for different forensic and archeological purposes. 2,[5][6][7] Inductively coupled plasma mass spectrometry (ICP-MS) has been used for lead isotopic composition determination in several types of samples, including wine. 1,3,[7][8][9][10][11] This is a robust and practical method of measuring lead isotope ratios, but it is necessary to correct for instrumental mass discrimination phenomena in order to improve the accuracies of isotopic ratio measurements.…”

“…2,[5][6][7] Inductively coupled plasma mass spectrometry (ICP-MS) has been used for lead isotopic composition determination in several types of samples, including wine. 1,3,[7][8][9][10][11] This is a robust and practical method of measuring lead isotope ratios, but it is necessary to correct for instrumental mass discrimination phenomena in order to improve the accuracies of isotopic ratio measurements. Several methodologies are used for mass bias correction such as isotope reference materials or external spiking with a non-interference element presenting a well-established isotope ratio that is invariant in nature and exhibits an atomic mass similar to that of the element of interest.…”

Direct lead isotopic analysis of bioethanol by means of multi-collector ICP-mass spectrometry with a total consumption sample introduction system

“…16,[19][20][21][22] High-precision isotopic analysis of Pb by multi-collector ICP-MS is used for provenancing (determination of the geographical origin) purposes. [22][23][24][25] Lead isotope ratios have been determined in fossil fuels and other organic samples 26,27 using the conventional methodology, involving off-line chromatographic isolation of Pb from the sample matrix. However, to the best of the authors' knowledge, so far, isotopic analysis has not been performed for biofuels in general, and bioethanol in particular.…”

Trace Element Determination by ICP‐AES and ICP‐MS: Developments and Applications Reported During 2006 and 2007

“…Simultaneous introduction of organic solutions and aqueous solutions into an ICP-MS plasma was achieved using a dual inlet torch (Dreyfus et al 2007). The two inlets on the torch comprised the conventional inlet, in line with the torch injector point and used for the introduction of crude oils diluted in xylene through a microflow nebuliser and chilled double pass spray chamber, and a second port at an angle for introduction of a dry aqueous aerosol from a USN.…”