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RESEARCH PRODUCT

HPLC-SEC: a new approach to characterise complex wastewater effluents

Hilda Marta SzaboTuula TuhkanenRaghida Lepistö

subject

Health Toxicology and Mutagenesista1172Soil Science010501 environmental sciences01 natural sciencesHigh-performance liquid chromatographyAnalytical ChemistryAbsorbancechemistry.chemical_compoundColumn chromatographyDissolved organic carbonEnvironmental ChemistrytryptophanUV-254DOMWaste Management and Disposalta2180105 earth and related environmental sciencesWater Science and TechnologyChromatographygreywaterElution010401 analytical chemistryPublic Health Environmental and Occupational HealthPollutionproteinshumic0104 chemical scienceschemistryWastewaterIonic strengthfluorescenceionic strengthSodium acetate

description

ABSTRACTThis work investigates the use of HPLC-SEC to characterise dissolved organic matter (DOM) of complex wastewater effluents. A silica-based column, sodium acetate eluent and multiple detections were employed: UV-254 absorbance for humictype, and tryptophan-like (Ex/Em = 270/355) and tyrosine-like (Ex/Em = 270/310) fluorescence for protein type compounds. Effects of eluent pH, eluent ionic strength and injection volume on separation efficiency were tested. Humic-type and protein-type fractions were clearly differentiated and eluted within and out of calibration range. Eluent ionic strength had the greatest influence on global resolution; the lowest eluent concentration of 0.01 M produced the best separation for all wastewater effluents tested at any detection. UV-254 absorbance was higher at neutral and basic eluent pH while tryptophan-like fluorescence depended on the sample composition rather than on the eluent pH or ionic strength. Tyrosine-like fluorescence decreased significantly with the increa...

https://doi.org/10.1080/03067319.2016.1150463