The Experts below are selected from a list of 204 Experts worldwide ranked by ideXlab platform
Kexian Chen - One of the best experts on this subject based on the ideXlab platform.
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Quantitative structure‐retention relationships of the chromatographic retentions of Phthalic Acid Ester contaminants in foods
Journal of separation science, 2019Co-Authors: Qianqian Shen, Wenwen Tao, Yujie Guo, Shijia Wang, Yanfei Wang, Er′mei Zheng, Zhongxiu Chen, Kexian ChenAbstract:The harmful health effects caused by Phthalic Acid Esters have been supported from the increasing scientific evidence, developing the efficient methodologies to monitor the levels of Phthalic Acid Esters in various foods become especially important from the aspects of human exposure assessment and their migration mechanistic understanding. In this study, quantitative structure-retention relationship studies on both the gas and liquid chromatographic retention times of 23 Phthalic Acid Esters were performed by genetic function approximation, and the optimal quantitative structure-retention relationship models (r2 > 0.980, r2CV > 0.960, and r2pred > 0.865) passed the statistical tests of cross-validation, randomization, external prediction, Roy' rm2 metrics, Golbraikh-Tropsha' criteria and applicability domain. The established predictive models elucidate the structural requirements for the retention of Phthalic Acid Esters over different chromatographic columns, which were finally used to predict the retention times of 11 new Phthalic Acid Esters. Hopefully, this work could provide useful guidelines for better understanding and accurate prediction of the retention behavior of undetermined Phthalic Acid Esters when lacking standard samples or under poor experimental conditions, and make the simultaneous identification and quantification of numerous Phthalic Acid Esters possible.
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quantitative structure retention relationships of the chromatographic retentions of Phthalic Acid Ester contaminants in foods
IEEE Journal of Solid-state Circuits, 2019Co-Authors: Qianqian Shen, Wenwen Tao, Yujie Guo, Shijia Wang, Yanfei Wang, Zhongxiu Chen, Er Mei Zheng, Kexian ChenAbstract:The harmful health effects caused by Phthalic Acid Esters have been supported from the increasing scientific evidence, developing the efficient methodologies to monitor the levels of Phthalic Acid Esters in various foods become especially important from the aspects of human exposure assessment and their migration mechanistic understanding. In this study, quantitative structure-retention relationship studies on both the gas and liquid chromatographic retention times of 23 Phthalic Acid Esters were performed by genetic function approximation, and the optimal quantitative structure-retention relationship models (r2 > 0.980, r2CV > 0.960, and r2pred > 0.865) passed the statistical tests of cross-validation, randomization, external prediction, Roy' rm2 metrics, Golbraikh-Tropsha' criteria and applicability domain. The established predictive models elucidate the structural requirements for the retention of Phthalic Acid Esters over different chromatographic columns, which were finally used to predict the retention times of 11 new Phthalic Acid Esters. Hopefully, this work could provide useful guidelines for better understanding and accurate prediction of the retention behavior of undetermined Phthalic Acid Esters when lacking standard samples or under poor experimental conditions, and make the simultaneous identification and quantification of numerous Phthalic Acid Esters possible.
Qianqian Shen - One of the best experts on this subject based on the ideXlab platform.
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Quantitative structure‐retention relationships of the chromatographic retentions of Phthalic Acid Ester contaminants in foods
Journal of separation science, 2019Co-Authors: Qianqian Shen, Wenwen Tao, Yujie Guo, Shijia Wang, Yanfei Wang, Er′mei Zheng, Zhongxiu Chen, Kexian ChenAbstract:The harmful health effects caused by Phthalic Acid Esters have been supported from the increasing scientific evidence, developing the efficient methodologies to monitor the levels of Phthalic Acid Esters in various foods become especially important from the aspects of human exposure assessment and their migration mechanistic understanding. In this study, quantitative structure-retention relationship studies on both the gas and liquid chromatographic retention times of 23 Phthalic Acid Esters were performed by genetic function approximation, and the optimal quantitative structure-retention relationship models (r2 > 0.980, r2CV > 0.960, and r2pred > 0.865) passed the statistical tests of cross-validation, randomization, external prediction, Roy' rm2 metrics, Golbraikh-Tropsha' criteria and applicability domain. The established predictive models elucidate the structural requirements for the retention of Phthalic Acid Esters over different chromatographic columns, which were finally used to predict the retention times of 11 new Phthalic Acid Esters. Hopefully, this work could provide useful guidelines for better understanding and accurate prediction of the retention behavior of undetermined Phthalic Acid Esters when lacking standard samples or under poor experimental conditions, and make the simultaneous identification and quantification of numerous Phthalic Acid Esters possible.
