Bioavailability and biomagnification of organophosphate esters in the food web of Taihu Lake, China: Impacts of chemical properties and metabolism.

Despite the increase in production, usage, and discharge of organophosphate flame retardants (OPFRs), little information is available about their bioaccumulation and trophic transfer in the marine ...

Bioaccumulation and Trophic Transfer of Emerging Organophosphate Flame Retardants in the Marine Food Webs of Laizhou Bay, North China.

Emerging persistent organic pollutants (ePOPs) include polybrominated diphenyl ethers (PBDEs) and perfluorooctane sulfonyl fluoride/perfluorooctane sulfonate (POSF/PFOS), which are newly listed in the Stockholm Convention. Other ePOPs, which have not been regulated, include organophosphate flame retardants (PFRs), novel brominated flame retardants (NBFRs) and other perfluoroalkyl substances (PFASs). Often ePOPs data related to occurrence, toxicity, impact or environmental behavior are insufficient or inadequate because of the lack of proper analytical methods to obtain them. Thus, a critical review of the analytical procedures proposed in the last six years (2011–2017) for determining ePOPs by chromatographic methods in the different compartments of the aquatic ecosystems is presented. The overall analytical procedure, from sampling to final determination, is emphasized presenting recent developments in the extraction, pre-concentration, and instrumental detection needed for the accurate quantification of ePOPs in environmental samples. Finally, this review examines the basic challenges we face in order to anticipate future directions and urgent needs of this field.

Analytical challenges to determine emerging persistent organic pollutants in aquatic ecosystems

The issue of marine plastic litter pollution is multifaceted, cross-sectoral, and ongoing in the absence of appropriate management measures. This study analysed the issue of marine plastic litter pollution in the context of the Descriptor 10 of the Marine Strategy Framework Directive and Good Environmental Status of the oceans and seas. The Driver-Pressure-State-Impact-Response (DPSIR) framework was used to assess the causes, effects, and management measures to changes in the marine environment resulting from marine plastics pollution. We noted that less than 10 peer-reviewed publications have applied the Driver-Pressure-State-Impact-Response (DPSIR) model to the issue of marine plastics pollution. Some basic needs such as food security, movement of goods and services, and shelter are also some of the major drivers of marine plastic pollution. The use of plastics is linked to multiple economic sectors (fisheries, agriculture, transport, packaging, construction) and other human activities. A significant amount of the resulting pressures came from the economic sectors for packaging and construction. State changes occurred at the environmental (contamination and bioaccumulation), ecosystem (ingestion of plastics, ghost fishing) and ecosystem service levels (supply of sea food, salt and cultural benefits), with possible loss of jobs and income being some of the observed impacts on human welfare. Responses as management measures, which are tailored to meet each component of the DPSIR framework, were identified. These included policies, regulations, technological advancement and behavioural change. The research acknowledges the issue of marine plastics pollution as a global environmental problem and recommends a trans-disciplinary approach, involving all types of stakeholders. Future research and analysis applying the DPSIR framework will be useful to provide the information necessary for the effective, adaptive management of litter pollution by marine plastics.

The Marine Plastic Litter Issue: A Social-Economic Analysis

A review on the occurrence of organophosphate flame retardants in the aquatic environment in China and implications for risk assessment.

The distribution and accumulation of phosphate flame retardants (PFRs) in water environment

Occurrence of organic pollutants in plastics on beach: Stranded foams can be sources of pollutants in islands

The invention belongs to the technical field of chemical analysis and detection, and discloses a device and method for determining organic pollutants in water. The device comprises a filter, a water pump, a water sample enriching concentrating device, a first spectrophotometer and a computer; the filter and the water pump are connected by a first water pipe; the water sample enriching concentrating device is connected with the filter by a peristaltic pump and a second water pipe to obtain a filtered water sample; the water sample enriching concentrating device conveys the enriched and concentrated water sample to the first spectrophotometer by a sample charging pipe; the computer is connected with the first spectrophotometer, acquires spectroscopic data, performs a series of pretreatment on the spectroscopic data and applies it into a mathematical model to obtain a detection result. According to the device and method, water sampling, filtering, concentrating, online detecting, data processing and other functional parts are combined, computer automatic overall control is adopted, the online detection function of the organic pollutants is realized, and more outstandingly, the online detection of more than 15 kinds of organic pollutants can be realized at the same time.

Device and method for determining organic pollutants in water

The utility model belongs to the technical field of chemical analysis detects, a organic pollutant's of survey aquatic device is disclosed. The device is including filter, water pump, water sample enrichment enrichment facility, a spectrophotometer and computer, filter and water pump are through a water piping connection, water sample enrichment enrichment facility passes through the peristaltic pump and the second water pipe is connected with the filter, acquires and filters good water sample, the water sample of water sample enrichment enrichment facility after with the enrichment concentration is carried to a spectrophotometer through advancing the appearance pipe, the computer is connected with a spectrophotometer, and obtain spectral data and carry out a series of preliminary treatment with spectral data, then substitution mathematic model model to obtain the testing result. Installing functional unit such as set water sampling, filtration, concentration, on -line measuring and data processing, adopting the control of the computer automation overall situation, realized organic pollutant on -line measuring's function, the that more outstanding is the organic pollutant while on -line measuring that can realize more than 15 kinds.

Organic pollutant's of survey aquatic device

The utility model discloses a slow flow filter One end of a first external partition plate and one end of a second external partition plate are both supported on a lower partition plate; one end of a first filter element is connected with the other end of the first external partition plate, and the other end of the first filter element is connected with an upper partition plate; one end of a second filter element is connected with the other end of the second external partition plate, and the other end of the second filter element is connected with the upper partition plate; an internal filter comprises a support and an internal filter element, wherein the support is closed at the lower end and is provided with an opening at the upper end, one end of the internal filter element is connected with the opening end of the support, the other end of the internal filter element is connected with the upper partition plate, and the outer side wall surface of the internal filter element is provided with a slow flow plate; after the upper end of a partition plate is connected with the lower surface of the support of the internal filter and the lower end of the partition plate is connected with the lower partition plate, a first silt deposition region is formed among the partition plate, the first external partition plate and the support, and a second silt deposition region is formed among the partition plate, the second external partition plate and the support The slow flow filter is used for filtering silt in sampled water, so that the content of the silt is greatly reduced, and the blockage of a subsequent solid-phase extraction column is avoided

Li Yi

Papers

The distribution and accumulation of phosphate flame retardants (PFRs) in water environment

Occurrence of organic pollutants in plastics on beach: Stranded foams can be sources of pollutants in islands

Device and method for determining organic pollutants in water

Organic pollutant's of survey aquatic device

Slow flow filter