Lecture
Identification and monitoring of PM substances beyond the “usual suspects” across environmental matrices
- at -
- ICM Saal 3
- Type: Lecture
Lecture description
Persistent and mobile (PM) substances are able to spread quickly in the water cycle and where thus identified as potentially problematic for the environment and water quality [1]. If also toxic (PMT), or very persistent and very mobile (vPvM) they are
regulated under CLP for their potential to cause long-lasting contamination of water resources.PM chemicals are a challenge for a circular economy for water as they are difficult to remove from the water cycle even when advanced treatment technologies
like activated carbon or ozone are used [2]. PM chemicals are often too polar for widely used screening and monitoring approaches like reversed-phase liquid chromatography (RPLC) or gas chromatography (GC) interfaced with mass spectrometry (MS) and thus many PM chemicals are not regularly monitored or may even remain undiscovered [3].
Suspect and nontarget screening approaches utilizing dedicated methods for PM chemicals resulted in the discovery of wide range of novel PM chemicals like the “battery-PFAS” bis(trifluormethylsulfonyl)imide and the sulfonic acid 2-acrylamido-2-
methylpropyl sulfonic acid. Monitoring of these chemicals throughout the water cycle revealed that many PM chemicals are difficult to remove during advanced wastewater treatment, with less than 20% of the PM burden being removed by powdered activated
carbon and roughly half being removed by ozonation [2]. Consequently, these chemicals were found to be widely present in freshwater resources and even tap water, highlighting their potential for human exposure.
Literature:
[1] T. Reemtsma, Env. Sci. Technol. 2016, 50, 10308-10315. [2] I. Neuwald, STOTEN, 2023, 886, 16392. [3] D. Zahn, Anal. Bioanal. Chem. 2020, 412, 4763-4784
regulated under CLP for their potential to cause long-lasting contamination of water resources.PM chemicals are a challenge for a circular economy for water as they are difficult to remove from the water cycle even when advanced treatment technologies
like activated carbon or ozone are used [2]. PM chemicals are often too polar for widely used screening and monitoring approaches like reversed-phase liquid chromatography (RPLC) or gas chromatography (GC) interfaced with mass spectrometry (MS) and thus many PM chemicals are not regularly monitored or may even remain undiscovered [3].
Suspect and nontarget screening approaches utilizing dedicated methods for PM chemicals resulted in the discovery of wide range of novel PM chemicals like the “battery-PFAS” bis(trifluormethylsulfonyl)imide and the sulfonic acid 2-acrylamido-2-
methylpropyl sulfonic acid. Monitoring of these chemicals throughout the water cycle revealed that many PM chemicals are difficult to remove during advanced wastewater treatment, with less than 20% of the PM burden being removed by powdered activated
carbon and roughly half being removed by ozonation [2]. Consequently, these chemicals were found to be widely present in freshwater resources and even tap water, highlighting their potential for human exposure.
Literature:
[1] T. Reemtsma, Env. Sci. Technol. 2016, 50, 10308-10315. [2] I. Neuwald, STOTEN, 2023, 886, 16392. [3] D. Zahn, Anal. Bioanal. Chem. 2020, 412, 4763-4784
