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Potdar RP, Khollam YB, Shaikh SF, Patil SA, Al-Enizi AM, More PS. Europium oxide modified reduced graphene oxide composite for trace detection of hydrogen phosphate ions in soil samples. Talanta 2024; 267:125118. [PMID: 37688897 DOI: 10.1016/j.talanta.2023.125118] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2023] [Revised: 08/03/2023] [Accepted: 08/23/2023] [Indexed: 09/11/2023]
Abstract
The phosphate (PO43-) ion is a constituent of the environment, soil, plants, and animals. There should be a real-time and portable phosphate detection sensor. Herein we propose a colorimetry based sensitive method for hydrogen phosphate (HPO42-) ions detection using europium oxide modified reduced graphene oxide composite (Eu2O3-RGO) and gold nanoparticles (Au NPs). We detect the HPO42- by observing the anti-aggregation of gold nanoparticles. In the presence of a Eu2O3-RGO composite, the Au NPs underwent an aggregation process, causing a colour change of Au NPs from wine red to wine blue. Once Eu-modified RGO was pre-mixed with HPO42- ions and introduced into Au NPs, the Eu nanoparticles in the Eu-modified RGO were attracted to the HPO42- ions. Because of this, the aggregated Au NPs started to anti-aggregate, and the colour of Au NPs changed from wine blue to wine red. The calibration curve of the sensor goes from 0 nM to 500 nM concentration of HPO42- ions. Our sensor has a detection limit of 0.08 nM, which is lower than the reported values. This improved lower detection limit is probably due to the use of RGO, which according to the literature review, can adsorb phosphate ions onto its surface. We optimized the incubation time and europium oxide (Eu2O3) nanoparticle concentration to improve the sensor's sensitivity. Lastly, we tested an agricultural sample using our developed method.
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Affiliation(s)
- Revati P Potdar
- Nanomaterials Application Laboratory, The Institute of Science, Dr. Homi Bhabha State University, Mumbai, 400032, India
| | - Yogesh B Khollam
- Department of Physics, Baburaoji Gholap College, Sangvi, Pune, 411027, Maharashtra, India
| | - Shoyebmohamad F Shaikh
- Department of Chemistry, College of Science, Bld-5, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Supriya A Patil
- Department Nanotechnology & Advanced Materials Engineering, Sejong University, Seoul, 05006, South Korea
| | - Abdullah M Al-Enizi
- Department of Chemistry, College of Science, Bld-5, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Pravin S More
- Nanomaterials Application Laboratory, The Institute of Science, Dr. Homi Bhabha State University, Mumbai, 400032, India.
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2
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Shah MM, Ahmad K, Boota S, Jensen T, La Frano MR, Irudayaraj J. Sensor technologies for the detection and monitoring of endocrine-disrupting chemicals. Front Bioeng Biotechnol 2023; 11:1141523. [PMID: 37051269 PMCID: PMC10083357 DOI: 10.3389/fbioe.2023.1141523] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Accepted: 03/14/2023] [Indexed: 03/29/2023] Open
Abstract
Endocrine-disrupting chemicals (EDCs) are a class of man-made substances with potential to disrupt the standard function of the endocrine system. These EDCs include phthalates, perchlorates, phenols, some heavy metals, furans, dimethoate, aromatic hydrocarbons, some pesticides, and per- and polyfluoroalkyl substances (PFAS). EDCs are widespread in the environment given their frequent use in daily life. Their production, usage, and consumption have increased many-fold in recent years. Their ability to interact and mimic normal endocrine functions makes them a potential threat to human health, aquatics, and wild life. Detection of these toxins has predominantly been done by mass spectroscopy and/or chromatography-based methods and to a lesser extent by advanced sensing approaches such as electrochemical and/or colorimetric methods. Instrument-based analytical techniques are often not amenable for onsite detection due to the lab-based nature of these detecting systems. Alternatively, analytical approaches based on sensor/biosensor techniques are more attractive because they are rapid, portable, equally sensitive, and eco-friendly. Advanced sensing systems have been adopted to detect a range of EDCs in the environment and food production systems. This review will focus on advances and developments in portable sensing techniques for EDCs, encompassing electrochemical, colorimetric, optical, aptamer-based, and microbial sensing approaches. We have also delineated the advantages and limitations of some of these sensing techniques and discussed future developments in sensor technology for the environmental sensing of EDCs.
