Determination of nitrite in water samples using atmospheric pressure glow discharge microplasma emission and chemical vapor generation of NO species

Zheng, Huajun; Guan, Xuedi; Mao, Xuefei; Zhu, Zhenli; Yang, Chun; Qiu, Hengwei; Hu, Shenghong

doi:10.1016/j.aca.2017.11.060

Cited by 20 publications

(11 citation statements)

References 46 publications

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“…In OES, various microplasmas have been used as excitation sources for compact instrumentation because of their unique advantages, including small size, low gas and power consumption, easy operation, and low manufacturing and running costs. − These excellent characteristics also make them suitable for real-time and field analysis. Various types of microplasma-based excitation sources have been reported in recent years, such as microdischarge plasma including glow discharge (GD), − corona discharge (CD), dielectric barrier discharge (DBD), − and point discharge (PD). , They have been predominantly used for OES determination of various analytes, such as metal elements, inorganic anions, volatile carbon-containing compounds, and halohydrocarbons. − …”

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confidence: 99%

Point Discharge Microplasma Optical Emission Spectrometer: Hollow Electrode for Efficient Volatile Hydride/Mercury Sample Introduction and 3D-Printing for Compact Instrumentation

et al. 2019

Anal. Chem.

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A miniaturized optical emission spectrometer was constructed with improved point discharge microplasma as an excitation source to enhance sample introduction efficiency and excitation efficiency. By using a hollow electrode as one of the discharge electrodes, analytecontaining chemical vapor yielded via hydride generation was transported and confined into the hollow electrode and subsequently guided into the microplasma with high sample introduction efficiency. Moreover, gaseous analyte species were directly diffused from inside the electrode into the center of the microplasma, instead of traditional external diffusion into the microplasma, resulting in sufficient participation in interactions and excitation in the plasma; thus, high excitation efficiency and stability can be achieved. A 3D-printing technique was used to fabricate some components for compact integration of this spectrometer. Physical characteristics of the microplasma, 3D-printing, and experimental parameters were all investigated to better understand the excitation capability and obtain optimal analytical performance. Under optimized conditions, As, Bi, Ge, Hg, Pb, Sb, Se, and Sn were successfully detected, with detection limits of 2.5, 0.44, 1.6, 0.10, 2.8, 1.5, 31, and 0.24 μg L −1 , respectively, and relative standard deviations all less than 4%. It was applied to the analysis of Certified Reference Materials (water, soil, and biological samples) and real water samples with satisfactory results. Because of its advantages of compactness, robustness, easy fabrication, and cost-effectiveness, it has a great prospect as a portable spectrometer for field analytical chemistry.

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confidence: 99%

Point Discharge Microplasma Optical Emission Spectrometer: Hollow Electrode for Efficient Volatile Hydride/Mercury Sample Introduction and 3D-Printing for Compact Instrumentation

et al. 2019

Anal. Chem.

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“…Actually, microplasma molecular emission spectrometry (MES) has been recently used for the determination of nitrate, nitrite, and ammonium via the generation of their corresponding volatile species (such as N 2 and NO) and monitoring their molecular emission. , Due to the generation of N 2 from the reaction between nitrite and cyclamate, initial experiments tended to quantify nitrite via the detection of N 2 molecular emission bands. Standard solutions containing 20 and 50 mg L –1 NO 2 – as well as a blank solution were analyzed by the μPD-MES system, respectively.…”

Section: Resultsmentioning

confidence: 99%

“…Recently, the application scope of microplasma optical emission spectrometry (MP-OES) has been significantly extended from metal ions (Hg, Cd, As, Pb, etc. ) − to nonmetallic analytes (total organic carbon, NH 3 , NO 3 – , NO 2 – , and carboxyl group) − when chemical vapor generation (CVG) was used as a sample introduction means. Although CVG coupling to MP has been successfully used to determine nitrite via monitoring the molecular emission of NO, the nitrogen contained in discharge gas resulted in a high blank, thus deteriorating the analytical performance. , …”

mentioning

confidence: 99%

Headspace Solid-Phase Microextraction Following Chemical Vapor Generation for Ultrasensitive, Matrix Effect-Free Detection of Nitrite by Microplasma Optical Emission Spectrometry

