Dietary and inhalation exposure to polycyclic aromatic hydrocarbons and urinary excretion of monohydroxy metabolites – A controlled case study in Beijing, China

Zhang, Yanyan; Ding, Junnan; Shen, Guofeng; Zhong, Junjun; Wang, Chen; Wei, Siye; Chen, Chaoqi; Chen, Yuanchen; Lu, Yan; Shen, Huizhong; Li, Wei; Huang, Ye; Han, Chunyan; Su, Shu; Lin, Nan; Wang, Xilong; Liu, Wenxin; Tao, Shu

doi:10.1016/j.envpol.2013.10.005

Cited by 78 publications

(46 citation statements)

References 48 publications

(88 reference statements)

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“…However, the total amount of impregnated iron was 5.0 wt%. Compared to results reported by Chang et al [44] who used the same method, the difference might be because the carbon 2 2 −1 ™ HT material was different. Furthermore, during the repetitions, part of the impregnated iron might have been re-dissolved into the liquid phase and some support material lost during the separation steps.…”

Section: Characterization Of the Fresh Catalystscontrasting

confidence: 48%

“…Finally, all catalyst materials yielded much lower adsorption compared to the commercial AC Norit. The high adsorptive properties of carbonaceous materials have been widely presented in the literature [43,44,45]. Table 2 The pH change, removal of BPA, TOC conversion and leaching of iron (compared to the initial amount of iron in the prepared Fe catalysts) after 3 h oxidation reaction π − π According to the results, all materials showed similar catalytic activity.…”

Section: Characterization Of the Fresh Catalystsmentioning

confidence: 68%

“…The Fe concentrations were adjusted to obtain 2.5, 5.0 and 33% Fe content (w/w) on the catalyst, and the corresponding catalysts were thus named 2.5Fe/CR, 5.0Fe/CR and 33Fe/CR, respectively. The multi-step method presented by Chang et al [44] was used to impregnate the CR with iron (2.5Fe/CR). After the incipient impregnation, the mixture was stirred for 16 h at room temperature and at initial pH.…”

Section: Preparation Of the Catalystsmentioning

confidence: 99%

“…According to the literature to date, only a few studies have used carbon-based catalysts in the CWPO process [42], but the studies showed very promising results in this field of study. Many of these studies were conducted by using commercial activated carbons [43,44,45,46]; however, environmentally friendly alternatives that are more cost-effective are needed. Industrial processes generate various waste materials and by-products, and all utilization applications are preferred to landfilling.…”

Section: Introductionmentioning

confidence: 99%

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Preparation of Novel Fe Catalysts from Industrial By-Products: Catalytic Wet Peroxide Oxidation of Bisphenol A

et al. 2017

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Biomass-based carbon residue (CR) was used as a support material for iron catalysts to degrade bisphenol A (BPA) in catalytic wet peroxide oxidation (CWPO). According to the results, CR and Fe/CR catalysts are suitable materials for CWPO. The Fe catalysts were prepared by either incipient wet impregnation or wet impregnation methods with an iron chloride solution. The specific surface area of the prepared catalysts was 17-91 m g , and it remained the same after the oxidation experiments. The CWPO experiments were carried out batch-wise at c (

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Section: Characterization Of the Fresh Catalystscontrasting

confidence: 48%

Section: Characterization Of the Fresh Catalystsmentioning

confidence: 68%

Section: Preparation Of the Catalystsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Preparation of Novel Fe Catalysts from Industrial By-Products: Catalytic Wet Peroxide Oxidation of Bisphenol A

et al. 2017

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“…Therefore, measuring 1-OHP serves not only as an indicator of pyrene, but that of exposure to mixture of PAHs as well (7).…”

Section: Introductionmentioning

confidence: 99%

The Relations between Polycyclic Aromatic Hydrocarbons Exposure and 1-OHP Levels as a Biomarker of the Exposure

