ICP high resolution

Analysis of soluble Pd by ICP. A series of reactions was initiated according to the procedure described above. After 20 s, 1 min, 3 min or 1 h, the hot reaction mixture was passed quickly through a 0.45 pm syringe filter to remove solid BaCei cPd c03.x, then the solvent was removed under reduced pressure. A mixture of BaCei cPdx03. cand K2CO3 in IPA/H2O, heated at 80 °C for 1 h, was subjected to the same workup procedure. Each of the solid residues was suspended in 12 mL 10 M aqueous HCl. The mixtures were filtered to produce clear solutions for subsequent analysis on a Thermo Jarrell Ash (TJA) High Resolution ICP spectrometer. A ICP standard solution of Pd (Aldrich) was diluted to 10 ppm for use as the high standard. 

Gee and Bruland [953] used 61Ni, 65Cu, and 68Zn in waters collected in San Francisco Bay to trace the kinetics of nickel, copper, and zinc exchange between dissolved and particulate phases. The technique involved an organic ligand sequential extraction followed by analysis with high-resolution ICP-MS. 

Required precision. This will lead you to the instrument you need. Quadru-pole ICP-MS is easy to use, robust and relatively inexpensive. In general, these instruments permit good precision of isotopes ratio measurements ranging from 0.1 to 0.5%. Applying high-resolution ICP-MS precision in isotope ratio measurements can generally be improved by a factor of 5-10 (mainly because of the flat-topped peak shapes and fewer spectral overlaps obtained with these high-resolution instruments). Multicollector ICP-MS systems increase precision due to the collection of all isotopes of interest simultaneously in a multicollector array and so they provide an opportunity to measure the isotopic composition of many elements more accurately than other ICP-MS instruments. 

The high-resolution ICP-MS instruments are all based on a reverse Nier-Johnson geometry with an electrostatic and a magnetic analyzer [14,20]. The routinely observable resolution is between 3000 and 10 000 m/Am. This resolution is sufficient for the resolution of a number of molecular ion interferences such as ArO+ on 5<%e and ArCl+ on 75 As as prominent examples. Other molecular ion interferences are still not resolvable. 

S. Rauch, M. Motelica-Heino, G. M. Morrison, O. F. X. Donald, Critical assessment of platinum group element determination in road and urban river sediments using ultrasonic nebulization and high resolution ICP-MS, J. Anal. Atom. Spectrom., 15 (2000), 329 D 334. 

C. Siethoff, I. Feldmann, N. Jakubowski, M. Linscheid, Quantitative determination of DNA adducts using LC-ESI-MS and LC-high resolution ICP-MS, J. Mass... 

Determination of Cd, Pb and U were performed by magnetic sector high resolution ICP-MS. The lack of CRMs in a snow matrix did not allow for a direct check of the measurement accuracy, but reasonable confidence in the reliability of data was reached through the use of other analytical techniques, i.e., ETA AAS and DP-ASV. Mean concentrations were found to be (pg g ) 0.39 for Cd, 5.0 for Pb and 0.04 for U. 

Fig. 115. High-resolution ICP mass spectra from elements which suffer from Cl-induced spectral interferences in 0.4 M HCI (a) 20 ng/mL of V, resolution 5000, (b) 20 ng/mL of Cr, resolution 5800 and (c) 100 ng/mL of As, resolution 7500. (Reprinted with permission from Ref. [504].)...

Vanhaecke F., Moens L. and Dams R. (1997) Applicability of high-resolution ICP-mass spectrometry for isotope ratio measurements, Anal Chem 69 268-273. 

Nagaoka MH, Yamazaki T and Maitani T (2002) Binding patterns of vanadium ions with different valence states to human serum transferrin studied by HPLC/high-resolution ICP-MS. Biochem Biophys Res Commun 296 1207-1214. 

Speciation of airborne chromium also has been investigated. Alkaline extraction of polycarbonate membrane filters was used to leach chromium which was subsequently determined by CFAAS. The National Institute of Standards and Technology has a standard reference material (SRM) 2584 - Trace Elements in Indoor Dust. Chromium in this SRM was successfully determined using high-resolution ICP-MS (Yu et al. 

Peteucci F, Bocca B, Alimonti A and Caroli S (2000) Determination of Pd, Pt and Rh in airborne particulate and road dust by high-resolution ICP-MS a preliminary investigation of the emission from automotive catalysts in the urban area of Rome. J Anal At Spectrom 15 525-528. 

Okamoto M, Tsunamura A, Yamaguti Tand Ushikubo a (2001) Determination of tellurium in rain water by high resolution ICP-MS. Nippon dojyo hirogaku zaisshi 72 77—80. 

Yamasaki, S.-L, Tsumura, A., Takaku, Y., 1994. Ultratrace elements in terrestrial waters as determined by high-resolution ICP-MS. Microchem. J. 49, 305-318. 

Giebmann, U. and Greb, U. (1994) High resolution ICP-MS a new concept for elemental mass... 

Yamamoto, M., Syarbaini, K., Kofuji, K., Tsumura A., Komura, K., Ueno, K., and Assinder, D. J. 1995. Determination of low-level Tc-99 in environmental samples by high-resolution ICP-MS. J Radioan Nucl ChAr 197(1), 185-194. 

The use of CE coupled to high-resolution ICP-MS instruments has also been reported in the literature. It has been shown that Cd-MT complexes can be separated by CE and different metallic elements and sulfur can be simultaneously detected by using a high-resolution sector field (SF) ICP-MS detector operating at medium resolution to avoid polyatomic interferences that affect the determination of sulfur. 

ICP-MS is easily coupled with laser ablation sample introduction systems giving spatially resolved analyses (smallest spot sizes around 10 pm) with working detection limits of 1-10 mg kg High-resolution ICP-MS may be coupled with LA introduction systems to provide high spectral resolution with rapid scanning across the entire mass range. This is particularly important when analyzing small sample volumes such as fluid inclusions, where the entire sample is rapidly consumed. 

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