Sources of mass bias and isotope ratio variation in multi-collector ICP-MS: optimization of instrumental parameters based on experimental observations

Andrén, Henrik; Rodushkin, Ilia; Stenberg, Anna; Malinovsky, Dmitry; Baxter, Douglas C.

doi:10.1039/b403938f

Cited by 101 publications

(86 citation statements)

References 43 publications

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“…The space charge effect is inuenced by the density and composition of the ion cloud, and is therefore related to the composition of the sample matrix and concentration of the analyte. 46 The small decrease of the measured B isotopic ratio in the B4 tourmaline corresponding to the highest signal intensity (ablation with 120 mm laser beam diameter, Fig. 3) is the only observed exception from this trend.…”

Section: A Laser Ablation MC Icp-ms Matrix Effectsmentioning

confidence: 94%

Matrix effects during laser ablation MC ICP-MS analysis of boron isotopes in tourmaline

Míková

Košler

Wiedenbeck

2014

J. Anal. At. Spectrom.

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Laser ablation multi-collector inductively coupled plasma mass spectrometry (LA MC ICP-MS) and secondary ion mass spectrometry (SIMS) were used to determine the boron isotopic compositions of several natural tourmaline group minerals (elbaite, schorl and dravite). This study reports on the effects of instrument parameters of LA MC ICP-MS and the composition of sample matrix on data accuracy, reproducibility and repeatability. We demonstrate that the tourmaline matrix has a significant effect on the obtained d11 B values and impacts on data accuracy, with a bias of up to ca. 2.5& if a non matrixmatched reference material is used to calibrate the measurements. In the case of a matrix-matched calibration, the boron isotopic data obtained by LA MC ICP-MS are comparable to the reference TIMS values, with typical repeatability for d 11B results between 0.2 and 0.5& (1s). This is somewhat better compared to the repeatability of 0.8-1.3& (1s) for small format single collector SIMS.

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Section: A Laser Ablation MC Icp-ms Matrix Effectsmentioning

confidence: 94%

Matrix effects during laser ablation MC ICP-MS analysis of boron isotopes in tourmaline

Míková

Košler

Wiedenbeck

2014

J. Anal. At. Spectrom.

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“…These results are tied to the isotopic composition of Zr and the two sets of measurements used different pairs of Zr isotopes. The Sr double-spike should give more accurate results than Zr for mass bias correction because of a closer match to the Rb mass range thereby minimizing non-exponential fractionation effects, which have been found to affect ICP results (Andren et al, 2004;Barling and Weiss, 2010). The accuracy of the IC of the Sr double-spike is also better assured than that of Zr.…”

Section: Rubidium Isotopic Compositionmentioning

confidence: 97%

Determination of the decay-constant of 87Rb by laboratory accumulation of 87Sr

Rotenberg¹,

Davis²,

Amelin³

et al. 2012

Geochimica et Cosmochimica Acta

102

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“…36,42 Matrix-dependent vaporization, ionization, and diffusion are all important factors affecting mass discrimination. 43 Since the parameters with respect to the sampler and the skimmer cone remain constant, we believe that the variability of mass bias observed in this study is due mainly to the processes happening in the plasma.…”

Section: Mass Bias Variation As a Function Of The Acid Concentrationmentioning

confidence: 99%

Matrix effects and mass bias caused by inorganic acids on boron isotope determination by multi-collector ICP-MS

Chen

Zhang

Wei

et al. 2016

J. Anal. At. Spectrom.

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The influence of inorganic acids (HCl, HNO 3 , and HF) on boron isotope measurement by using multicollector inductively coupled plasma mass spectrometry (MC-ICP-MS) has been investigated. The acid concentration is in the range of 0-0.2 M. Generally, acids can enhance B signal intensities and reduce isotopic mass bias compared to that of the same B concentration in a H 2 O matrix. The signal enhancement in each acid matrix differs slightly, while B isotopic mass bias is significantly different among them, with the highest 11 B/ 10 B ratio in the HF matrix and the lowest in the HCl matrix. In HCl and HNO 3 matrices, boron isotopic mass bias reduces when the acid concentration goes up. However, such a scenario is not observed in the HF matrix. Furthermore, the 11 B/ 10 B ratio in the HF matrix is the same as that in the H 2 O matrix within the studied acid concentration (up to 0.2 M). This implies that changes in mass bias and the B signal cannot be related to the same process in ICP-MS. We suggest that B signal enhancement in inorganic acids can mainly be attributed to Coulomb fission during aerosol transport towards plasma, while boron ion redistributions in the plasma caused by matrix element (e.g. Cl, N) ionization lead to changes in isotopic mass bias. As acids can cause considerable matrix effects and mass bias for boron, acidity match between samples and standard solutions is imperative for accurate and precise B isotope measurement by MC-ICP-MS.

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Sources of mass bias and isotope ratio variation in multi-collector ICP-MS: optimization of instrumental parameters based on experimental observations

Cited by 101 publications

References 43 publications

Matrix effects during laser ablation MC ICP-MS analysis of boron isotopes in tourmaline

Matrix effects during laser ablation MC ICP-MS analysis of boron isotopes in tourmaline

Determination of the decay-constant of 87Rb by laboratory accumulation of 87Sr

Matrix effects and mass bias caused by inorganic acids on boron isotope determination by multi-collector ICP-MS

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