Validation of an analytical method based on the high-resolution continuum source flame atomic absorption spectrometry for the fast-sequential determination of several hazardous/priority hazardous metals in soil

Frențiu, Tiberiu; Ponta, Michaela; Haţegan, Raluca

doi:10.1186/1752-153x-7-43

Cited by 12 publications

(6 citation statements)

References 58 publications

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“…The LOD of each element was calculated as the HMs concentration that corresponds to 3 times the standard deviation of ten independent measurements of the blank, divided by the slope of the calibration curve. The LOQ was calculated as 3 times the LOD [31,32]. The U was estimated by a bottom-up approach, systematically evaluating all the uncertainty sources from calibration certificates and from statistical analysis of repeated measurements.…”

Section: Methods Performance and Quality Controlmentioning

confidence: 99%

Accumulation of Heavy Metals in Plantago Major Grown in Urban and Post-Industrial Areas

Levei¹,

Kovács²,

Hoaghia³

et al. 2018

Studia UBB Chemia

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The enrichment and accumulation of heavy metals (Cu, Pb, Zn, Cd, Cr, Ni) in Plantago major leafs was comparatively studied in an urban (Cluj-Napoca) and a post-industrial area (Baia-Mare) from Romania. These two sites were selected for study as in Cluj-Napoca the dominant metal pollution sources are related to traffic, urban runoff, residential heating and municipal landfill, while in Baia-Mare the main pollution sources are the former ore processing activities and the remaining metal rich mining wastes. The average concentrations of Zn and Pb were higher in the soils collected from the postindustrial area, while the Cr and Ni in those from the urban area. The Cu, Cd, Cr and Ni in plantain leafs were comparable in both areas, while Pb and Zn were higher in the post-industrial area. Based on the enrichment factor and the metal accumulation index, plantain was found to be tolerant to high metal contents and moderate accumulator of Cu and Zn.

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Section: Methods Performance and Quality Controlmentioning

confidence: 99%

Accumulation of Heavy Metals in Plantago Major Grown in Urban and Post-Industrial Areas

Levei¹,

Kovács²,

Hoaghia³

et al. 2018

Studia UBB Chemia

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“…Raposo et al [24] evaluated the side pixel registration approach and the use of alternate lines of Fe for sequential determination of Cu, Fe, Mn, and Zn in soil extracts (diethylenetriaminepentaacetic acid extracting solution). Frentiu et al [25] performed the seque ntial determination of Ag, Cd, Co, Cr, Cu, Ni, Pb, and Zn in soil after microwave digestion in aqua regia.…”

mentioning

confidence: 99%

Use of High-Resolution Continuum Source Flame Atomic Absorption Spectrometry (HR-CS FAAS) for Sequential Multi-Element Determination of Metals in Seawater and Wastewater Samples

et al. 2015

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The objective of this work is to develop a method for the determination of metals in saline matrices using highresolution continuum source fl ame atomic absorption spectrometry (HR-CS FAAS). Module SFS 6 for sample injection was used in the manual mode, and fl ame operating conditions were selected. The main absorption lines were used for all the elements, and the number of selected analytical pixels were 5 (CP±2) for Cd, Cu, Fe, Ni, Pb and Zn, and 3 pixels for Mn (CP±1). Samples were acidifi ed (0.5% (v/v) nitric acid), and the standard addition method was used for the sequential determination of the analytes in diluted samples (1:2). The method showed good precision (RSD(%) < 4%, except for Pb (6.5%)) and good recoveries. Accuracy was checked after the analysis of an SPS-WW2 wastewater reference material diluted with synthetic seawater (dilution 1:2), showing a good agreement between certifi ed and experimental results. Keywords: high-resolution continuum source atomic absorption spectrometry, determination of metals in saline matrices, water analysis, multi-element sequential analysis, SPS-WW2.Introduction. One of the most obvious advantages of high-resolution continuum source atomic absorption spectrometry (HR-CS AAS) is the use of a single continuum source (a xenon short-arc lamp) for sequential multi-element analysis in the entire spectral range (190-900 nm) [1]. The increased signal-to-noise ratio due to the high intensity of the radiation source brings about an improvement of the photometric precision and the detection limits. Many secondary lines can also be used for analytical purposes, and elements (nonmetals: P, S, halogens, and some metalloids) [2, 3] for which no radiation source has been available may be determined [4]. When using fl ame at omizers, steady-state signals are obtained; moreover, wavelengths and fl ame conditions can be changed quickly; thus, it is possible to perform multi-element determination under optimum conditions in a single run [5]. At the same time, t he main advantage of HR-CS AAS using graphite furnaces is the direct analysis of complex samples [6]. All these instruments combine the use of the continuum source, a highresolution Echelle monochromator, and a charge coupled detector (CCD). The absorbance depends not only on the absorption coeffi cient, the length of the absorbing layer, and the number of absorbing atoms but also on the spectral interval over which the signal is recorded [7]. The spectral environment of the analytical line becomes available, and background correction and elimination of interferences in complex matrices is easier than using a line source [8]. Reference spectra, e.g., of a molecular absorption with rotational fi ne structure can be recorded and subtracted.Flame HRCSAAS (HR-CS FAAS) has been used for multi-element determination in different types of matrices. It has been used for the analysis of food and beverages (e.g., mineral waters [9], coffee samples [10], Brazilian wines [11]). Harmanescu et al. [12] determined the concentrations of Na, K,...

