Persistence-Directed Testing of Chemicals Discharged from Offshore Oil Platforms Combined with Nontargeted Analysis.

ABSTRACT: Persistent chemicals discharged into the sea can pose long-term, irreversible risks. New approaches are needed to elucidate the number and type of persistent chemicals, particularly in complex mixtures and high-volume discharges. We introduce a novel "Persistence-Directed Testing" approach that combines environmentally relevant biodegradation tests with nontarget analytical methods. Complex produced waters from two offshore oil platforms in the North Sea served as case studies. In the biodegradation tests, produced waters were diluted 1:200 with seawater from the site of discharge (inoculum). Biotic test systems and abiotic controls were incubated at 9 °C. At day 60 nontarget analyses were performed by Solid Phase Microextraction coupled to GC-MS and Solid Phase Extraction coupled to LC-HR

SUBMITTER: Moller MT 

PROVIDER: S-EPMC12613808 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature