Lead content of deciduous molar enamel in Finland, as measured by proton-induced X-ray emission.

Järvinen,; Anttila, A.; Lappalainen, R; Rytömaa, Inkeri

doi:10.5271/sjweh.2360

Cited by 9 publications

(1 citation statement)

References 7 publications

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“…Microanalysis with x-rays in this study was unable to detect lead as opposed to secondary ionic mass spectrometry which detected it in dentine-pulp line [28]. In our study, it was also assumed that a higher concentration of lead could be detected by a more sensitive and precise method in other parts of the teeth, not only in the One of them is SEM with multi-element detector which can be a good substitute for conventional chemical testing, especially when it comes to Ambient SEM, which is easy to handle, with a short-term analysis that does not require standard protocols for sample preparation, which is usually required when it comes to SEM analysis [29]. Increased lead concentrations can also affect the development of children and the nutrient resorption, such as calcium, selenium, copper, iron and magnesium, as well as reduced activity of different cell enzymes.…”

Section: Discussionmentioning

confidence: 99%

Analysis of Mass Portions of Biogenic Elements in Dental Tissue

Radman¹,

Đeri²,

Arbutina³

et al. 2018

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Hard dental tissues represent ideal tissues for assessing the long-term effects of exposure to toxic metals. The aim of this paper was to determine the representation and the relation between mass portions of the following elements: carbon, oxygen, sodium, magnesium, aluminum, chlorine, potassium, iodine and lead in certain parts of the teeth (enamel-dentine line, dentine, pulp) with rats with experimentally induced diabetes mellitus (DM) by using SEM/EDS analysis, after 14 and 30 days of exposing animals to lead. Material and methods of work: The study was conducted in rats of Wistar strains divided into two groups. The first experimental group (A1) consisted of 8 rats, taking lead in the course of 14 days at a concentration of 1500 ppm and the second experimental group (A2) consisted of 8 rats taking lead in the course of 30 days at a concentration of 1500 ppm. The rats from group А1 and А2 had induced diabetes mellitus by using the Alloxan which was administered intraperitoneally at a dose of 100mg per kilogram of body weight. The teeth samples were analyzed by scanning electron microscopy (SEM). Results: No lead was detected in the teeth of rats with experimentally induced diabetes that received lead in drinking water in the course of 14 days, while the average values of mass portions of other examined elements amounted to: carbon -24,25 %, oxygen – 38,17%, sodium -0,9%, magnesium -0,11%, aluminum – 0,07%, chlorine – 0,21% and iodine – 0,32%. The average values of the mass portions of examined elements in the enamel of teeth of rats receiving lead in the course of 30 days amounted to: lead -0,36%, carbon-31,09%, oxygen – 41,13%, sodium – 0,91%, magnesium – 0,21%, chlorine – 0,22%, potassium – 0,03% and iodine – 0,17%. Conclusion: Mass portions of elements found in the teeth enamel of rats receiving lead in the course of 30 days with experimentally induced diabetes were higher but with no statistically significant difference compared to the mass portions of elements in the group of teeth of rats taking lead through drinking water in the course of 14 days with experimentally induced diabetes, too. The lead was detected in the teeth of rats that received lead for 30 days with induced diabetes but only in the enamel.

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Section: Discussionmentioning

confidence: 99%

Analysis of Mass Portions of Biogenic Elements in Dental Tissue

Radman¹,

Đeri²,

Arbutina³

et al. 2018

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Proton-induced X-ray emission analysis of atherosclerotic plaques of the carotid bifurcation

Peltomaa

Mattila

Wolf

et al. 1992

Biol Trace Elem Res

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The trace elements of both calcified atherosclerotic plaques and plaque-free vessel walls of the carotid bifurcation from 31 autopsies were investigated using the proton-induced X-ray emission (PIXE) method. The trace elements studied were phosphorus (P), calcium (Ca), chrome (Cr), iron (Fe), copper (Cu), zinc (Zn), lead (Pb), selenium (Se), bromine (Br), strontium (Sr), and rubidium (Rb). All samples contained Fe and Zn. Mercury (Hg) was not detected in any of the samples studied. All plaque-free samples contained Cu and almost all Br and Ca, none Sr. All calcified atherosclerotic plaques contained Ca and almost all Br and Sr. The relative levels of Ca were higher in the calcified plaques than in the plaque-free vessel walls. The relative value of Ca in calcified and uncalcified samples was greatest in the group who had died because of cardiovascular disorders and smallest in the group who had died from other causes. There was a strong positive correlation between the Ca and Sr of the plaque samples and between the P and Br of the plaque-free samples.

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External-beam methods in biomedical work

Räisänen

1987

Biol Trace Elem Res

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The useability of external-beam proton-induced X-ray (PIXE) and gamma-ray (PIGE) emission, backscattering spectrometry (BS), and the particle-particle method in biomedical work is demonstrated. Detection limit values obtainable by the methods for typical biomedical samples under practical conditions are given and compared. Advantages, drawbacks, and restrictions of the methods are discussed. Examples of the applications of the methods in biomedical work are given.

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Lead content of deciduous molar enamel in Finland, as measured by proton-induced X-ray emission.

Cited by 9 publications

References 7 publications

Analysis of Mass Portions of Biogenic Elements in Dental Tissue

Analysis of Mass Portions of Biogenic Elements in Dental Tissue

Proton-induced X-ray emission analysis of atherosclerotic plaques of the carotid bifurcation

External-beam methods in biomedical work

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