ICP–MS with hexapole collision cell for isotope ratio measurements  of Ca, Fe, and Se

Boulyga, Sergei F.; Becker, J. Susanne

doi:10.1007/s002160100851

Cited by 85 publications

(115 citation statements)

References 2 publications

Supporting

Mentioning

108

Contrasting

Unclassified

Order By: Relevance

“…Some of the other instrumental changes are outlined below. Dynamic reaction cell or collision cell instruments bleed small volumes of gas (He or H 2 typically) into the mass spectrometer which reacts with species formed in the plasma to reduce isobaric interferences, such as 40 Ar 16 O interfering with 56 Fe, 40 Ar 14 N interfering with 54 Fe, 40 Ar 12 C interfering with 52 Cr, 40 Ar 35 Cl interfering with 75 As, but can also almost completely remove the 40 Ar interference on 40 Ca (Feldmann et al, 1999a,b;Boulyga and Becker, 2001). This may enable the most abundant isotope of Ca to be used as an internal standard in the analysis of rhyolitic glasses, rather than the smaller 43 Ca or 44 Ca isotopes which, because of high background counts, are currently unusable.…”

Section: Advances In Icp-ms Instrumentationmentioning

confidence: 99%

Correlation and characterisation of individual glass shards from tephra deposits using trace element laser ablation ICP‐MS analyses: current status and future potential

Pearce

Denton

Perkins

et al. 2007

J Quaternary Science

100

View full text Add to dashboard Cite

Pearce, Nicholas, Denton, J.S., Perkins, W.T., Westgate, J.A., (2007) 'Correlation and characterisation of individual glass shards from tephra deposits using trace element laser ablation ICP-MS analyses: current status and future potential', Journal of Quaternary Science 22(7) pp.721-736 RAE2008Laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) is a high spatial resolution analytical method which has been applied to the analysis of silicic tephras. With current instrumentation, around 30 trace elements can be determined from single glass shards as small as 40 ?m, separated from tephra deposits. As a result of element fractionation during the ablation process using a 266 nm laser, a relatively complex calibration strategy is required. Nonetheless, such a strategy gives analyses which are accurate (typically within ?5%) and have an analytical precision which varies from ?2% at 100 ppm, to ?15% at 1 ppm. Detection limits for elements used in correlation and discrimination studies are well below 1 ppm. Examples of the application of trace element analysis by LA-ICP-MS in tephra studies are presented from the USA, New Zealand and the Mediterranean. Improvements in instrumental sensitivity in recent years have the potential to lower detection limits and improve analytical precision, thus allowing the analysis of smaller glass shards from more distal tephras. Laser systems operating at shorter wavelengths (e.g. 193 nm) are now more widely available, and produce a much more controllable ablation in glasses than 266 nm lasers. Crater sizes ofPeer reviewe

show abstract

Section: Advances In Icp-ms Instrumentationmentioning

confidence: 99%

Correlation and characterisation of individual glass shards from tephra deposits using trace element laser ablation ICP‐MS analyses: current status and future potential

Pearce

Denton

Perkins

et al. 2007

J Quaternary Science

100

View full text Add to dashboard Cite

show abstract

“…Whereas for these isotope ratios precisions between 0.2 and 0.3% have been observed using ICP-MS with a hexapole collision cell, a precision of 0.07% was measured for a 10 mg L 21 uranium isotope reference solution ( 235 U/ 238 U # 1) in our laboratory. 4,35 ICP-MS with a collision cell is extremely well suited for the sensitive determination of the long-lived 129 I and 79…”

Section: Capability Of Icp-ms With a Collision Cellmentioning

confidence: 99%

State-of-the-art and progress in precise and accurate isotope ratio measurements by ICP-MS and LA-ICP-MS : Plenary Lecture

Becker

2002

J. Anal. At. Spectrom.

147

123

View full text Add to dashboard Cite

The capability to determine isotope abundances is a main feature of mass spectrometry. The precise and accurate determination of isotope ratios is required for different application fields, such as: isotope ratio measurements of stable isotopes in nature, especially for the investigation of isotope variation in nature or age dating; determining isotope ratios of radiogenic elements in the nuclear industry; quality assurance of fuel material for reprocessing plants, nuclear material accounting and radioactive waste control; and tracer experiments using highly enriched stable isotopes or long-lived radionuclides in biological or medical studies. Inductively coupled plasma mass spectrometry and laser ablation ICP-MS (LA-ICP-MS) provides excellent sensitivity, precision and good accuracy for isotope ratio measurements with practically no restriction with respect to the ionization potential of the element investigated. Therefore both ICP-MS and LA-ICP-MS are increasingly replacing thermal ionization mass spectrometry (TIMS), which has been used as the dominant analytical technique for precise isotope ratio measurements for many decades. In the last few years instrumental progress for improving figures of merit in isotope ratio measurements in ICP-MS and LA-ICP-MS with a single ion detector has been achieved by the introduction of the collision cell interface, in order to dissociate disturbing argon-based molecular ions, to reduce the kinetic energy of ions and neutralize the disturbing argon ions of the plasma gas (Ar 1 ). The application of the collision cell in ICP-MS results in higher ion transmission, improved sensitivity and better precision of isotope ratio measurements compared to ICP-MS without the collision cell. The most important instrumental improvement for isotope analysis by sector field ICP-MS was the application of a multiple ion collector device (MC-ICP-MS) (developed about 10 years ago) in order to obtain better precision of isotope ratio measurements of up to 0.002%, RSD.

