Fenton process-affected transformation of roxarsone in paddy rice soils: Effects on plant growth and arsenic accumulation in rice grain

Qin, Junhao; Li, Huashou; Lin, Cheng‐Fang

doi:10.1016/j.ecoenv.2016.03.047

Cited by 15 publications

(2 citation statements)

References 31 publications

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“…However, given the fact that PPD-Qs in waterbodies, in particular, in urban rivers, may come mainly from storm runoff, roadway runoff, and urban runoff , rather than atmospheric deposition, other natural transformation pathways of PPDs to PPD-Qs in the aquatic environment could also exist. As the ingredients (Fe 2+ and rainwater-borne H 2 O 2 ) for the Fenton reaction are naturally present in open waters, − we infer that natural Fenton oxidation-driven transformation may be another pathway for the formation of PPD-Qs in natural waters. Future studies are needed to test this hypothesis.…”

Section: Resultsmentioning

confidence: 93%

Widespread Occurrence and Transport of p-Phenylenediamines and Their Quinones in Sediments across Urban Rivers, Estuaries, Coasts, and Deep-Sea Regions

Zeng

Sun

et al. 2023

Environ. Sci. Technol.

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p-Phenylenediamines (PPDs) are widely used as antioxidants in tire rubber, and their derived quinone transformation products (PPD-Qs) may pose a threat to marine ecosystems. A compelling example is N-(1,3-dimethylbutyl)-N′phenyl-p-phenylenediamine (6PPD)-derived quinone, called 6PPD-Q, as the causal toxicant for stormwater-linked acute mortality toward coho salmon. However, the knowledge of the cooccurrences of PPDs and PPD-Qs and their transport from freshwater to oceanic waterbodies on a large geographical scale remains unknown. Herein, we performed the first large-scale survey of these chemicals in sediments across urban rivers, estuaries, coasts, and deep-sea regions. Our results demonstrated that seven PPDs and four PPD-Qs are ubiquitously present in riverine, estuarine, and coastal sediments, and most of them also occur in deep-sea sediments. The most dominant chemicals of concern were identified as 6PPD and 6PPD-Q. Total sedimentary concentrations of PPDs and PPD-Qs presented a clear spatial trend with decreasing levels from urban rivers (medians: 39.7 and 15.2 ng/g) to estuaries (14.0 and 5.85 ng/g) and then toward coasts (9.47 and 2.97 ng/g) and deep-sea regions (5.24 and 3.96 ng/g). Interestingly, spatial variation in the ratios of 6PPD to 6PPD-Q (R 6PPD/6PPD-Q ) also presented a clear decreasing trend. Our field measurements implied that riverine outflows of PPDs and PPD-Qs may be an important route to transport these tire rubber-derived chemicals to coastal and open oceans.

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Section: Resultsmentioning

confidence: 93%

Widespread Occurrence and Transport of p-Phenylenediamines and Their Quinones in Sediments across Urban Rivers, Estuaries, Coasts, and Deep-Sea Regions

Zeng

Sun

et al. 2023

Environ. Sci. Technol.

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“…Only As(III) was detected in garland chrysanthemum shoots, but both As(III) and As(V) were detected in the roots [30][31][32][33]. Applying phosphorus or nitrogen fertilizer to farmland can increase arsenic absorption by crops, but adding Fenton reagents to soil can decrease arsenic absorption and enrichment in rice [34]. Soil containing abundant free iron oxides and/or with a high pH causes straight-head disorder in rice to be more likely when ROX is present [35].…”

Section: Enrichment Of Arsenic Supplied By Roxmentioning

confidence: 99%

Environmental Behavior and Remediation Methods of Roxarsone

Liu

Wen

et al. 2022

Applied Sciences

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Roxarsone (ROX) is used extensively in the broiler chicken industry, and most is excreted in poultry litter. ROX degradation produces inorganic arsenic, which causes arsenic contamination of soil and aquatic environment. Furthermore, elevated arsenic concentrations are found in livers of chickens fed ROX. Microorganisms, light, and ions are the main factors that promote ROX degradation in the environment. The adsorption of ROX on different substances and its influencing factors have also been studied extensively. Additionally, the remediation method, combining adsorption and degradation, can effectively restore ROX contamination. Based on this, the review reports the ecological hazards, discussed the transformation and adsorption of ROX in environmental systems, documents the biological response to ROX, and summarizes the remediation methods of ROX contamination. Most previous studies of ROX have been focused on identifying the mechanisms involved under theoretical conditions, but more attention should be paid to the behavior of ROX under real environmental conditions, including the fate and transport of ROX in the real environment. ROX remediation methods at real contaminated sites should also be assessed and verified. The summary of previous studies on the environmental behavior and remediation methods of ROX is helpful for further research in the future.

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Enhanced surface Fenton degradation of BPA in soil with a high pH

Feng

Chai

et al. 2019

Chemosphere

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Fenton process-affected transformation of roxarsone in paddy rice soils: Effects on plant growth and arsenic accumulation in rice grain

Cited by 15 publications

References 31 publications

Widespread Occurrence and Transport of p-Phenylenediamines and Their Quinones in Sediments across Urban Rivers, Estuaries, Coasts, and Deep-Sea Regions

Widespread Occurrence and Transport of p-Phenylenediamines and Their Quinones in Sediments across Urban Rivers, Estuaries, Coasts, and Deep-Sea Regions

Environmental Behavior and Remediation Methods of Roxarsone

Enhanced surface Fenton degradation of BPA in soil with a high pH

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