scholarly journals Determination of Trace Metal (Mn, Fe, Ni, Cu, Zn, Co, Cd and Pb) Concentrations in Seawater Using Single Quadrupole ICP-MS: A Comparison between Offline and Online Preconcentration Setups

Minerals ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 1289
Author(s):  
Saumik Samanta ◽  
Ryan Cloete ◽  
Jean Loock ◽  
Riana Rossouw ◽  
Alakendra N. Roychoudhury
Keyword(s):  
Inductively Coupled Plasma ◽  
Limit Of Detection ◽  
Accurate Determination ◽  
Cost Effective ◽  
Dissolved Metals ◽  
Inductively Coupled ◽  
Icp Ms ◽  
Polyatomic Interferences ◽  
Pre Treatment

The quantification of dissolved metals in seawater requires pre-treatment before the measurement can be done, posing a risk of contamination, and requiring a time-consuming procedure. Despite the development of automated preconcentration units and sophisticated instruments, the entire process often introduces inaccuracies in quantification, especially for low-metal seawaters. This study presents a robust method for measuring dissolved metals from seawater accurately and precisely using a seaFAST and quadrupole Inductively Coupled Plasma Mass Spectrometer (ICPMS), employed in both offline (2016–2018) and online (2020–2021) setups. The proposed method shows data processing, including the re-calculation of metals after eliminating the instrumental signals caused by polyatomic interferences. Here, we report the blank concentration of Fe below 0.02 nmol kg−1, somewhat lower values than that have been previously reported using high-resolution and triple-quad ICPMS. The method allows for the accurate determination of Cd and Fe concentrations in low-metal seawaters, such as GEOTRACES GSP, using a cost-effective quadrupole ICPMS (Cdconsensus: 2 ± 2 pmol kg−1, Cdmeasured: 0.99 ± 0.35 pmol kg−1; Feconsensus: 0.16 ± 0.05 nmol kg−1, Femeasured: 0.21 ± 0.03 nmol kg−1). Between two setups, online yields marginally lower blank values for metals based on short-term analysis. However, the limit of detection is comparable between the two, supporting optimal instrumental sensitivity of the ICPMS over 4+ years of analysis.

Reducing Polyatomic Interferences in the ICP-MS Determination of Chromium and Vanadium in Biofluids and Tissues

1998 ◽  
Vol 52 (2) ◽  
pp. 205-211 ◽  
Author(s):  
Antoaneta Krushevska ◽  
Shahida Waheed ◽  
Joaquim Nóbrega ◽  
Dulasiri Amarisiriwardena ◽  
Ramon M. Barnes
Keyword(s):  
Inductively Coupled Plasma ◽  
Standard Reference Materials ◽  
Moderate Pressure ◽  
Acid Digestion ◽  
Quadrupole Mass ◽  
Inductively Coupled ◽  
Microwave Sample Preparation ◽  
Icp Ms ◽  
Polyatomic Interferences

The suitability of inductively coupled plasma quadrupole mass spectrometry (ICP-MS) for the determination of Cr and V in biofluids and tissues has been studied. High-pressure thermal and moderate-pressure microwave sample preparation with vapor-phase acid digestion successfully minimized blanks and carbon and chloride interferences. The remaining ArC+ interferences on 52Cr were corrected mathematically. Analysis of standard reference materials verified the accuracy of the method.

Accurate determination of Zn in geological and cosmochemical rock samples by isotope dilution inductively coupled plasma mass spectrometry

2015 ◽  
Vol 30 (2) ◽  
pp. 506-514 ◽  
Author(s):  
Rahat Khan ◽  
Yuta Yokozuka ◽  
Saki Terai ◽  
Naoki Shirai ◽  
Mitsuru Ebihara
Keyword(s):  
Mass Spectrometry ◽  
Isotope Dilution ◽  
Inductively Coupled Plasma ◽  
Accurate Determination ◽  
Rock Samples ◽  
Inductively Coupled ◽  
Icp Ms ◽  
Plasma Mass Spectrometry

Inductively coupled plasma mass spectrometry (ICP-MS) procedures with isotope dilution were established for the accurate determination of trace Zn (in the level of 10−4to 10−5g g−1) in several tens of mg of geological and cosmochemical rock samples.

Simultaneous Analysis of Iodine and Bromine Species in Infant Formula using HPLC-ICP-MS

2019 ◽  
Vol 102 (4) ◽  
pp. 1199-1204 ◽  
Author(s):  
Jenny Nelson ◽  
Lawrence Pacquette ◽  
Shuofei Dong ◽  
Michiko Yamanaka
Keyword(s):  
Infant Formula ◽  
Inductively Coupled Plasma ◽  
Accurate Determination ◽  
Simultaneous Analysis ◽  
Triple Quadrupole ◽  
Inductively Coupled ◽  
Low Concentrations ◽  
Icp Ms ◽  
Halogen Species