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Affiliation(s)
- Muhammad Musaddiq Shah
- Department of Biological Sciences, Faculty of Sciences, University of Sialkot, Sialkot, Pakistan
| | - Khurshid Ahmad
- College of Food Sciences and Engineering, Ocean University of China, Qingdao, Shandong, China
| | - Sonia Boota
- Department of Biological Sciences, Faculty of Sciences, University of Sialkot, Sialkot, Pakistan
| | - Tor Jensen
- Biomedical Research Center, Mills Breast Cancer Institute, Carle Foundation Hospital, Urbana, IL, United States
| | - Michael R. La Frano
- Metabolomics Core Facility, Roy J Carver Biotechnology Center, The University of Illinois at Urbana-Champaign, Urbana, IL, United States
| | - Joseph Irudayaraj
- Biomedical Research Center, Mills Breast Cancer Institute, Carle Foundation Hospital, Urbana, IL, United States
- Department of Bioengineering, The University of Illinois at Urbana-Champaign, Urbana, IL, United States
- Micro and Nanotechnology Laboratory, The University of Illinois at Urbana-Champaign, Urbana, IL, United States
- *Correspondence: Joseph Irudayaraj,
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3
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Gan F, Wu K, Ma F, Wei C, Du C. In-situ monitoring of nitrate in industrial wastewater using Fourier transform infrared attenuated total reflectance spectroscopy (FTIR-ATR) coupled with chemometrics methods. Heliyon 2022; 8:e12423. [PMID: 36619407 PMCID: PMC9816775 DOI: 10.1016/j.heliyon.2022.e12423] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Revised: 11/03/2022] [Accepted: 12/09/2022] [Indexed: 12/25/2022] Open
Abstract
Quantitative prediction of nitrate contents in different industrial wastewater was carried out using Fourier transform infrared attenuated total reflectance (FTIR-ATR) spectroscopy. The algorithm of Gaussian deconvolution was applied in the spectral range of 1500-1200 cm-1 to eliminate the background interferences on target information of nitrate, and partial least squares regression (PLSR) model and support vector machine (SVR) model were developed for the prediction of nitrate. The results showed that the PLSR model (Rv 2 = 0.921, RMSEv = 0.351 mg/L, RPDv = 3.56) and SVR model (Rv 2 = 0.856, RMSEv = 0.473 mg/L, RPDv = 3.15) reached excellent prediction accuracy and robustness for electroplating wastewater, and for metallurgical wastewater the SVR model (Rv 2 = 0.916, RMSEv = 1.38 mg/L, RPDv = 3.26) showed a better prediction performance. The PLSR and SVR models exhibited poor prediction accuracy of nitrate for pesticide wastewater and dyeing wastewater due to the strongly interference by carbonate. The spectra pretreatment by deconvolution dramatically improved the prediction models. Therefore, combined with deconvolution spectra pretreatment and chemometrics methods, FTIR-ATR could achieve a fast and effective in-situ monitoring of nitrate in industrial wastewater.
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Affiliation(s)
- Fangqun Gan
- College of Environment and Ecology, Jiangsu Open University, Nanjing, 210017, China
| | - Ke Wu
- College of Environment and Ecology, Jiangsu Open University, Nanjing, 210017, China
| | - Fei Ma
- The State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science Chinese Academy of Sciences, Nanjing, 210008, China
| | - Cuilan Wei
- College of Environment and Ecology, Jiangsu Open University, Nanjing, 210017, China
| | - Changwen Du
- The State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science Chinese Academy of Sciences, Nanjing, 210008, China
- College of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
- Corresponding author.
