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Stoichiometry of water-soluble ions in PM2.5: Application in source apportionment for a typical industrial city in semi-arid region, Northwest China

Typical Industrial CityEnvironmental ChemistryEngineeringEnvironmental GeochemistryEnvironmental EngineeringNorthwest ChinaAcid PrecipitationWater QualityWater-soluble IonsParticulate MatterMineral ProcessingTrace Element