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Kamel AH, Abd-Rabboh HSM. Electrochemical sensors based on molecularly imprinted polymers for the detection of chlorophenols as emergent distributing chemicals (EDCs): a review. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2024; 16:4024-4040. [PMID: 38860820 DOI: 10.1039/d4ay00386a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2024]
Abstract
Environmental pollutants like chlorophenol chemicals and their derivatives are commonplace. These compounds serve as building blocks in the production of medicines, biocides, dyes, and agricultural chemicals. Chlorophenols enter the environment through several different pathways, including the breakdown of complex chlorinated hydrocarbons, industrial waste, herbicides, and insecticides. Chlorophenols are destroyed thermally and chemically, creating dangerous chemicals that pose a threat to public health. Water in particular is affected, and thorough monitoring is required to find this source of pollution because it can pose a major hazard to both human and environmental health. For the detection of chlorophenols, molecularly imprinted polymers (MIPs) have been incorporated into a variety of electrochemical sensing systems and assay formats. Due to their long-term chemical and physical stability as well as their simple and affordable synthesis process, MIPs have become intriguing synthetic alternatives over the past few decades. In this review, we concentrate on the commercial potential of the MIP technology. Additionally, we want to outline the most recent advancements in their incorporation into electrochemical sensors with a high commercial potential for detecting chlorophenols.
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Affiliation(s)
- Ayman H Kamel
- Department, College of Science, University of Bahrain, Sokheer 32038, Kingdom of Bahrain.
- Department of Chemistry, Faculty of Science, Ain Shams University, Cairo 11566, Egypt.
| | - Hisham S M Abd-Rabboh
- Chemistry Department, College of Science, King Khalid University, PO Box 9004, Abha, 62223, Saudi Arabia
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2
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Martin PR, Buchner D, Jochmann MA, Haderlein SB. Dispersive liquid-liquid microextraction as a novel enrichment approach for compound-specific carbon isotope analysis of chlorinated phenols. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2024; 16:919-929. [PMID: 38258526 DOI: 10.1039/d3ay01981k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2024]
Abstract
Compound-specific isotope analysis (CSIA) via gas chromatography-isotope ratio mass spectrometry (GC-IRMS) is a potent tool to elucidate the fate of (semi-)volatile organic contaminants in technical and environmental systems. Yet, due to the comparatively low sensitivity of IRMS, an enrichment step prior to analysis often is inevitable. A promising approach for fast as well as economic analyte extraction and preconcentration prior to CSIA is dispersive liquid-liquid microextraction (DLLME) - a well-established technique in concentration analysis of contaminants from aqueous samples. Here, we present and evaluate the first DLLME method for GC-IRMS exemplified by the analysis of chlorinated phenols (4-chlorophenol, 2,4-dichlorophenol, and 2,4,6-trichlorophenol) as model compounds. The analytes were simultaneously acetylated with acetic anhydride and extracted from the aqueous phase using a binary solvent mixture of acetone and tetrachloroethylene. With this method, reproducible δ13C values were achieved with errors ≤ 0.6‰ (n = 3) for aqueous concentrations down to 100 μg L-1. With preconcentration factors between 130 and 220, the method outperformed conventional liquid-liquid extraction in terms of sample preparation time and resource consumption with comparable reproducibility. Furthermore, we have demonstrated the suitability of the method (i) for the extraction of the analytes from a spiked river water sample and (ii) to quantify kinetic carbon isotope effect for 2,4,6-trichlorophenol during reduction with zero-valent zinc in a laboratory batch experiment. The presented work shows for the first time the potential of DLLME for analyte enrichment prior to CSIA and paves the way for further developments, such as the extraction of other compounds or scaling up to larger sample volumes.
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Affiliation(s)
- Philipp R Martin
- Department of Geosciences, Eberhard Karls University Tübingen, Schnarrenbergstr. 94-96, D-72076 Tübingen, Germany.
| | - Daniel Buchner
- Department of Geosciences, Eberhard Karls University Tübingen, Schnarrenbergstr. 94-96, D-72076 Tübingen, Germany.
| | - Maik A Jochmann
- Instrumental Analytical Chemistry, University of Duisburg-Essen, D-45141 Essen, Germany
| | - Stefan B Haderlein
- Department of Geosciences, Eberhard Karls University Tübingen, Schnarrenbergstr. 94-96, D-72076 Tübingen, Germany.
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3
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Yin P, Wang Q, Li S, Hao L, Wang C, Wang Z, Wu Q. One-step preparation of carboxyl-functionalized porous organic polymer as sorbent for enrichment of phenols in bottled water, juice and honey samples. J Chromatogr A 2024; 1714:464568. [PMID: 38086188 DOI: 10.1016/j.chroma.2023.464568] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Revised: 12/04/2023] [Accepted: 12/07/2023] [Indexed: 01/05/2024]
Abstract
Herein, a novel carboxyl-functionalized porous organic polymer (COOH-POP) was prepared as sorbent. Due to multiple hydrogen bonds and π-π interactions between COOH-POP and phenols, COOH-POP shows good enrichment ability and very fast adsorption rate for phenols. Then, an analytical method was developed for determination of five phenols (2-chlorophenol, bisphenol A, 2,6-dichlorophenol, 2,4-dichlorophenol and p-tert-butylphenol) in bottled water, lemon juice, peach juice and honey samples using COOH-POP as solid phase extraction sorbent in combination with high performance liquid chromatography. Under optimal conditions, the COOH-POP based method gave the detection limits (S/N = 3) of 0.02-0.10 ng mL-1 for bottled water, 0.03-0.12 ng mL-1 for lemon juice, 0.03-0.25 ng mL-1 for peach juice and 0.7-1.5 ng g-1 for honey samples. The recoveries for spiked samples ranged from 84.0 % to 119.0 % with relative standard deviation less than 7.6 %. This study provides a new yet effective method for enrichment of phenols by designing carboxyl-functionalized porous organic polymer as sorbent.
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Affiliation(s)
- Peiying Yin
- College of Science, Hebei Agricultural University, Baoding 071001, China
| | - Qianqian Wang
- College of Science, Hebei Agricultural University, Baoding 071001, China
| | - Shuofeng Li
- College of Science, Hebei Agricultural University, Baoding 071001, China; College of Food Science and Technology, Hebei Agricultural University, Baoding 071001, China
| | - Lin Hao
- College of Science, Hebei Agricultural University, Baoding 071001, China.
| | - Chun Wang
- College of Science, Hebei Agricultural University, Baoding 071001, China
| | - Zhi Wang
- College of Science, Hebei Agricultural University, Baoding 071001, China; College of Food Science and Technology, Hebei Agricultural University, Baoding 071001, China
| | - Qiuhua Wu
- College of Science, Hebei Agricultural University, Baoding 071001, China; College of Food Science and Technology, Hebei Agricultural University, Baoding 071001, China.
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Mhlongo NL, Akharame MO, Pereao O, Human IS, Opeolu BO. Phenolic compounds occurrence and human health risk assessment in potable and treated waters in Western Cape, South Africa. FRONTIERS IN TOXICOLOGY 2024; 5:1269601. [PMID: 38239933 PMCID: PMC10794607 DOI: 10.3389/ftox.2023.1269601] [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: 07/30/2023] [Accepted: 11/28/2023] [Indexed: 01/22/2024] Open
Abstract
Phenolic pollutants from industrial and agricultural activities pose a major threat to the world's potable water supply. The persistent micro-pollutants often find their way into drinking water sources with possible adverse human health implications. In this study, bottled water, tap water, and wastewater treatment plant (WWTP) effluent samples from the Boland region of the Western Cape, South Africa were assessed to determine 4-chlorophenol (4-CP) and 2,4-dichlorophenol (2,4-DCP) levels using HPLC/DAD instrumentation. The selected area is known for its vast agricultural ventures and wineries. Evaluation of the human health risk (cancer risk) for the pollutants was conducted using the hazard quotient (HQ). The Ames mutagenicity test was also conducted using the Salmonella typhimurium T98 and T100 strains and the S9 activation enzyme. Trace levels of the phenolics were detected in the samples with a range of 9.32 × 10-7-1.15 × 10-4 mg/L obtained for 4-CP, and 8.80 × 10-7-1.72 × 10-4 mg/L recorded for 2,4-DCP. Both compounds had levels below the limit of 0.01 mg/L prescribed by South African legislation. The assessed HQ for the phenolic concentrations indicates a low level of potential ecological risk and none of the samples had a cancer risk value that exceeded the regulatory limit. The possibility of the analyzed samples causing cancer is unlikely, but non-carcinogenic adverse effects were found. Strong mutagenicity was observed for the T98 strains with a potential ability to cause mutation toward the insertion or deletion of a nucleotide. The T100 bacterial strain showed very slight mutagenicity potential, however, it is unlikely to cause any mutation. The levels of phenolics in the potable water samples may pose a significant threat to human health. Hence, screening persistent organic chemicals in potable water sources and evaluating their potential human health effects is pertinent to prevent associated health challenges.
