Knowledge Agora



Scientific Article details

Title Investigation of micropollutants in household waste fractions processed by anaerobic digestion: target analysis, suspect- and non-target screening
ID_Doc 21482
Authors Nielsen, NJ; Christensen, P; Poulsen, KG; Christensen, JH
Title Investigation of micropollutants in household waste fractions processed by anaerobic digestion: target analysis, suspect- and non-target screening
Year 2023
Published Environmental Science And Pollution Research, 30.0, 16
DOI 10.1007/s11356-023-25692-4
Abstract Household waste represents a major source of energy, nutrients, and recyclable material. In order to exploit benefits and avoid hazards in the context of circular economy, the risk profile towards human and the environment should be assessed. Here, we investigated the presence of micropollutants by quantitative target analysis, suspect and non-target screening and evaluated changes in the chemical fingerprint upon anaerobic digestion. Extracts were analyzed by reversed phase liquid chromatography high-resolution mass spectrometry (LC-HRMS) and gas chromatography mass spectrometry (GC-MS). Thirty-one of 51 target micropollutants were detected in low ng/mL levels except for few detections at mu g/mL levels. The micropollutants quantified in this study included the following: pharmaceuticals (salicylic acid, amitriptyline, carbamazepine); biocides (triclocarban, 2-phenylphenol); industrial compounds used in, e.g., paper industry (pentachlorphenol, PFOS, PFOA, bisphenol A); aromatics, polycyclic aromatics, and heteroaromatics, and their alkylated, hydroxylated, or carboxylated analogues. Fifty of 206 compounds from the suspect screening list were tentatively identified. These included phthalates, methylparaben, phenol, benzophenone, and pharmaceuticals, e.g., ibuprofen. Most compounds detected by GC-MS decreased more than twofold in peak height or remained unaffected by the anaerobic digestion, and very few increased more than twofold, e.g., p-cresol, menthol, and octadecanal. From the LC-HRMS non-target screening analysis, 250 chemical components were resolved using the multiway curve resolution technique PARAFAC2; of these, carbidopa was the only identified unknown.
Author Keywords Circular economy; Processed waste; Chemical fingerprinting; Risk profile; Chromatography and mass spectrometry
Index Keywords Index Keywords
Document Type Other
Open Access Open Access
Source Science Citation Index Expanded (SCI-EXPANDED)
EID WOS:000933936300019
WoS Category Environmental Sciences
Research Area Environmental Sciences & Ecology
PDF
Similar atricles
Scroll