et al. 2021

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A new chemical vapor generation method coupled with headspace solid-phase microextraction miniaturized point discharge optical emission spectrometry (HS-SPME−μPD-OES) for the sensitive and matrix effect-free detection of nitrite in complex samples is described. In an acidic medium, the volatile cyclohexene was generated from cyclamate in the presence of nitrite, which was volatilized to the headspace of the container, efficiently separated, and preconcentrated by HS-SPME. Consequently, the SPME fiber was transferred to a laboratoryconstructed thermal desorption chamber wherein the cyclohexene was thermally desorbed and swept into μPD-OES for its sensitive quantification via monitoring the carbon atomic emission line at 193.0 nm. As a result, the quantification of nitrite was accomplished through the determination of cyclohexene. The application of HS-SPME as a sampling technique not only simplifies the experimental setup of μPD-OES but it also preconcentrates and separates cyclohexene from N 2 and sample matrices, thus eliminating the interference from water vapor and N 2 and significantly improving the analytical performance on the determination of nitrite. Under the optimum experimental conditions, a limit of detection of 0.1 μg L −1 was obtained, which is much better than that obtained by conventional methods. The precision, expressed as relative standard deviation, was better than 3.0% at a concentration of 10 μg L −1 . The proposed method provides several advantages of portability, simplicity, high sensitivity, and low energy consumption and eliminates expensive instruments and matrix interference, thus retaining a promising potential for the rapid, sensitive, and field analysis of nitrite in various samples.

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“…Various non-thermal plasmas sources can be utilized for NF as e.g. dielectric barrier discharges (DBDs) [15][16][17] , DC/pulsed plasmas-liquid systems [18][19][20] , spark-like plasmas 21,22 , gliding arc discharges [23][24][25] , inductively coupled RF (IC-RF) 26 or microwave plasmas 27,28 . In view of applications, efforts must be made to study different types of plasma reactors in order to obtain an in-depth and global understanding of NF by plasma.…”

Section: Introductionmentioning

confidence: 99%

Potential of N₂/O₂atmospheric pressure needle-water DC microplasmas for nitrogen fixation: nitrite-free synthesis of nitrates

Pattyn

Maira

Rémy

et al. 2020

Phys. Chem. Chem. Phys.

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Determination of nitrite in water samples using atmospheric pressure glow discharge microplasma emission and chemical vapor generation of NO species

Cited by 20 publications

References 46 publications

Point Discharge Microplasma Optical Emission Spectrometer: Hollow Electrode for Efficient Volatile Hydride/Mercury Sample Introduction and 3D-Printing for Compact Instrumentation

Point Discharge Microplasma Optical Emission Spectrometer: Hollow Electrode for Efficient Volatile Hydride/Mercury Sample Introduction and 3D-Printing for Compact Instrumentation

Headspace Solid-Phase Microextraction Following Chemical Vapor Generation for Ultrasensitive, Matrix Effect-Free Detection of Nitrite by Microplasma Optical Emission Spectrometry

Potential of N₂/O₂atmospheric pressure needle-water DC microplasmas for nitrogen fixation: nitrite-free synthesis of nitrates

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Determination of nitrite in water samples using atmospheric pressure glow discharge microplasma emission and chemical vapor generation of NO species

Cited by 20 publications

References 46 publications

Point Discharge Microplasma Optical Emission Spectrometer: Hollow Electrode for Efficient Volatile Hydride/Mercury Sample Introduction and 3D-Printing for Compact Instrumentation

Point Discharge Microplasma Optical Emission Spectrometer: Hollow Electrode for Efficient Volatile Hydride/Mercury Sample Introduction and 3D-Printing for Compact Instrumentation

Headspace Solid-Phase Microextraction Following Chemical Vapor Generation for Ultrasensitive, Matrix Effect-Free Detection of Nitrite by Microplasma Optical Emission Spectrometry

Potential of N2/O2atmospheric pressure needle-water DC microplasmas for nitrogen fixation: nitrite-free synthesis of nitrates

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Potential of N₂/O₂atmospheric pressure needle-water DC microplasmas for nitrogen fixation: nitrite-free synthesis of nitrates