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Affiliation(s)
- Nkosiyenzile Londiwe Mhlongo
- Department of Environmental and Occupational Studies, Cape Peninsula University of Technology, Cape Town, South Africa
| | - Michael Ovbare Akharame
- Department of Environmental Management and Toxicology, University of Benin, Benin-City, Nigeria
| | - Omoniyi Pereao
- Department of Environmental and Occupational Studies, Cape Peninsula University of Technology, Cape Town, South Africa
| | - Izanne Susan Human
- Department of Environmental and Occupational Studies, Cape Peninsula University of Technology, Cape Town, South Africa
| | - Beatrice Olutoyin Opeolu
- Environmental Chemistry and Toxicology Research Group, Cape Peninsula University of Technology, Cape Town, South Africa
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Li M, Yu J, Wang X, Hao L, Ma L, Wang Q, Liu W, Wang Z, Wang C, Wu Q. N-rich hypercrosslinked porous polymers for highly efficient preconcentration and sensitive detection of chlorophenols. Mikrochim Acta 2023; 190:334. [PMID: 37507625 DOI: 10.1007/s00604-023-05918-5] [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: 04/10/2023] [Accepted: 07/14/2023] [Indexed: 07/30/2023]
Abstract
Three novel N-rich hypercrosslinked porous polymers (NHCP1, NHCP2, and NHCP3) were facilely developed using Friedel-Crafts alkylation. NHCP1 with a remarkably large surface area (2066 m2 g-1) showed the best adsorption performance for chlorophenol pollutants. A sensitive and simple method was developed by using NHCP1 as a sorbent for solid-phase extraction to preconcentrate several chlorophenols in honey, water, and peach beverage samples followed by determination using a high-performance liquid chromatography-ultraviolet detector. The detection wavelength was 280 nm. Under the optimized conditions, the linear ranges were 1.67-1000 ng g-1 for honey, 0.170-100 ng mL-1 for water, and 0.330-100 ng mL-1 for peach beverage samples. The detection limits (S/N = 3) were 0.500-2.00 ng g-1, 0.0500-0.100 ng mL-1, and 0.100-0.200 ng mL-1, respectively. Recovery values were 89.3-111% with relative standard deviations <9.4%. The proposed extraction/preconcentration and quantitative analysis method provides an affordable and effective alternative for the preconcentration and determination of low levels of chlorophenols in real samples.
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Affiliation(s)
- Min Li
- College of Science, Hebei Agricultural University, Baoding, 071001, China
| | - Jingtao Yu
- College of Economics and Management, Hebei Agricultural University, Baoding, 071001, China
| | - Xinmeng Wang
- College of Science, Hebei Agricultural University, Baoding, 071001, China
| | - Lin Hao
- College of Science, Hebei Agricultural University, Baoding, 071001, China
| | - Lequn Ma
- College of Science, Hebei Agricultural University, Baoding, 071001, China
| | - Qianqian Wang
- College of Science, Hebei Agricultural University, Baoding, 071001, China
- College of Food Science and Technology, Hebei Agricultural University, Baoding, 071001, China
| | - Weihua Liu
- College of Science, Hebei Agricultural University, Baoding, 071001, China
| | - Zhi Wang
- College of Science, Hebei Agricultural University, Baoding, 071001, China
- College of Food Science and Technology, Hebei Agricultural University, Baoding, 071001, China
| | - Chun Wang
- College of Science, Hebei Agricultural University, Baoding, 071001, China.
| | - Qiuhua Wu
- College of Science, Hebei Agricultural University, Baoding, 071001, China.
- College of Food Science and Technology, Hebei Agricultural University, Baoding, 071001, China.
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Gebreyohannes BE, Dube S, Nindi MM. Simultaneous Determination of Multiple Contaminants in Chicken Liver Using Dispersive Liquid-Liquid Microextraction (DLLME) Detected by LC-HRMS/MS. Foods 2023; 12:2594. [PMID: 37444332 DOI: 10.3390/foods12132594] [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: 05/19/2023] [Revised: 06/15/2023] [Accepted: 06/27/2023] [Indexed: 07/15/2023] Open
Abstract
Simultaneous determination of a mixture of food contaminants, including pesticides, sulphonamides, fluoroquinolones, anthelmintics, and aflatoxin B1, in solid biological samples (chicken liver) by dispersive liquid-liquid microextraction/liquid chromatography-high resolution mass spectrometry (DLLME/LC-HRMS) is presented. Previous work focused on the application of DLLME to single-class contaminants. In this work, the DLLME extraction method has been extended to complex multiresidues in the biological matrix. The first part of this study was the selection of an appropriate solvent that enabled the dissolution of analytes from the chicken livers. The matrix-matched calibration curves showed good linearity in the range 0.5-50.0 µg kg-1 for aflatoxin B1 and 50-500 µg kg-1 for pesticides, fluoroquinolones, sulphonamides, and anthelmintics, with a coefficient of determination (R2) values of 0.9916-0.9967. The mean recoveries were in the range of 80.4-96.3%, and the relative standard deviation (RSD) values were in the range of 1.53-8.98%. The limit of detection (LOD) and the limit of quantification (LOQ) values were 0.03 µg kg-1 and 0.09 µg kg-1, respectively, for aflatoxin B1, and for pesticides, fluoroquinolones, sulphonamides, and anthelmintics, they were in the range of 0.011-1.197 µg kg-1 and 0.150-2.579 µg kg-1, respectively. The developed method was compared with the standard solid phase extraction (SPE) method, and there was no significant difference between the two methods.
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Affiliation(s)
- Belete Eshetu Gebreyohannes
- Department of Chemistry, The Science Campus, College of Science Engineering and Technology, University of South Africa, Corner of Christiaan de Wet Road & Pioneer Avenue, Florida 1709, South Africa
| | - Simiso Dube
- Department of Chemistry, The Science Campus, College of Science Engineering and Technology, University of South Africa, Corner of Christiaan de Wet Road & Pioneer Avenue, Florida 1709, South Africa
| | - Mathew Muzi Nindi
- Institute for Nanotechnology and Water Sustainability, The Science Campus, College of Science Engineering and Technology, University of South Africa, Corner of Christiaan de Wet Road & Pioneer Avenue, Florida 1709, South Africa
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Ghani M, Khodkavandi S, Jafari Z, Ghamari kargar P, Maleki B, Fathnia Tabari H. Synthesis of cellulose nanofibers-based ImSalophen@Fe3O4 as a green sorbent for magnetic solid-phase extraction of chlorophenols followed by quantification via high-performance liquid chromatography-ultraviolet detection. Microchem J 2023. [DOI: 10.1016/j.microc.2022.108368] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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Cerdà V, Ferreira SLC, Phansi P. Lab-in-Syringe, a Useful Technique for the Analysis and Detection of Pollutants of Emerging Concern in Environmental and Food Samples. Molecules 2022; 27:7279. [PMID: 36364111 PMCID: PMC9656442 DOI: 10.3390/molecules27217279] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2022] [Revised: 10/15/2022] [Accepted: 10/17/2022] [Indexed: 12/04/2023] Open
Abstract
Lab-in-syringe is a new approach for the integration of various analytical extraction steps inside a syringe. Fully automated dispersive liquid-liquid microextraction is carried out in-syringe using a very simple instrumental setup. Dispersion is achieved by aspiration of the organic phase and then the watery phase into the syringe as rapidly as possible. After aggregation of the solvent droplets, the organic phase is pushed towards the detector allowing a highly sensitive spectrophotometric or fluorimetric detection. This technique is very useful not only for the preconcentration of analyte, but also for the elimination of their interferences. In this work, its application is described using solvents that are lighter and denser than water. The magnetically assisted variant and its coupling to different instruments has been also described with the aim of increasing the resolution of complex samples, especially useful for the determination of emerging contaminants.
