The concentration of ions, metals, and metalloids in hailstone samples was evaluated for the first time in South America. The samples were previously cleaned with ultrapure water to eliminate potential contaminants. The ions concentrations in the samples showed a general pattern according to the following sequence: Ca²⁺ ˃ $N{O}_3^{-}$> K⁺ > CHOO⁻ > Mg²⁺ > Cl⁻ > $SO{}_4^{2^{\_}}$> Na⁺ > ${\text{NH}}_4^{+}$ > F⁻. Regarding the metals and metalloids concentrations, the order was of Zn > Al > Fe > Mn > Sr > Ba > Cu > Ni > Cr > Pb > Co > V. Ca²⁺ was the most abundant and agricultural activity, one of the sources due to long-distance transport. Concentrations of K⁺ and Cl⁻ may originate from fires that occur every year in the North and Center-West regions of Brazil. Local sources also contributed to the chemical composition, such as soil resuspension contributing mainly to the species and elements Al, Fe, Na⁺, K⁺, $SO{}_4^{2^{\_}}$, and F⁻. Besides that, the region is an agricultural area with unpaved roads and use of fertilizer; therefore, the species and elements ${\text{NH}}_4^{+}$, Mg²⁺, K⁺, Cl⁻, Cu, and Zn, were also associated with local sources, including emissions from vegetation. A possible vehicular contribution was also observed. Among the few existing studies, this is the first to evaluate the hailstones cleaning procedure's efficiency. The findings also support the previous studies' conclusion that the concentration of chemical species varies considerably according to the region of study's characteristics. This work contributes to improve the understanding of local and remote natural and anthropic emissions in this complex atmospheric phenomenon.

冰雹样品中离子，金属和类金属的浓度在南美首次进行了评估。样品事先用超纯水清洗，以消除潜在的污染物。样品中的离子浓度按照以下顺序显示出一般模式：Ca 2 ⁺ ˃$ñ{Ø}_3^{--}$> K ⁺  > CHOO ⁻  > Mg ²⁺  > Cl ⁻ >$\mathrm{小号}Ø{}_4^{2^{\_}}$> Na ⁺ >${\text{NH}}_4^{+}$> F ⁻。就金属和准金属的浓度而言，顺序为锌>铝>铁>锰>锶>钡>铜>镍>铬>铅>钴>钒。Ca2 ⁺是最丰富的和农业活动的来源之一由于长途运输。钾浓度⁺和Cl ^-可能每年发生在巴西北部和中西部地区发起的火灾。当地来源也对化学成分有所贡献，例如土壤重悬主要是对Al，Fe，Na ⁺，K ⁺，$\mathrm{小号}Ø{}_4^{2^{\_}}$和F ^- 。除此之外，该地区是一个农业领域，道路未铺砌，肥料也未使用。因此，物种和元素${\text{NH}}_4^{+}$，镁²⁺，K ⁺，氯^-，Cu和Zn，还用当地来源，包括从植被的排放有关。还观察到可能的车辆影响。在少数现有研究中，这是第一个评估冰雹清洁程序效率的方法。这些发现也支持先前的研究结论，即化学物质的浓度根据研究特征的不同而有很大差异。这项工作有助于增进对这种复杂的大气现象的本地和边远自然和人为排放的了解。