https://hal-anses.archives-ouvertes.fr/anses-02556379/document

Occurrence and effects of plastic additives on marine environments and organisms: A review

Human internal and external exposure to PBDEs – A review of levels and sources

Characterization and remediation of soils contaminated with uranium.

Levels and trends of HBCD and BDEs in the European and Asian environments, with some information for other BFRs.

Several perfluoroalkyl and polyfluoroalkyl substances (PFASs) have been identified as chemicals of concern in the environment due to their persistence, global ubiquity, and classification as reproductive and developmental toxicants, endocrine disrupters, and possible carcinogens. Multiple PFASs are often found together in the environment due to product manufacturing methods and abiotic and biotic transformations. Treatment methods are needed to effectively sequester or destroy a variety of PFASs from groundwater, drinking water, and wastewater. This review presents a comprehensive summary of several categories of treatment approaches: (1) sorption using activated carbon, ion exchange, or other sorbents, (2) advanced oxidation processes, including electrochemical oxidation, photolysis, and photocatalysis, (3) advanced reduction processes using aqueous iodide or dithionite and sulfite, (4) thermal and nonthermal destruction, including incineration, sonochemical degradation, sub- or supercritical tr...

Degradation and Removal Methods for Perfluoroalkyl and Polyfluoroalkyl Substances in Water

Determination of polybrominated diphenyl ethers (PBDEs) in fish samples from rivers and estuaries in Taiwan.

The feasibility of using sulfur-containing organophosphorus reagents for the chelation−supercritical fluid extraction (SFE) of toxic heavy metals and uranium from acidic media was investigated. The SFE experiments were conducted in a specially designed flow-through liquid extractor. Effective extraction of the metal ions from various acidic media was demonstrated. The effect of the ligand concentration in supercritical CO2 on the kinetics of metal extraction was studied. A simplified model is used to describe the extraction kinetics, and good agreement of experimental data with the equilibrium-based model is achieved.

Supercritical fluid extraction of toxic heavy metals and uranium from acidic solutions with sulfur-containing organophosphorus reagents

This study reports on a method for the speciation of iron in aqueous samples by the simultaneous analysis of divalent and trivalent iron ions with ion chromatography equipped with chemiluminescence detection (IC-CLD). Ferrous and ferric ions are first chelated by pyridine-2,6-dicarboxylic acid (PDCA) to form complexed anions, and separated by a mixed-bed ion-exchange column. The separated complexed ions are then detected with a CLD system containing luminol and hydrogen peroxide in a basic solution. This luminescence system has a linear dynamic range of ca. 3 orders of magnitude, with method detection limits as low as 7 µg L(-1) for Fe(II) and 3 µg L(-1) for Fe(III), measured in the simultaneous detection mode. This system resists interferences from common cations such as Cd, Ca, Cr, Cu, Mg, Ni, Pb, and Zn. Evaluation by analyzing real samples shows that this method is rapid, accurate, sensitive, and selective.

Simultaneous Speciation of Iron(II) and Iron(III) by Ion Chromatography with Chemiluminescence Detection

Selective extraction of strontium with supercritical fluid carbon dioxide.

Degradation of lindane and hexachlorobenzene in supercritical carbon dioxide using palladium nanoparticles stabilized in microcellular high-density polyethylene.

Hwa-Kwang Yak

Papers

Determination of polybrominated diphenyl ethers (PBDEs) in fish samples from rivers and estuaries in Taiwan.

Supercritical fluid extraction of toxic heavy metals and uranium from acidic solutions with sulfur-containing organophosphorus reagents

Simultaneous Speciation of Iron(II) and Iron(III) by Ion Chromatography with Chemiluminescence Detection

Selective extraction of strontium with supercritical fluid carbon dioxide.

Degradation of lindane and hexachlorobenzene in supercritical carbon dioxide using palladium nanoparticles stabilized in microcellular high-density polyethylene.