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Affiliation(s)
| | - Sergio L. C. Ferreira
- Instituto de Química, Universidade Federal da Bahia, Bahia, Salvador 40170-270, Brazil
| | - Piyawan Phansi
- Department of Chemistry, Thepsatri Rajabhat University, Lopburi 15000, Thailand
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Dispersive liquid–liquid microextraction-assisted by deep eutectic solvent for the extraction of different chlorophenols from water samples followed by analysis using gas chromatography-electron capture detection. Microchem J 2022. [DOI: 10.1016/j.microc.2022.107608] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
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Rao Pasupuleti R, Wang ZF, Ya WJ, Kuo CA, Chao YY, Huang YL. Extraction and Detection of Chlorophenols in Water Samples Using Deep Eutectic Solvent-based Dispersive Liquid-Liquid Microextraction Coupled with HPLC-UV. Microchem J 2022. [DOI: 10.1016/j.microc.2022.107843] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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Determination of 19 chlorophenols in fish by QuEChERS-gas chromatography-mass spectrometry. Se Pu 2022; 40:477-487. [PMID: 35478007 PMCID: PMC9404033 DOI: 10.3724/sp.j.1123.2021.12002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
大量含氯农药、次氯酸消毒水以及水产品杀虫剂和杀菌剂的广泛使用,使鱼类容易受到氯酚类化合物的污染,因而建立鱼肉中氯酚类化合物的检测方法十分重要。建立了QuEChERS结合气相色谱-质谱法同时检测鱼肉中19种氯酚类化合物的分析方法。19种氯酚类化合物选用DB-5MS毛细管色谱柱(30 m×0.25 mm×0.25 μm),载气流速1 mL/min进行分离,可以得到很好的峰形。前处理采用改良的QuEChERS方法,通过对提取剂的种类和剂量、净化剂的种类和剂量,以及衍生条件中的衍生温度、衍生时间和衍生剂用量等进行优化,确定最优的前处理方法。选择10 mL乙酸乙酯作为提取剂,500 mg的C18作为净化剂,加入3 g氯化钠和5 g无水硫酸镁,过0.22 μm的有机滤膜,加入50 μL的硅烷化衍生剂在45 ℃条件下衍生30 min,用EI源测定,选择离子监测模式,以外标法定量。19种氯酚类化合物在0.4~10 μg/L范围内具有良好的线性关系,相关系数R2大于0.998,方法定量限为0.04~0.16 μg/kg。空白基质不同加标水平的回收率为70.6%~115.0%,相对标准偏差为2.6%~10.5%。将建立的方法应用于实际样品的检测分析,结果显示,各种鱼肉中均有不同程度的氯酚类化合物检出,其中,黄花鱼检出的氯酚类化合物总量最大,为8.74 μg/kg;其次为鲫鱼7.59 μg/kg;米鱼的检出量最少,为1.59 μg/kg。所建立的方法简化了样品的前处理步骤,操作简单,方法灵敏度高、重复性好,可满足鱼肉中19种氯酚类化合物的高通量检测要求,能显著提高氯酚类化合物的检测效率。
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Sajid M. Dispersive liquid-liquid microextraction: Evolution in design, application areas, and green aspects. Trends Analyt Chem 2022. [DOI: 10.1016/j.trac.2022.116636] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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Himmi MFBM, Yih BS, Yusoff F, Saleh NM. Extraction of Phenol from Water using Dispersive Liquid-liquid Microextraction Coupled with UV-VIS Spectroscopy. JOURNAL OF ANALYTICAL CHEMISTRY 2022. [DOI: 10.1134/s1061934822010051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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14
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Gao X, Si X, Yuan Y, Chen K, Qin K. Ultra-trace Extraction of Two Bactericides Via Ultrasound-Assisted Dispersive Liquid-Liquid Microextraction. J Chromatogr Sci 2021; 59:182-190. [PMID: 33173942 DOI: 10.1093/chromsci/bmaa083] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2019] [Indexed: 11/12/2022]
Abstract
BACKGROUND A simple, rapid and sensitive method coupling ultrasound-assisted dispersive liquid-liquid microextraction (DLLME) with ultra-high performance liquid chromatography-tandem mass spectrometry was developed for the simultaneous determination of malachite green (MG) and crystal violet (CV) in different water samples. OBJECTIVE In ultrasound-assisted DLLME procedure, several parameters affecting the extraction efficiency, including pH, type and volume of the extraction and dispersive solvents, extraction time, ionic strength, were optimized to improve the accuracy and precision of this method. METHODS MG and CV were extracted and preconcentrated using dichloromethane and acetonitrile as the extraction and dispersive solvents, respectively. RESULTS Under the optimum conditions, the proposed method affords good linearity in the range of 0.40-20.0 ng/L, and the limit of detections were 0.21 and 0.32 ng/L for MG and CV, respectively. The recoveries of the method at three spiked levels were in the range of 83.4-94.2% with relative standard deviations lower than 4.7% (n = 3). CONCLUSIONS Satisfactorily, no significant matrix effect has been found as the data ranged between 68% and 102%.
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Affiliation(s)
- Xun Gao
- School of Pharmacy, Jiangsu Key Laboratory of Marine Pharmaceutical Compound Screening, Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Jiangsu Ocean University, 59 Cangwu Road, Lianyungang 222001, P.R. China
| | - Xinxin Si
- School of Pharmacy, Jiangsu Key Laboratory of Marine Pharmaceutical Compound Screening, Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Jiangsu Ocean University, 59 Cangwu Road, Lianyungang 222001, P.R. China
| | - Yunxia Yuan
- School of Pharmacy, Shenyang Pharmaceutical University, 103 Wenhua Rd, Shenhe District, Shenyang 110016, P.R. China
| | - Kexin Chen
- School of Pharmacy, Jiangsu Key Laboratory of Marine Pharmaceutical Compound Screening, Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Jiangsu Ocean University, 59 Cangwu Road, Lianyungang 222001, P.R. China
| | - Kunming Qin
- School of Pharmacy, Jiangsu Key Laboratory of Marine Pharmaceutical Compound Screening, Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Jiangsu Ocean University, 59 Cangwu Road, Lianyungang 222001, P.R. China
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Zhang XY, Lu Y, Du Y, Wang WL, Yang LL, Wu QY. Comprehensive GC×GC-qMS with a mass-to-charge ratio difference extraction method to identify new brominated byproducts during ozonation and their toxicity assessment. JOURNAL OF HAZARDOUS MATERIALS 2021; 403:124103. [PMID: 33265069 DOI: 10.1016/j.jhazmat.2020.124103] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Revised: 09/21/2020] [Accepted: 09/24/2020] [Indexed: 06/12/2023]
Abstract
Ozonation might increase the risk of wastewater due to byproduct formation, especially in the presence of bromide. In this study, a new analytical method was developed to identify new brominated disinfection byproducts (Br-DBPs) during ozonation, using comprehensive two-dimensional gas chromatography-single quadrupole mass spectrometry (GC×GC-qMS) connected with an electron capture detector in parallel. The obtained data were analyzed using a mass-to-charge ratio (m/z) difference extraction method. Over 1304 DBPs were detected in an ozonated phenylalanine solution. Further screening of 635 DBPs was conducted using the m/z difference extraction method. Finally, the structures for 12 Br-DBPs were confirmed and for 4 Br-DBPs were tentatively proposed by comparison with the NIST library and standard compounds. Eight of the confirmed Br-DBPs are first reported and identified: 2-bromostyrene, 1-bromo-1-phenylethylene, 2-bromobenzaldehyde, 3-bromobenzaldehyde, 4-bromobenzaldehyde, 2-bromophenylacetonitrile, 3-bromophenylacetonitrile and 4-bromophenylacetonitrile. These DBPs and 2,4,6-tribromophenol were detected at nanogram- to microgram-per-liter concentrations during ozonation of authentic water samples like algal bloom waters, wastewater treatment plant effluents, and surface water. The toxicities of these compounds were generally higher than that of bromate. The developed analytical method is a powerful technique for analyzing complex compounds and provides a novel way of identifying byproducts in future studies.
