Untitled

Wiandt, Suzanne; Poremski, Heinz-Jochen

doi:10.1023/a:1020569608441

Cited by 13 publications

(1 citation statement)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Diverse physicochemical parameters significantly influence the environmental behaviors of chemicals, which can be used as indicators of PBT characteristics. As shown in Table , relatively consistent results could be clearly observed of the categorized physicochemical properties of compound candidates with the POPs characteristics by authoritative organizations such as the United Nations Environment Programme (UNEP), European Commission, U.S. EPA, and Environmental Canada. ,− For instance, a compound is perceived to have the LRT capacity when the criteria of V P < 1000 Pa and AO T 1/2 > 2 days is met. The compound is considered environmentally persistent in the circumstances that the half-life could reach 60, 120, and 180 days in the water, sediment, and soil environments, respectively, and the thresholds of log K OW > 5 and BAF/BCF > 5000 are generally set to validate the bioaccumulation potential.…”

Section: Basic Principles On Recognition Of Environmental Orgainc Pol...mentioning

confidence: 62%

Identification and Prioritization of Environmental Organic Pollutants: From an Analytical and Toxicological Perspective

Ruan

Wang

et al. 2023

Chem. Rev.

View full text Add to dashboard Cite

Exposure to environmental organic pollutants has triggered significant ecological impacts and adverse health outcomes, which have been received substantial and increasing attention. The contribution of unidentified chemical components is considered as the most significant knowledge gap in understanding the combined effects of pollutant mixtures. To address this issue, remarkable analytical breakthroughs have recently been made. In this review, the basic principles on recognition of environmental organic pollutants are overviewed. Complementary analytical methodologies (i.e., quantitative structure−activity relationship prediction, mass spectrometric nontarget screening, and effect-directed analysis) and experimental platforms are briefly described. The stages of technique development and/or essential parts of the analytical workflow for each of the methodologies are then reviewed. Finally, plausible technique paths and applications of the future nontarget screening methods, interdisciplinary techniques for achieving toxicant identification, and burgeoning strategies on risk assessment of chemical cocktails are discussed.

show abstract

Section: Basic Principles On Recognition Of Environmental Orgainc Pol...mentioning

confidence: 62%

Identification and Prioritization of Environmental Organic Pollutants: From an Analytical and Toxicological Perspective

Ruan

Wang

et al. 2023

Chem. Rev.

View full text Add to dashboard Cite

show abstract

Development of species sensitivity distributions and estimation of HC5 of organochlorine pesticides with five statistical approaches

Wang

Huang

et al. 2008

Ecotoxicology

View full text Add to dashboard Cite

Eighteen organochlorine pesticides (OCPs) were studied to develop species sensitivity distributions (SSDs) and calculate hazardous concentration thresholds for 5% of species (HC5), using both parametric (log-normal and log-logistic) and nonparametric bootstrap methods. In order to avoid picking repetitive values in each resample when performing bootstrap, and to determine the influence of fluctuation of toxicity data of single species on the SSDs and HC5, a modified bootstrap method was introduced, which can generate unrepetitive sampling data other than original elements in datasets. This method can enlarge a dataset without any assumption of a special distribution. Combined with parametric methods, modified bootstrap was also used to develop SSDs and determine HC5. The HC5 estimated by five approaches coincide well with each other with good positive correlation. Even if there is intra-species variation in a certain range of toxicity data; SSDs and HC5 are not very sensitive to the local fluctuation of toxicity of single species. The studied OCPs were classified according to their estimated HC5. A lower HC5 indicates higher ecological toxicity potentials. Endrin, DDTs and Endosulfan are OCPs with very high ecological toxicity potential. alpha-HCH has the lowest ecological toxicity potential in the studied OCPs. For OCPs with high ecological potential, more attention should be paid to their ecological risk.

show abstract

Chemical characterisation of dredged sediments in relation to their potential use in civil engineering

Zuliani

Mladenovič

Ščančar

et al. 2016

Environ Monit Assess

View full text Add to dashboard Cite

During capital and/or maintenance dredging operations, large amounts of material are produced. Instead of their discharge, dredged sediments may be a valuable natural resource if not contaminated. One of the possible areas of application is civil engineering. In the present work, the environmental status of seaport dredged sediment was evaluated in order to investigate its potential applicability as a secondary raw material. Sediments were analysed for element concentrations in digested samples, aqueous extracts and fractions from sequential extraction; for fluoride, chloride and sulphate concentrations in aqueous extracts; and for tributyltin (TBT). Granulometric and mineralogical compositions were also analysed. The elemental impact was evaluated by calculation of the enrichment factors. The total element concentrations determined showed moderate contamination of the dredged sediments as was confirmed also by their moderate enrichment factors, presumably as a result of industrial and port activities. Elemental concentrations in the aqueous extract were very low and therefore do not represent any hazard for the environment. The water-soluble element concentrations were under the threshold levels set by the EU Directive on the landfill of waste, on the basis of which the applicability of dredged sediments in civil engineering is evaluated, while the content of chloride and sulphate were above the threshold levels. It was found out that due to the large amounts of sediment available, civil engineering applications such as the construction of embankments and backfilling is the most beneficial recycling solution at present.

show abstract

Untitled

Cited by 13 publications

References 1 publication

Identification and Prioritization of Environmental Organic Pollutants: From an Analytical and Toxicological Perspective

Identification and Prioritization of Environmental Organic Pollutants: From an Analytical and Toxicological Perspective

Development of species sensitivity distributions and estimation of HC5 of organochlorine pesticides with five statistical approaches

Chemical characterisation of dredged sediments in relation to their potential use in civil engineering

Contact Info

Product

Resources

About