Matrix effects in PIXE analysis on liquid samples with an external beam

Lin, Tsang–Lang; Luo, Chien-Shu; Chou, Jen-Chang

doi:10.1016/0029-554x(79)90665-7

Cited by 12 publications

(2 citation statements)

References 12 publications

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“…Also, their assays are 99.95-99.99%, i.e., they contain 100-500 ppm of impurities. Lin et al (1979) carried out the studies on the variations of relative sensitivity in the external beam PIXE analysis of liquid samples due to the presence of large amounts of neighboring elements. And they reported that the variations of relative sensitivity for elements of Z≥20 were less than 1% if the Cu-concentration was less than 5 mg/mL (i.e., 5000 ppm).…”

Section: Liquid Sample Holder With a Micro-scalementioning

confidence: 99%

Preliminary Study on the Elemental Quantification of in Ambient Liquid Samples of Microliter Volume Using the In-air Micro-PIXE Technique

Ma¹,

Lim²,

Sakai³

2017

Asian J. Atmos. Environ

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Quantifying the trace elements in infinitesimal ambient liquid samples (e.g., single raindrop, cloud/ fog water, and the soluble fraction extracted from the particles collected for a short time) is an important task for understanding formation processes, heating/cooling rates, and their health hazards. The purpose of this study is to employ an in-air micro PIXE system for quantitative analysis of the trace elements in a thimbleful of reference liquid sample. The bag type liquid sample holder originally designed with 10 μm thick Mylar ® film retained the original shape without any film perforation and apparent peaks of film blank by the end of the analysis. As one of tasks to be solved, the homogeneity of the elemental distribution in liquid reference species was verified by the X-ray line profiles for several references. It was possible to resolve the significant peaks for whole target elements corresponding to the channel number of micro-PIXE spectrum. The calibration curves for the six target elements (Si, S, Cl, Fe, Ni, and Zn) in standard solutions were successfully plotted by concentration (ppm) and ROI of interest net counts/dose (nC).

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Section: Liquid Sample Holder With a Micro-scalementioning

confidence: 99%

Preliminary Study on the Elemental Quantification of in Ambient Liquid Samples of Microliter Volume Using the In-air Micro-PIXE Technique

Ma¹,

Lim²,

Sakai³

2017

Asian J. Atmos. Environ

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“…Various analytical methods have been utilized. X-ray fluorescence (XRF) and particle-induced X-ray emission analysis (PIXE) are non-destructive but can be influenced by matrix effects that result in major interferences (Lin and Luo, 1979). Inductively coupled plasma mass spectrometry (ICP-MS) is widely used for quantifying trace elementals and is included in some federal reference methods for the identification of metals in water and ambient PM in the US (e.g.…”

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A Method for Liquid Spectrophotometric Measurement of Various Forms of Iron and Copper in Ambient Aerosols

Yang¹,

Gao²,

Weber³

2021

Preprint

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Abstract. Determination of transition metals in ambient aerosols is important due to their toxicity to human health. However, the traditional measurement techniques for metal analysis are often costly and require sophisticated instruments. In this study, we developed and verified relatively low-cost liquid spectrophotometric methods for the measurements of iron (Fe) and copper (Cu), often the two most abundant transition metals in ambient fine particulate matter (PM2.5). For Fe analysis, we utilized a ferrozine based colorimetric method, which has been frequently used for water-soluble (WS) Fe determination, and further extended this approach for the measurement of total Fe (water-soluble + water-insoluble). In this method, Fe is quantified through the formation of a light-absorbing ferrozine-Fe(II) complex (absorbance at 562 nm). A similar colorimetric method, which forms a bathocuproine-Cu(I) complex absorbing light at 484 nm, was developed and examined for measurement of WS and total Cu. These methods were applied to 24-hour integrated filter samples collected in urban Atlanta. Based on PM2.5 ambient aerosols, total and water-soluble Fe and Cu concentrations were in good agreement with inductively coupled plasma mass spectrometry (ICP-MS) measurements (slopes 1.0 ± 0.1, r2 > 0.89). The water-soluble components, operationally defined as those species in the aqueous filter extract that pass through a 0.45 µm pore filter, were further characterized by ultrafiltration, which showed that roughly 85 % of both the Fe and Cu in the water-soluble fraction was composed of components smaller than nominally 4 nm.

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Proton induced X-ray emission (PIXE) analysis on thick samples exemplified on the rare earth elements

Garten

Groeneveld

König³

1981

Z. Anal. Chem.

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Matrix effects in PIXE analysis on liquid samples with an external beam

Cited by 12 publications

References 12 publications

Preliminary Study on the Elemental Quantification of in Ambient Liquid Samples of Microliter Volume Using the In-air Micro-PIXE Technique

Preliminary Study on the Elemental Quantification of in Ambient Liquid Samples of Microliter Volume Using the In-air Micro-PIXE Technique

A Method for Liquid Spectrophotometric Measurement of Various Forms of Iron and Copper in Ambient Aerosols

Proton induced X-ray emission (PIXE) analysis on thick samples exemplified on the rare earth elements

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