Xiaopeng QinTechnical Centre for Soil, Agricultural and Rural Ecology and Environment, Ministry of Ecology and Environment
Xiaopeng Qin
PhD
About
29
Publications
5,187
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469
Citations
Citations since 2017
Introduction
Xiaopeng Qin has completed his PhD (Groundwater Science and Engineering) from China University of Geosciences (Beijing). He is an associate professor in environmental soil chemistry at Technical Centre for Soil, Agricultural and Rural Ecology and Environment, Ministry of Ecology and Environment. He has published 8 articles (First author) in Chemical Engineering Journal, Chemosphere and so on. He received the Outstanding Contribution in Reviewing of Chemical Engineering Journal (March 2018).
Additional affiliations
September 2019 - November 2021
Technical Centre for Soil, Agricultural and Rural Ecology and Environment, Ministry of Ecology and Environment
Position
- Professor (Associate)
January 2017 - August 2019
August 2016 - December 2016
Publications
Publications (29)
Batch experiments were carried out to investigate fractionation and kinetics of humic acid (HA) during adsorption onto hematite and the effect of phosphate. The concentrations and weight-average molecular weight (Mw) of HA in solution were determined by total organic carbon (TOC) analyzer and high-performance size exclusion chromatography (HPSEC)....
Interaction between various compounds in natural systems may influence the adsorption of these species and their environmental fate. In this work, we studied the interactions between a widely used antibiotic levofloxacin (LEV) and phosphate at the surface of goethite (α-FeOOH), which was important to better understand the competitive adsorption of...
The fractionation and replacement of humic acid (HA) during its interactions with goethite (or goethite-coated sand) were conducted using batch and column experiments. The weight-average molecular weight (Mw) of HA in solutions was determined by a high performance size exclusion chromatography (HPSEC). The E2/E3 (absorbance ratio at 250 nm and 365...
Adsorption of levofloxacin (LEV) to goethite in the pH range of 3–10, and in the absence or presence of natural organic matter (NOM) represented by nine types of humic acid (HA) and fulvic acid (FA), was studied using batch experiments. The adsorption of LEV to goethite was weak and showed a maximum around pH 5.8. Adding NOM to goethite strongly in...
Adsorption and transport of levofloxacin (LEV) and ofloxacin (OFL) enantiomers in a matrix containing goethite and natural organic matter (NOM) were investigated using batch and column experiments. In batch studies, competition and enantioselectivity were observed in the adsorption of LEV and OFL. Enantioselectivity upon adsorption was investigated...
Ammonia nitrogen (NH4+-N) is widely found in aquifers with strong reducibility or poor adsorptivity as a dissolved inorganic nitrogen pollutant. The application of adsorbents with effective long-term in situ bioregeneration as permeable reactive barrier (PRB) media for nitrogen removal has raised concern. In this study, the advantage of natural dia...
The ionic strength of infiltration water changes with the seasonal alternation of irrigation sources. In this study, reactivity changes of birnessite-coated sand with the fluctuations of ionic strength of infiltration water (i.e. from groundwater to rainwater) and the involved mechanism were investigated through column experiments. Birnessite-coate...
The removal of lincomycin (LIN) from aqueous solution by birnessite was investigated by batch experiments. When the dosage of birnessite is 500 mg L-1 and the initial concentration of LIN is 15.5 μmol L-1, more than 90% of LIN was removed within 240 min at pH 4.90. Under different conditions, the reactions were well fitted with the second-order mod...
Groundwater is commonly used for drinking, irrigation, and industry. However, few studies have been reported about the screening of antibiotics in the groundwater, which may have the potential to harm human health. In our study, 107 groundwater samples were collected in three typical Karst regions of southwest China. The 35 antibiotics were extract...
Environmental contextThe concentration, types and distribution of antibiotics in soils can have environmental effects and can be modelled using laboratory systems. Adsorption of ofloxacin (OFL) and levofloxacin (LEV) enantiomers to goethite can probe this behaviour and each binds differently to the solid phase. The different behaviour of LEV and OF...
Diclofenac (DCF), a widely used non-steroidal anti-inflammatory, reacted readily with birnessite under mild conditions, and the pseudo first order kinetic constants achieved 8.84 × 10⁻² hr⁻¹. Five products of DCF including an iminoquinone product (2,5-iminoquinone-diclofenac) and four dimer products were observed and identified by tandem mass spect...
In this study, the removal of diclofenac (DCF) from aqueous phase by birnessite, a layered manganese oxide, was investigated by batch experiments. The results indicated that 90% of DCF was removed by birnessite within 4 h in different initial concentrations of DCF, and the kinetic experiment data were well fitted with pseudo-first-order kinetic mod...
A simple and rapid method was developed for the analysis of ofloxacin enantiomers by chiral ligand exchange-high performance liquid chromatography (CLE-HPLC). In addition, the influences of common cations (Ca2+, Mg2+, Fe3+, Zn2+) and the content of humic acid (HA) on the separation were investigated. The separation was carried out on a C18 column (...