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“…After the evaporation of acid, the samples were diluted to 10 mL with ultrapure water. A high‐resolution continuum source atomic absorption spectrometer (contrAA700) was used as an instrumental detection system with a Xenon short‐arc lamp and air/acetylene burner head 18,19 . The wavelength used for Mn was 279.5 nm.…”

Section: Methodsmentioning

confidence: 99%

CYP1B1 affects the integrity of the blood–brain barrier and oxidative stress in the striatum: An investigation of manganese‐induced neurotoxicity

Wu,

Li,

Tian

et al. 2024

CNS Neurosci Ther

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AimsExcessive influx of manganese (Mn) into the brain across the blood–brain barrier induces neurodegeneration. CYP1B1 is involved in the metabolism of arachidonic acid (AA) that affects vascular homeostasis. We aimed to investigate the effect of brain CYP1B1 on Mn‐induced neurotoxicity.MethodBrain Mn concentrations and α‐synuclein accumulation were measured in wild‐type and CYP1B1 knockout mice treated with MnCl2 (30 mg/kg) and biotin (0.2 g/kg) for 21 continuous days. Tight junctions and oxidative stress were analyzed in hCMEC/D3 and SH‐SY5Y cells after the treatment with MnCl2 (200 μM) and CYP1B1‐derived AA metabolites (HETEs and EETs).ResultsMn exposure inhibited brain CYP1B1, and CYP1B1 deficiency increased brain Mn concentrations and accelerated α‐synuclein deposition in the striatum. CYP1B1 deficiency disrupted the integrity of the blood–brain barrier (BBB) and increased the ratio of 3, 4‐dihydroxyphenylacetic acid (DOPAC) to dopamine in the striatum. HETEs attenuated Mn‐induced inhibition of tight junctions by activating PPARγ in endothelial cells. Additionally, EETs attenuated Mn‐induced up‐regulation of the KLF/MAO‐B axis and down‐regulation of NRF2 in neuronal cells. Biotin up‐regulated brain CYP1B1 and reduced Mn‐induced neurotoxicity in mice.ConclusionsBrain CYP1B1 plays a critical role in both cerebrovascular and dopamine homeostasis, which might serve as a novel therapeutic target for the prevention of Mn‐induced neurotoxicity.

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Validation of an analytical method based on the high-resolution continuum source flame atomic absorption spectrometry for the fast-sequential determination of several hazardous/priority hazardous metals in soil

Cited by 12 publications

References 58 publications

Accumulation of Heavy Metals in Plantago Major Grown in Urban and Post-Industrial Areas

Accumulation of Heavy Metals in Plantago Major Grown in Urban and Post-Industrial Areas

Use of High-Resolution Continuum Source Flame Atomic Absorption Spectrometry (HR-CS FAAS) for Sequential Multi-Element Determination of Metals in Seawater and Wastewater Samples

CYP1B1 affects the integrity of the blood–brain barrier and oxidative stress in the striatum: An investigation of manganese‐induced neurotoxicity

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