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Amais RS, Moreau PS, Francischini DS, Magnusson R, Locosselli GM, Godoy-Veiga M, Ceccantini G, Ortega Rodriguez DR, Tomazello-Filho M, Arruda MAZ. Trace elements distribution in tropical tree rings through high-resolution imaging using LA-ICP-MS analysis. J Trace Elem Med Biol 2021; 68:126872. [PMID: 34628231 DOI: 10.1016/j.jtemb.2021.126872] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Revised: 09/26/2021] [Accepted: 10/01/2021] [Indexed: 11/16/2022]
Abstract
BACKGROUND The distribution of trace elements in tree rings although poorly known may be useful to better understand environmental changes, pollution trends, long-term droughts, forest dieback processes, and biology of trees. METHOD Laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) is used for imaging micronutrients and potentially toxic elements distribution, allowing the investigation of trace elements at high spatial resolution within the tree rings. To ensure a more efficient determination of micronutrients and potentially toxic elements, LA-ICP-MS instrumental conditions were optimized and carbon, a major element in wood, is used as an internal standard during analysis to correct for random fluctuations. RESULTS Spatial distributions maps of Ba, Cu, Fe, Mn, Ni, and Pb in growth layers of six tropical tree species were built-up using the LA-iMageS software, namely: Amburana cearensis (Fabaceae), Cedrela fissilis (Meliaceae), Hymenaea courbaril (Fabaceae), Maclura tinctoria (Moraceae), Parapiptadenia zehntneri (Fabaceae), Peltogyne paniculata (Fabaceae). A correlation between the trace element composition and different cell types (parenchyma, fiber, and vessel) was distinctly observed. It was observed a general pattern of Ba, Cu, Ni, Mn, and Pb accumulation mainly in the axial parenchyma and vessels. But the elemental composition of xylem cells is strongly species dependent. The multivariate analysis also points to a distinct accumulation of minerals between heartwood and sapwood in the same species. CONCLUSIONS Imaging both essential and deleterious element distributions in the tree rings may improve visualization and can effectively contribute to understanding the lifetime metabolism of trees and evaluating the effects of environmental changes related to climatic seasonality, pollution, and future paleoclimate reconstructions.
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Affiliation(s)
- Renata S Amais
- Spectrometry, Sample Preparation and Mechanization Group (GEPAM), Institute of Chemistry, University of Campinas, PO Box 6154, Campinas, SP, 13083-970, Brazil.
| | - Pedro S Moreau
- Spectrometry, Sample Preparation and Mechanization Group (GEPAM), Institute of Chemistry, University of Campinas, PO Box 6154, Campinas, SP, 13083-970, Brazil
| | - Danielle S Francischini
- Spectrometry, Sample Preparation and Mechanization Group (GEPAM), Institute of Chemistry, University of Campinas, PO Box 6154, Campinas, SP, 13083-970, Brazil
| | - Rafael Magnusson
- Spectrometry, Sample Preparation and Mechanization Group (GEPAM), Institute of Chemistry, University of Campinas, PO Box 6154, Campinas, SP, 13083-970, Brazil
| | | | - Milena Godoy-Veiga
- University of São Paulo, Institute of Biosciences, Department of Botany, Rua do Matão, 277, São Paulo, SP, 05508-090, Brazil
| | - Gregório Ceccantini
- University of São Paulo, Institute of Biosciences, Department of Botany, Rua do Matão, 277, São Paulo, SP, 05508-090, Brazil
| | - Daigard R Ortega Rodriguez
- University of São Paulo, Luiz de Queiroz College of Agriculture, Department of Forest Sciences, Piracicaba, Brazil
| | - Mario Tomazello-Filho
- University of São Paulo, Luiz de Queiroz College of Agriculture, Department of Forest Sciences, Piracicaba, Brazil
| | - Marco A Z Arruda
- Spectrometry, Sample Preparation and Mechanization Group (GEPAM), Institute of Chemistry, University of Campinas, PO Box 6154, Campinas, SP, 13083-970, Brazil
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Binda G, Di Iorio A, Monticelli D. The what, how, why, and when of dendrochemistry: (paleo)environmental information from the chemical analysis of tree rings. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 758:143672. [PMID: 33277003 DOI: 10.1016/j.scitotenv.2020.143672] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Revised: 10/13/2020] [Accepted: 11/02/2020] [Indexed: 05/21/2023]
Abstract
