Analysis of the first rain after a prolonged drought in southern Brazil using TXRF

IF 2.8 3区物理与天体物理 Q3 CHEMISTRY, PHYSICAL

Radiation Physics and Chemistry Pub Date : 2025-06-27 DOI:10.1016/j.radphyschem.2025.113117

Letícia Martins Birelo, Aline Mariani de França, João Marcos Fávaro Lopes, Avacir Casanova Andrello, Eduardo Inocente Jussiani

引用次数: 0

Abstract

In September 2024, following a prolonged drought and widespread wildfires across Brazil, the first rainfall was forecasted in the southern region of the country. This study investigates the chemical composition of this rainwater. Rainwater samples were collected from 15 locations and analyzed using Total Reflection X-ray Fluorescence (TXRF) with a Bruker S2 Picofox system. The results revealed the presence of elements such as Al, Si, P, S, Cl, K, Ca, Ti, Cr, Mn, Fe, Cu, Zn, Br, Ba, and Sr. The highest concentrations were observed for Ca (425 mg/L), Cl (353 mg/L), Si (265 mg/L), K (150 mg/L), Fe (149 mg/L), and Al (119 mg/L). These findings highlight the relationship between environmental events, such as droughts and wildfires, and rainwater composition, emphasizing broader implications for air quality and water resources.

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使用TXRF分析巴西南部长期干旱后的第一场雨

2024年9月，在巴西经历了长期干旱和广泛的野火之后，预计该国南部地区将迎来第一场降雨。这项研究调查了这种雨水的化学成分。从15个地点收集雨水样本，并使用Bruker S2 Picofox系统使用全反射x射线荧光（TXRF）进行分析。结果显示，样品中存在Al、Si、P、S、Cl、K、Ca、Ti、Cr、Mn、Fe、Cu、Zn、Br、Ba和sr等元素，其中Ca （425 mg/L）、Cl （353 mg/L）、Si （265 mg/L）、K （150 mg/L）、Fe （149 mg/L）和Al （119 mg/L）的浓度最高。这些发现突出了环境事件（如干旱和野火）与雨水组成之间的关系，强调了对空气质量和水资源的更广泛影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Radiation Physics and Chemistry 化学-核科学技术

CiteScore

5.60

自引率

17.20%

发文量

574

审稿时长

12 weeks

期刊介绍： Radiation Physics and Chemistry is a multidisciplinary journal that provides a medium for publication of substantial and original papers, reviews, and short communications which focus on research and developments involving ionizing radiation in radiation physics, radiation chemistry and radiation processing. The journal aims to publish papers with significance to an international audience, containing substantial novelty and scientific impact. The Editors reserve the rights to reject, with or without external review, papers that do not meet these criteria. This could include papers that are very similar to previous publications, only with changed target substrates, employed materials, analyzed sites and experimental methods, report results without presenting new insights and/or hypothesis testing, or do not focus on the radiation effects.