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This study investigated the distribution of strontium and its stable isotopic ratios (\n                    <jats:sup>87<\/jats:sup>\n                    Sr\/\n                    <jats:sup>86<\/jats:sup>\n                    Sr) in urban soils of Salg\u00f3tarj\u00e1n, a former industrial city in northern Hungary, with a focus on anthropogenic contamination, particularly from a former coal-fired power plant (CFPP). Fifteen urban soil samples from kindergartens, playgrounds, parks, and roadsides, in the northeastern part of the city were analyzed for Sr concentration, isotopic composition, and physicochemical properties. The analytical results revealed considerable variations in Sr concentrations (17.5\u201351.3\u00a0mg\u00a0kg\u207b\n                    <jats:sup>1<\/jats:sup>\n                    ), and\n                    <jats:sup>87<\/jats:sup>\n                    Sr\/\n                    <jats:sup>86<\/jats:sup>\n                    Sr ratios (0.710303\u20130.719559), indicating mixed natural and anthropogenic inputs. A two-end-member\n                    <jats:sup>87<\/jats:sup>\n                    Sr\/\n                    <jats:sup>86<\/jats:sup>\n                    Sr isotopic model was applied to semi-quantitatively estimate source contribution, identifying coal ash as a major contamination source in soils near the former CFPP. However, certain samples gathered far from the CFPP exhibited even stronger anthropogenic influence, suggesting an additional source, likely from smelter slag (known additional industrial source in the environment) and\/or unknown technogenic soils (human-transformed soils). In contrast, other samples at greater distances from the CFPP showed minimal or no coal ash contribution, instead reflecting local soil inputs (i.e., natural\/artificially made quartz-rich soils), introduced during land use changes. Our study highlights the effectiveness of\n                    <jats:sup>87<\/jats:sup>\n                    Sr\/\n                    <jats:sup>86<\/jats:sup>\n                    Sr isotopic tracing in urban contamination assessment, offering a robust tool for understanding and managing urban environment quality.\n                  <\/jats:p>","DOI":"10.1007\/s11356-026-38225-6","type":"journal-article","created":{"date-parts":[[2026,9,23]],"date-time":"2026-09-23T01:47:33Z","timestamp":1790128053000},"page":"15829-15848","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Strontium isotopic signatures and source apportionment in urban soils of Salg\u00f3tarj\u00e1n: unraveling the impact of industrial emissions"],"prefix":"10.1007","volume":"33","author":[{"given":"Mona","family":"Maghsoudlou","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Davaakhuu","family":"Tserendorj","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Gorkhmaz","family":"Abbaszade","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Norbert","family":"Kavasi","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0008-1998-9652","authenticated-orcid":false,"given":"P\u00e9ter","family":"V\u00f6lgyesi","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Edit","family":"T\u00f3th-Bodrogi","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sarata K.","family":"Sahoo","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Marko","family":"\u0160trok","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kazumasa","family":"Inoue","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tibor","family":"Kov\u00e1cs","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Csaba","family":"Szab\u00f3","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2026,9,23]]},"reference":[{"key":"38225_CR1","doi-asserted-by":"publisher","unstructured":"Abbaszade G, Toumi M, Farkas R, Vajna B, Krett G, Dobosy P, Szab\u00f3 C, T\u00f3th E (2023) Exploring the relationship between metal(loid) contamination rate, physicochemical conditions, and microbial community dynamics in industrially contaminated urban soils. 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