A compact electrothermal-flame tandem atomizer for highly sensitive atomic fluorescence spectrometry

Jiang, Xiaoming; Wu, Peng; Deng, Dongyan; Gao, Ying; Hou, Xiandeng; Zheng, Chengbin

doi:10.1039/c2ja30110e

Cited by 15 publications

(9 citation statements)

References 45 publications

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“…Therefore, many efforts have been devoted to improve both sensitivity and throughput. [3][4][5] Among these, chemical vapor generation (CVG) provides an elegant example of simultaneously improving sensitivity, sample preparation strategies and throughput. Compared to conventional pneumatic nebulization (PN), CVG provides several unique advantages of higher efficiency of sample introduction ($100%), less matrix and spectral interferences and better sensitivity and selectivity.…”

Section: Introductionmentioning

confidence: 99%

Dual-mode chemical vapor generation for simultaneous determination of hydride-forming and non-hydride-forming elements by atomic fluorescence spectrometry

Wang

Jiang

et al. 2014

Analyst

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A dual-mode chemical vapor generation integrating hydride generation and photochemical vapor generation was developed for simultaneous multi-element analysis of hydride-forming and non-hydride-forming elements by atomic fluorescence spectrometry. Four elements were selected as model elements of hydride-forming (As, Cd) and non-hydride-forming (Ni, Fe) elements to validate this proposed method. Standard or sample solutions were separately pumped to mix with tetrahydroborate, and concentrated formic acid and ammonia, and then directed to a hydride generator and a photochemical reactor to realize simultaneous hydride generation and photochemical vapor generation, respectively. Optimum conditions for dual-mode chemical vapor generation were carefully investigated. Under the optimized conditions, limits of detection of 0.05, 0.008, 0.8 and 0.1 μg L(-1) were obtained for As, Cd, Fe and Ni, respectively. The precisions were 5.0, 5.5, 4.3 and 4.5% (n = 6, RSDs) for 2 μg L(-1) of As, 1 μg L(-1) of Cd, 50 μg L(-1) of Fe and 10 μg L(-1) of Ni, respectively. This method was validated for accuracy with three certified reference water samples and applied to the simultaneous determination of these elements in a tap water sample with spike recoveries in the range of 95-99%.

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Section: Introductionmentioning

confidence: 99%

Dual-mode chemical vapor generation for simultaneous determination of hydride-forming and non-hydride-forming elements by atomic fluorescence spectrometry

Wang

Jiang

et al. 2014

Analyst

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“…1 Apart from the well-established ame and graphite furnace atomizers in atomic absorption spectrometry, [2][3][4][5] there has been great progress in the development of various atomizers (such as tungsten coil atomizers). [6][7][8] Because of the growing demand for miniaturized instruments, there is an increasing interest in developing small size plasma as the atomizer for atomic spectrometry. Several plasma sources have thus been explored, including inductively coupled plasma (ICP), [9][10][11] capacitively coupled plasma torch (CCP) 12,13 and dielectric barrier discharge (DBD).…”

Section: Introductionmentioning

confidence: 99%

UV-induced atomization of gaseous mercury hydrides for atomic fluorescence spectrometric detection of inorganic and organic mercury after high performance liquid chromatographic separation

Huang

Hou

et al. 2013

J. Anal. At. Spectrom.

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A novel, simple, low power, low temperature (<45 C) and high efficiency atomization technique using ultraviolet (UV) radiation was proposed for the atomization of gaseous mercury hydrides for their determination by atomic fluorescence spectrometry (AFS). This technique was used for the detection of inorganic mercury (Hg 2+ ) and organic mercury (MeHg + and EtHg + ) after high performance liquid chromatographic separation. In the proposed method, with 0.5% (m/v) KBH 4 used as a reductant, inorganic mercury was reduced to elemental mercury, whereas the organic mercury species formed their respective volatile organic mercury hydrides (MeHgH and EtHgH) which were flushed to the UV atomizer for atomization and AFS detection. Under the optimized experimental conditions, the limits of detection were found to be 0.38, 0.41 and 0.56 mg L À1 , and the relative standard deviations (n ¼ 3) were 1.1%, 2.6% and 1.4% for Hg 2+ , MeHg + and EtHg + , respectively. The accuracy of the proposed method was validated by analyzing a certified reference sample (fish muscle tissue) with a satisfactory analytical result, and two water samples with recoveries in the range of 93.8-97.4%.