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Affiliation(s)
- Xin-Yang Zhang
- Key Laboratory of Microorganism Application and Risk Control of Shenzhen, Guangdong Provincial Engineering Research Center for Urban Water Recycling and Environmental Safety, International Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, PR China
| | - Yao Lu
- Shenzhen Environmental Science and New Energy Technology Engineering Laboratory, Tsinghua-Berkeley Shenzhen Institute, Shenzhen 518055, PR China
| | - Ye Du
- Shenzhen Environmental Science and New Energy Technology Engineering Laboratory, Tsinghua-Berkeley Shenzhen Institute, Shenzhen 518055, PR China
| | - Wen-Long Wang
- Environmental Simulation and Pollution Control State Key Joint Laboratory, State Environmental Protection Key Laboratory of Microorganism Application and Risk Control (SMARC), School of Environment, Tsinghua University, Beijing 100084, PR China
| | - Lu-Lin Yang
- Key Laboratory of Microorganism Application and Risk Control of Shenzhen, Guangdong Provincial Engineering Research Center for Urban Water Recycling and Environmental Safety, International Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, PR China
| | - Qian-Yuan Wu
- Key Laboratory of Microorganism Application and Risk Control of Shenzhen, Guangdong Provincial Engineering Research Center for Urban Water Recycling and Environmental Safety, International Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, PR China.
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16
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Monitoring of phenols in natural waters and bottom sediments: preconcentration on a magnetic sorbent, GC–MS analysis, and weather observations. CHEMICAL PAPERS 2020. [DOI: 10.1007/s11696-020-01398-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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17
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Zhang L, Wei Z, Liu P. An all-solid-state NO3- ion-selective electrode with gold nanoparticles solid contact layer and molecularly imprinted polymer membrane. PLoS One 2020; 15:e0240173. [PMID: 33057369 PMCID: PMC7561137 DOI: 10.1371/journal.pone.0240173] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Accepted: 09/21/2020] [Indexed: 11/26/2022] Open
Abstract
To improve the single-layer all-solid-state ion selective electrode' defects including poor conductivity of PVC sensitive membrane and interference of water layer between substrate electrode and sensitive membrane, a double-layer all-solid-state ion selective electrode with nanomaterial as the solid contact layer and conductive polymer as the ion sensitive membrane was developed. A gold nanoparticles solid contact layer and a nitrate-doped polypyrrole molecularly imprinted polymer membrane were prepared by electrodeposition. The optimal parameters obtained by electrochemical performance test were 2.5 mmol/L HAuCl4 electrolyte for solid contact layer and 1800s electrodeposition time for sensitive membrane. The new electrode exhibited a Nernstian response of -50.4 mV/decade and a low detection limit of 5.25×10-5mol/L. Potentiometric water layer test showed no water film formed between the gold nanoparticles solid contact layer and nitrate-doped polypyrrole molecularly imprinted polymer membrane. The contact angle between droplet and the surface of solid contact layer was 112.35° and showed good hydrophobic property. Furthermore, the developed electrode exhibited fast response, excellent potential stability and long lifetime. This electrode is suitable for the detection of nitrate concentration in water and liquid fertilizer.
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Affiliation(s)
- Lei Zhang
- State Key Lab for Manufacturing System Engineering, Xi’an Jiaotong University, Xi’an, China
| | - Zhengying Wei
- State Key Lab for Manufacturing System Engineering, Xi’an Jiaotong University, Xi’an, China
| | - Pengcheng Liu
- State Key Lab for Manufacturing System Engineering, Xi’an Jiaotong University, Xi’an, China
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18
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Ghaemi F, Amiri A. Microcrystalline cellulose/metal−organic framework hybrid as a sorbent for dispersive micro-solid phase extraction of chlorophenols in water samples. J Chromatogr A 2020; 1626:461386. [DOI: 10.1016/j.chroma.2020.461386] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Revised: 06/27/2020] [Accepted: 06/30/2020] [Indexed: 10/23/2022]
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19
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Mehraban M, Manoochehri M. Determination of chlorophenols in water by liquid chromatography method after magnetic solid phase extraction based on SiO
2
/MIL‐101@Fe
3
O
4
nanoadsorbent. SEPARATION SCIENCE PLUS 2020. [DOI: 10.1002/sscp.201900076] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Masoomeh Mehraban
- Department of ChemistryCentral Tehran BranchIslamic Azad University Tehran 1467686831 Iran
| | - Mahboobeh Manoochehri
- Department of ChemistryCentral Tehran BranchIslamic Azad University Tehran 1467686831 Iran
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20
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Construction of a recyclable oxidase-mimicking Fe 3O 4@MnO x-based colorimetric sensor array for quantifying and identifying chlorophenols. Anal Chim Acta 2020; 1107:203-212. [PMID: 32200895 DOI: 10.1016/j.aca.2020.02.024] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Revised: 01/30/2020] [Accepted: 02/10/2020] [Indexed: 11/20/2022]
Abstract
Chlorophenols (CPs) are known as a class of pollutants posing a great threat to the environment and human health because of their carcinogenesis and teratogenesis, and thus exploring convenient and efficient methods for their detection and identification becomes particularly important. Herein, we report a recyclable colorimetric sensor array according to the oxidase-mimicking catalytic characteristics of Fe3O4@MnOx for the high-performance quantification and differentiation of typical CPs. The core-shell Fe3O4@MnOx prepared by growing oxidase-like MnOx nanoflakes on the surface of magnetic Fe3O4 particles via a hydrothermal process can exhibit excellent catalytic activity to trigger the color reaction of CPs and 4-aminoantipyrine with the participation of O2. By utilizing the Fe3O4@MnOx-catalyzed color reaction, high-sensitivity quantitative analysis of CPs, taking 2-chlorophenol as a model, was realized, providing a detection limit as low as 0.85 μM. Given different chlorine substitution places and numbers in CPs impact the reaction kinetics diversely, a new nanozyme-based colorimetric sensor array was further constructed for the successful differentiation of various CPs with the help of hierarchical cluster analysis and principal component analysis. Accurate double-blind identification of unknown samples using the proposed sensor array was also demonstrated, indicating its reliability for practical practice.
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21
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Tamiji Z, Salahinejad M, Niazi A. Optimized Vortex-Assisted Dispersive Liquid–Liquid Microextraction Coupled with Spectrofluorimetry for Determination of Aspirin in Human Urine: Response Surface Methodology. CURR PHARM ANAL 2020. [DOI: 10.2174/1573412914666181031115209] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Background:
A Vortex-assisted dispersive liquid-liquid microextraction (VA-DLLME)
method is presented for the determination of aspirin (acetylsalicylic acid) in human urine by spectrofluorimetry.
Objective:
To determine trace levels of aspirin in biologic samples by using green and low-cost method
development.
Methods:
For the microextraction procedure, chloroform and acetonitrile were used as extraction and
disperser solvent, respectively. The factors affecting the efficiency of extraction such as volume of chloroform,
volumes of acetonitrile, ionic strength, sample pH, centrifuging time, and extraction time were
investigated. Then significant variables were optimized by the response surface method using the Box-
Behnken design.
Results:
Under the optimum extraction conditions, a linear calibration curve in the range of 0.1 to 130
ng mL-1 with a correlation coefficient of R2 = 0.998 was obtained. The limits of detection (LOD) and
limits of quantification (LOQ) were 0.031 and 0.103 ng mL-1, respectively. The relative standard deviations
(RSD) were less than 4%.
Conclusion:
Enrichment factor and recoveries were achieved for the extraction of aspirin in human
urine. This method gives a rapid, simple, sensitive and environmentally friendly for the measurement of
trace amount aspirin.
