Monitoring of the environmental pollution by trace element analysis in tree-rings using synchrotron radiation total reflection X-ray fluorescence

Vives, A. E. S.; Moreira, Silvana; Brienza, Sandra Maria Boscolo; Medeiros, Jean Gabriel Silva; Filho, Mário Tomazello; Zucchi, Orghêda Luíza Araújo Domingues; Filho, Virgílio Franco do Nascimento

doi:10.1016/j.sab.2006.08.007

Cited by 30 publications

(10 citation statements)

References 6 publications

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“…Considering the high degree of preservation of the studied area and the distance of pollution sources, the bioaccumulation potential of these species might be more expressive in modified regions in the São Paulo state or a depletion could occur depending on the plant species and environmental conditions (Araújo et al, 2008). In fact, results of tree species from other regions in São Paulo state were quite different, although there was a tendency of decreasing of mass fractions depending on chemical element (nutrients, for example) from very impacted areas like Cubatão (Araújo et al, 2008) and São Paulo city (Vives et al, 2006) and natural preserved areas like PECB. Besides, some chemical elements of environmental interest such as As and Sb were detected in leaves of same species growing in Cubatão (Araújo et al, 2008).…”

Section: Sm Sp* Vbic Nglom Ggar Gfla Halc Ccon Tgra Gopp Epan Mtom Camentioning

confidence: 99%

Native plant bioaccumulation strategies: a baseline study for biomonitoring the Atlantic Forest

França

Bacchi

et al. 2010

IJENVH

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The atmosphere may act as an important source of chemical elements for the Atlantic Forest, one of the hottest world biodiversity hotspots. However, chemical responses for chemical element availability are not expected to be equal for each plant species. In this sense, the present work encompasses a baseline study for biomonitoring purposes based on the identification of different strategies of native tree species in accumulating chemical elements. Instrumental neutron activation analysis was employed for chemical characterisation of leaf and soil compartments. Results indicated a low level of pollution because the major part of the studied species has shown chemical mass fractions within the expected range in leaf compartment. By estimating leaf-soil bioaccumulation factor, some species were found to accumulate the nutrients Co, Na, Se and Zn, some trace elements Br, Ba, Cs, Hg, Rb, Sc and Sr and the lanthanides Ce, La and Sm despite the environmental variability. E.J. França et al.

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Section: Sm Sp* Vbic Nglom Ggar Gfla Halc Ccon Tgra Gopp Epan Mtom Camentioning

confidence: 99%

Native plant bioaccumulation strategies: a baseline study for biomonitoring the Atlantic Forest

França

Bacchi

et al. 2010

IJENVH

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“…About soils the concern is due to their heavy matrix content, mainly Fe, which can lower the accuracy of quantitative TXRF analysis [19]. This problem less affects environmental bioindicators [20], for which absorption effects are negligible from Ca. Direct analysis as well as that of digested samples may be considered [1].…”

Section: Environmental Samplesmentioning

confidence: 99%

Total Reflection X-Ray Fluorescence (TXRF) spectroscopy for environmental and biological analysis. - Réflexion spectroscopie des rayons X de fluorescence totale dans l'analyse biologique et de l'environnement.

Borgese

Bilo

Bontempi

et al. 2013

16th International Congress of Metrology

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Abstract. This paper proposes the standardization of total reflection X-ray fluorescence (TXRF) analysis for environmental and biological samples. The importance of TXRF in environmental and biological analysis is now well established and it is continuously growing. However in these fields there are not standardized methods reported by the International Standard Organization (ISO). For this reason, the international collaboration for the development of new standard procedures and methods for TXRF analysis is required. Indeed, a project for "Interlaboratory comparison of TXRF spectroscopy for environmental analysis" was set up in the frame of the Versailles Project on Advanced Materials and Standards, with the aim of developing a new ISO standard for TXRF devoted to environmental and biological analysis.

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“…Salvador et al 63 determined trace elements in various plants to perform environmental pollution control successfully. De Vives et al 64 analysed tree rings from samples of wood collected from a specific species, Caesalinia peotophoroides, which is common in Brazil in both urban and country areas. The samples were digested prior to measurement by TXRF and the authors found a decrease in the K/Ca, K/P and Pb/Ca ratios towards the bark.…”

Section: à3mentioning

confidence: 99%

Synchrotron radiation induced TXRF

Streli

Wobrauschek

Meirer

et al. 2008

J. Anal. At. Spectrom.

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The use of synchrotron radiation (SR) as an excitation source for total reflection X-ray fluorescence analysis (TXRF) offers several advantages over X-ray tube excitation. Detection limits in the fg range can be achieved with efficient excitation for low Z as well as high Z elements due to the features of synchrotron radiation and in particular the high brilliance in a wide spectral range and the linear polarization in the orbital plane. SR-TXRF is especially interesting for samples where only small sample masses are available. Lowest detection limits are typically achieved using multilayer monochromators since they exhibit a bandwidth of about 0.01 DE/E. Monochromators with smaller bandwidth like perfect crystals, reduce the intensity, but allow X-ray absorption spectroscopy (XAS) measurements in fluorescence mode for speciation and chemical characterisation at trace levels. SR-TXRF is performed at various synchrotron radiation facilities. An historical overview is presented and recent setups and applications as well as some critical aspects are reviewed.

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Monitoring of the environmental pollution by trace element analysis in tree-rings using synchrotron radiation total reflection X-ray fluorescence

Cited by 30 publications

References 6 publications

Native plant bioaccumulation strategies: a baseline study for biomonitoring the Atlantic Forest

Native plant bioaccumulation strategies: a baseline study for biomonitoring the Atlantic Forest

Total Reflection X-Ray Fluorescence (TXRF) spectroscopy for environmental and biological analysis. - Réflexion spectroscopie des rayons X de fluorescence totale dans l'analyse biologique et de l'environnement.

Synchrotron radiation induced TXRF

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