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Microwave Plasma Torch Mass Spectrometry for some Rare Earth Elements. ARAB J CHEM 2022. [DOI: 10.1016/j.arabjc.2022.104379] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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Tuning the Sensing Properties of N and S Co-Doped Carbon Dots for Colorimetric Detection of Copper and Cobalt in Water. SENSORS 2022; 22:s22072487. [PMID: 35408102 PMCID: PMC9003535 DOI: 10.3390/s22072487] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Revised: 03/21/2022] [Accepted: 03/22/2022] [Indexed: 01/05/2023]
Abstract
In this study, nitrogen and sulfur co-doped carbon dots (NS-CDs) were investigated for the detection of heavy metals in water through absorption-based colorimetric response. NS-CDs were synthesized by a simple one-pot hydrothermal method and characterized by TEM, STEM-coupled with energy dispersive X-ray analysis, NMR, and IR spectroscopy. Addition of Cu(II) ions to NS-CD aqueous solutions gave origin to a distinct absorption band at 660 nm which was attributed to the formation of cuprammonium complexes through coordination with amino functional groups of NS-CDs. Absorbance increased linearly with Cu(II) concentration in the range 1–100 µM and enabled a limit of detection of 200 nM. No response was observed with the other tested metals, including Fe(III) which, however, appreciably decreased sensitivity to copper. Increase of pH of the NS-CD solution up to 9.5 greatly reduced this interference effect and enhanced the response to Cu(II), thus confirming the different nature of the two interactions. In addition, a concurrent response to Co(II) appeared in a different spectral region, thus suggesting the possibility of dual-species multiple sensitivity. The present method neither requires any other reagents nor any previous assay treatment and thus can be a promising candidate for low-cost monitoring of copper onsite and by unskilled personnel.
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Contemporary Research Progress on the Detection of Polycyclic Aromatic Hydrocarbons. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph19052790. [PMID: 35270481 PMCID: PMC8910359 DOI: 10.3390/ijerph19052790] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Revised: 02/01/2022] [Accepted: 02/02/2022] [Indexed: 02/06/2023]
Abstract
Polycyclic aromatic hydrocarbons (PAHs) are a class of the most common and widespread contaminants. The accumulation of PAHs has made a certain impact on the environment and is seriously threatening human health. Numerous general analytical methods suitable for PAHs were developed. With the development of economy, the environmental problems of PAHs in modern society are more extensive and prominent, and attract more attention from environmental scientists and analysts. Deeper understanding of the properties of PAHs depends on the advent of detection methods, which can also be more conducive to promoting the protection of the environment. Till now, more sensitive, more high-speed and more high-throughput analytical tools are being invented and have played important roles in the research of PAHs. In this short review article, we focused mainly on the contemporary analytical methods about PAHs. We started with a brief review on the hazards, migration, distribution and traditional analysis methods of PAHs in recent years, including liquid chromatography, gas chromatography, surface enhanced Raman spectroscopy and so on. We also presented the applications of the modern ambient mass spectrometry, especially microwave plasma torch mass spectrometry, in the detection of PAHs, as well as the far out novel results in our lab by using microwave plasma torch (MPT) mass spectrometry; for example, some new insights about Birch reduction, regular hydrogen addition and the robustness of molecular structure. These studies have demonstrated the versatility of MPT MS as a platform in the research of PAHs.
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Environmental molybdate monitoring based on vanadium oxide quantum dots-derived fluorescent strategy. Microchem J 2021. [DOI: 10.1016/j.microc.2021.106702] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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Miao M, Zhao G, Cheng P, Li J, Zhang J, Pan H. Rapid Analysis of Trace Phthalates by Spray-Inlet Microwave Plasma Torch Ionization-Tandem Mass Spectrometry in Commercial Perfumes. J AOAC Int 2021; 105:54-61. [PMID: 34636904 DOI: 10.1093/jaoacint/qsab133] [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: 07/23/2021] [Revised: 09/27/2021] [Accepted: 09/27/2021] [Indexed: 11/13/2022]
Abstract
BACKGROUND The less volatile fraction of perfumes can be easily contaminated by phthalates esters (PAEs) which are endocrine-disrupting chemicals during the production, bottling and transportation processes. It is necessary to establish an innovative and rapid method to determine the trace PAEs in commercial perfumes. OBJECTIVE Hence, self-built spray-inlet microwave plasma torch ionization coupled with a quadrupole time-of-flight tandem mass spectrometer (QTOF-MS) was developed for direct analysis of PAEs in perfumes with no sample pretreatment. METHODS Perfumes were sprayed to the MPT's flame directly by sampling pump in 10 µL/min and the ions produced by MPT were introduced into QTOF-MS, the MPT worked at 2450 MHz and 40 W in the 800 ml/min flow rate of argon. RESULTS For the developed method, excellent linearities were obtained and the correlation coefficient of Di-n-pentyl Phthalate was 0.9799 and the rest were larger than 0.99. The LODs and LOQs were obtained in the ranges of 1.452-18.96 ng/g and 4.839-63.19 ng/g, respectively. The spiked recoveries of PAEs were in the range of 100.1-105.2% with satisfied intra-day RSDs and inter-day RSDs ranging from 1.51-4.34% and 3.45-5.65%, respectively. PAEs in commercial perfumes were successfully detected by spray-inlet MPT-MS2 with low concentrations from 0.036-1.352 µg/g. CONCLUSIONS The method is a promising tool in field analysis of PAEs in cosmetic solutions where rapid qualitative and quantitative analysis in needed. HIGHLIGHTS The method was satisfactorily applied to the analysis of commercial perfume samples within 30 s, and earned merits such as simplicity, sensitivity, environmental friendliness and ease operation.
