Pentachlorophenol and nine other chlorophenols in urine of children and adolescents in Germany – Human biomonitoring results of the German Environmental Survey 2014–2017 (GerES V)

Schmied-Tobies, Maria I.H.; Murawski, Aline; Schmidt, Lukas; Rucic, Enrico; Schwedler, Gerda; Apel, Petra; Göen, Thomas; Kolossa-Gehring, Marike

doi:10.1016/j.envres.2021.110958

Cited by 35 publications

(4 citation statements)

References 28 publications

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“…Several biomonitoring studies on phenolic compounds have shown that the determination of the actual urinary excretion would provide a reliable estimation of individual exposure and that the levels of chemicals excreted from the body vary signi cantly depending on the population studied, re ecting differences in race and ethnicity(28-30). In comparison to concentrations found in the United States and Canada, TCP exposure is still fairly common, but exposure levels among children and adolescents in Germany were generally (31). Geometric mean urinary 2,4,5-TCP concentrations decreased with ageand increased with education level and income.…”

Section: Strati Ed Analysismentioning

confidence: 76%

Association of bone mineral density and osteoporosis with trichlorophenol: A national-representative, population-based study

Yan

Xiong

Tao

et al. 2022

Preprint

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Background: Trichlorophenols (TCPs) are metabolites of several organochlorine chemicals, including chlorobenzene, hexachlorocyclohexane, and chlorophenoxy acid, present in air, surface water, soil, and sediment. However, the relationship between TCP and bone mineral density (BMD) and osteoporosis has not been studied yet. Methods: We used data from the 2005-2010 National Health and Nutrition Examination Survey (NHANES). TCP were obtained from urine specimens of 3385 participants and bone mineral density was obtained by dual X-ray absorptiometry (DXA) whole-body scanning. Multiple regression analysis, stratified analysis, curve fitting analysis, and trend tests were used to assess the relationship between TCP and BMD and osteoporosis. Result: After adjusting for confounding factors, the results of multiple regression analysis only showed that ln-2,4,5-TCP was negatively associated with BMD of lumbar spine. In stratified analyses, ln-2,4,5-TCP and ln-2,4,6-TCP was were not statistically associated with BMD in total femur, femoral neck, femoral tuberosity, intertrochanteric femur and lumbar spine, which was also confirmed by curve fitting analyses and trend tests. Multiple regression analysis and stratified analysis showed that ln-2,4,5-TCP and ln-2,4,6-TCP was were not statistically associated with osteopenia/osteoporosis. Conclusion: 2,4,5-TCP and 2,4,6-TCP were not significantly associated with BMD and osteopenia/osteoporosis in the US population.

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Section: Strati Ed Analysismentioning

confidence: 76%

Association of bone mineral density and osteoporosis with trichlorophenol: A national-representative, population-based study

Yan

Xiong

Tao

et al. 2022

Preprint

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“…They pose a significant threat to the ecological environment and to animal and plant health. Therefore, many countries and organizations have listed halogenated organics as priority pollutants. − For example, the US Environmental Protection Agency, the Chinese Ministry of Ecology and Environment, and the European Union have all formulated corresponding laws and regulations to control the source. , …”

Section: Introductionmentioning

confidence: 99%

Rational Design and Structural Regulation of Robust Catalysts for Electrocatalytic Hydrodechlorination: From Nanostructures to Single Atoms

Zhang

et al. 2023

ACS Catal.

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As a class of persistent pollutants that are easily bioaccumulatable and highly biotoxic, chlorinated organic pollutants exist in the environment and pose a substantial threat to ecological safety. The electrocatalytic hydrodechlorination (EHDC) technology shows the advantages of high efficiency, simple operation, mild reaction conditions, and no secondary pollution and thus promises a good application prospect in the treatment of chlorinecontaining pollutants. Pd-based catalysts are considered the most efficient catalysts for electroreductive dechlorination thus far, yet the reserves of Pd are scarce, and the price is often prohibitively high. The development of noble metal catalysts with high atom utilization and non-noble metal catalysts for EHDC has become a hot research topic, but relevant reviews are still lacking. In this paper, the research progress on EHDC catalysts during recent years is reviewed and the influence of catalyst microstructure regulation on the EHDC performance is discussed in detail. The regulation strategies including the regulation mechanisms of electronic effect, support effect, size effect, and coordination effect for enhancing the EHDC performance of catalysts at different scales (from nanostructures to single atoms) are summarized and proposed, which could provide guidance for the development of efficient EHDC catalysts from the atomic scale. At the end of this review, the application prospects and challenges for EHDC catalysts are also discussed.

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“…According to the US EPA, chlorophenols (CPs) are toxic chlorinated pollutants that are carcinogenic and toxic even at low concentrations [1][2][3]. These compounds are widely used as pesticides, herbicides, fungicides, molluscicides, acaricides, bactericides, and mould inhibitors in agriculture fields [4,5], to preserve wood [6][7][8], and for the synthesis of organic compounds [9]. As a result, CPs are detected in groundwater as well as in soil, which in turn finds its way into the food chain, and there are numerous reports on respiratory stress, liver damage, and increased cancer risk in aquatic animals as well as humans when exposed to CP-contaminated water [10].…”

Section: Introductionmentioning

confidence: 99%

Study on free and entangled binary metal nanocatalysts for removal of 2,4,6-trichlorophenol in aqueous phase: a comparative study

Felshia

Gnanamani

2023

Nanotechnology

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The present study highlights the comparative catalytic removal of 2,4,6-trichlorophenol (TCP) in aqueous phase by binary metal nanocatalysts in free as well as entangled forms. In brief, binary nanocatalysts comprising of Fe-Ni are prepared, characterized, and subsequently entangled in reduced graphene oxide (rGO) for better performances and reuse applications. Optimization studies on the mass of free and rGO-entangled binary nanocatalysts with respect to TCP concentration and other environmental factors are studied in detail. Results suggest binary nanocatalysts in free form at 40 mg/ml took 300 min to dechlorinate 600 ppm of TCP, whereas rGO-entangled Fe-Ni catalyst took only 190 min. Experiments on the reuse of the catalyst with respect to removal efficiency implied compared to free form rGO-entangled nanocatalysts exemplify more than 98% of removal efficacy even after 5 times of exposure to 600 ppm TCP concentration. High-performance liquid chromatography analysis display a pattern of sequential dechlorination during catalytic process. Followed by dechlorination, the phenol-enriched aqueous phase exposed to Bacillus licheniformis SL10, which degrades the phenol effectively within 24 hours. In conclusion, the prepared binary metal nanocatalysts, both in free as well as in rGO-entangled forms, effectively dechlorinate 2,4,6-TCP contaminations in aqueous phase, but with significant differences in time taken for the removal. And entanglement facilitate the reuse of the catalyst more effectively. The accumulated phenol biocatalytically removed and suggests the reuse applications of treated water.

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Pentachlorophenol and nine other chlorophenols in urine of children and adolescents in Germany – Human biomonitoring results of the German Environmental Survey 2014–2017 (GerES V)

Cited by 35 publications

References 28 publications

Association of bone mineral density and osteoporosis with trichlorophenol: A national-representative, population-based study

Association of bone mineral density and osteoporosis with trichlorophenol: A national-representative, population-based study

Rational Design and Structural Regulation of Robust Catalysts for Electrocatalytic Hydrodechlorination: From Nanostructures to Single Atoms

Study on free and entangled binary metal nanocatalysts for removal of 2,4,6-trichlorophenol in aqueous phase: a comparative study

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