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“…A commercial hydride generation nondispersive atomic fluorescence spectrometer (AFS-9600, Beijing Haiguang Instrumental Co., Beijing, China) fitted with a quartz gas–liquid separator (GLS), a quartz atomizer, and a coded high-intensity nickel hollow cathode lamp was used for quantification. The instrument has earlier been described in detail. − The volatile nickel carbonyl was generated using a homemade flow injection photochemical vapor generation system, which consists of two three-channel peristaltic pumps (BT100-02, Baoding Qili Precision Pump Co., Ltd., Baoding, China), a six-port injection valve, and a photochemical reactor. The six-port injection valve, fitted with a 2 mL polytetrafluoroethylene (PTFE) sample loop, was used to transport the Ni 2+ –histidine complex solution to mix with a solution containing 80% (v/v) formic acid prior to generation of Ni(CO) 4 in the photochemical reactor.…”

Section: Methodsmentioning

confidence: 99%

Recyclable Decoration of Amine-Functionalized Magnetic Nanoparticles with Ni²⁺ for Determination of Histidine by Photochemical Vapor Generation Atomic Spectrometry

Wang

Zheng

et al. 2013

Anal. Chem.

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It is critically important to accurately determine histidine since it is an indicator for many diseases when at an abnormal level. Here, an inexpensive and simple method using an amine-functionalized magnetic nanoparticle-based Ni(2+)-histidine affinity pair system was developed for highly sensitive and selective detection of histidine in human urine by photochemical vapor generation atomic spectrometry. Ni(2+) was first bound to the amine groups of the amine-functionalized magnetic nanoparticles and then liberated to solution via the highly specific interaction between the histidine and Ni(2+) in the presence of histidine. The liberated histidine-Ni(2+) complex was exposed to UV irradiation in the presence of formic acid to form gaseous nickel tetracarbonyl, which was separated from the sample matrix and determined by atomic absorption/fluorescence spectrometry. Compared to other methods, this approach promises high sensitivity, simplicity in design, and convenient operation. The need for organic solvents, enzymatic reactions, separation processes, chemical modification, expensive instrumentations, and sophisticated and complicated pretreatment is minimized with this strategy. A limit of detection of 1 nM was obtained and provided tens-to-hundreds of fold improvements over that achieved with conventional methods. The protocol was evaluated by analysis of several urine samples with good recoveries and showed great potential for practical application.

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A compact electrothermal-flame tandem atomizer for highly sensitive atomic fluorescence spectrometry

Cited by 15 publications

References 45 publications

Dual-mode chemical vapor generation for simultaneous determination of hydride-forming and non-hydride-forming elements by atomic fluorescence spectrometry

Dual-mode chemical vapor generation for simultaneous determination of hydride-forming and non-hydride-forming elements by atomic fluorescence spectrometry

UV-induced atomization of gaseous mercury hydrides for atomic fluorescence spectrometric detection of inorganic and organic mercury after high performance liquid chromatographic separation

Recyclable Decoration of Amine-Functionalized Magnetic Nanoparticles with Ni²⁺ for Determination of Histidine by Photochemical Vapor Generation Atomic Spectrometry

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A compact electrothermal-flame tandem atomizer for highly sensitive atomic fluorescence spectrometry

Cited by 15 publications

References 45 publications

Dual-mode chemical vapor generation for simultaneous determination of hydride-forming and non-hydride-forming elements by atomic fluorescence spectrometry

Dual-mode chemical vapor generation for simultaneous determination of hydride-forming and non-hydride-forming elements by atomic fluorescence spectrometry

UV-induced atomization of gaseous mercury hydrides for atomic fluorescence spectrometric detection of inorganic and organic mercury after high performance liquid chromatographic separation

Recyclable Decoration of Amine-Functionalized Magnetic Nanoparticles with Ni2+ for Determination of Histidine by Photochemical Vapor Generation Atomic Spectrometry

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Recyclable Decoration of Amine-Functionalized Magnetic Nanoparticles with Ni²⁺ for Determination of Histidine by Photochemical Vapor Generation Atomic Spectrometry