Substances of emerging concern in Baltic Sea water: Review on methodological advances for the environmental assessment and proposal for future monitoring.

The Baltic Sea is among the most polluted seas worldwide. Anthropogenic contaminants are mainly introduced via riverine discharge and atmospheric deposition. Regional and international measures have successfully been employed to reduce concentrations of several legacy contaminants.

Quantification of alizarin red S uptake in coregonid eggs after mass-marking.

An easy method to measure the uptake rate of the persistent dye alizarin red S (ARS) during marking of whitefish eggs was established and used to measure the ARS content in three different whitefish species during and at the end of the marking procedure. Those values show that only 6-10% of the ARS in the marking solution will be absorbed by the eggs (0.0061-0.

Two-dimensional hydrophilic interaction and reversed phase liquid chromatography easily extracted pesticides and polar pesticides multi-residue method--A concept.

We offer a concept for the simultaneous determination of QuEChERS amenable and highly polar pesticides using two-dimensional liquid chromatography high resolution mass spectrometry with electrospray ionization (ESI) and polarity switching. First results proved feasibility to determine glyphosate, AMPA, ethephon, glufosinate, MPPA, fosetyl-Al, N-acetyl-glufosinate, N-acetyl-glyphosate and N-acetyl-AMPA including fragments, next to 325 QuEChERS amenable pesticides. We plan to investigate an efficient extraction procedure by either diluting with water or acetonitrile extraction in mini scale without the need for additional clean-up steps.

Evaluation of the bioaccumulation potential of alizarin red S in fish muscle tissue using the European eel as a model.

For fish stock management and large-scale stocking programs, the chemical substance alizarin red S (ARS) is an important tool to mark fish permanently. Equally, for the IUCN red list species European eel (Anguilla anguilla), ARS is proven to be the most promising option for mass marking. ARS binds to calcified structures (i.