Klöslová¹,

Drimal

Balog

et al. 2016

Cent Eur J Public Health

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SUMMARYBackground and Aim: Polycyclic aromatic hydrocarbons (PAHs) are the products of incomplete combustion or pyrolysis of various organic materials. Their ubiquity in the environment leads to measurable levels of exposure. However, the exposure varies strongly between different regions in Europe. Some PAHs with four or more rings are suspected to be human carcinogens. Therefore, the occupational and/or environmental exposure to PAHs may cause a significant health risk. The aim of the study was to evaluate current levels of PAH exposure in defined groups of workers.Methods: The industrial sites selected in this survey involved PAHs originating from coal tar pitch, carbon black, bitumen, and rubber fumes. Based on the historical data, the sites were expected to exhibit quantifiable levels of exposure to PAHs. The total study population consisted of 139 persons: 108 workers (85 males and 23 females) occupationally exposed in aluminium production, the production of graphite electrodes, road construction, or the rubber forming industry and 31 control individuals in two groups.Results: The highest concentrations -8-hour time-weighted average (TWA) levels (sum of 16 components according to the EPA list), as expected, were found in the aluminium production plant (55.15 µg.m −3 ) and production of graphite electrodes (54.25 µg.m −3 ). The lowest concentrations were found in personal air samples of road construction workers (1.93 µg.m −3 ). The concentrations of 1-hydroxypyrene as a pyrene metabolite (1-OHP) in the urine of the exposed group of workers were found in levels 0.74 µmol.mol −1 creatinine before the exposure and 2.27 µmol.mol −1 creatinine after the exposure (arithmetic mean values). 1-OHP concentrations in post-shift urine samples were highly correlated with the total airborne PAHs concentrations and pyrene concentrations in air. The correlation coefficients (r S ) between 1-OHP concentration and pyrene or total PAHs in air were 0.710 and 0.752 (p < 0.05). This statistical analysis confirmed the effect of the occupational exposure to PAHs and pyrene on body burden in workers. However, a modifying effect of gender, smoking habits, dietary intake, genetically modified metabolism, and the use of medication on the toxicokinetics of pyrene was not determined as significant.Conclusion: Based on the results a strong correlation between the concentration of 1-OHP in urine as an exposure biomarker and the concentration of pyrene or PAH was affirmed.

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Aquaculture Contributes a Higher Proportion to Children's Daily Intake of Polycyclic Aromatic Hydrocarbons Than to That of Adults in Eastern China

et al. 2019

Enviro Toxic and Chemistry

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Asia, especially China, shares a large proportion of global aquaculture production. Consequently, aquaculture food quality and safety with regard to contamination with polycyclic aromatic hydrocarbons (PAHs) were assessed in eastern China, which is a typical area of aquaculture. The concentrations of ∑PAHs ranged from 42 to 600 ng/g dry weight in a variety of dietary species from farm ponds in eastern China. With regard to the total daily intake of PAHs estimated based on the literature data on urinary hydroxy‐PAHs in this region, there was a significant difference between children (mean = 130 ng/kg/d) and adults (mean = 600 ng/kg/d for pregnant women, 1700 ng/kg/d for women, and 2300 ng/kg/d for men). Furthermore, we provided a novel estimation on the fractional contribution of aquatic products to the overall human daily intake of PAHs. Specifically, the contribution of aquatic foodstuffs to total daily intake for children and pregnant women reached more than 50 and 10%, respectively, indicating that children and pregnant women were more vulnerable to the PAH‐contaminated aquaculture foodstuffs. Meanwhile, no significant region‐specific pattern between different provinces was observed. In summary, these results suggested that sensitive subpopulations were vulnerable to exposure to PAH‐contaminated aquatic products, and it is necessary to pay attention to the dietary intake pattern of these sensitive subgroups in eastern China. Environ Toxicol Chem 2019;00:1–9. © 2019 SETAC

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Dietary and inhalation exposure to polycyclic aromatic hydrocarbons and urinary excretion of monohydroxy metabolites – A controlled case study in Beijing, China

Cited by 78 publications

References 48 publications

Preparation of Novel Fe Catalysts from Industrial By-Products: Catalytic Wet Peroxide Oxidation of Bisphenol A

Preparation of Novel Fe Catalysts from Industrial By-Products: Catalytic Wet Peroxide Oxidation of Bisphenol A

The Relations between Polycyclic Aromatic Hydrocarbons Exposure and 1-OHP Levels as a Biomarker of the Exposure

Aquaculture Contributes a Higher Proportion to Children's Daily Intake of Polycyclic Aromatic Hydrocarbons Than to That of Adults in Eastern China

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