Asymmetrical Flow Field-Flow Fractionation Methods for Quantitative Determination and Size Characterization of Thiols and for Mercury Size Speciation Analysis in Organic Matter-Rich Natural Waters.

Asymmetrical flow field-flow fractionation (AF4) efficiently separates various macromolecules and nano-components of natural waters according to their hydrodynamic sizes. The online coupling of AF4 with fluorescence (Fluo) and UV absorbance (UV) detectors (FluoD and UVD, respectively) and inductively coupled plasma-mass spectrometry (ICP-MS) provides multidimensional information. This makes it a powerful tool to characterize and quantify the size distributions of organic and inorganic nano-sized components and their interaction with trace metals.

Marine litter pollution on the Northern Island of the Novaya Zemlya archipelago.

This study focused on the identification and classification of marine litter on four different shores of the uninhabited Northern Island of the Novaya Zemlya archipelago (Russian Federation). Using the methodology of the Marine Strategy Framework Directive (MSFD), beach sections of 100 m in length were selected and marine litter items larger than 2.5 cm were collected and classified into nine material categories.