Investigation of P and S Distributions in the Roots of<i>Tagetes patula</i>L. using Micro-PIXE

Makjanić, J.; Vis, R.D.; Groneman, A.F.; Gommers, F.J.; Henstra, S.

doi:10.1093/jxb/39.11.1523

Cited by 5 publications

(1 citation statement)

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“…The PIXE (proton induced X-ray emission) technique with microscanning facility is ideally suited for the study of spatial distribution of metal pollutants on forest surfaces (19,20). Micro-PIXE has been used in determining the element concentrations at different depths below apple skin (21) and the elemental distribution within roots by line-scanning along the diameter of the cross section (22). By scanning needle surfaces with micro-PIXE, our study determined metal concentrations in and on epicuticular wax layers and characterized their relationship with surface microstructure, especially the distribution of stomata.…”

Section: Introductionmentioning

confidence: 99%

Concentration and Distribution of Metal Elements at the Surface of Balsam Fir Foliage by Micro-Proton Induced X-ray Emission

Lin

Schuepp

1995

Environ. Sci. Technol.

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Metal contaminations at the surface of balsam fir (Abies balsamea (L.) Mill.) needles collected at two locations in southern Quebec were determined by micro-PIXE (micro-proton induced X-ray emission) with scanning depth of 3−4 or 45−50 μm and scanning spacing from 15 to 250 μm. At adaxial surfaces, concentrations of Al, Si, Ca, Ti, Fe, and Zn were significantly (P < 0.05) higher at the near-urban site than at the mountainous location. Accumulation of Mg, Al, Si, K, Mn, Fe, and Zn was significantly (P < 0.01) higher at surfaces of unwashed needles as compared to chloroform-washed needles, which shows significant metal accumulation in/on epicuticular wax layers. Metal deposits, except Mn, in epicuticular wax layers were significantly affected by washing with acidic solution. Distributions of Mg, K, Mn, and Zn deposits at the surface were lower around central regions than near foliar edges, while Si was higher around the central area. Scanning to the 45−50 μm depth showed significant accumulation of Ni on either side of the foliar center groove.

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Section: Introductionmentioning

confidence: 99%