Minimization of interferences in inductively coupled plasma mass spectrometry using on-line preconcentration

Heithmar, Edward M.; Hinners, Thomas A.; Rowan, John T.; Riviello, J. M.

doi:10.1021/ac00207a018

Cited by 90 publications

(27 citation statements)

References 34 publications

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“…2A). In natural waters and wastewaters, colloidal and low‐molecular‐weight organic compounds often sequester analytes and must be destroyed by appropriate treatment prior to analysis [5,17–20]. Our experimental results clearly document the necessity of using UV irradiation as a digestion procedure prior to sample preconcentration (Fig.…”

Section: Resultssupporting

confidence: 54%

Silver concentrations in Colorado, USA, watersheds using improved methodology

Wen

Santschi

Gill

et al. 2002

Enviro Toxic and Chemistry

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River water samples were collected at five sites in the state of Colorado, USA, to assess the impact of municipal and industrial discharges on Ag concentrations and speciation in surface waters. Samples were collected and analyzed for total (unfiltered collections), filtered (0.1 and 0.4 microm), particulate (> or = 0.45 microm), and colloidal Ag (3 kDa-0.1 m) using ultraclean protocols. A series of laboratory experiments were conducted to assess bias from sample storage, digestion, and preconcentration protocols. In general, upstream unfiltered and particulate Ag concentrations fell within a fairly narrow range, 3.1 to 21 ng/L and 0.2 to 1.7 microg/g, respectively. Downstream unfiltered and particulate Ag concentrations showed a more broad range, 2.8 to 1,110 ng/L and 0.5 to 104 microg/g, respectively, and reflected attenuated impacts of Ag-laden discharge effluents. However, Ag concentrations in the 0.1-microm filter-passing fraction 0.8 to 1.2 km downstream from major treatment plant effluents were all below the chronic silver criteria. On average, more than 60% of the 0.1-microm filter-passing Ag was associated with colloidal macromolecular organic matter. Silver concentrations in colloids (microg/g) were, on average, the same as those in suspended particulate matter. The percentage abundance of colloidal Ag was similar to that of dissolved organic carbon, suggesting that strong Ag binding ligands exist in both the colloidal and the particle size fractions, as these macromolecular ligands likely play a major role in Ag speciation.

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Section: Resultssupporting

confidence: 54%

Silver concentrations in Colorado, USA, watersheds using improved methodology

Wen

Santschi

Gill

et al. 2002

Enviro Toxic and Chemistry

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“…9,10 Since FIA, such as an on-line column system, has abilities to separate analytes from matrix elements and concentrate them, the technique serves for the determination of low-concentration elements, including a radionuclides, in environmental samples. 10,11 Recently, the on-line separation technique has been widely used in the field of environmental analysis because of the following advantages: reducing contamination caused by a closed system; a small volume of reagents and a small amount of sample; column reusability.…”

Section: Introductionmentioning

confidence: 99%

Development of Rapid Plutonium Analysis for Environmental Samples by Isotope Dilution/Inductively Coupled Plasma Mass Spectrometry with On-line Column

Ohtsuka

Takaku

Kimura³

et al. 2005

ANAL. SCI.

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This paper describes our development of a rapid on-line column/ID-ICP-MS technique for the analysis of plutonium (Pu) in environmental samples using an UTEVA ® extraction chromatograph resin (UTEVA resin) column. It took only 40 min to separate and measure Pu in the sample solution, including the time for conditioning the resin column for the next analysis. In our method, Pu in a 3 M nitric acid solution was fed to the UTEVA resin, and then eluted from the resin by reducing Pu to Pu(III) with 3 M nitric acid mixed with 0.01 M ascorbic acid after washing the resin. The outflow from the resin column was directly introduced to an ICP-MS system. The low concentration of ascorbic acid and the small volume of the eluting solution (0.6 mL) made successive stable analysis possible without any skimmer cone clogging. The chemical recovery of Pu during column operation was 70%, and typical lower detection limits for 239 Pu, 240 Pu and 242 Pu were 9.2, 4.3 and 7.5 fg (21, 36 and 1.1 µBq), respectively. We analyzed five international standard materials for Pu, and obtained good results.

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“…Subsequently, these authors improved performance by eluting upstream the column [97]; in this way, they increased signals by a factor of 10-15 and throughput 20-75 times. Heithmar et al [99] achieved an LOD of 0.002 lg/L. Valdes-Hevia et al [100] applied this methodology to crystals and obtained an LOD of 20 lg/L and an RSD of 1.5%.…”

Section: Preconcentration By Flow-injection Column Separation (Fi-cpsmentioning

confidence: 99%

A comparative study of available procedures for cobalt sample preparation and introduction into atomic spectroscopic instruments

Mir

1998

Lab. Robotics Autom.

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Minimization of interferences in inductively coupled plasma mass spectrometry using on-line preconcentration

Cited by 90 publications

References 34 publications

Silver concentrations in Colorado, USA, watersheds using improved methodology

Silver concentrations in Colorado, USA, watersheds using improved methodology

Development of Rapid Plutonium Analysis for Environmental Samples by Isotope Dilution/Inductively Coupled Plasma Mass Spectrometry with On-line Column

A comparative study of available procedures for cobalt sample preparation and introduction into atomic spectroscopic instruments

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