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Affiliation(s)
- Meng Miao
- Shanghai University of Medicine & Health Sciences, School of Medical Technology, Shanghai, 201318 China
| | - Gaosheng Zhao
- Zhejiang University, College of Control Science and Engineering, Hangzhou, 310000 China
| | - Ping Cheng
- Shanghai University, School of Environmental and Chemical Engineering, Shanghai, 200444 China
| | - Jia Li
- Shanghai University of Medicine & Health Sciences, School of Medical Technology, Shanghai, 201318 China
| | - Jingyi Zhang
- Shanghai University of Medicine & Health Sciences, School of Medical Technology, Shanghai, 201318 China
| | - Hongzhi Pan
- Shanghai University of Medicine & Health Sciences, Collaborative Research Center, Shanghai, 200120 China
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Jiang T, Jiang F, Zhuo Z, Liu H, Hu B, Li M, Li L, Huang Z, Zhou Z, Zhu Z. Comparative study on a kilowatt-MPT-MS-based method with two ion polarity modes for the inert palladium metal. Analyst 2021; 146:1760-1771. [PMID: 33475106 DOI: 10.1039/d0an02071k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Inert metals are of much importance and play a key role in modern industrial manufacturing. The analytical techniques of inert metals remain challenging. In particular, the mass spectrometry of inert metal elements is yet to be further developed, which also limits the contemporary conceptual in situ analysis of inert metals. As the representative element, the mass spectral detection of palladium is critical and of far-reaching significance. Herein, we developed a mass spectrometry method, which can be used for the high-speed and in situ analysis of palladium, and even for other inert metals. Combining the line ion trap mass spectrometer with the versatile ambient ionization source, a novel kilowatt microwave plasma torch (MPT) can be used to obtain the fully characteristic MPT mass spectra of palladium. Detailed multistage tandem mass spectra show that the general form of target ions is [M(O2)x(NO)mNy(NO2)n]- for the negative ion mode and [M(H2O)x(NO2)y(N2)m]+ for the positive ion mode. Moreover, the formation and evolution of these palladium complex ions were reasonably derived based on the analysis of MPT background mass spectra. This mass spectrometric technique is also suitable for the determination of the palladium-containing solution in the sub-trace level. Semi-quantitative results showed that the detecting ability for palladium in the negative mode is better than that of the positive mode. Under the negative ion mode, the limit of detection (LOD) for m/z 259 were evaluated to be 0.5 μg L-1 under the optimized conditions of the negative mode, with the linear range of 1-100 μg·L-1 (R2 ≥ 0.9985) and the relative standard deviation (RSD, n = 11) being in the range of 1.20%-5.98% (refer to Table S3). Our experimental data showed that MPT-MS was a promising technique for providing another alternative in the on-site analysis of liquid samples and other intimate relevant fields, as the supplement of ICP-MS for the detection of inert metal elements. On the other hand, this work will also certainly promote the more broad applications of platinum-group elements (PGE) in modern science and industry.