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Affiliation(s)
- Zahra Tamiji
- Department of Chemistry, Faculty of Science, Arak Branch, Islamic Azad University, Arak, Iran
| | | | - Ali Niazi
- Department of Chemistry, Faculty of Science, Arak Branch, Islamic Azad University, Arak, Iran
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22
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Li Z, Sun H. Cost-Effective Detection of Perfluoroalkyl Carboxylic Acids with Gas Chromatography: Optimization of Derivatization Approaches and Method Validation. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2019; 17:E100. [PMID: 31877809 PMCID: PMC6982026 DOI: 10.3390/ijerph17010100] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Revised: 12/17/2019] [Accepted: 12/19/2019] [Indexed: 11/21/2022]
Abstract
The reliable quantification of perfluoroalkyl carboxylic acids (PFCAs) in environmental samples like surface water by using gas chromatography (GC) remains challenging because the polar PFCAs call for derivatization before injection and problems involving the integration of sample pretreatment and derivatization procedures. Here we proposed a cost-effective method for the GC based determination of C4-C12 PFCAs in surface water samples by integrating solid phase extraction and PFCAs anilide derivatization. First, we assessed the performance of different PFCAs derivatization methods, namely esterification and amidation. Esterification was unable to derivatize C4-C6 PFCAs. On the contrary, amidation procedures by using 2,4-difluoroaniline (DFA) and N,N'-dicyclohexylcarbodiimide (DCC) could successfully transform all the PFCA analogs to produce anilide derivatives, which could be easily detected by GC. Then the reaction conditions in the amidation approach were further optimized by using orthogonal design experiments. After optimizing the instrumental parameters of GC, the limits of detection (LOD) of this derivatization method were determined to be 1.14-6.32 μg L-1. Finally, in order to establish an intact method for the quantification of PFCAs in surface water samples, solid phase extraction (SPE) was used for extraction and cleanup, which was further integrated with the subsequent amidation process. The SPE-amidation-GC method was validated for application, with good accuracy and precision reflected by the PFCAs recoveries and derivatization of triplicates. The method reported here could provide a promising and cost-effective alternative for the simultaneous determination of C4-C12 PFCAs in environmental water samples.
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Affiliation(s)
- Zhen Li
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Institute of Environmental & Applied Chemistry, College of Chemistry, Central China Normal University, Wuhan 430079, China;
- Hubei High-Tech Innovation and Business Incubation Center, Wuhan 430000, China
| | - Hongwei Sun
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Institute of Environmental & Applied Chemistry, College of Chemistry, Central China Normal University, Wuhan 430079, China;
- Division of Environmental Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang 37673, Korea
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23
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Spin-column micro-solid phase extraction of chlorophenols using MFU-4l metal-organic framework. Mikrochim Acta 2019; 187:39. [DOI: 10.1007/s00604-019-4023-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Accepted: 11/09/2019] [Indexed: 12/30/2022]
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24
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Rao TS, Sridevi M, Naidu CG, Nagaraju B. Ionic liquid-based vortex-assisted DLLME followed by RP-LC-PDA method for bioassay of daclatasvir in rat serum: application to pharmacokinetics. J Anal Sci Technol 2019. [DOI: 10.1186/s40543-019-0179-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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25
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Wang Q, Yao L, Hao L, Li Y, Wang C, Wu Q, Wang Z. Ferrocene-based nanoporous organic polymer as solid-phase extraction sorbent for the extraction of chlorophenols from tap water, tea drink and peach juice samples. Food Chem 2019; 297:124962. [DOI: 10.1016/j.foodchem.2019.124962] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2018] [Revised: 04/12/2019] [Accepted: 06/07/2019] [Indexed: 01/04/2023]
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26
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Ahmadi-Jouibari T, Noori N, Sharafi K, Fattahi N. Ultra-preconcentration of common herbicides in aqueous samples using solid phase extraction combined with dispersive liquid–liquid microextraction followed by HPLC–UV. TOXIN REV 2019. [DOI: 10.1080/15569543.2019.1677718] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
Affiliation(s)
- Toraj Ahmadi-Jouibari
- Clinical Research Development Center, Imam Khomeini and Mohammad Kermanshahi and Farabi Hospitals, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Negar Noori
- Clinical Research Development Center, Imam Khomeini and Mohammad Kermanshahi and Farabi Hospitals, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Kiomars Sharafi
- Research Center for Environmental Determinants of Health (RCEDH), Health Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Nazir Fattahi
- Research Center for Environmental Determinants of Health (RCEDH), Health Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
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27
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Huang N, Qin Y, Li M, Chen T, Lu M, Zhao J. A sensitive fluorescence assay of organophosphorus pesticides using acetylcholinesterase and copper-catalyzed click chemistry. Analyst 2019; 144:3436-3441. [PMID: 31020297 DOI: 10.1039/c9an00260j] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Organophosphorus pesticides (OPs) are widely used in agricultural fields, but exhibit high toxicity to human beings. A sensitive fluorescence assay for organophosphorus pesticides was developed using the inhibition of acetylcholinesterase (AChE) activity and the copper-catalyzed click chemical reaction. In the click reaction, two hybridized DNA probes can be ligated with copper ions, inducing a fluorescence quenching during the strand displacement reaction. AChE can hydrolyze acetylthiocholine (ATCh) to form thiocholine (TCh) which contains a thiol group. TCh will react with copper ions, blocking the click reaction and a high fluorescence signal is observed. But in the presence of OPs, the activity of AChE is inhibited, releasing a high concentration of copper ions that catalyze the click chemical reaction and resulting in decreased fluorescence signals. Taking advantage of the copper-mediated signal amplification effect, the sensitivity was improved. This assay has also been applied to detect OPs in river water samples with satisfactory results, which demonstrates that the method has great potential for practical applications in environmental protection and food safety fields.
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Affiliation(s)
- Nian Huang
- Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of Education, Guilin 541004, PR China.
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28
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Iqbal M, Shah J, Jan MR, Zeeshan M. Mixed Hemimicelles Dispersive Solid Phase Extraction using Polyaniline Coated Magnetic Nanoparticles for Chlorophenols from Water Samples. J Inorg Organomet Polym Mater 2019. [DOI: 10.1007/s10904-019-01249-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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29
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Garba ZN, Zhou W, Lawan I, Xiao W, Zhang M, Wang L, Chen L, Yuan Z. An overview of chlorophenols as contaminants and their removal from wastewater by adsorption: A review. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2019; 241:59-75. [PMID: 30981144 DOI: 10.1016/j.jenvman.2019.04.004] [Citation(s) in RCA: 92] [Impact Index Per Article: 18.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2018] [Revised: 04/02/2019] [Accepted: 04/03/2019] [Indexed: 06/09/2023]
Abstract
In this review article, a significant number of published articles (over three decades) were consulted in order to provide comprehensive literature information about chlorophenols, their sources into the environment, classification, and toxicity, various wastewater treatment methods for their removal as well as the characteristics of their adsorption by various adsorbents. Organizing the scattered available information on a wide range of potentially effective adsorbents in the removal of chlorophenols is the principal objective of this article. Various adsorbents such as natural materials, waste materials from industries, agricultural by-products and biomass-based activated carbon in the removal of various chlorophenols have been compiled and discussed here. Crucial factors like temperature, solution pH, contact time and initial solution concentration are also reported and discussed here. The π-π dispersion interaction mechanism, hydrogen bonding formation mechanism, and the electron donor-acceptor complex mechanism were proposed for the chlorophenols adsorption onto various adsorbents with the help of current literature. Conclusions have been drawn proposing a few suggestions for future research on mitigating the effect of chlorophenols in the environment.
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Affiliation(s)
- Zaharaddeen N Garba
- College of Materials Engineering, Fujian Agriculture and Forestry University, Fuzhou, Fujian province, China; Department of Chemistry, Ahmadu Bello University Zaria, Nigeria.
| | - Weiming Zhou
- College of Materials Engineering, Fujian Agriculture and Forestry University, Fuzhou, Fujian province, China
| | - Ibrahim Lawan
- College of Materials Engineering, Fujian Agriculture and Forestry University, Fuzhou, Fujian province, China
| | - Wei Xiao
- College of Materials Engineering, Fujian Agriculture and Forestry University, Fuzhou, Fujian province, China
| | - Mingxi Zhang
- College of Materials Engineering, Fujian Agriculture and Forestry University, Fuzhou, Fujian province, China
| | - Liwei Wang
- Chemistry and Chemical Engineering Department, Minjiang University, Fuzhou, Fujian province, 350108, China
| | - Lihui Chen
- College of Materials Engineering, Fujian Agriculture and Forestry University, Fuzhou, Fujian province, China
| | - Zhanhui Yuan
- College of Materials Engineering, Fujian Agriculture and Forestry University, Fuzhou, Fujian province, China.
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30
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Mauerhofer LM, Pappenreiter P, Paulik C, Seifert AH, Bernacchi S, Rittmann SKMR. Methods for quantification of growth and productivity in anaerobic microbiology and biotechnology. Folia Microbiol (Praha) 2019; 64:321-360. [PMID: 30446943 PMCID: PMC6529396 DOI: 10.1007/s12223-018-0658-4] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2018] [Accepted: 10/12/2018] [Indexed: 12/17/2022]
Abstract
Anaerobic microorganisms (anaerobes) possess a fascinating metabolic versatility. This characteristic makes anaerobes interesting candidates for physiological studies and utilizable as microbial cell factories. To investigate the physiological characteristics of an anaerobic microbial population, yield, productivity, specific growth rate, biomass production, substrate uptake, and product formation are regarded as essential variables. The determination of those variables in distinct cultivation systems may be achieved by using different techniques for sampling, measuring of growth, substrate uptake, and product formation kinetics. In this review, a comprehensive overview of methods is presented, and the applicability is discussed in the frame of anaerobic microbiology and biotechnology.