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quantitative structure retention relationships of the chromatographic retentions of Phthalic Acid Ester contaminants in foods
IEEE Journal of Solid-state Circuits, 2019Co-Authors: Qianqian Shen, Wenwen Tao, Yujie Guo, Shijia Wang, Yanfei Wang, Zhongxiu Chen, Er Mei Zheng, Kexian ChenAbstract:The harmful health effects caused by Phthalic Acid Esters have been supported from the increasing scientific evidence, developing the efficient methodologies to monitor the levels of Phthalic Acid Esters in various foods become especially important from the aspects of human exposure assessment and their migration mechanistic understanding. In this study, quantitative structure-retention relationship studies on both the gas and liquid chromatographic retention times of 23 Phthalic Acid Esters were performed by genetic function approximation, and the optimal quantitative structure-retention relationship models (r2 > 0.980, r2CV > 0.960, and r2pred > 0.865) passed the statistical tests of cross-validation, randomization, external prediction, Roy' rm2 metrics, Golbraikh-Tropsha' criteria and applicability domain. The established predictive models elucidate the structural requirements for the retention of Phthalic Acid Esters over different chromatographic columns, which were finally used to predict the retention times of 11 new Phthalic Acid Esters. Hopefully, this work could provide useful guidelines for better understanding and accurate prediction of the retention behavior of undetermined Phthalic Acid Esters when lacking standard samples or under poor experimental conditions, and make the simultaneous identification and quantification of numerous Phthalic Acid Esters possible.
Hailong Wang - One of the best experts on this subject based on the ideXlab platform.
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animal carcass and wood derived biochars improved nutrient bioavailability enzyme activity and plant growth in metal Phthalic Acid Ester co contaminated soils a trial for reclamation and improvement of degraded soils
Journal of Environmental Management, 2020Co-Authors: Hanbo Chen, Gerty Gielen, Hailong Wang, Xing Yang, Binoy Sarkar, Sabry M Shaheen, Nanthi BolanAbstract:Reclamation of degraded soils such as those with low organic carbon content and soils co-contaminated with toxic elements and Phthalic Acid Esters (PAEs) is of great concern. Little is known about the efficiency of plant- and animal-derived biochars for improving plant growth and physicochemical and biological properties of co-contaminated soils, particularly under low content of organic matter. Hence, a pot trial was carried out by growing pak choi (Brassica chinensis L.) to assess the influence of different doses (0, 0.5, 1, 2, and 4%) of animal (pig carcass) and wood (Platanus orientalis) derived biochars on soil properties, nutrient availabilities, plant growth, and soil enzyme activities in two soils containing low (LOC) and high (HOC) organic carbon contents and co-contaminated with di-(2-ethylhexyl) Phthalic Acid (DEHP) and cadmium (Cd). Biochar applications improved pH, salinity, carbon content, and cation exchange capacity of both soils. Addition of biochars significantly increased the bioavailability and uptake of phosphorus and potassium in the plants in both soils with greater effects from pig biochar than wood biochar. Biochar additions also significantly enhanced urease, sucrase, and catalase activities, but suppressed Acid phosphatase activity in both soils. The impact of pig biochar was stronger on urease and Acid phosphatase, while the wood biochar was more effective with sucrase and catalase activities. The biomass yield of pak choi was significantly increased after biochar addition to both soils, especially in 2% pig biochar treatment in the LOC soil. The positive response of soil enzymes activities and plant growth for biochar addition to the Cd and DEHP co-contaminated soils indicate that both biochars, particularly the pig biochar can mitigate the risk of these pollutants and prove to be eco-friendly and low-cost amendments for reclaiming these degraded soils.
