What do we know about the production and release of persistent organic pollutants in the global environment?

Li, Li; Chen, Chengkang; Li, Dingsheng; Breivik, Knut; Abbasi, Golnoush; Li, Yifan

doi:10.1039/d2va00145d

Cited by 23 publications

(23 citation statements)

References 72 publications

(125 reference statements)

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“…Standards of biphenyl and 58 PCB congeners were purchased (neat, purities ≥96.9%, Dr. Ehrenstorfer brand, LGC, U.K.) and prepared as stock solutions of single substances in methanol and mixed to working solutions. For the internal standard (IS) mix, biphenyl-d 10 (neat, purity ≥96.5%, LGC), deuterated PCB congeners (neat, purity ≥97%, CDN Isotopes, Pointe Claire, Canada), and 13 C labeled PCB congeners (purity ≥98% in nonane, redissolved in methanol, Wellington Laboratories, Canada) were combined and diluted in methanol. Further details can be found in the Supporting Information (SI), before Table S1.…”

Section: Chemicalsmentioning

confidence: 99%

“…4−7 As bioaccumulative substances, they concentrate in the adipose tissue of organisms and can harm entire marine predatory populations, even leading to their extinction. 8−11 PCBs are discussed to be highimpact POPs based on hazard and production volumes 12,13 for which an environmentally sound management is requested by 2028. 14,15 Due to fire protection regulations, PCBs were also used in mining activities according to local health and safety regulations.…”

Section: ■ Introductionmentioning

confidence: 99%

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Between Underground and the Deep Blue Sea: Contamination of Mine Water Effluents by Polychlorinated Biphenyls (PCBs)

Wiltschka,

Wolkersdorfer,

Düring

et al. 2023

ACS EST Water

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Polychlorinated biphenyls (PCBs) were used as industrial chemicals due to their beneficial physicochemical properties in many applications until the recognition of their adverse effects. Although being banned for decades, PCBs are still ubiquitous in the environment due to their congener-specific high persistence and their ongoing remobilization from contaminated sites. While mining influenced water (MIW) was generally known to be a potential source of PCB contamination, hardly anything was known about concentrations, congener patterns, or PCB loads. For further elucidation of environmental risks, 14 MIW samples from five mine water effluents were analyzed for a set of 58 PCB congeners and biphenyl by a specifically optimized SPME-GC-MS method (LOD 0.004−0.58 ng L −1 ). As a result, 53 mono-to heptachlorinated congeners could be detected in concentrations of 0.01−25.9 ng L −1 per congener, of which mainly tri-but also diand tetrachlorinated PCBs were identified in higher concentrations. Total PCB concentrations (0.02−0.12 mg m −3 ) and annual loads (0.1−0.7 kg PCBs a −1 per mine) show the relevance of MIW as an additional point source for PCB release to the environment. Implementation of water treatment is recommended to achieve a decrease in these contaminant loads in agreement with worldwide efforts to eliminate PCBs.

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Section: Chemicalsmentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 99%

Between Underground and the Deep Blue Sea: Contamination of Mine Water Effluents by Polychlorinated Biphenyls (PCBs)

Wiltschka,

Wolkersdorfer,

Düring

et al. 2023

ACS EST Water

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“…The same study estimated that the annual production of CPs exceeded 1 Mt in the early 2000s, reaching its peak around 1.5 Mt in 2014, including 0.4 Mt of SCCPs. The global cumulative production of SCCPs was nearly 9 Mt by 2020, making SCCPs the most produced POP of all times …”

Section: Introductionmentioning

confidence: 99%

“…The global cumulative production of SCCPs was nearly 9 Mt by 2020, making SCCPs the most produced POP of all times. 12 It is essential to highlight that products and articles containing restricted SCCPs at concentrations ≥1% (w/w) should be considered as POPs according to the SCCP listing under the Stockholm Convention. 5 However, the Cl content is the main factor driving CP production and use worldwide, and SCCP contents have been reported well above 1% (w/w) in technical CP mixtures.…”

Section: ■ Introductionmentioning

confidence: 99%

Homologue Composition of Technical Chlorinated Paraffins Used in Several Countries over the Last 50 Years─SCCPs Are Still Out There

Guida,

Matsukami,

Oliveira de Carvalho

et al. 2023

Environ. Sci. Technol.

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“…The release of toxic compounds and organic contaminants into the environment poses risks to human health and the sustainability of water resources. [1][2][3][4][5] Water pollution occurs when water bodies, such as rivers, lakes, and groundwater, become contaminated with various substances that have harmful effects. [6][7][8][9][10] These pollutants can come from industrial activities, agricultural practices, improper waste disposal, sewage discharge, and other human activities.…”

Section: Introductionmentioning

confidence: 99%

Recent Advances in MXenes Based Composites as Photocatalysts: Synthesis, Properties and Photocatalytic Removal of Organic Contaminants from Wastewater

Kitchamsetti

Barros

2023

ChemCatChem

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MXene has indeed gained significant attention in recent years as a promising photocatalyst for various applications, including photocatalytic degradation of pollutants. MXene possesses several unique physical and chemical properties that make it suitable for such applications, including its uniform planar structure, strong metal conductivity, effective functional groups, and numerous derivatives. These properties contribute to the excellent photodegradation performance and long‐term stability exhibited by MXene‐based photocatalysts compared to other photocatalysts. MXene‐based composites, which are formed by incorporating MXene with other materials, demonstrate even better photodegradation activity due to their abundant active sites and porous structure. One crucial factor influencing the photodegradation performance of MXene‐based photocatalysts is the presence of active functional groups on the surface of MXene. These functional groups play a significant role in the photocatalytic process and contribute to the overall efficiency of the catalyst. To provide a broader understanding of MXene‐based photocatalysts, the physicochemical properties of MXene are briefly described in this review. This includes its structural characteristics, electrical conductivity, and the presence of functional groups. This review also investigates the physical and chemical synthesis routes for preparing MXene, both in its natural state and as composites with other materials. These synthesis methods are essential for tailoring the properties of MXene‐based photocatalysts to meet specific requirements. Finally, the review discusses future work and challenges in MXene‐based photocatalysis. This field holds great promise for addressing environmental concerns and improving the degradation of organic compounds. However, further research is needed to optimize the synthesis methods, enhance the photocatalytic efficiency, and explore the practical applications of MXene‐based photocatalysts.

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What do we know about the production and release of persistent organic pollutants in the global environment?

Abstract: Information on the global production and environmental releases of persistent organic pollutants (POPs) is of critical importance for regulating and eliminating these chemical substances of worldwide environmental and health concerns....

Cited by 23 publications

References 72 publications

Between Underground and the Deep Blue Sea: Contamination of Mine Water Effluents by Polychlorinated Biphenyls (PCBs)

Between Underground and the Deep Blue Sea: Contamination of Mine Water Effluents by Polychlorinated Biphenyls (PCBs)

Homologue Composition of Technical Chlorinated Paraffins Used in Several Countries over the Last 50 Years─SCCPs Are Still Out There

Recent Advances in MXenes Based Composites as Photocatalysts: Synthesis, Properties and Photocatalytic Removal of Organic Contaminants from Wastewater

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