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Affiliation(s)
- Lisa-Maria Mauerhofer
- Archaea Physiology & Biotechnology Group, Archaea Biology and Ecogenomics Division, Department of Ecogenomics and Systems Biology, Universität Wien, Althanstraße 14, 1090, Wien, Austria
| | - Patricia Pappenreiter
- Institute for Chemical Technology of Organic Materials, Johannes Kepler University Linz, Linz, Austria
| | - Christian Paulik
- Institute for Chemical Technology of Organic Materials, Johannes Kepler University Linz, Linz, Austria
| | | | | | - Simon K-M R Rittmann
- Archaea Physiology & Biotechnology Group, Archaea Biology and Ecogenomics Division, Department of Ecogenomics and Systems Biology, Universität Wien, Althanstraße 14, 1090, Wien, Austria.
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31
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Bustamante SE, Vallejos S, Pascual-Portal BS, Muñoz A, Mendia A, Rivas BL, García FC, García JM. Polymer films containing chemically anchored diazonium salts with long-term stability as colorimetric sensors. JOURNAL OF HAZARDOUS MATERIALS 2019; 365:725-732. [PMID: 30472458 DOI: 10.1016/j.jhazmat.2018.11.066] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2018] [Revised: 11/05/2018] [Accepted: 11/15/2018] [Indexed: 05/03/2023]
Abstract
We have prepared polymeric films as easy-to-handle sensory materials for the colorimetric detection and quantification of phenol derivatives (phenols) in water. Phenols in water resources result from their presence in pesticides and fungicides, among other goods, and are harmful ecotoxins. Colorless polymeric films with pendant diazonium groups attached to the acrylic polymer structure were designed and prepared for use as sensory matrices to detect phenol-derived species in water. Upon dipping the sensory films into aqueous media, the material swells, and if phenols are present, they react with the diazonium groups of the polymer to render a highly colored azo group, giving rise to the recognition phenomenon. The color development can be visually followed for a qualitative determination of phenols. Additionally, quantitative analysis can be performed by two different techniques: a) by using a UV-vis spectrophotometer (limit of detection of 0.12 ppm for 2-phenylphenol) and/or b) by using a smartphone with subsequent RGB analysis (limit of detection of 30 ppb for 2-phenylphenol).
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Affiliation(s)
- Saúl E Bustamante
- Polymer Department, Faculty of Chemistry, University of Concepción, Casilla 160-C, Concepción, Chile
| | - Saúl Vallejos
- Departamento de Química, Facultad de Ciencias, Universidad de Burgos, Plaza de Misael Bañuelos s/n, 09001, Burgos, Spain.
| | - Blanca Sol Pascual-Portal
- Departamento de Química, Facultad de Ciencias, Universidad de Burgos, Plaza de Misael Bañuelos s/n, 09001, Burgos, Spain
| | - Asunción Muñoz
- Departamento de Química, Facultad de Ciencias, Universidad de Burgos, Plaza de Misael Bañuelos s/n, 09001, Burgos, Spain
| | - Aránzazu Mendia
- Departamento de Química, Facultad de Ciencias, Universidad de Burgos, Plaza de Misael Bañuelos s/n, 09001, Burgos, Spain
| | - Bernabé L Rivas
- Polymer Department, Faculty of Chemistry, University of Concepción, Casilla 160-C, Concepción, Chile.
| | - Félix C García
- Departamento de Química, Facultad de Ciencias, Universidad de Burgos, Plaza de Misael Bañuelos s/n, 09001, Burgos, Spain
| | - José M García
- Departamento de Química, Facultad de Ciencias, Universidad de Burgos, Plaza de Misael Bañuelos s/n, 09001, Burgos, Spain.
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32
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Selection of derivatisation agents for chlorophenols determination with multicriteria decision analysis. Microchem J 2019. [DOI: 10.1016/j.microc.2018.11.024] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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33
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Rajput H, Changotra R, Sangal VK, Mahla SK, Dhir A. A facile synthesis of Cs loaded TiO 2 nanotube photoelectrode for the removal of 4-chloroguaiacol. CHEMOSPHERE 2019; 218:687-695. [PMID: 30504044 DOI: 10.1016/j.chemosphere.2018.11.157] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Revised: 09/20/2018] [Accepted: 11/25/2018] [Indexed: 06/09/2023]
Abstract
In this study, novel Cesium (Cs) doped TiO2 nanotubes photoelectrode (Cs/TiO2NTs) were synthesized by simple electrochemical anodization method and characterized by several physicochemical techniques. In particular, the photocatalytic (PC), electrocatalytic (EC) and photoelectrocatalytic (PEC) activity of newly synthesized Cs/TiO2NTs electrodes was investigated using 4-Chloroguaiacol (4-CG). The effect of operating parameters like Cs concentration, electrolyte concentration, external current and pH on degradation efficacy was examined. PEC oxidation using Cs/TiO2NTs lead to 92% degradation of 4-CG in 6 h of solar light irradiation under optimized conditions (2.5 mM Cs, 160 mg L-1 Na2SO4, 0.03 A current and pH 3). A comparative assessment between PEC, PC and EC process manifested that PEC process was most efficient than the other two processes and Cs/TiO2NTs exhibited higher PEC activity than bare-TiO2 electrodes in terms of degradation and mineralization of organic pollutant. The generation of OH radicals was found to be highest in PEC when compared to EC and PC process. Possible intermediates/byproducts were identified by GC-MS technique and a corresponding tentative degradation pathway has been proposed. Cytotoxicity study showed that PEC has potential to detoxify 4-CG. Hence, combination of TiO2 electrodes decorated with Cs metal can act as a highly efficient photoelectrode for the degradation of hazardous pollutants.
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Affiliation(s)
- Himadri Rajput
- School of Energy & Environment, Thapar Institute of Engineering & Technology, Patiala 147004, India
| | - Rahil Changotra
- School of Energy & Environment, Thapar Institute of Engineering & Technology, Patiala 147004, India
| | - Vikas Kumar Sangal
- Department of Chemical Engineering, Malaviya National Institute of Technology, Jaipur 302017, India
| | - Sunil Kumar Mahla
- I.K. Gujral Punjab Technical University Campus, Hoshiarpur 146001, India
| | - Amit Dhir
- School of Energy & Environment, Thapar Institute of Engineering & Technology, Patiala 147004, India.
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34
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Ho WF, Nguyen LT, Yang KL. A microfluidic sensor for detecting chlorophenols using cross-linked enzyme aggregates (CLEAs). LAB ON A CHIP 2019; 19:634-640. [PMID: 30644486 DOI: 10.1039/c8lc01065j] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Chlorophenols have a strong medicinal smell and can be detected by the human nose at parts-per-million levels. Therefore, continuous monitoring of chlorophenols in water supplies is highly important. Herein, we reported a microfluidic sensor which can be used to detect 2,4-dichlorophenol (2,4-DCP) in real time with a limit of detection of around 0.1 ppm. The microfluidic sensor is a membrane-less galvanic cell which consists of two laminar flows running in parallel inside a straight channel. The sensor measures the potential difference between a solution containing 2,4-DCP and a reference solution containing acetate buffer. In a continuous-flow mode, the cell potential is proportional to the concentration of 2,4-DCP. To render specificity for the sensor, we incorporate a pre-treatment section where the incoming solution containing 2,4-DCP is split into two streams. One of the streams is brought into contact with cross-linked laccase aggregates (which catalyzes the hydrolysis of 2,4-DCP) and the second stream is taken as a reference solution. By comparing the potential difference between the two streams, we can determine the concentration of 2,4-DCP with high specificity. The microfluidic sensor platform is potentially useful for real-time detection of micropollutants present in aquatic systems with high sensitivity and specificity.
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Affiliation(s)
- Wing Fat Ho
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, 117585 Singapore.