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4
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Balkanli NE, Isildak I, Inan B, Ozer T, Ozcimen D. Monitoring Microalgal Growth of Chlorella minutissima with a New All Solid-state Contact Nitrate Selective Sensor. Biotechnol Prog 2022; 38:e3247. [PMID: 35202519 DOI: 10.1002/btpr.3247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2021] [Revised: 02/09/2022] [Accepted: 02/15/2022] [Indexed: 11/07/2022]
Abstract
As third generation feedstock, microalgae are microorganisms that can grow only in the optimum conditions. There are parameters including the concentration of macro and microelements in nutrient solution, pH, temperature, and light intensity that have significant impact on microalgal growth. In recent years, various sensing devices has been developed for sensitive measurement of these parameters during microalgal growth. In this study, a new potentiometric nitrate selective sensor was developed to indicate the nitrate uptake of microalgae and the effect of nitrate nutrient on microalgal growth, specifically, and this sensor was successfully applied to determine nitrate concentration in medium during microalgal growth. Moreover, the effects of nitrate, carbonate and phosphate concentration in the growth medium on biomass production of Chlorella minutissima were investigated by using Box-Behnken design method, and optimum conditions were determined for the highest biomass production of microalgae. As a result of the experiments, it was seen that the highest C. minutissima production was achieved using the medium consist of 2.63 g/L NaNO3 , 0.35 g/L Na2 CO3 and 0.4 g/L KH2 PO4. Statistically, it was observed that there was a proportional relationship between the microalgae production and investigated parameters such as carbon, nitrogen and phosphate amounts of culture mediums. The electrode showed a wide linear range between 1.0×10-1 and 5.0×10-5 M with a detection limit of the 5×10-6 M and the response time was found as 10 s. The results showed that developed nitrate selective sensor could be successfully applied for continuous measurement of nitrate in microalgal productions at reduced cost. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Nihat Erdem Balkanli
- Faculty of Chemical and Metallurgical Engineering, Department of Bioengineering, Yildiz Technical University, Davutpasa, Esenler, Istanbul, Turkey
| | - Ibrahim Isildak
- Faculty of Chemical and Metallurgical Engineering, Department of Bioengineering, Yildiz Technical University, Davutpasa, Esenler, Istanbul, Turkey
| | - Benan Inan
- Faculty of Chemical and Metallurgical Engineering, Department of Bioengineering, Yildiz Technical University, Davutpasa, Esenler, Istanbul, Turkey
| | - Tugba Ozer
- Faculty of Chemical and Metallurgical Engineering, Department of Bioengineering, Yildiz Technical University, Davutpasa, Esenler, Istanbul, Turkey
| | - Didem Ozcimen
- Faculty of Chemical and Metallurgical Engineering, Department of Bioengineering, Yildiz Technical University, Davutpasa, Esenler, Istanbul, Turkey
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5
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Lv B, Xu K, Fang C, Yang Q, Li N, Jiang P, Wang W. Study on the performance of laterite in removing graphene oxide contaminants from aqueous solution. JOURNAL OF CHEMICAL RESEARCH 2022. [DOI: 10.1177/17475198211060481] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
To remove graphene oxide contaminant from aqueous solution, laterite was used as an adsorbent to conduct batch adsorption experiments on graphene oxide aqueous solutions. The effects of pH, adsorbent mass, graphene oxide initial concentration, contact time, and temperature on graphene oxide adsorption by laterite were studied predominantly. The results show that graphene oxide adsorption by laterite strongly depends on pH, the kinetic data conforms to the second-order kinetic model, and the isotherm data are in line with Langmuir and Freundlich models. Moreover, temperature increment is more conducive to improving the adsorption capacity. Combined with scanning electron microscopy, transmission electron microscopy, atomic force microscopy, Fourier transform infrared spectroscopy, X-ray diffraction, X-ray photoelectron spectroscopy and Raman microscopic tests, the internal changes of samples before and after adsorption were further revealed. The comprehensive analysis of the above experimental results shows that laterite is a good material, which can effectively remove graphene oxide contamination from aqueous solutions.
