The determination of lead by MD-HG-AFS in APMP-QM-P3 comparison

Lu, Xiaocheng; Lü, H. J.; Ma, Lei; Cui, Yanjie

doi:10.1007/s00769-006-0099-7

Cited by 3 publications

(3 citation statements)

References 2 publications

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“…At a similar precision level, a comparison of the detection limit of the present procedure with the reported one [ 26 ] (8 ngl −1 ) based on hydride generation protocol with detection by AFS has shown that the detection limit of the present protocol (3.1 ngl −1 ) is superior to the published procedures. Namely, the method of this paper was much improved with respect to the HG-AFS-based procedures.…”

Section: Resultssupporting

confidence: 50%

“…For the sake of improving the performance of the procedure, special attention is given to the design of FI manifolds. The detection limit of this procedure is comparable or even superior to those obtained with detection by HG-ICPMS [10, 23, 24] or HG-ETAAS [25], while a significant improvement was achieved as compared with the published FI-HG-AFS procedures [26]. The proposed method, which is convenient, low cost, and sensitive, was successfully applied to the analysis of environmental samples, and its accuracy was tested by the analysis of certified reference materials.…”

Section: Introductionmentioning

confidence: 95%

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Trace Lead Measurement andOnlineRemoval of Matrix Interference in Geosamples by Ion‐Exchange Coupled with Flow Injection and Hydride Generation Atomic FluorescenceSpectrometry

Tan

Huang

2009

Journal of Analytical Methods in Chemistry

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A flow injection method has been developed for the direct determination of free available Pb(II). The method is based on the chemical sorption of Pb(II), from pH7 solutions, on a column packed of chelating resin. The retained complex was afterwards eluted with hydrochloric acid followed by hydride generation with reduction by tetrahydroborate. The preconcentration system proposed in this paper allows the elimination of great part of the saline content in the sample. A thorough scrutiny was made for chemical variables and FI parameters. With a sampling volume of 10.5 mL, quantitative retention of Pb (II) was obtained, along with an enrichment factor of 40 and a sampling frequency of 15 h−1. The detection limit, defined as 3 times the blank standard deviation (3σ), was 0.0031 ngml−1. The precision was characterized by an RSD value of 3.78% (at the 4 ng·ml−1 level, n = 11). The developed method has been applied to the determination of trace Pb in three standard reference materials. Accuracy was assessed through comparing the results with the accepted values.

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Section: Resultssupporting

confidence: 50%

Section: Introductionmentioning

confidence: 95%

Trace Lead Measurement andOnlineRemoval of Matrix Interference in Geosamples by Ion‐Exchange Coupled with Flow Injection and Hydride Generation Atomic FluorescenceSpectrometry

Tan

Huang

2009

Journal of Analytical Methods in Chemistry

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“…In recent years, interest in the determination of lead has been increased, particularly in biological, food and environmental sample matrices [1][2][3][4]. Lead has been extensively studied due to its high toxicity and bioaccumulation effect in organisms, since it is present in the trophic chain even at very low concentrations [5].…”

Section: Introductionmentioning

confidence: 99%

Determination of lead in complex sample matrices by atomic fluorescence spectrometry: optimisation of online hydride generation

Beltrán

Leal

Ferrer

et al. 2015

International Journal of Environmental Analytical Chemistry

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Lead hydride or plumbane (PbH 4 ) generation was optimised by exploiting a simple flow-injection method coupled to atomic fluorescence spectrometry (HG-AFS), and allowing ultra-trace lead determination. Plumbane was generated through two methods: (1) 5% (v/v) H 2 O 2 was employed as oxidant with 1.5% (m/v) KBH 4 as a reducing agent and 1.5% (v/v) HCl solution; (2) with 1.5% (m/v) K 3 [Fe(CN) 6 ] as an oxidant/sensitiser, 1% (m/v) KBH 4 as a reducing agent and 1.5% (v/v) HCl. Variables such as reagent concentrations, flow rates and sample and reagent volumes were tested and critically compared. The best results were obtained with potassium ferricyanide K 3 [Fe(CN) 6 ], achieving a detection limit of 0.03 μg Pb L −1 and a relative standard deviation (RSD) of 1.1%. The selected method was validated by analysis of certified reference materials such as SRM-2976 (mussel tissue) and BCR-610 (groundwater), with good agreement with the certified values. The developed methodology was successfully applied to different environmental sample matrices, such as rain water, tap water, ground water, spring water and drinking water, and biological samples, i.e., human blood, plasma and serum.

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Determination of lead in wine by hydride generation atomic fluorescence spectrometry in the presence of hexacyanoferrate(III)

et al. 2007

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A rapid, accurate, and precise method is described for the determination of Pb in wine using continuous-flow hydride generation atomic fluorescence spectrometry (CF-HGAFS). Sample pretreatment consists of ten-fold dilution of wine followed by direct plumbane generation in the presence of 0.1 mol L(-1) HCl and 1% m/v K(3)[Fe(CN)(6)] with 1% m/v NaBH(4) as reducing agent. An aqueous standard calibration curve is recommended for Pb quantification in wine sample. The method provides a limit of detection and a limit of quantification of 0.3 microg L(-1) and 1 microg L(-1), respectively. The relative standard deviation varies between 2-6% (within-run) and 4-11% (between-run) at 3-30 microg L(-1) Pb levels in wine. Good agreement has been demonstrated between results obtained by CF-HGAFS and direct electrothermal atomic absorption spectrometry in analyses of red and white wines within the concentration range of 9.2-25.8 microg L(-1) Pb.

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The determination of lead by MD-HG-AFS in APMP-QM-P3 comparison

Cited by 3 publications

References 2 publications

Trace Lead Measurement andOnlineRemoval of Matrix Interference in Geosamples by Ion‐Exchange Coupled with Flow Injection and Hydride Generation Atomic FluorescenceSpectrometry

Trace Lead Measurement andOnlineRemoval of Matrix Interference in Geosamples by Ion‐Exchange Coupled with Flow Injection and Hydride Generation Atomic FluorescenceSpectrometry

Determination of lead in complex sample matrices by atomic fluorescence spectrometry: optimisation of online hydride generation

Determination of lead in wine by hydride generation atomic fluorescence spectrometry in the presence of hexacyanoferrate(III)

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