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35
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Switchable solvent liquid-phase microextraction-gas chromatography-quadrupole isotope dilution mass spectrometry for the determination of 4‑n‑nonylphenol in municipal wastewater. Microchem J 2019. [DOI: 10.1016/j.microc.2018.08.049] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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36
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Ye X, Ma S, Zhang L, Zhao P, Hou X, Zhao L, Liang N. Trace enantioselective determination of triazole fungicides in honey by a sensitive and efficient method. J Food Compost Anal 2018. [DOI: 10.1016/j.jfca.2018.09.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Pokryshkin SA, Kosyakov DS, Kozhevnikov AY, Lakhmanov DE, Ul’yanovskii NV. Highly Sensitive Determination of Chlorophenols in Sea Water by Gas Chromatography−Tandem Mass Spectrometry. JOURNAL OF ANALYTICAL CHEMISTRY 2018. [DOI: 10.1134/s1061934818100088] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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38
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Sun X, Tan J, Ding H, Tan X, Xing J, Xing L, Zhai Y, Li Z. Detection of Polycyclic Aromatic Hydrocarbons in Water Samples by Annular Platform-Supported Ionic Liquid-Based Headspace Liquid-Phase Microextraction. JOURNAL OF ANALYTICAL METHODS IN CHEMISTRY 2018; 2018:3765682. [PMID: 30363692 PMCID: PMC6180925 DOI: 10.1155/2018/3765682] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/01/2018] [Revised: 07/03/2018] [Accepted: 08/27/2018] [Indexed: 06/08/2023]
Abstract
In this paper, a new method of annular platform-supported headspace liquid-phase microextraction (LPME) was designed using ionic liquid as an extraction solvent, wherein extraction stability and efficiency were improved by adding an annular platform inside the extraction bottle. The ionic liquid 1-silicyl-3-benzylimidazolehexafluorophosphate was first synthesized and proved to be an excellent extraction solvent. Coupled with liquid chromatography, the proposed method was employed to analysis of polycyclic aromatic hydrocarbons (PAHs) in water and optimized in aspects of extraction temperature, extraction solvent volume, extraction time, pH, stirring rate, and salt effect of solution. The results indicated that this method showed good linearity (R 2 > 0.995) within 0.5 µg·L-1 to 1000 µg·L-1 for PAHs. The method was more suitable for extraction of volatile PAHs, with recoveries from 65.0% to 102% and quantification limits from 0.01 to 0.05 µg·L-1. It has been successfully applied for detection of PAHs in seawater samples.
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Affiliation(s)
- Xiaojie Sun
- Key Laboratory of Testing and Evaluation for Aquatic Product Safety and Quality, Ministry of Agriculture and Rural Affairs, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China
| | - Jie Tan
- Key Laboratory of Testing and Evaluation for Aquatic Product Safety and Quality, Ministry of Agriculture and Rural Affairs, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China
- Qingdao National Laboratory for Marine Science and Technology, Qingdao 266000, China
| | - Haiyan Ding
- Key Laboratory of Testing and Evaluation for Aquatic Product Safety and Quality, Ministry of Agriculture and Rural Affairs, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China
| | - Xiaojie Tan
- The Affiliated Hospital of Qingdao University, Qingdao 266000, China
| | - Jun Xing
- Key Laboratory of Analytical Chemistry for Biology and Medicine, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Lihong Xing
- Key Laboratory of Testing and Evaluation for Aquatic Product Safety and Quality, Ministry of Agriculture and Rural Affairs, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China
| | - Yuxiu Zhai
- Key Laboratory of Testing and Evaluation for Aquatic Product Safety and Quality, Ministry of Agriculture and Rural Affairs, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China
| | - Zhaoxin Li
- Key Laboratory of Testing and Evaluation for Aquatic Product Safety and Quality, Ministry of Agriculture and Rural Affairs, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China
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Sajid M. Dispersive liquid-liquid microextraction coupled with derivatization: A review of different modes, applications, and green aspects. Trends Analyt Chem 2018. [DOI: 10.1016/j.trac.2018.07.009] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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40
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Chai M, Chen Y, Xuan R, Ma J, Jin Z, Wang T, Qiu D, Zhang L, Zhang Y. Application of polyethyleneimine-modified attapulgite for the solid-phase extraction of chlorophenols at trace levels in environmental water samples. Anal Bioanal Chem 2018; 410:6643-6651. [PMID: 30076461 DOI: 10.1007/s00216-018-1271-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2018] [Revised: 06/25/2018] [Accepted: 07/13/2018] [Indexed: 01/12/2023]
Abstract
A polyethyleneimine (PEI)-modified attapulgite was employed as a new adsorbent for solid-phase extraction (SPE) of chlorophenols (CPs) from environmental water samples. Key factors pivotal to extraction efficiency, such as organic additive, pH, salt, sample loading volume, elution volume, and sample loading flow rate, were investigated. The maximum adsorption capacity of CPs reached 38 mg/g, and the adsorption behavior could be described with the Langmuir isotherm model. The developed SPE procedure was then tested on river water samples. Of this cartridge, 0.4 g could be used to treat up to 100 mL of the water sample, with high recoveries achieved. The limit of detection (S/N = 3) and the limit of quantification (S/N = 10) were in range of 0.08-0.56 and 0.27-1.88 ng/mL, respectively. The mean recoveries of CPs spiked in river water samples ranged from 84.4 to 96.8% with relative standard deviations for the intra-day and inter-day less than 6.30%. The developed SPE method exhibited high sensitivity, high selectivity, excellent accuracy, and good repeatability to the analysis of trace CPs in complicated aqueous matrices. Graphical abstract Graphical abstract contains poor quality and small text inside the artwork. Please do not re-use the file that we have rejected or attempt to increase its resolution and re-save. It is originally poor, therefore, increasing the resolution will not solve the quality problem. We suggest that you provide us the original format. We prefer replacement figures containing vector/editable objects rather than embedded images. Preferred file formats are eps, ai, tiff and pdf.The separated figures were attached, which named Graphical abstract. ᅟ.
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Affiliation(s)
- Mengsa Chai
- School of Materials and Chemical Engineering, Ningbo University of Technology, Ningbo, 315211, China
| | - Yihui Chen
- Xiangshan Entry-Exit Inspection and Quarantine Bureau, Xiangshan, 310014, China
| | - Rongrong Xuan
- Obstetrical Department, Affiliated Hospital of Medical School Ningbo University and Ningbo City Third Hospital, Ningbo, 315016, China
| | - Junfeng Ma
- Proteomics and Metabolomics Shared Resource, Georgetown University Medical Center, Washington, DC, 20057, USA
| | - Zhenfeng Jin
- School of Materials and Chemical Engineering, Ningbo University of Technology, Ningbo, 315211, China
| | - Tingting Wang
- School of Materials and Chemical Engineering, Ningbo University of Technology, Ningbo, 315211, China.
| | - Dan Qiu
- School of Materials and Chemical Engineering, Ningbo University of Technology, Ningbo, 315211, China
| | - Lihua Zhang
- Key Laboratory of Separation Science for Analytical Chemistry, National Chromatographic Research and Analysis Center, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
| | - Yukui Zhang
- Key Laboratory of Separation Science for Analytical Chemistry, National Chromatographic Research and Analysis Center, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
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41
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Dehnavi F, Dadfarnia S, Shabani AMH, Babaei A. Dispersive Liquid–Liquid Microextraction Based on Solidification of Floating Organic Drop for Isolation and Determination of Opium Alkaloids. JOURNAL OF ANALYTICAL CHEMISTRY 2018. [DOI: 10.1134/s106193481808004x] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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42
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Xu XY, Yan B, Lian X. Wearable glove sensor for non-invasive organophosphorus pesticide detection based on a double-signal fluorescence strategy. NANOSCALE 2018; 10:13722-13729. [PMID: 29989624 DOI: 10.1039/c8nr03352h] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
A wearable glove-based sensor has been developed for non-invasive organophosphorus pesticide (OP) monitoring via the fluorescent detection technology. The new "lab-on-a-glove" device integrates a flexible host material (CMC aerogel) and two fluorescent centers (EuMOFs for red and nanosized CDs for blue emissons). After characterizing the performance and stability of the sensor, qualitative and quantitative OP detections are successfully conducted on the surfaces of different agricultural products using swipe collection. The real-time detection system offers considerable advantages such as rapid response (30 s) due to the porous structures of CMC aerogel and MOFs, detection with the naked eye (the red to blue emission transition corresponds to an increase in the OP concentration) and high sensitivity (R2 = 0.99529, LOD = 89 nM) owing to the double-signal sensing strategy in which EuMOFs are the working fluorescence center and CDs are the reference fluorescence center. Compared with other OP detection methods, our strategy of using wearable device with the ratiometric fluorescence method leads to a convenient and reliable detection process for OP analysis. Also, considering its cost advantage, the glove-based sensor holds promise for practical applications in food safety and security.