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Affiliation(s)
- Beifeng Lv
- School of Civil Engineering, Shaoxing University, Shaoxing, P.R. China
| | - Kaitong Xu
- School of Civil Engineering, Shaoxing University, Shaoxing, P.R. China
| | - Chulei Fang
- School of Civil Engineering, Shaoxing University, Shaoxing, P.R. China
| | - Qingqian Yang
- School of Civil Engineering, Shaoxing University, Shaoxing, P.R. China
| | - Na Li
- School of Civil Engineering, Shaoxing University, Shaoxing, P.R. China
| | - Ping Jiang
- School of Civil Engineering, Shaoxing University, Shaoxing, P.R. China
| | - Wei Wang
- School of Civil Engineering, Shaoxing University, Shaoxing, P.R. China
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6
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Singh S, Anil AG, Kumar V, Kapoor D, Subramanian S, Singh J, Ramamurthy PC. Nitrates in the environment: A critical review of their distribution, sensing techniques, ecological effects and remediation. CHEMOSPHERE 2022; 287:131996. [PMID: 34455120 DOI: 10.1016/j.chemosphere.2021.131996] [Citation(s) in RCA: 44] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Revised: 08/13/2021] [Accepted: 08/22/2021] [Indexed: 06/13/2023]
Abstract
Nitrate pollution is eminent in almost all the developing nations as a result of increased natural activities apart from anthropogenic pollution. The release of nitrates in more than critical quantities into the water bodies causes accretion impacts on living creatures, environmental receptors, and human vigour by accumulation through the food chain. Nitrates have recently acquired researchers' huge attention and extend their roots in environmental contamination of surface and groundwater systems. The presence of nitrate in high concentrations in surface and groundwater triggers several health problems, for instance, methemoglobinemia, diabetes, eruption of infectious disorders, harmfully influence aquatic organisms. Sensing nitrate is an alternate option for monitoring the distribution of nitrate in different water bodies. Here we review electrochemical, spectroscopic, and electrical modes of nitrate sensing. It is concluded that, among the various sensors discussed in this review, FET sensors are the most desirable choice. Their sensitivity, ease of use and scope for miniaturisation are exceptional. Advanced functional materials need to be designed to satiate the growing need for environmental monitoring. Different sources of nitrate contamination in ground and surface water can be estimated using different techniques such as nitrate isotopic composition, co contaminants, water tracers, and other specialized techniques. This review intends to explore the research work on remediation of nitrate from wastewater and soil using different processes such as reverse osmosis, chemical denitrification, biological denitrification, ion exchange, electrodialysis, and adsorption. Denitrification proves as a promising alternative over previously reported techniques in terms of their nitrate removal because of its high cost-effectiveness.
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Affiliation(s)
- Simranjeet Singh
- Interdisciplinary Centre for Water Research (ICWaR), Indian Institute of Science, Bangalore, 56001, India
| | - Amith G Anil
- Department of Material Engineering, Indian Institute of Science, Bangalore, 56001, India
| | - Vijay Kumar
- Department of Chemistry, Central Ayurveda Research Institute, Jhansi, U.P. , India
| | - Dhriti Kapoor
- Department of Botany, Lovely Professional University, Jalandhar, Punjab, 144111, India
| | - S Subramanian
- Department of Material Engineering, Indian Institute of Science, Bangalore, 56001, India
| | - Joginder Singh
- Department of Microbiology, Lovely Professional University, Jalandhar, Punjab, 144111, India.
| | - Praveen C Ramamurthy
- Interdisciplinary Centre for Water Research (ICWaR), Indian Institute of Science, Bangalore, 56001, India.
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7
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Song J, Luo N, Sang Y, Duan C, Cui X. Graphene oxide affects growth and physiological indexes in Larix olgensis seedlings and the soil properties of Haplic Cambisols in Northeast China. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:20869-20882. [PMID: 33409994 DOI: 10.1007/s11356-020-11972-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2020] [Accepted: 12/04/2020] [Indexed: 06/12/2023]
Abstract
Changbai larch (Larix olgensis A. Henry) seedlings growing in a Haplic Cambisol and receiving 0 (Ck), 25, 50, 100, 250, or 500 mg L-1 graphene oxide (GO) were incubated for 30, 40, or 50 days, and the effects of applying GO on the growth and physiological characteristics of the seedlings and soil chemical properties and enzyme activities were investigated. The superoxide anion (except for 25 mg L-1 at 40 days and 50 mg L-1 at 50 days) and hydrogen peroxide contents of the leaves increased at 25-100 mg L-1 GO; however, superoxide dismutase (SOD) and peroxidase (POD) (except for 100 mg L-1 at 50 days) activities, soluble protein (except for 100 mg L-1 at 30 and 40 days), proline (except for 100 mg L-1 at 50 days), as well as seedling biomass (except for stems at 25-100 mg L-1, and leaves and roots at 50-100 mg L-1 for 30 days) all decreased. However, when the seedlings were exposed to 250-500 mg L-1 GO, especially at 40 and 50 days, these trends for tree growth and physiological parameters were reversed, suggesting the beneficial effect of GO at high concentrations on the seedlings. GO decreased the organic matter, alkali-hydrolyzale nitrogen, available phosphorus, and potassium contents of the soil at 40 and 50 days (except for available phosphorus at 50 days), as well as the acid phosphatase, urease (except for 30 days), dehydrogenase, and catalase activities (except for 30 and 40 days); thus, GO may inhibit nitrogen and phosphorus cycling in Haplic Cambisols (except for nitrogen at 30 days).
