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Evidence for bias in C and N concentrations and δ13C composition of terrestrial and aquatic organic materials due to pre-analysis acid preparation methods

BioconcentrationOrganic GeochemistryBiogeochemistryEnvironmental ChemistryAquatic Organic MaterialsEngineeringEnvironmental EngineeringEnvironmental Analytical Chemistryδ13C CompositionAcid PrecipitationAnalytical ChemistryWater QualityEcotoxicologyN ConcentrationsEnvironmental Fate