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Affiliation(s)
- Xiao-Yu Xu
- School of Chemical Science and Engineering, Tongji University, Siping Road 1239, Shanghai 200092, P. R. China.
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Gao F, Lu W, Liu H, Li J, Chen L. Dispersive liquid-liquid microextraction of five chlorophenols in water samples followed by determination using capillary electrophoresis. Electrophoresis 2018; 39:2431-2438. [PMID: 30004131 DOI: 10.1002/elps.201800205] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2018] [Revised: 06/29/2018] [Accepted: 07/03/2018] [Indexed: 12/22/2022]
Abstract
Dispersive liquid-liquid microextraction (DLLME) coupled with CE was developed for simultaneous determination of five types of chlorophenols (CPs), namely 2-chlorophenol (2-CP), 4-chlorophenol (4-CP), 2,4-dichlorophenol (2,4-DCP), 2,6-dichlorophenol (2,6-DCP), and 2,4,6-trichlorophenol (2,4,6-TCP) in water samples. Several parameters affecting DLLME and CE conditions were systematically investigated. Under the optimized DLLME-CE conditions, the five CPs were separated completely within 7.5 min and good enrichment factors were obtained of 40, 193, 102, 15, and 107 for 4-CP, 2,4,6-TCP, 2,4-DCP, 2-CP, and 2,6-DCP, respectively. Good linearity was attained in the range of 1-200 μg/L for 2,4,6-TCP, 2,4-DCP, 2-300 μg/L for 4-CP and 2-CP, and 1-300 μg/L for 2,6-DCP, with correlation coefficients (r) over 0.99. The LOD (S/N = 3) and the LOQ (S/N = 10) were 0.31-0.75 μg/L and 1.01-2.43 μg/L, respectively. Recoveries ranging from 60.85 to 112.36% were obtained with tap, lake, and river water spiked at three concentration levels and the RSDs (for n = 3) were 1.31-11.38%. With the characteristics of simplicity, cost-saving, and environmental friendliness, the developed DLLME-CE method proved to be potentially applicable for the rapid, sensitive, and simultaneous determination of trace CPs in complicated water samples.
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Affiliation(s)
- Fangfang Gao
- College of Chemistry and Chemical Engineering, Yantai University, Yantai, P. R. China.,CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Research Center for Coastal Environmental Engineering Technology of Shandong Province, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, P. R. China
| | - Wenhui Lu
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Research Center for Coastal Environmental Engineering Technology of Shandong Province, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, P. R. China
| | - Huitao Liu
- College of Chemistry and Chemical Engineering, Yantai University, Yantai, P. R. China
| | - Jinhua Li
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Research Center for Coastal Environmental Engineering Technology of Shandong Province, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, P. R. China
| | - Lingxin Chen
- College of Chemistry and Chemical Engineering, Yantai University, Yantai, P. R. China.,CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Research Center for Coastal Environmental Engineering Technology of Shandong Province, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, P. R. China
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Bazregar M, Rajabi M, Yamini Y, Asghari A. Filter-based emulsification microextraction as an efficient method for the determination of chlorophenols by gas chromatography. J Sep Sci 2018; 41:3097-3104. [DOI: 10.1002/jssc.201800233] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Revised: 05/21/2018] [Accepted: 05/22/2018] [Indexed: 12/31/2022]
Affiliation(s)
| | - Maryam Rajabi
- Department of Chemistry; Semnan University; Semnan Iran
| | - Yadollah Yamini
- Department of Chemistry; Tarbiat Modares University; Tehran Iran
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Implementation of multicriteria decision analysis in design of experiment for dispersive liquid-liquid microextraction optimization for chlorophenols determination. J Chromatogr A 2018; 1553:25-31. [PMID: 29653780 DOI: 10.1016/j.chroma.2018.04.018] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2018] [Revised: 04/03/2018] [Accepted: 04/07/2018] [Indexed: 11/20/2022]
Abstract
A novel and efficient approach to optimization of extraction step prior the chromatographic determination of nine chlorinated phenols is described. It is based on the combination of design of experiments and multicriteria decision analysis. Such an approach is used to optimize dispersive liquid-liquid microextraction procedure for the determination of 9 chlorophenols in water samples. Three parameters are optimized - sample volume, volume of disperser solvent and extraction solvent. Combination of the technique for order of preference by similarity to ideal solution with central composite design allows to perform multi-analyte procedure optimization. It gives information about the efficiency of the system for every experimental plan point in terms of closeness to ideal solution. The optimal conditions for extraction of chlorophenols are 76 μL of extraction solvent, 0.6 mL of dispersive solvent and 6.7 mL of water sample. The presented approach has the potential to be applied in variety of optimization systems.
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Sheikh TA, Rahman MM, Asiri AM, Marwani HM. Sensitive 3-chlorophenol sensor development based on facile Er2O3/CuO nanomaterials for environmental safety. NEW J CHEM 2018. [DOI: 10.1039/c8nj00098k] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Low-dimensional Er2O3/CuO nanomaterials were synthesized by wet-chemical process and totally characterized with various conventional methods. The electrochemical approach could be a pioneer development in selective 3-CP sensor development using doped nano-structural materials by an electrochemical method for the various phenolic sensor applications for environmental safety in broad scales.
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Affiliation(s)
- Tahir Ali Sheikh
- Chemistry Department
- Faculty of Science
- King Abdulaziz University
- Jeddah 21589
- Saudi Arabia
| | - Mohammed M. Rahman
- Chemistry Department
- Faculty of Science
- King Abdulaziz University
- Jeddah 21589
- Saudi Arabia
| | - Abdullah M. Asiri
- Chemistry Department
- Faculty of Science
- King Abdulaziz University
- Jeddah 21589
- Saudi Arabia
| | - Hadi M. Marwani
- Chemistry Department
- Faculty of Science
- King Abdulaziz University
- Jeddah 21589
- Saudi Arabia
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47
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Transformation from gold nanoclusters to plasmonic nanoparticles: A general strategy towards selective detection of organophosphorothioate pesticides. Biosens Bioelectron 2018; 99:274-280. [DOI: 10.1016/j.bios.2017.07.066] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Revised: 07/10/2017] [Accepted: 07/28/2017] [Indexed: 02/06/2023]
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48
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Application of Response Surface Methodology and Genetic Algorithm for Optimization and Determination of Iron in Food Samples by Dispersive Liquid–Liquid Microextraction Coupled UV–Visible Spectrophotometry. ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING 2017. [DOI: 10.1007/s13369-017-2856-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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49
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Ebrahim K, Poursafa P, Amin MM. Development of a simple and valid method for the trace determination of phthalate esters in human plasma using dispersive liquid-liquid microextraction coupled with gas chromatography-mass spectrometry. J Sep Sci 2017; 40:4403-4410. [DOI: 10.1002/jssc.201700589] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2017] [Revised: 08/31/2017] [Accepted: 09/01/2017] [Indexed: 12/19/2022]
Affiliation(s)
- Karim Ebrahim
- Department of Environmental Health Engineering; School of Health, Isfahan University of Medical Sciences; Isfahan Iran
- Environment Research Center; Research Institute for Primordial Prevention of Non-Communicable Disease; Isfahan University of Medical Sciences; Isfahan Iran
| | - Parinaz Poursafa
- Department of Environmental Health Engineering; School of Health, Isfahan University of Medical Sciences; Isfahan Iran
- Environment Research Center; Research Institute for Primordial Prevention of Non-Communicable Disease; Isfahan University of Medical Sciences; Isfahan Iran
| | - Mohammad Mehdi Amin
- Department of Environmental Health Engineering; School of Health, Isfahan University of Medical Sciences; Isfahan Iran
- Environment Research Center; Research Institute for Primordial Prevention of Non-Communicable Disease; Isfahan University of Medical Sciences; Isfahan Iran
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50
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Application of Amine and Phosphotungstic Acid Groups as a Novel Bifunctional Fiber Coating in SPME-HPLC of Volatile Phenols in Water. Chromatographia 2017. [DOI: 10.1007/s10337-017-3402-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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