Risk Control Values and Remediation Goals for Benzo[<i>a</i>]pyrene in Contaminated Sites: Sectoral Characteristics, Temporal Trends, and Empirical Implications

Yu, Jiangtao; Luo, Huilong; Yang, Bin; Wang, Minghao; Gong, Yongquan; Wang, Panpan; Jiao, Yufang; Liang, Ting; Cheng, Hongguang; Ma, Feifei; Gu, Qingbao; Li, Fasheng

doi:10.1021/acs.est.2c09553

Cited by 9 publications

(3 citation statements)

References 66 publications

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“…In response, governments and environmental regulators worldwide are dedicated to adopting green, low-carbon strategies for sustainable land remediation [4,5]. A broad spectrum of soil remediation technologies exists, exemplified by the United States Superfund's application of nearly 30 technologies across 1468 contaminated sites.…”

Section: Introductionmentioning

confidence: 99%

Remediation Technologies of Contaminated Sites in China: Application and Spatial Clustering Characteristics

Yu,

Wang,

Yuan

et al. 2024

Sustainability

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Screening remediation technologies through the lens of green, low-carbon, and sustainable development is crucial for contaminated land management. To better understand the applicability of remediation technologies, this paper explored their application in China based on a survey of 643 cases. By employing coupled analysis and local spatial autocorrelation methods, this study reveals the alignment between remediation technologies and pollutants, along with their spatial distribution and clustering patterns. Specifically, the four primary remediation technologies identified were cement kiln co-processing (CKCP), chemical oxidation/reduction (CO/CR), thermal desorption (TR), and solidification and stabilization (S/S), collectively accounting for over 90% of the cases. Additionally, our findings indicated significant variation in how different pollutants respond to remediation technologies, largely attributable to the characteristics of the pollutants. We observed High–High clustering patterns for CKCP, CO/CR, TR, and S/S. These were predominantly found in Jiangsu, Chongqing, Shandong, and Guizhou for CKCP and CO/CR and in Hebei, Jiangsu, Shanghai, and Chongqing for CO/CR. TR exhibited a High–High clustering in Shanghai, as did S/S. This research contributes to reducing the economic and resource costs associated with the trial-and-error of screening contaminated soil remediation technologies, offering valuable scientific and technological guidance for contaminated land regulation.

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Section: Introductionmentioning

confidence: 99%

Remediation Technologies of Contaminated Sites in China: Application and Spatial Clustering Characteristics

Yu,

Wang,

Yuan

et al. 2024

Sustainability

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“…We used a multi-omics approach, including metagenomics, viromics, metatranscriptomics, and bioinformatics, to investigate the earthworm intestinal virome and its interaction with bacteriome under environmental pollution stress. Benzo[a]pyrene (BaP), a carcinogenic polycyclic aromatic hydrocarbon (PAH) was selected as a test soil pollutant because of its widespread presence and recalcitrance in soils [ 17 ] as well as its tendency to accumulate in earthworm gut [ 18 , 19 ]. Multiple phage identification assays were adopted to characterize the earthworm intestinal phage community profile and its response to BaP-induced stress.…”

Section: Introductionmentioning

confidence: 99%

Benzo[a]pyrene stress impacts adaptive strategies and ecological functions of earthworm intestinal viromes

et al. 2023

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The earthworm gut virome influences the structure and function of the gut microbiome, which in turn influences worm health and ecological functions. However, despite its ecological and soil quality implications, it remains elusive how earthworm intestinal phages respond to different environmental stress, such as soil pollution. Here we used metagenomics and metatranscriptomics to investigate interactions between the worm intestinal phages and their bacteria under different benzo[a]pyrene (BaP) concentrations. Low-level BaP (0.1 mg kg−1) stress stimulated microbial metabolism (1.74-fold to control), and enhanced the antiphage defense system (n = 75) against infection (8 phage-host pairs). Low-level BaP exposure resulted in the highest proportion of lysogenic phages (88%), and prophages expressed auxiliary metabolic genes (AMGs) associated with nutrient transformation (e.g., amino acid metabolism). In contrast, high-level BaP exposure (200 mg kg−1) disrupted microbial metabolism and suppressed the antiphage systems (n = 29), leading to the increase in phage-bacterium association (37 phage-host pairs) and conversion of lysogenic to lytic phages (lysogenic ratio declined to 43%). Despite fluctuating phage-bacterium interactions, phage-encoded AMGs related to microbial antioxidant and pollutant degradation were enriched, apparently to alleviate pollution stress. Overall, these findings expand our knowledge of complex phage-bacterium interactions in pollution-stressed worm guts, and deepen our understanding of the ecological and evolutionary roles of phages.

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“…Jennings et al [10] found that the RGVs for seven carcinogenic or mutagenic PAHs varied over 6.3-7.2 orders of magnitude worldwide under different land uses. The soil regulatory guidance values (RGVs) for benzo(a)pyrene under sensitive land use in different counties ranged from 0.11 to 1 mg/kg due to differences in regulations, theoretical basis, and soil properties [11]. Human exposure to PAHs is mainly through three pathways including oral ingestion, skin contact, and inhalation, with the oral ingestion pathway being the most important [12,13].…”

Section: Introductionmentioning

confidence: 99%

Application of the PDMS Passive Sampling Method to Assess Bioavailability and Health Risks Associated with PAH-Contaminated Soil

Jia

Yang

et al. 2023

Sustainability

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Integrating bioavailability into risk assessments is an effective way to objectively assess human health risks. In this study, the bioavailability of 16 polycyclic aromatic hydrocarbons (PAHs) in contaminated soil from a coking plant was evaluated using the polydimethylsiloxane (PDMS) passive sampling method. The results showed that the bioavailability factor (BAF) of each PAH, predicted using PDMS fibers, ranged from 0.46% to 9.74%. The PDMS passive sampling method was more stable in testing the bioavailability of PAHs with more than 4 benzene rings; a preliminary relationship was established between the BAF and the log value of the octanol–water partition coefficient (logKow). After considering their bioavailability, the carcinogenic risks (CRs) and non-carcinogenic hazard quotients (HQs) associated with the 16 PAHs were reduced by 1 to 2 orders of magnitude. Only the health risks associated with benzo(a)pyrene and dibenzo(a,h)anthracene exceeded the acceptable level. The PDMS passive sampling method provides a useful tool for estimating oral bioavailability, and incorporating its results into human exposure testing can help to refine the health risk assessment of contaminants through oral ingestion.

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Risk Control Values and Remediation Goals for Benzo[a]pyrene in Contaminated Sites: Sectoral Characteristics, Temporal Trends, and Empirical Implications

Cited by 9 publications

References 66 publications

Remediation Technologies of Contaminated Sites in China: Application and Spatial Clustering Characteristics

Remediation Technologies of Contaminated Sites in China: Application and Spatial Clustering Characteristics

Benzo[a]pyrene stress impacts adaptive strategies and ecological functions of earthworm intestinal viromes

Application of the PDMS Passive Sampling Method to Assess Bioavailability and Health Risks Associated with PAH-Contaminated Soil

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