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Affiliation(s)
- Jinfeng Song
- Key Laboratory of Sustainable Forest Ecosystem Management-Ministry of Education, School of Forestry, Northeast Forestry University, Harbin, 150040, Heilongjiang, China
| | - Na Luo
- Key Laboratory of Sustainable Forest Ecosystem Management-Ministry of Education, School of Forestry, Northeast Forestry University, Harbin, 150040, Heilongjiang, China
| | - Ying Sang
- Key Laboratory of Sustainable Forest Ecosystem Management-Ministry of Education, School of Forestry, Northeast Forestry University, Harbin, 150040, Heilongjiang, China
| | - Chengwei Duan
- Key Laboratory of Sustainable Forest Ecosystem Management-Ministry of Education, School of Forestry, Northeast Forestry University, Harbin, 150040, Heilongjiang, China
| | - Xiaoyang Cui
- Key Laboratory of Sustainable Forest Ecosystem Management-Ministry of Education, School of Forestry, Northeast Forestry University, Harbin, 150040, Heilongjiang, China.
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8
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Wang H, Yuan B, Yin T, Qin W. Alternative coulometric signal readout based on a solid-contact ion-selective electrode for detection of nitrate. Anal Chim Acta 2020; 1129:136-142. [DOI: 10.1016/j.aca.2020.07.019] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Revised: 07/06/2020] [Accepted: 07/11/2020] [Indexed: 01/09/2023]
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9
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Zheng W, Xiao X, Chen B. A nonradical reaction-dominated phenol degradation with peroxydisulfate catalyzed by nitrogen-doped graphene. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 667:287-296. [PMID: 30833234 DOI: 10.1016/j.scitotenv.2019.02.173] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2018] [Revised: 02/10/2019] [Accepted: 02/11/2019] [Indexed: 06/09/2023]
Abstract
Nitrogen doping is a common approach for functionalization of graphene to generate active sites for catalytic reactions. However, the effect of nitrogen content and species within nitrogen-doped graphene (NG) on catalytic phenol oxidation remains largely unaddressed, especially for the peroxidisulfate (PDS) system. In this work, graphene (G), NH3•H2O-reduced graphene (NG-NH3), and N2H4-reduced graphene (NG-N2H4) with different nitrogen contents were synthesized, and their catalytic abilities in inducing PDS was evaluated. The degradation results indicated that nitrogen doping improved the catalytic ability of G and NG-NH3 shows a higher catalytic ability than NG-N2H4, even though they have similar nitrogen contents. Based on the XPS spectra, among all the doped nitrogen species, the graphitic N made the greatest contribution to the catalytic activity. The scavenger and electron paramagnetic resonance results imply a major contribution of a nonradical mechanism in the NG-PDS-phenol reaction system. Finally, the hydroquinone and p-hydroxybenzoic acid were identified as two intermediate products during the degradation. The decrease in total organic carbon concentration (TOC) after reaction confirmed that phenol was mineralized partially in CO2. These findings will guide the applications of NG as a catalyst and enrich our understanding of the PDS-phenol reaction system.
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Affiliation(s)
- Wan Zheng
- Department of Environmental Science, Zhejiang University, Hangzhou, Zhejiang 310058, China; Zhejiang Provincial Key Laboratory of Organic Pollutant Process and Control, Hangzhou, Zhejiang 310058, China
| | - Xin Xiao
- Department of Environmental Science, Zhejiang University, Hangzhou, Zhejiang 310058, China; Zhejiang Provincial Key Laboratory of Organic Pollutant Process and Control, Hangzhou, Zhejiang 310058, China
| | - Baoliang Chen
- Department of Environmental Science, Zhejiang University, Hangzhou, Zhejiang 310058, China; Zhejiang Provincial Key Laboratory of Organic Pollutant Process and Control, Hangzhou, Zhejiang 310058, China.
