کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5131313 | 1490891 | 2016 | 9 صفحه PDF | دانلود رایگان |
- Simultaneous interference-free measurement of 8 prosthesis-related metals at ultra-trace levels in blood samples.
- Overcoming spectral overlap using a CH3F/He gas mixture in an octopole reaction cell.
- Assessment of volumetric absorptive micro-sampling of blood preceding elemental analysis.
This paper reports on an evaluation of the suitability of a novel sample collection approach, volumetric absorptive micro-sampling (VAMS), in the context of the determination of ultra-trace concentrations of prosthesis-related metals (Al, Ti, V, Co, Cr, Ni, Sr and Zr) in whole blood. In a first phase, a simple dilute-and-shoot approach (100-fold dilution) followed by tandem ICP - mass spectrometry (ICP-MS/MS) analysis was developed for the accurate and sensitive determination of the target elements. The ICP-MS/MS method relies on the use of mass shift reactions proceeding when pressurizing the collision/reaction cell (CRC) with CH3F/He for dealing with spectral overlap. Limits of detection (LoDs) between 0.3 and 30 ng Lâ1 were attained in a multi-element approach. The accuracy of the method was demonstrated via successful analysis of the reference materials Seronorm Whole Blood Levels 1 and 3, and real venous blood samples, spiked with the target elements at different concentration levels (5-50 μg Lâ1). Although the implementation of VAMS devices introduced contamination problems for Al, Cr and Ni, VAMS followed by ICP-MS/MS analysis shows potential for future real-life routine applications when assessing levels of Ti, V, Co, Sr and/or Zr.
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Journal: Analytica Chimica Acta - Volume 941, 19 October 2016, Pages 1-9