National surveillance of 2,3,7,8-substituted polychlorinated dibenzo-p-dioxins/furans in soil in Taiwan

Hsu, Yi Chyun; Que, Danielle E.; Gou, Yan; Tsou, Tsui‐Chun; Liu, Chung Kun; Wang, Yen Ling; Hou, Wen Che; Lin, Yi Hsien; Liu, Wen Yao; Chao, How‐Ran; Lee, Wen Jhy

doi:10.1016/j.chemosphere.2018.03.191

Cited by 4 publications

(3 citation statements)

References 57 publications

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“…It is suggested that the PCDD/Fs came from the industrial process as the maximum WHO-TEQ value from background site soil was only 1.24 pg WHO-TEQ/g dw compared to industrial areas soil which had maximum WHO-TEQ values of 1.73 to 3.98 pg WHO-TEQ/g dw. Results from Hsu et al (2018) revealed that the average total PCDD/Fs for contaminated sites and background sites was 14.0 ± 19 pg WHO-TEQ/g and 6.25 ± 17.5 pg WHO-TEQ /g, respectively, hence the suggestion that dioxins are produced by industrial process. Pandelova et al's (2018) study presented generally higher PCDD/Fs content compared to mineral topsoil.…”

Section: Sources Of Dioxins In Related Samplesmentioning

confidence: 97%

Dioxins in peat and its formation: An overview

Mohamed

Majid

Leong

et al. 2020

Cogent Environmental Science

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Polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans collectively named dioxins, have long been investigated in numerous ways in their formation and presence in diverse types of matrices, e.g.,, air, soil, food, milk, and tissue, and their effects on human health among others. In the 1970s and 1980s, dioxins and other hazardous pollutants were found to be excessive in the environment prompting a global concern on its restriction and elimination. By year 2000, curbed industrial releases had remarkably lowered dioxin emission. However, dioxin emission continued to be a hazard from non-industrial sources such as forest fires, domestic combustion, and vehicles. In South East Asia, frequent peat fires may have leadingly contributed to the dioxins level in the environment. The objective of this review is to compile related data on dioxins in peats and to theorize the possible source and their formation.

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Section: Sources Of Dioxins In Related Samplesmentioning

confidence: 97%

Dioxins in peat and its formation: An overview

Mohamed

Majid

Leong

et al. 2020

Cogent Environmental Science

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“…At the provincial level, the distribution of I-TEQ concentrations across provinces also shows a high degree of spatial heterogeneity (ANOVA: F = 4.04, p < 0.001), which is mainly attributed to the influence of the provincial economic development level, population density and industrialization degree (Figure 2c); by averaging the I-TEQ concentrations of all sample points in certain province) [47,[49][50][51]. For example, Inner Mongolia, Qinghai and Hainan, with lower levels of economic development (accounting for 1.71%, 0.30% and 0.55% of the national GDP in 2020, respectively), population density (1850.42, 2929.52 and 2444.40 people/km 2 , respectively) and added value of secondary industry (6868.00, 1143.50 and 1055.30 billion yuan, respectively), have the lowest average dioxin concentrations: 0.25, 0.30 and 0.51 ng I-TEQ/kg, respectively.…”

Section: Baseline Concentration Level Of Dioxinsmentioning

confidence: 98%

“…The results show a significant heterogeneity in the spatial distribution pattern for dioxin concentrations in soils (ANOVA: F = 10.31, p < 0.001). The reason for this might lie in the higher industrialization degree and intensive dioxins emission sources (e.g., cement production, MSW incineration and steel industry) in the eastern region, which results in the increase in dioxin concentrations in soils through atmospheric deposition [46][47][48].…”

Section: Baseline Concentration Level Of Dioxinsmentioning

confidence: 99%

Baseline Soil Dioxin Levels from Sites Where Municipal Solid Waste Incineration Construction Is Planned throughout China: Characteristics, Sources and Risk Assessment

Wan

Guo

et al. 2023

Sustainability

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The determination of baseline dioxins levels in soils is fundamental for the quantitative assessment of the net environmental and health impacts of municipal solid waste (MSW) incineration plants, which remains unexplored. Therefore, this study develops a Chinese baseline soil dioxins database (covering 918 soil samples from 292 pre-construction MSW incineration plants nationwide during 2016–2020) to thoroughly explore the baseline contamination characteristics and health risks of dioxins in soils. The empirical results show that (1) for concentration levels, the baseline international toxic equivalency (I-TEQ) concentrations vary from 0.0015 to 32 ng I-TEQ/kg, which are close to or even lower than those in most existing studies and show significant heterogeneity across provinces; (2) for dioxins homolog, highly chlorinated dioxins (i.e., PCDDs) are the dominant contributor to the total dioxins in soils (contributing 54.30% of the total I-TEQ concentrations), implying that dioxins in baseline soils often have an atmospheric fingerprint; and (3) for health risks, the carcinogenic risk and non-carcinogenic risk of dioxins in soils are mostly below acceptable levels, close to or even lower than the results of previous studies. Despite these results being considered as quite preliminary, they have certain implications for local authorities. Future studies can expand the size of the database and the generalizability of the results, and if necessary, establish a long-term dynamic monitoring of dioxins in soils for systematically evaluating the net impact of MSW incineration on environment and human health.

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