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10
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Gao M, Yang Y, Song Z. Effects of graphene oxide on cadmium uptake and photosynthesis performance in wheat seedlings. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2019; 173:165-173. [PMID: 30771660 DOI: 10.1016/j.ecoenv.2019.01.093] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2018] [Revised: 01/21/2019] [Accepted: 01/28/2019] [Indexed: 05/24/2023]
Abstract
Graphene oxide (GO) is extensively used in various fields because of its versatility. The presence of GO in the environment enhances the toxicity of toxicants or pollutants. Cadmium (Cd) and GO pollution is a problem in aquatic environment, which should be solved. We investigated the toxic effects of Cd on photosynthesis and oxidative stress in wheat seedlings in the presence of GO, by measuring seedling biomass, Cd content, photosynthesis, reactive oxygen species (ROS) level, antioxidant enzyme activities, and malondialdehyde (MDA) content. At low concentrations, GO alone had limited effects, but at concentrations > 20 mg L-1, seedlings were negatively affected. Under combined Cd-GO treatment, GO was significantly toxic at only 5 mg L-1 concentration, and increasing concentration significantly increased Cd accumulation and decreased biomass. The net photosynthetic rate, stomatal conductance, transpiration rate, primary maximum photochemical efficiency of photosystem II, actual quantum yield, photosynthetic electron transport rate, chlorophyll content, and ribulose-1,5-bisphosphate carboxylase/oxygenase concentration decreased significantly, whereas intercellular CO2 concentration increased significantly. These changes can be attributed to impairment of ROS level, antioxidant enzyme activities, and MDA level, and toxicity mechanisms are suggested to be due to oxidative stress. The resulting damage to the photosynthetic systems and structures likely contributed to the overall decrease in biomass.
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Affiliation(s)
- Minling Gao
- School of Environmental Science and Engineering, Tianjin Polytechnic University, Tianjin 300387, China; Stockbridge School of Agriculture, University of Masschusetts, Amherst, MA 01003, USA
| | - Yujuan Yang
- School of Environmental Science and Engineering, Tianjin Polytechnic University, Tianjin 300387, China
| | - Zhengguo Song
- Agro-Environmental Protection Institute, Ministry of Agriculture of China, Tianjin 300191, China.
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11
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Su SG, Cheng HY, Zhu TT, Wang HC, Wang AJ. A novel bioelectrochemical method for real-time nitrate monitoring. Bioelectrochemistry 2019; 125:33-37. [DOI: 10.1016/j.bioelechem.2018.09.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2018] [Revised: 09/04/2018] [Accepted: 09/06/2018] [Indexed: 02/03/2023]
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12
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Potential application of doped hexa-peri-hexabenzocoronene as NH3 gas sensor: a computational investigation. Struct Chem 2018. [DOI: 10.1007/s11224-018-1076-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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13
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Pham TB, Bui H, Le HT, Pham VH. Characteristics of the Fiber Laser Sensor System Based on Etched-Bragg Grating Sensing Probe for Determination of the Low Nitrate Concentration in Water. SENSORS 2016; 17:s17010007. [PMID: 28025512 PMCID: PMC5298580 DOI: 10.3390/s17010007] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/18/2016] [Revised: 11/29/2016] [Accepted: 12/20/2016] [Indexed: 11/16/2022]
Abstract
The necessity of environmental protection has stimulated the development of many kinds of methods allowing the determination of different pollutants in the natural environment, including methods for determining nitrate in source water. In this paper, the characteristics of an etched fiber Bragg grating (e-FBG) sensing probe—which integrated in fiber laser structure—are studied by numerical simulation and experiment. The proposed sensor is demonstrated for determination of the low nitrate concentration in a water environment. Experimental results show that this sensor could determine nitrate in water samples at a low concentration range of 0–80 ppm with good repeatability, rapid response, and average sensitivity of 3.5 × 10−3 nm/ppm with the detection limit of 3 ppm. The e-FBG sensing probe integrated in fiber laser demonstrates many advantages, such as a high resolution for wavelength shift identification, high optical signal-to-noise ratio (OSNR of 40 dB), narrow bandwidth of 0.02 nm that enhanced accuracy and precision of wavelength peak measurement, and capability for optical remote sensing. The obtained results suggested that the proposed e-FBG sensor has a large potential for the determination of low nitrate concentrations in water in outdoor field work.