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Affiliation(s)
- Tao Jiang
- Institute of Mass Spectrometry and Atmospheric Environment, Guangdong Provincial Engineering Research Center for Online Source Apportionment System of Air Pollution, Jinan University, Guangzhou, Guangdong 510632, China. and Guangzhou Hexin Instrument Co., Ltd, Guangzhou 510530, China
| | - Feng Jiang
- Key Laboratory of Environment and Resource Utilization of Poyang Lake, Ministry of Education, School of Environment and Chemical Engineering, Nanchang University, Nanchang 330031, China
| | - Zemin Zhuo
- Institute of Mass Spectrometry and Atmospheric Environment, Guangdong Provincial Engineering Research Center for Online Source Apportionment System of Air Pollution, Jinan University, Guangzhou, Guangdong 510632, China.
| | - Huaxin Liu
- School of Chemistry and Environmental Science, Shangrao Normal University, Jiangxi 334001, China.
| | - Bin Hu
- Institute of Mass Spectrometry and Atmospheric Environment, Guangdong Provincial Engineering Research Center for Online Source Apportionment System of Air Pollution, Jinan University, Guangzhou, Guangdong 510632, China.
| | - Mei Li
- Institute of Mass Spectrometry and Atmospheric Environment, Guangdong Provincial Engineering Research Center for Online Source Apportionment System of Air Pollution, Jinan University, Guangzhou, Guangdong 510632, China. and Guangzhou Hexin Instrument Co., Ltd, Guangzhou 510530, China
| | - Lei Li
- Institute of Mass Spectrometry and Atmospheric Environment, Guangdong Provincial Engineering Research Center for Online Source Apportionment System of Air Pollution, Jinan University, Guangzhou, Guangdong 510632, China. and Guangzhou Hexin Instrument Co., Ltd, Guangzhou 510530, China
| | - Zhengxu Huang
- Institute of Mass Spectrometry and Atmospheric Environment, Guangdong Provincial Engineering Research Center for Online Source Apportionment System of Air Pollution, Jinan University, Guangzhou, Guangdong 510632, China. and Guangzhou Hexin Instrument Co., Ltd, Guangzhou 510530, China
| | - Zhen Zhou
- Institute of Mass Spectrometry and Atmospheric Environment, Guangdong Provincial Engineering Research Center for Online Source Apportionment System of Air Pollution, Jinan University, Guangzhou, Guangdong 510632, China.
| | - Zhiqiang Zhu
- School of Chemistry and Environmental Science, Shangrao Normal University, Jiangxi 334001, China.
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An easy and simple kilowatt-MPT-MS-based metal elements analysis method for rapid environmental water monitoring: An example from Poyang Lake of China. ARAB J CHEM 2020. [DOI: 10.1016/j.arabjc.2020.09.024] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
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Aydin Z, Keles M. Colorimetric Detection of Copper(II) Ions Using Schiff‐Base Derivatives. ChemistrySelect 2020. [DOI: 10.1002/slct.202001041] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Ziya Aydin
- Vocational School of Technical Sciences Karamanoğlu Mehmetbey University 70200 Karaman Turkey
| | - Mustafa Keles
- Department of Chemistry Faculty of Arts and Sciences Osmaniye Korkut Ata University 80010 Osmaniye Turkey
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TEEPARUKSAPUN K, PRASONGCHAN N, THAWONSUWAN A. Alpha-Lipoic Acid Functionalized Silver Nanoparticles for Colorimetric Detection of Copper Ion. ANAL SCI 2019; 35:371-377. [DOI: 10.2116/analsci.18p442] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Kosin TEEPARUKSAPUN
- Science Program, Department of General Education, Faculty of Liberal Arts, Rajamangala University of Technology Srivijaya
| | - Nicha PRASONGCHAN
- Science Program, Department of General Education, Faculty of Liberal Arts, Rajamangala University of Technology Srivijaya
| | - Auttachai THAWONSUWAN
- Science Program, Department of General Education, Faculty of Liberal Arts, Rajamangala University of Technology Srivijaya
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Miao M, Zhao G, Wang Y, Xu L, Dong J, Cheng P. Spray-inlet microwave plasma torch ionization tandem mass spectrometry for the direct detection of drug samples in liquid solutions. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2017; 31:2092-2100. [PMID: 28913969 DOI: 10.1002/rcm.7991] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2017] [Revised: 08/13/2017] [Accepted: 09/05/2017] [Indexed: 06/07/2023]
Abstract
RATIONALE Drug abuse or dependence results in a series of social problems, including crime and traffic accidents. Spray-inlet microwave plasma torch tandem mass spectrometry (MPT-MS/MS) was developed and used for the direct detection of such drugs in liquid solutions. METHODS Drug sample solutions were directly sprayed into the flame of an MPT by a sampling pump and the ions produced by Penning ionization and ion-molecule reactions were guided into a quadrupole time-of-flight (QTOF) tandem mass spectrometer for mass analysis. The MPT was operated at 40 W and 2.45 GHz in a 700 mL/min argon flow both for the inner and middle plasma. RESULTS Intact quasi-molecular and molecular ions of various drugs were successfully characterized by spray-inlet MPT-MS/MS. The analysis of one sample was finished within 30 s. Furthermore, the method exhibited excellent efficiency, precision and sensitivity, and the limits of detection and limits of quantification of the samples in methanol were in the range of 5.25-60.0 and 17.5-200 ng g-1 , respectively. Excellent linearities with coefficients of determination (R2 ) of 0.9627-0.9980 were verified in the range 0.05-50 μg g-1 . Four different beverages purchased locally were also analyzed with spray-inlet MPT-MS/MS, and caffeine was directly determined in two of the beverages. By adding six standard drug samples to sport drinks (each drug was 1 μg g-1 ) and Chinese spirit (each drug was 0.1 μg g-1 ), all the drugs except for caffeine were detected successfully. CONCLUSIONS This study indicates that spay-inlet MPT-MS/MS is an effective method for direct and rapid identification of drug solutions, and it has substantial potential for fast and sensitive drug residue detection.