show abstract

“…The space charge distribution depends on the ion energy, which in turn depends on the origin and the mass of the dominant ions. When the low-mass cut-off is set below m/z ϭ 17, for example, for the cell pressurized with ammonia, NH 3 ϩ is a dominant ion (as the dominant plasma ions transfer charge to NH 3 ). The space charge then has higher density closer to the entrance of the cell, as the dominant ions are almost stationary.…”

Section: Effect Of An Axial Field On Pressurized Cell Settling Time Amentioning

confidence: 99%

“…Rh ϩ and Co ϩ form M ϩ ⅐ (NH 3 ) n with n ϭ 1-4, for which (at NH 3 flow of 0.5) the most abundant species are Rh ϩ ⅐ (NH 3 ) 2 , Co ϩ ⅐ (NH 3 ) 2 , and 23 Na ϩ (shown as crosses), 24 Mg ϩ (circles), 39 K ϩ (diamonds), 40 Ca ϩ (squares), 56 Fe ϩ (triangles). Co ϩ ⅐ (NH 3 ) 3 . Rb ϩ and Cs ϩ do not form clusters with ammonia to a significant extent.…”

Section: Effect Of Axial Field On Cluster Formation and Reactive Analmentioning

confidence: 99%

See 1 more Smart Citation

Inductively coupled plasma mass spectrometer with axial field in a quadrupole reaction cell

Bandura¹,

Baranov²,

Tanner³

2002

J. Am. Soc. Mass Spectrom.

View full text Add to dashboard Cite

A novel reaction cell for ICP-MS with an electric field provided inside the quadrupole along its axis is described. The field is implemented via a DC bias applied to additional auxiliary electrodes inserted between the rods of the quadrupole. The field reduces the settling time of the pressurized quadrupole when its mass bandpass is dynamically tuned. It also improves the transmission of analyte ions. It is shown that for the pressurized cell with the field activated, the recovery time for a change in quadrupole operating parameters is reduced to Ͻ4 ms, which allows fast tuning of the mass bandpass in concert with and at the speed of the analyzing quadrupole. When the cell is operated with ammonia, the field reduces ion-ammonia cluster formation, further enhancing the transmission of atomic ions that have a high cluster formation rate. Ni⅐(NH3) n ϩ cluster formation in a cell operated with a wide bandpass (i.e., Ni ϩ precursors are stable in the cell) is shown to be dependent on the axial field strength. Clusters at n ϭ 2-4 can be suppressed by 9, 1200, and Ͼ610 times, respectively. The use of a retarding axial field for in-situ energy discrimination against cluster and polyatomic ions is shown. When the cell is pressurized with O 2 for suppression of 129 Xe ϩ , the formation of 127 IH 2 ϩ by reactions with gas impurities limits the detection of 129 I to isotopic abundance of ϳ10 Ϫ6 . In-cell energy discrimination against 127 IH 2 ϩ utilizing a retarding axial field is shown to reduce the abundance of the background at m/z ϭ 129 to ca. 3 ϫ 10 Ϫ8 of the 127 I ϩ signal. In-cell energy discrimination against 127 IH 2 ϩ is shown to cause less I ϩ loss than a post-cell potential energy barrier for the same degree of 127 IH 2 ϩ suppression. (J Am Soc Mass Spectrom 2002, 13, 1176 -1185

show abstract

ICP–MS with hexapole collision cell for isotope ratio measurements of Ca, Fe, and Se

Cited by 85 publications

References 2 publications

Correlation and characterisation of individual glass shards from tephra deposits using trace element laser ablation ICP‐MS analyses: current status and future potential

Correlation and characterisation of individual glass shards from tephra deposits using trace element laser ablation ICP‐MS analyses: current status and future potential

State-of-the-art and progress in precise and accurate isotope ratio measurements by ICP-MS and LA-ICP-MS : Plenary Lecture

Inductively coupled plasma mass spectrometer with axial field in a quadrupole reaction cell

Contact Info

Product

Resources

About