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Affiliation(s)
- Thanh Binh Pham
- Institute of Materials Science, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Rd, Cau giay District, Hanoi 100000, Vietnam.
| | - Huy Bui
- Institute of Materials Science, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Rd, Cau giay District, Hanoi 100000, Vietnam.
| | - Huu Thang Le
- Small and Medium Enterprise Development and Support Center 1, Directorate for Standards, Metrology and Quality, 8 Hoang Quoc Viet Rd, Cau giay District, Hanoi 100000, Vietnam.
| | - Van Hoi Pham
- Institute of Materials Science, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Rd, Cau giay District, Hanoi 100000, Vietnam.
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14
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Li Y, Yang N, Du T, Wang X, Chen W. Transformation of graphene oxide by chlorination and chloramination: Implications for environmental transport and fate. WATER RESEARCH 2016; 103:416-423. [PMID: 27494697 DOI: 10.1016/j.watres.2016.07.051] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2016] [Revised: 07/19/2016] [Accepted: 07/21/2016] [Indexed: 06/06/2023]
Abstract
The rapidly increasing and widespread use of graphene oxide (GO) calls for immediate attention on the environmental fate of this material. To date, very little is known about the environmental transformation of GO. This study explored the changes of physicochemical properties of GO from chlorination and chloramination, which simulated the reactions occurring in water and wastewater treatment systems. Significant changes of GO surface O-functionalities occurred and scrolling of graphene sheets (those of very large sizes) were observed upon the treatments. Chloroform, a byproduct from chlorination was also detected, indicating the ring-opening on the edge of GO nanosheets. The changes of GO surface O-functionalities were attributable to the oxidation of quinone groups of GO by chlorine or chloramine. The scrolling of large-sized GO sheets may be attributable to the destruction of benzene rings at the edge of the GO. The results of membrane filtration experiments and column transport experiments indicated that chlorination and chloramination enhanced the mobility and transport of GO, likely by increasing the colloidal stability and inhibiting the agglomeration of GO nanosheets. The findings of this study further underline the significant implications of GO transformation on the fate and transport of this new nanomaterial.
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Affiliation(s)
- Yao Li
- College of Environmental Science and Engineering, Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria, Tianjin Key Laboratory of Environmental Remediation and Pollution Control, Nankai University, Wei Jin Road 94, Tianjin 300071, China.
| | - Nan Yang
- College of Environmental Science and Engineering, Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria, Tianjin Key Laboratory of Environmental Remediation and Pollution Control, Nankai University, Wei Jin Road 94, Tianjin 300071, China
| | - Tingting Du
- College of Environmental Science and Engineering, Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria, Tianjin Key Laboratory of Environmental Remediation and Pollution Control, Nankai University, Wei Jin Road 94, Tianjin 300071, China
| | - Xinzhe Wang
- College of Environmental Science and Engineering, Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria, Tianjin Key Laboratory of Environmental Remediation and Pollution Control, Nankai University, Wei Jin Road 94, Tianjin 300071, China
| | - Wei Chen
- College of Environmental Science and Engineering, Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria, Tianjin Key Laboratory of Environmental Remediation and Pollution Control, Nankai University, Wei Jin Road 94, Tianjin 300071, China
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Khan MR, Wabaidur SM, Alothman ZA, Busquets R, Naushad M. Method for the fast determination of bromate, nitrate and nitrite by ultra performance liquid chromatography–mass spectrometry and their monitoring in Saudi Arabian drinking water with chemometric data treatment. Talanta 2016; 152:513-20. [DOI: 10.1016/j.talanta.2016.02.036] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2015] [Revised: 02/06/2016] [Accepted: 02/16/2016] [Indexed: 10/22/2022]
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