Environmental Pollutants and Neural Tube Defects

Ren, Aiguo

doi:10.1016/b978-0-12-804239-7.00061-5

Cited by 6 publications

(1 citation statement)

References 110 publications

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“…The main pollutants generated during coal mining and combustion are polycyclic aromatic hydrocarbons (PAHs), which are benzene compounds consisting of several benzene rings (Sahu et al 2009;Li et al 2014;Ribeiro et al 2014;Sushkova et al 2017;Yakovleva et al 2017;Cheng et al 2019;Tarafdar and Sinha 2019). PAHs have carcinogenic, toxic and mutagenic effect on living organisms (Yakovleva et al 2011;Li et al 2012;Hamid et al 2017;Ren 2017;Lors et al 2018). PAHs that enter the atmosphere through various sources fall on the surface of plants, which is followed by their intense accumulation, and then migrate and accumulate along the whole food chain (Ugwu and Ukoha 2016).…”

Section: Introductionmentioning

confidence: 99%

Polish Polar Research

Yakovleva

Габов

2020

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Polycyclic aromatic hydrocarbons (PAHs) are organic compounds characterized by carcinogenic, toxic and mutagenic effect on life organisms. The mining and burning of coal are widely practiced in the tundra zone which results in the release of PAHs. The studies of PAHs content in organogenic horizon of tundra soil and southern tundra plants were performed at the control sites and at areas affected by coal industry. The soil and plants were analyzed for PAHs by HPLC. It was established that tundra soils, lichens and mosses are contaminated with polyarenes to a larger extent in the areas affected by the coal mining. The peak of PAHs concentration in the area affected by the Vorkutinskaya coal mine was observed within the distance of 0.5 km, and within 1.0 km in the area affected by the thermal power station. We propose to use diagnostic correlations of fluoranthene/ chrysene and fluoranthene/benz[b]fluoranthene in soils and mosses Pleurozium schreberi (Brid.) Mitt. to characterize the origin of polyarenes in tundra ecosystems. The similar polyarenes distribution is found in the soils and plants under the influence of coal industry. With polyarenes supply from industrial sources decreasing, their bioaccumulation level in the plants is reduced. We recommend Pleurozium schreberi to be used as a pollution indicator of tundra phytocenoses with PAHs and leaves of Betula nana L. for assessment of short-time changes of polyarene contents. The general contents rather than the surface accumulations are more suitable for the monitoring studies.

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Section: Introductionmentioning

confidence: 99%

Polish Polar Research

Yakovleva

Габов

2020

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Polycyclic aromatic compounds in plants and peat in the peatlands of the European part of Russian Arctic

Yakovleva¹,

Габов²,

Василевич³

et al. 2022

Plant Soil

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The features of haloacetic acid oxidation that contribute to stratospheric ozone depletion

et al. 2022

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Environmental context Due to The Montreal Protocol, stratospheric ozone concentration is slowly regenerating, however, the recovery rate is slower than predicted by photochemical models. FTIR spectroscopy together with quantum chemical calculations confirmed that ozone reacts with halogenated acids adsorbed at a model aerosol surface. Reactions occur at low temperatures without photochemical activation with formation of halogen oxides that are known to promote catalytic cycles of ozone depletion. Abstract The present work addresses the problem of stratospheric ozone depletion. While gas phase and photochemically induced reactions of ozone are well studied, the mechanisms of heterogeneous O3 interactions with different halogenated species still remain uncertain. An in situ FTIR investigation of low-temperature heterogeneous reactions of ozone and haloacetic acids in conditions close to stratospheric was performed and supported by ab initio quantum chemical calculations. Products of ozone reaction with differently chlorine and bromine-substituted acetic acids were identified and possible reactions pathways were suggested. Ozone can attach to a carbon atom to release a halogen atom that forms a halogen oxide. Halogen oxide in its turn can take part in the catalytic cycles of ozone depletion. Suggested reaction pathways leading to the additional release of the chlorine oxides can enhance the atmospheric models that calculate ozone concentration.

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Environmental Pollutants and Neural Tube Defects

Cited by 6 publications

References 110 publications

Polish Polar Research

Polish Polar Research

Polycyclic aromatic compounds in plants and peat in the peatlands of the European part of Russian Arctic

The features of haloacetic acid oxidation that contribute to stratospheric ozone depletion

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