Organophosphate flame retardants (OPFRs): A review on analytical methods and occurrence in wastewater and aquatic environment

A review of organophosphate flame retardants and plasticizers in the environment: Analysis, occurrence and risk assessment.

Organophosphate flame retardants (OPFRs) have been detected in various environmental matrices and have been identified as emerging contaminants (EC). Given the adverse influence of OPFRs, many researchers have focused on the absorption, bioaccumulation, metabolism, and internal exposure processes of OPFRs in animals and humans. This paper first reviews the evolution of various types of flame retardants (FRs) and the environmental pollution of OPFRs, the different absorption pathways of OPFRs by animals and humans (such as inhalation, ingestion, skin absorption and absorption), and then summarizes the environmental impacts of OPFRs, including their biological toxicity, bioaccumulation, persistence, migration, endocrine disruption and carcinogenicity. Based on limited available data and results, this study also summarizes the bioaccumulation and biomagnification potential of OPFRs in different types of biological and food nets. In addition, a new governance idea for the replacement of existing OPFRs from the source is proposed, seeking environmentally friendly alternatives to OPFRs in order to provide new ideas and theoretical guidance for the removal of OPFRs.

https://www.mdpi.com/1422-0067/20/12/2874/pdf

A Review of a Class of Emerging Contaminants: The Classification, Distribution, Intensity of Consumption, Synthesis Routes, Environmental Effects and Expectation of Pollution Abatement to Organophosphate Flame Retardants (OPFRs).

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.

Organophosphorus flame retardants and heavy metals in municipal landfill leachate treatment system in Guangzhou, China.

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

The occurrence, seasonal variation and emission of nine widely used phosphorus flame retardants (PFRs) were investigated in a wastewater treatment plant (WWTP) located in Guangzhou, China, over 1 year. Results showed that PFRs were widely detected in wastewater and sewage sludge. Tris(2-chloroisopropyl) phosphate (TCIPP) was the most dominant PFRs in influent, effluent, and sludge. Significant seasonal variation of total PFRs in the influent was observed (p < 0.05). However, no significant seasonal variation found in chlorinated and alkyl PFRs. The emission of PFRs was comparable with the previously reported values of decabromodiphenyl ether in WWTPs. Risk quotient for PFRs showed low eco-toxicity risk in effluent for aquatic organisms. Since the removal efficiency of total PFRs was less than 30% and the use of PFRs had been increasing, continuous monitoring of the environmental impact on the receiving water is still needed.

Occurrence, seasonal variation and environmental impact of phosphorus flame retardants in a large scale wastewater treatment plant

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

Slow flow filter

The utility model relates to a filtering device for a toxic organic polluted water body. The filtering device comprises a water-sand separator and further comprises a secondary filter, wherein the secondary filter is connected with the water-sand separator and comprises a water conveying pipe, a first valve, a slow flow filter and a platinum filtering tube; the input end of the first valve is connected with the water conveying pipe, the output end of the first valve is connected with one end of the slow flow filter and the other end of the slow flow filter is connected with the platinum filtering tube. The filtering device provided by the utility model filters silt in sampled water for a plurality of times, so that the content of the silt is reduced to a great extent and a subsequent solid phase extraction column is prevented from being blocked.

Liu Shengyu

Papers

Organophosphorus flame retardants and heavy metals in municipal landfill leachate treatment system in Guangzhou, China.

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

Occurrence, seasonal variation and environmental impact of phosphorus flame retardants in a large scale wastewater treatment plant

Slow flow filter

Filtering device for toxic organic polluted water body