Determination of trace amounts of copper, lead and zinc in cements by X-ray fluorescence spectrometry after precipitation separation with hexamethyleneammonium hexamethylenedithiocarbamate

Yamamoto, Yoshikazu; Nishino, Yasuhiro; Ueda, Kazuyuki

doi:10.1016/0039-9140(85)80165-x

Cited by 9 publications

(2 citation statements)

References 8 publications

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“…Currently, representative techniques for lead detection include colorimetric assay, atomic absorption spectrometry (AAS), atomic emission spectrometry (AES), electrochemistry methods, biosensors, nuclear magnet resonance, and mass spectrometry [24][25][26][27]. Inductively coupled plasma mass spectrometry (ICP-MS) has been widely used to detect lead in biological fluids, tissues, environmental samples, and oils [28][29][30][31][32][33][34][35].…”

Section: Introductionmentioning

confidence: 99%

Detection of trace levels of lead in aqueous liquids using extractive electrospray ionization tandem mass spectrometry

Liu

Zhang

Xiao

et al. 2012

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a b s t r a c tA sensitive approach, based on semi-quantitative measurement of the characteristic fragments in multistage extractive electrospray ionization mass spectrometry (EESI-MS n ), was developed for fast detection of trace levels of lead in aqueous liquids including mineral water, lake water, tap water, energy drinks, soft drinks, beer, orange juice, and tea. A disodium ethylene-diamine-tetraacetic acid (EDTA) aqueous solution was electrosprayed to produce negatively charged primary ions which then intersected the neutral sample plume to generate anions of EDTA-Pb(II) complexes. The charged EDTA-Pb(II) complexes were characterized with multistage collision induced dissociation (CID) experiments. The limit of detection (LOD) using EESI-MS 3 was estimated to be at the level of 10 -13 g/mL for directly detecting lead in many of these samples. The linear dynamic range was higher than 2 orders of magnitude. A single sample analysis could be completed within 2 min with reasonable semi-quantitative performance, e.g., relative standard deviations (RSDs) for deionized water were 4.6-7.6% during 5 experimental runs (each of them had 10 repeated measurements). Coca-cola and Huiyuan orange juice, representative beverage samples with complex matrices, generated recovery rates of 91.5% and 129%, respectively. Our experimental data demonstrated that EESI-MS is a useful tool for the fast detection of lead in various solutions, and EESI-MS showed promises for fast screening of lead-contaminated aqueous liquid samples.

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Section: Introductionmentioning

confidence: 99%

Detection of trace levels of lead in aqueous liquids using extractive electrospray ionization tandem mass spectrometry

Liu

Zhang

Xiao

et al. 2012

Talanta

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“…After this step, the complexes are eluted and inserted in HPLC systems, allowing separations and simultaneous quantifications. [47][48][49][50][51][52] They have also been employed in separation and co-precipitation [53][54][55][56][57][58][59][60] and in the less recent applications with solid [61][62][63][64] and liquid phase extractions [65][66][67][68][69][70][71][72][73][74][75] followed by determination by atomic spectroscopic techniques of several elements.…”

Section: Introductionmentioning

confidence: 99%

Thermoanalytical and solution stability studies of hexamethylenedithiocarbamates

Benedini¹,

Antunes²,

Cavalheiro³

et al. 2006

J. Braz. Chem. Soc.

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Estudos termogravimétricos e calorimétricos exploratórios diferenciais de hexametilenoditiocarbamatos de níquel(II), cobre(II), zinco(II) e cádmio(II) foram realizados sob atmosferas dinâmicas de ar e nitrogênio, para avaliar as etapas e os produtos de decomposição térmica. Esses produtos, quando cristalinos, foram caracterizados por difratometria de raios X, sendo predominantemente constituídos por sulfetos e óxidos metálicos sob N 2 e ar, respectivamente. Usando espectrofotometria na região do ultravioleta, também foram determinados o pK a = 3,6 ± 0,2 para o ácido hexametilenoditiocarbâmico em força iônica igual a 0,50 mol dm -3 (KCl) a 25,0 °C e os parâmetros cinéticos de decomposição em diferentes valores de pH (k lim = 2,21 × 10 -2 s -1 e t ½ lim = 156 s).Thermogravimetric and differential scanning calorimetric investigation of the thermal behavior of nickel(II), copper(II), zinc(II) and cadmium(II) hexamethylenedithiocarbamates were performed under nitrogen and air atmospheres in order to investigate the steps and products of thermal decomposition. When obtained in a crystalline form, the decomposition products were identified by their X-ray diffraction patterns. Metal sulfides and oxides were the major residues under nitrogen and air atmospheres, respectively. Spectrophotometric measurements in the ultraviolet region were used to estimate the pK a = 3.6 ± 0.2 for the haxamethylenedithiocarbamic acid at 0.50 mol dm -3 ionic strength (KCl) at 25.0 °C and the kinetic parameters of decomposition at different pH values (k lim = 2.21 × 10 -2 s -1 and t ½ lim = 156 s).

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RFA minimaler Probemassen

Kiessling¹

1989

Röntgenfluoreszenzanalyse

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Determination of trace amounts of copper, lead and zinc in cements by X-ray fluorescence spectrometry after precipitation separation with hexamethyleneammonium hexamethylenedithiocarbamate

Cited by 9 publications

References 8 publications

Detection of trace levels of lead in aqueous liquids using extractive electrospray ionization tandem mass spectrometry

Detection of trace levels of lead in aqueous liquids using extractive electrospray ionization tandem mass spectrometry

Thermoanalytical and solution stability studies of hexamethylenedithiocarbamates

RFA minimaler Probemassen

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