The concentrations of 16 priority polycyclic aromatic hydrocarbons (PAHs) were measured in 128 surface soil samples from Xiangfen County, northern China. The total mass concentration of these PAHs ranged from 52 to 10,524 ng/g, with a mean of 723 ng/g. Four-ring PAHs contributed almost 50% of the total PAH burden. A self-organizing map and positive...
The adsorption of diclofenac (DCF), one of the widely used non-steroidal anti-inflammatory drugs, onto the surface of goethite was investigated with batch experiments. The adsorption at different pH values (5.3, 7.4, and 10.0) were well fitted with the pseudo-second-order model. The results showed that the adsorption of DCF onto goethite was strong...
We collected and analyzed 128 surface soil samples from Xiangfen County for dichlorodiphenyltrichloroethane (DDT), dichlorodiphenyldichloroethane (DDD), and dichlorodiphenyldichloroethylene (DDE). Total DDT concentrations (DDTs; sum of p,p'-DDD, p,p'-DDE, and p,p'-DDT) ranged from ND to 427.81 ng g(-1) (dry weight, dw), with a mean of 40.26 ng g(-1...
Batch experiments were conducted to investigate the adsorption of a widely used fluoroquinolone antibiotic levofloxacin (LEV) to goethite and effects of nitrate, sulfate, small organic acids, and humic acid (HA). The concentrations of LEV and small organic acids in single systems or mixtures were determined by a high-performance liquid chromatograp...
Soil environmental criteria values are an important basis for establishing soil quality standards and making soil quality assessments, and are very useful for protecting groundwater. Column experiments were conducted to study the migration of antimony (Sb) in primosol soil from Beijing. The two-site nonequilibrium model was calculated using the CXT...
In order to investigate a green, highly efficient and environmentally-friendly technology for remediation of decabromodiphenyl ether-contaminated soils, charcoal was used as both the effluent adsorption and thermal source in the treatment process of decabromodiphenyl ether-contaminated soils on the basis of conventional thermal desorption technolog...
Purpose
Antimony (Sb) contamination in the environment is a worldwide concern. To address such contamination issues, we studied the adsorption of Sb in four different types of soils. We investigated the main chemical and physical factors that influenced the adsorption of Sb, and distinguished between the different adsorption abilities of naturally...
Thermal treatments are the primary technologies used to remove persistent organic pollutants from contaminated solids. The high energy consumption during continuous heating, required cost for treating the exhaust gas, and potential formation of secondary pollutants during combustion have prevented their implementation. A novel successive self-propa...
The migration and chemical transformation of Pb, Ag, Bi, In, Sb and Sn in four soils were investigated using lysimeter experiments. The polluted soils were added to the soil surface and were exposed to the natural environment to ensure that they were at or close to field capacity for four years. The results showed that: 1) Compared with the backgro...
In the environment, antibiotics are a group of new organic contaminants. In the vadose zone, their adsorption on a kind of common iron mineral goethite is very important. In this study, effects of pH, Ca2+, phosphate, and natural organic matter (NOM) on levofloxacin (LEV) adsorption to goethite were investigated, and the interactions between NOM an...
Batch experiments were conducted to investigate adsorption of humic acid (HA) on a commercial hematite. The point of zero charge (PZC) and specific surface area of hematite were 9.17 ± 0.25 and 5.22 ± 0.04 m2 g−1, respectively. The concentrations of HA in solutions were quantified by the ultraviolet–visible spectrophotometer, and molecular weight (...
In order to meet the field sample measurements and laboratory research, a simple, stable, and popular high performance liquid chromatographic (HPLC) method was established for the determination of the concentrations of two fluoroquinolone antibiotics in water samples simultaneously and rapidly. Thus, it could provide valuable information for other...
An accurate and fast method for simultaneous determination of small organic acids and much larger humic acids was developed using high performance size exclusion chromatography. Two small organic acids, i.e. salicylic acid and 2,3-dihydroxybenzoic acid, and one purified humic acid material were used in this study. Under the experimental conditions,...
Nitrate contamination in groundwater has become a major environmental and health problem worldwide. The aim of the present study is to remediate groundwater contaminated by nitrate and develop potential reactive materials to be used in PRBs (Permeable Reactive Barriers). A new approach was proposed for abiotic groundwater remediation by reactive ma...
Questions
Question (1)
I often read new relevant articles in ResearchGate, with the computer. Sometimes, I would like to read when I am travelling in train, going home by bus, or having a rest on the bed, so a ResearchGate APP for mobile phone may be needed. Until now (April 14, 2020), there is only the ResearchGate APP for Apple, and no one for Android. I have been using an Android phone, perhaps some authors also use Android, but not sure whether you have met the same situation. I suggest the design of ResearchGate APP for Android. Thank you.