Abstract Background: A fast and sensitive method for the simultaneous analysis of iodine and bromine species in infant formula was developed using HPLC–inductively coupled plasma–MS (HPLC-ICP-MS). Method: To determine the four halogen species [iodide (I−), iodate <inline-formula><mml:math display="inline"><mml:mrow><mml:mo>(</mml:mo><mml:mrow><mml:msubsup><mml:mrow><mml:mi mathvariant="normal">IO</mml:mi></mml:mrow><mml:mn>3</mml:mn><mml:mo>−</mml:mo></mml:msubsup></mml:mrow><mml:mo>)</mml:mo></mml:mrow></mml:math></inline-formula>, bromide (Br−), and bromate <inline-formula><mml:math display="inline"><mml:mrow><mml:mo>(</mml:mo><mml:mrow><mml:msubsup><mml:mrow><mml:mi mathvariant="normal">BrO</mml:mi></mml:mrow><mml:mn>3</mml:mn><mml:mo>−</mml:mo></mml:msubsup></mml:mrow><mml:mo>)</mml:mo></mml:mrow></mml:math></inline-formula>] in a milk-based Standard Reference Material and four commercially available infant formula products. Results: The four halogen species were baseline separated in less than 6.5 min using an anion exchange resin column and 5.0 mM NaH2PO4 / 15.0 mM Na2SO4 / 5.0 mM EDTA (pH 7.0) mobile phase. Following separation, the halogen species were detected by measuring m/z 79 for Br and m/z 127 for I using a triple quadrupole–ICP-MS. The instrument was operated in single quadrupole mode with helium cell gas. Excellent linearity (R = 0.9999 or better) was obtained for all four species with calibration standards ranging from 0 to 100 ppb. The LOD for I−, <inline-formula><mml:math display="inline"><mml:msubsup><mml:mrow><mml:mi mathvariant="normal">IO</mml:mi></mml:mrow><mml:mn>3</mml:mn><mml:mo>−</mml:mo></mml:msubsup></mml:math></inline-formula>, Br−, and <inline-formula><mml:math display="inline"><mml:msubsup><mml:mrow><mml:mi mathvariant="normal">BrO</mml:mi></mml:mrow><mml:mn>3</mml:mn><mml:mo>−</mml:mo></mml:msubsup></mml:math></inline-formula> were all less than 0.67 μg/kg. To test the suitability of the method for the accurate determination of low concentrations of the four species in infant formula samples, a spike recovery test was carried out at 20 and 40 μg/kg into the diluted infant formula samples. Conclusions: Total elemental determinations of iodine and bromine were also performed using the triple quadrupole–ICP-MS without HPLC.

scholarly journals Determination of Metal Impurities in Carbon Nanotubes Sampled Using Surface Wipes

2016 ◽  
Vol 2016 ◽  
pp. 1-10 ◽  
Author(s):  
Mary-Luyza Avramescu ◽  
Pat E. Rasmussen ◽  
Marc Chénier
Keyword(s):  
Carbon Nanotubes ◽  
Inductively Coupled Plasma ◽  
Microwave Digestion ◽  
Cost Effective ◽  
Inductively Coupled ◽  
Metal Impurities ◽  
Wipe Sampling ◽  
Icp Ms ◽  
Plasma Mass Spectrometry

Residual metal impurities in carbon nanotubes (CNTs) provide a means to distinguish CNT from non-CNT sources of elemental carbon in environmental samples. A practical and cost-effective analytical approach is needed to support routine surface monitoring of CNT metal tracers using wipe sampling. Wipe sampling for CNT metal tracers is considered a qualitative indicator of the presence of CNTs, not a quantitative exposure metric. In this study, two digestion approaches (microwave-assisted nitric acid/H2O2 digestion and ultrasonic nitric/HF acid digestion) in conjunction with Inductively Coupled Plasma Mass Spectrometry (ICP-MS) determination were evaluated for their ability to extract metal impurities from CNT particles captured on wipe substrates. Aliquots of different carbon nanotubes (including NIST 2483 single-wall CNT) with and without GhostWipes™ (ASTM E-1792 compliant) were used to compare the performance of the digestion methods. The microwave digestion method accommodated the bulky wipe sample and also eliminated potential ICP-MS signal interferences related to incomplete digestion. Although quantitative recoveries requiring lengthy multistep digestion protocols may be necessary in other applications, the near-total recoveries achieved in the present study for CNT catalyst elements were adequate for identifying surface contamination of CNTs in the workplace using wipe sampling.

Determination of Heavy Metals in Rhizomes of Alpinia galanga by Inductively Coupled Plasma Mass Spectrometry

2011 ◽  
Vol 486 ◽  
pp. 143-146 ◽  
Author(s):  
Chutima Limmatvapirat ◽  
Thawatchai Phaechamud ◽  
Juree Charoenteeraboon
Keyword(s):  
Mass Spectrometry ◽  
Heavy Metals ◽  
Inductively Coupled Plasma ◽  
Limit Of Detection ◽  
Acid Digestion ◽  
Alpinia Galanga ◽  
Inductively Coupled ◽  
Icp Ms ◽  
Plasma Mass Spectrometry

Galangal (Alpinia galanga(Linn.) Swartz.) is a popular spice in Thailand. Heavy metals, deriving from environmental pollution, might be contaminated in galangal rhizomes. Inductively coupled plasma mass spectrometry (ICP-MS) was a new and fast technique for ultratrace elemental analysis. The aim of this study was to validate a method for the determination of aluminium (Al), arsenic (As), cadmium (Cd), chromium (Cr), copper (Cu), iron (Fe), mercury (Hg), manganese (Mn), nickel (Ni), lead (Pb), and zinc (Zn) in galangal rhizomes according to the European standards (EU) using nitric acid digestion followed by ICP-MS. The parameters evaluated in the validation were recovery, repeatability and within-laboratory reproducibility, limit of detection (LOD), and limit of quantification (LOQ). This method was used to analyze the concentrations of 11 heavy metals in 15 samples of galangal rhizomes collected in Nakhon Pathom province. The metal concentrations varied considerably in the different sample sources. The concentration of heavy metals in the galangal samples arranged in increasing order was Hg < Cd < As < Cr < Pb < Ni < Cu < Zn < Fe < Mn < Al. An acid digestion and ICP-MS method was applicable to determination of 11 heavy metals in galangal rhizomes, based on the recovery analysis, cost, and time taken

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