In situ investigation into surfactant effects on the clearance of polycyclic aromatic hydrocarbons adsorbed onto soybean leaf surfaces

Sun, Haifeng; Wang, Weipeng; Guo, Shuai; Zhang, Yong

doi:10.1016/j.envpol.2016.01.036

Cited by 14 publications

(6 citation statements)

References 31 publications

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“…First, NPAHs had a relatively stronger affinity to plant leaf surfaces relative to parent PAHs, since NPAHs have lower vapor pressures and higher K OA values. Second, the k P values of NPAHs (1-NPyr, 0.0944 ± 0.0004) observed in the present study were much greater than those of parent PAHs (Pyr, 0.0145 ± 0.0012 h –1 ) reported previously . From Table , the initial concentrations of NPAHs on lettuce leaf surfaces had no significant impact on the k p values ( P > 0.05), and interchemical variability was observed in terms of k p with the mean values of 0.2969 ± 0.0017 and 0.0944 ± 0.0004 h –1 for 9-NAnt and 1-NPyr, respectively.…”

Section: Resultscontrasting

confidence: 62%

“…This observation was significantly different from the clearance of parent PAHs adsorbed on mangrove and crop leaf surfaces that was characterized with fast and slow depuration phases . Compared with photodegradation, volatilization dominated the disappearance of PAHs on plant leaf surfaces during the fast phase . The different observations between NPAHs and parent PAHs could be explained by two aspects.…”

Section: Resultsmentioning

confidence: 71%

“…Second, the k P values of NPAHs (1-NPyr, 0.0944 ± 0.0004) observed in the present study were much greater than those of parent PAHs (Pyr, 0.0145 ± 0.0012 h −1 ) reported previously. 20 From Table 2, the initial concentrations of NPAHs on lettuce leaf surfaces had no significant impact on the k p values (P > 0.05), and interchemical variability was observed in terms of k p with the mean values of 0.2969 ± 0.0017 and 0.0944 ± 0.0004 h −1 for 9-NAnt and 1-NPyr, respectively. Apparently, the k p followed the sequence of 1-NPyr < 9-NAnt (P > 0.05).…”

Section: ■ Results and Discussionmentioning

confidence: 91%

“…27 Compared with photodegradation, volatilization dominated the disappearance of PAHs on plant leaf surfaces during the fast phase. 20 The different observations between NPAHs and parent PAHs could be explained by two aspects. First, NPAHs had a relatively stronger affinity to plant leaf surfaces to parent PAHs, since NPAHs have lower vapor pressures and higher K OA values.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

“…The silts were washed away from the lettuce leaf surfaces using tap water and ultrapure water three times successively. Next, the detection areas that uniformly located in the front, middle, and back of lettuce leaf surfaces were made according to our reported method . A circle with an area of 0.28 cm 2 was used as the detection unit of “spots”, essentially in accord with the area of the fiber-optic probe.…”

Section: Methodsmentioning

confidence: 99%

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The Kinetics and Mechanisms for Photodegradation of Nitrated Polycyclic Aromatic Hydrocarbons on Lettuce Leaf Surfaces: An In Vivo Study

Sun

Wang

Nan

et al. 2019

J. Agric. Food Chem.

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Insights into the environmental fates of nitrated polycyclic aromatic hydrocarbons (NPAHs) in edible vegetables are of great significance for better evaluating human exposure to NPAHs through the dietary pathway. In this work, a fluorescence quenching method using graphene quantum dots as a fluorescent probe was first applied for the in vivo determination of 9-nitroanthracene (9-NAnt) and 1-nitropyrene (1-NPyr) adsorbed on the leaf surfaces of living lettuce (Lactuca sativa L.) seedlings. Moreover, the photolysis kinetics and mechanisms of the two adsorbed NPAHs were discussed. The photodegradation kinetics followed the pseudo-first-order equation, and the photodegradation half-life of 1-NPyr (7.4 ± 0.2 h) was greater than that of 9-NAnt (2.3 ± 0.1 h). Anthraquinone and pyrenediones were identified to be the main photolytic products of 9-NAnt and 1-NPyr, respectively. Intramolecular rearrangement was the most reasonable mechanism for the NPAH photolysis. The photolysis-driven degradation exhibited a key role in scavenging NPAHs from the vegetable leaf, indicating the reduction of NPAH transportation in the food chain.

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Section: Resultscontrasting

confidence: 62%

Section: Resultsmentioning

confidence: 71%

Section: ■ Results and Discussionmentioning

confidence: 91%

Section: ■ Results and Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

See 3 more Smart Citations

The Kinetics and Mechanisms for Photodegradation of Nitrated Polycyclic Aromatic Hydrocarbons on Lettuce Leaf Surfaces: An In Vivo Study

Sun

Wang

Nan

et al. 2019

J. Agric. Food Chem.

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Comparisons of three plant species in accumulating polycyclic aromatic hydrocarbons (PAHs) from the atmosphere: a review

Huang

Dai

Zhou

et al. 2018

Environ Sci Pollut Res

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Plant leaves play a key role in the accumulation of PAHs, as they are able to capture PAHs from the air. In this paper, the mechanism, including absorption and adsorption, for plants to scavenge PAHs from the air was reviewed. Moreover, the differences of PAHs accumulating capability are mainly compared among three representative plant species, including pine needles, Holm oak leaves, and moss. On the whole, it is shown that oak leaves present the strongest PAHs accumulating capability for total PAHs among three plants species. Oak leaves and pine needles show higher accumulating tendency for light and medium molecular weight PAHs, whereas moss presents stronger accumulating tendency for heavy molecular weight PAHs. Environmental factors (i.e., temperature, seasonality, and photolysis) also account for the process of PAHs transferred from air to plants. With the temperature climbing, the concentration of PAHs in the air will increase. Due to the meteorological conditions and the human activities changed with seasons, it was shown that the PAHs were greatly accumulated in leaf surface in winter than in summer. Photolysis was also able to influence the PAHs on leaf surface, which are significant to this process. In conclusion, oak, pine, and moss can be used to filter PAHs when considering urban landscaping. Besides combining the traditional analytical methods with in situ determination, there might be able to provide a novel method to further study the specific absorption mechanisms. The accumulation of PAHs in crop leaf surface related to the application of surfactants is also worth studying.

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How surfactants affect the depuration of polycyclic aromatic hydrocarbons adsorbed on the mangrove leaf surfaces: insight from an in situ method

Guo

Wei

Zhu

et al. 2022

Environ Sci Pollut Res

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In situ investigation into surfactant effects on the clearance of polycyclic aromatic hydrocarbons adsorbed onto soybean leaf surfaces

Cited by 14 publications

References 31 publications

The Kinetics and Mechanisms for Photodegradation of Nitrated Polycyclic Aromatic Hydrocarbons on Lettuce Leaf Surfaces: An In Vivo Study

The Kinetics and Mechanisms for Photodegradation of Nitrated Polycyclic Aromatic Hydrocarbons on Lettuce Leaf Surfaces: An In Vivo Study

Comparisons of three plant species in accumulating polycyclic aromatic hydrocarbons (PAHs) from the atmosphere: a review

How surfactants affect the depuration of polycyclic aromatic hydrocarbons adsorbed on the mangrove leaf surfaces: insight from an in situ method

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