An experimental study on water purification performance of modified volcanic rock ecological concrete.

Sci Rep · 2025 · PMC11707080 · PMID 39774193

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a decreasing trendno p-value reported

Reasons In this study, total pollutant concentration exhibited a decreasing trend, and different decreasing rates in different periods.

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Quoted from the open-access full text in Europe PMC under the licence the publisher applied. The sentence is reproduced exactly as published; the emphasis is ours.