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Contamination and remediation of Phthalic Acid Esters in agricultural soils in China: a review
Agronomy for Sustainable Development, 2015Co-Authors: Gerty Gielen, Nanthi S. Bolan, Xiaokai Zhang, Hua Qin, Huagang Huang, Hailong WangAbstract:Phthalic Acid Esters have been used as plasticizers in numerous products and classified as endocrine-disrupting compounds. As China is one of the largest consumers of Phthalic Acid Esters, some human activities may lead to the accumulation of Phthalic Acid Esters in soil and result in contamination. Therefore, it is necessary for us to understand the current contamination status and to identify appropriate remediation technologies. Here, we reviewed the potential sources, distribution, and contamination status of Phthalic Acid Esters in soil. We then described the ecological effect and human risk of Phthalic Acid Esters and finally provided technologies to remediate Phthalic Acid Esters. We found that (1) the application of plastic agricultural films, municipal biosolids, agricultural chemicals, and wastewater irrigation have been identified as the main sources for Phthalic Acid Ester contamination in agricultural soil; (2) the distribution of Phthalic Acid Esters in soils is determined by factors such as anthropogenic behaviors, soil type, properties of Phthalic Acid Esters, seasonal variation, etc.; (3) the concentrations of Phthalic Acid Esters in soil in most regions of China are exceeding the recommended values of soil cleanup guidelines used by the US Environmental Protection Agency (US EPA), causing Phthalic Acid Ester in soils to contaminate vegetables; (4) Phthalic Acid Esters are toxic to soil microbes and enzymes; and (5) Phthalic Acid Ester-contaminated soil can be remedied by degradation, phytoremediation, and adsorption.
Gerty Gielen - One of the best experts on this subject based on the ideXlab platform.
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animal carcass and wood derived biochars improved nutrient bioavailability enzyme activity and plant growth in metal Phthalic Acid Ester co contaminated soils a trial for reclamation and improvement of degraded soils
Journal of Environmental Management, 2020Co-Authors: Hanbo Chen, Gerty Gielen, Hailong Wang, Xing Yang, Binoy Sarkar, Sabry M Shaheen, Nanthi BolanAbstract:Reclamation of degraded soils such as those with low organic carbon content and soils co-contaminated with toxic elements and Phthalic Acid Esters (PAEs) is of great concern. Little is known about the efficiency of plant- and animal-derived biochars for improving plant growth and physicochemical and biological properties of co-contaminated soils, particularly under low content of organic matter. Hence, a pot trial was carried out by growing pak choi (Brassica chinensis L.) to assess the influence of different doses (0, 0.5, 1, 2, and 4%) of animal (pig carcass) and wood (Platanus orientalis) derived biochars on soil properties, nutrient availabilities, plant growth, and soil enzyme activities in two soils containing low (LOC) and high (HOC) organic carbon contents and co-contaminated with di-(2-ethylhexyl) Phthalic Acid (DEHP) and cadmium (Cd). Biochar applications improved pH, salinity, carbon content, and cation exchange capacity of both soils. Addition of biochars significantly increased the bioavailability and uptake of phosphorus and potassium in the plants in both soils with greater effects from pig biochar than wood biochar. Biochar additions also significantly enhanced urease, sucrase, and catalase activities, but suppressed Acid phosphatase activity in both soils. The impact of pig biochar was stronger on urease and Acid phosphatase, while the wood biochar was more effective with sucrase and catalase activities. The biomass yield of pak choi was significantly increased after biochar addition to both soils, especially in 2% pig biochar treatment in the LOC soil. The positive response of soil enzymes activities and plant growth for biochar addition to the Cd and DEHP co-contaminated soils indicate that both biochars, particularly the pig biochar can mitigate the risk of these pollutants and prove to be eco-friendly and low-cost amendments for reclaiming these degraded soils.
