Direct Determination of Lead in Sea Water by High-Resolution Atomic Absorption Spectroscopy Using a Mixed Modifier Barium Nitrate–Hydrofluoric Acid

Sobolev, Nikita; Ivanchenko, Nikolay; Kozhevnikov, A. Yu.

doi:10.1134/s1061934819020126

Cited by 8 publications

(5 citation statements)

References 10 publications

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“…This promotes a great demand for miniaturized and even portable instruments for field analysis of trace heavy metals. Although traditional analytical atomic spectrometry, including atomic absorption spectrometry (AAS), , atomic fluorescence spectrometry (AFS), , optical emission spectrometry (OES), − and atomic mass spectrometry (MS), − are the most mature and predominant analytical methodologies for inorganic elements, with high sensitivity, selectivity, and accuracy, they also suffer several severe shortcomings for field analysis, including large instruments, high power consumption, and complicated instrumental operation derived from their initial design based on laboratory applications. Therefore, it is greatly desired to develop miniaturized atomic spectrometers for field analysis of heavy metals …”

Section: Introductionmentioning

confidence: 99%

Array Point Discharge as Enhanced Tandem Excitation Source for Miniaturized Optical Emission Spectrometer

Zhang

Tang

et al. 2023

Anal. Chem.

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A new compact tandem excitation source was designed and constructed by using an array point discharge (ArrPD) microplasma for a miniaturized optical emission spectrometer through coupling a hydride generation (HG) unit as a sample introduction device. Three pairs of point discharges were arranged in sequence in a narrow discharge chamber to construct the ArrPD microplasma, for improved excitation capability owing to the serial excitation. Besides, the discharge plasma region was greatly enlarged, therefore, more gaseous analytes could be intercepted to enter into the microplasma for sufficient excitation, for improved excitation efficiency and OES signal. To better understand the effectiveness of the proposed ArrPD source, a new instrument for simultaneous detection of atomic emission and absorption spectral responses was also proposed, designed, and constructed to reveal the excitation and enhancement process in the discharge chamber. Under the optimized conditions, the limits of detection (LODs) of As, Ge, Hg, Pb, Sb, Se, and Sn were 0.7, 0.4, 0.05, 0.7, 0.3, 2, and 0.08 μg L −1 , respectively, and the relative standard deviations (RSDs) were all less than 4%. Compared with a commonly used single point discharge microplasma source, the analytical sensitivities of these seven elements were improved by 3−6-fold. Certified Reference Materials (CRMs) were successfully analyzed with this miniaturized spectrometer, which features low power, compactness, portability, and high detectability, and is thereby a great prospect in the field of elemental analytical chemistry.

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Section: Introductionmentioning

confidence: 99%

Array Point Discharge as Enhanced Tandem Excitation Source for Miniaturized Optical Emission Spectrometer

Zhang

Tang

et al. 2023

Anal. Chem.

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“…Eskina et al 75 reviewed (173 references) use of this instrumentation and included the analysis of waste and drinking waters amongst all applications considered. The HR scanning ability of this ETAAS instrumentation was exploited 76 to remove matrix interferences in the determination of Pb directly in seawater. A mixed Ba(NO 3 ) 2 –HF modifier suppressed the sulfate interference (by formation of refractory barium sulfate) and removed the chloride interference (by formation of volatile HCl), thereby allowing an LOD of 0.3 μg L −1 to be achieved.…”

Section: Water Analysismentioning

confidence: 99%

“…Selenium stable isotopes are regarded as having great potential as a tracer of redox processes and chemical cycling of chalcophiles and volatile elements. A procedure for the measurement of Se stable isotopes in samples with low Se contents employed 297 a novel76 Se-78 Se double-spike with HG-MC-ICP-MS detection. Sample requirement was typically 25 ng of natural Se and the sensitivity was >1 kV per 1000 mg L À1 for the total Se signal.…”

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confidence: 99%

Atomic spectrometry update – a review of advances in environmental analysis

Bacon

Butler

Cairns

et al. 2021

J. Anal. At. Spectrom.

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“…At present, most reports for Pb 2 + quantification are based on large and complex instruments, such as ultraviolet-visible (UV-Vis) spectrophotometry, [8] atomic absorption spectrometry (AAS), [9,10] and inductively coupled plasma-mass spectrometry (ICP-MS). [11] Regrettably, these methods are not sensitive enough for Pb 2 + detection at levels as low as ppb.…”

Section: Introductionmentioning

confidence: 99%

High Selective Detection of Trace Lead Ions via Substitution‐triggered Chemiluminescence Enhancement

Li,

Hou

2023

ChemistrySelect

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Lead ion (Pb2+) is a high‐hazardously heavy metal ion in surroundings that even ppb level can cause mental decline and behavioral difficulties especially in children. However, the recognition and detection of Pb2+ are still challenging. Here, a high selective and ultra‐sensitive chemiluminescence (CL) method was established based on the substitution mechanism between Pb2+ and the metal–organic framework – Cu‐MOF‐74. Pb2+ can specifically substitute Cu active sites in Cu‐MOF‐74 and released Cu sites, strongly amplifying the CL emission of the luminol‐hydrogen peroxide (H2O2) system. A linear response for Pb2+ detection in the range of 0.5–50 nM with a detection limit of 0.3 nM was realized. Moreover, the proposed method was successfully implemented on a paper‐based analytical device with favorable fabrication and operational features for Pb2+ determination in water samples. It offers a new strategy to design high selective and sensitive sensors for the heavy metal ions monitoring.

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Direct Determination of Lead in Sea Water by High-Resolution Atomic Absorption Spectroscopy Using a Mixed Modifier Barium Nitrate–Hydrofluoric Acid

Cited by 8 publications

References 10 publications

Array Point Discharge as Enhanced Tandem Excitation Source for Miniaturized Optical Emission Spectrometer

Array Point Discharge as Enhanced Tandem Excitation Source for Miniaturized Optical Emission Spectrometer

Atomic spectrometry update – a review of advances in environmental analysis

High Selective Detection of Trace Lead Ions via Substitution‐triggered Chemiluminescence Enhancement

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