The chemical analysis of tree rings has attracted the interest of researchers in the past five decades in view of the possibility of exploiting this biological indicator as a widely available, high-resolution environmental archive. Information regarding the surrounding environment can be derived either by directly measuring environmental variables (nutrient availability, presence of pollutants, etc.) or by exploiting proxies (e.g. paleoclimatic and paleoenvironmental reconstructions). This review systematically covers the topic and provides a critical view on the reliability of dendrochemical information. First, we introduce the determinable chemical species, such as major elements, trace metals, isotopic ratios, and organic compounds, together with a brief description of their uptake mechanisms and functions in trees. Subsequently, we present the possibilities offered by analytical techniques in the field of tree ring analysis, focusing on direct methods and recent developments. The latter strongly improved the details of the accessible information, enabling the investigation of complex phenomena associated with plant life and encouraging the direct analysis of new analytes, particularly minor organic compounds. With regard to their applications, dendrochemical proxies have been used to trace several processes, such as environmental contamination, paleoclimate reconstruction, global environmental changes, tree physiology, extreme events, ecological trends, and dendroprovenance. Several case studies are discussed for each proposed application, with special emphasis on the reliability of tracing each process. Starting from the reviewed literature data, the second part of the paper is devoted to the critical assessment of the reliability of tree ring proxies. We provide an overview of the current knowledge, discuss the limitations of the inferences that may be drawn from the dendrochemical data, and provide recommendations for the best practices to be used for their validation. Finally, we present the future perspectives related to the advancements in analytical instrumentation and further extension of application fields.
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Affiliation(s)
- Gilberto Binda
- Department of Science and High Technology, Università degli Studi dell'Insubria, Via Valleggio, 12, 22100 Como, Italy
| | - Antonino Di Iorio
- Department of Biotechnology and Life Sciences, Università degli Studi dell'Insubria, Via Jean Henry Dunant, 3, 21100 Varese, Italy
| | - Damiano Monticelli
- Department of Science and High Technology, Università degli Studi dell'Insubria, Via Valleggio, 12, 22100 Como, Italy.
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Ortega Rodriguez DR, de Almeida E, Tomazello-Filho M, Pereira de Carvalho HW. Space-resolved determination of the mineral nutrient content in tree-rings by X-ray fluorescence. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 708:134537. [PMID: 31791745 DOI: 10.1016/j.scitotenv.2019.134537] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2019] [Revised: 09/16/2019] [Accepted: 09/17/2019] [Indexed: 06/10/2023]
Abstract
X-ray fluorescence spectroscopy (XRF) offers rapid, multi-elemental, low cost and non-destructive elemental analysis. Different studies have used this technique to investigate distribution and concentration of essential and deleterious elements in vegetation. Special emphasis has been recently placed on the key aspects concerning sampling processes, laboratory protocols and calibration methods for quantitative analysis. The aim of the present study was to develop a quantitative methodology to determine the nutrient content in Pinus taeda tree-rings by XRF. Using a 1 mm X-ray excitation beam from a Rh X-ray tube at 30 kV and 600 μA, and dwell time of 20 s, we present calibration curves for P, S, K, Ca, Mn and Fe based on multi-elemental standard addition using wood matrix of 17-year-old Pinus taeda trees. Satisfactory recoveries of our XRF approach for Ca, P, Mn, S and K (<115%), and tolerable for Fe (123%) were obtained compared to inductively coupled plasma optical emission spectrometry results. The non-destructive and quantitative XRF method allows assessing annual element concentrations of P. taeda trees, in order to provide tools for monitoring the nutrient dynamic in an experimental plantation. Furthermore, a method for elemental quantification based on multi-elemental standard addition using wood matrix is described as a useful procedure for future applications.
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Affiliation(s)
- Daigard Ricardo Ortega Rodriguez
- Univ. of São Paulo, Luiz de Queiroz College of Agriculture, Department of Forest Resource, Av. Pádua Dias N° 11, Piracicaba, São Paulo 13418-900, Brazil.
| | - Eduardo de Almeida
- Univ. of São Paulo, Center for Nuclear Energy in Agriculture, Av Centenário, 303, Piracicaba, São Paulo 13416-000, Brazil
| | - Mario Tomazello-Filho
- Univ. of São Paulo, Luiz de Queiroz College of Agriculture, Department of Forest Resource, Av. Pádua Dias N° 11, Piracicaba, São Paulo 13418-900, Brazil
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