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Contamination and remediation of Phthalic Acid Esters in agricultural soils in China: a review
Agronomy for Sustainable Development, 2015Co-Authors: Gerty Gielen, Nanthi S. Bolan, Xiaokai Zhang, Hua Qin, Huagang Huang, Hailong WangAbstract:Phthalic Acid Esters have been used as plasticizers in numerous products and classified as endocrine-disrupting compounds. As China is one of the largest consumers of Phthalic Acid Esters, some human activities may lead to the accumulation of Phthalic Acid Esters in soil and result in contamination. Therefore, it is necessary for us to understand the current contamination status and to identify appropriate remediation technologies. Here, we reviewed the potential sources, distribution, and contamination status of Phthalic Acid Esters in soil. We then described the ecological effect and human risk of Phthalic Acid Esters and finally provided technologies to remediate Phthalic Acid Esters. We found that (1) the application of plastic agricultural films, municipal biosolids, agricultural chemicals, and wastewater irrigation have been identified as the main sources for Phthalic Acid Ester contamination in agricultural soil; (2) the distribution of Phthalic Acid Esters in soils is determined by factors such as anthropogenic behaviors, soil type, properties of Phthalic Acid Esters, seasonal variation, etc.; (3) the concentrations of Phthalic Acid Esters in soil in most regions of China are exceeding the recommended values of soil cleanup guidelines used by the US Environmental Protection Agency (US EPA), causing Phthalic Acid Ester in soils to contaminate vegetables; (4) Phthalic Acid Esters are toxic to soil microbes and enzymes; and (5) Phthalic Acid Ester-contaminated soil can be remedied by degradation, phytoremediation, and adsorption.
Shijia Wang - One of the best experts on this subject based on the ideXlab platform.
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Quantitative structure‐retention relationships of the chromatographic retentions of Phthalic Acid Ester contaminants in foods
Journal of separation science, 2019Co-Authors: Qianqian Shen, Wenwen Tao, Yujie Guo, Shijia Wang, Yanfei Wang, Er′mei Zheng, Zhongxiu Chen, Kexian ChenAbstract:The harmful health effects caused by Phthalic Acid Esters have been supported from the increasing scientific evidence, developing the efficient methodologies to monitor the levels of Phthalic Acid Esters in various foods become especially important from the aspects of human exposure assessment and their migration mechanistic understanding. In this study, quantitative structure-retention relationship studies on both the gas and liquid chromatographic retention times of 23 Phthalic Acid Esters were performed by genetic function approximation, and the optimal quantitative structure-retention relationship models (r2 > 0.980, r2CV > 0.960, and r2pred > 0.865) passed the statistical tests of cross-validation, randomization, external prediction, Roy' rm2 metrics, Golbraikh-Tropsha' criteria and applicability domain. The established predictive models elucidate the structural requirements for the retention of Phthalic Acid Esters over different chromatographic columns, which were finally used to predict the retention times of 11 new Phthalic Acid Esters. Hopefully, this work could provide useful guidelines for better understanding and accurate prediction of the retention behavior of undetermined Phthalic Acid Esters when lacking standard samples or under poor experimental conditions, and make the simultaneous identification and quantification of numerous Phthalic Acid Esters possible.
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quantitative structure retention relationships of the chromatographic retentions of Phthalic Acid Ester contaminants in foods
IEEE Journal of Solid-state Circuits, 2019Co-Authors: Qianqian Shen, Wenwen Tao, Yujie Guo, Shijia Wang, Yanfei Wang, Zhongxiu Chen, Er Mei Zheng, Kexian ChenAbstract:The harmful health effects caused by Phthalic Acid Esters have been supported from the increasing scientific evidence, developing the efficient methodologies to monitor the levels of Phthalic Acid Esters in various foods become especially important from the aspects of human exposure assessment and their migration mechanistic understanding. In this study, quantitative structure-retention relationship studies on both the gas and liquid chromatographic retention times of 23 Phthalic Acid Esters were performed by genetic function approximation, and the optimal quantitative structure-retention relationship models (r2 > 0.980, r2CV > 0.960, and r2pred > 0.865) passed the statistical tests of cross-validation, randomization, external prediction, Roy' rm2 metrics, Golbraikh-Tropsha' criteria and applicability domain. The established predictive models elucidate the structural requirements for the retention of Phthalic Acid Esters over different chromatographic columns, which were finally used to predict the retention times of 11 new Phthalic Acid Esters. Hopefully, this work could provide useful guidelines for better understanding and accurate prediction of the retention behavior of undetermined Phthalic Acid Esters when lacking standard samples or under poor experimental conditions, and make the simultaneous identification and quantification of numerous Phthalic Acid Esters possible.