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Affiliation(s)
- Meng Miao
- School of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444, China
| | - Gaosheng Zhao
- College of Control Science and Engineering, Zhejiang University, Hangzhou, 310000, China
| | - Yaliang Wang
- School of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444, China
| | - Li Xu
- School of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444, China
| | - Junguo Dong
- School of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444, China
| | - Ping Cheng
- School of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444, China
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Yang J, Zheng M, Liu Q, Zhu M, Yang C, Zhang Y, Zhu Z. The Study of Titanium and Zirconium Ions in Water by MPT-LTQ Mass Spectrometry in Negative Mode. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2017; 14:ijerph14101129. [PMID: 28954404 PMCID: PMC5664630 DOI: 10.3390/ijerph14101129] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/07/2017] [Revised: 09/03/2017] [Accepted: 09/18/2017] [Indexed: 01/14/2023]
Abstract
Microwave plasma torches (MPTs) can be used as simple and low power-consumption ambient ion sources. When MPT-mass spectrometry (MPT-MS) is applied in the detection of some metal elements, the metallic ions exhibit some novel features which are significantly different with those obtained by the traditional inductively coupled plasma (ICP)-mass spectrometry (ICP-MS) and may be helpful for metal element analysis. As the representative elements of group IVA, titanium and zirconium are both of importance and value in modern industry, and they have impacts on human health. Here, we first provide a study on the complex anions of titanium and zirconium in water by using the MPT as ion source and a linear ion trap mass spectrometer (LTQ-MS). These complex anions were produced in the plasma flame by an aqueous solution flowing through the central tube of the MPT, and were introduced into the inlet of the mass spectrometry working in negative ion mode to get the feature mass spectrometric signals. Moreover, the feature fragment patterns of these ions in multi-step collision- induced dissociation processes have been explained. Under the optimized conditions, the limit of detection (LOD) using the MS2 (the second tandem mass spectrometry) procedure was estimated to be at the level of 10 μg/L for titanium and 20 μg/L for zirconium with linear dynamics ranges that cover at least two orders of magnitude, i.e., between 0–500 μg/L and 20–200 μg/L, respectively. These experimental data demonstrated that the MPT-MS is a promising and useful tool in field analysis of titanium and zirconium ions in water, and can be applied in many fields, such as environmental control, hydrogeology, and water quality inspection. In addition, MPT-MS could also be used as a supplement of ICP-MS for the rapid and on-site analysis of metal ions.
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Affiliation(s)
- Junqing Yang
- Information Engineering Faculty, Jiangxi Modern Polytechnic College, Nanchang 330095, China;
| | - Mei Zheng
- School of Chemistry and Environmental Science, Shangrao Normal University, Jiangxi 334001, China; (M.Z.); (M.Z.); (C.Y.)
| | - Qiuju Liu
- Jiangxi Key Laboratory for Mass Spectrometry and Instrumentation, East China University of Technology, Nanchang 330013, China; (Q.L.); (Y.Z.)
| | - Meiling Zhu
- School of Chemistry and Environmental Science, Shangrao Normal University, Jiangxi 334001, China; (M.Z.); (M.Z.); (C.Y.)
| | - Chushan Yang
- School of Chemistry and Environmental Science, Shangrao Normal University, Jiangxi 334001, China; (M.Z.); (M.Z.); (C.Y.)
| | - Yan Zhang
- Jiangxi Key Laboratory for Mass Spectrometry and Instrumentation, East China University of Technology, Nanchang 330013, China; (Q.L.); (Y.Z.)
| | - Zhiqiang Zhu
- School of Chemistry and Environmental Science, Shangrao Normal University, Jiangxi 334001, China; (M.Z.); (M.Z.); (C.Y.)
- Jiangxi Key Laboratory for Mass Spectrometry and Instrumentation, East China University of Technology, Nanchang 330013, China; (Q.L.); (Y.Z.)
- Correspondence:
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