Showing papers in "Microchemical Journal in 2000"
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TL;DR: A review of field analytical chemistry (FAC) techniques can be found in this paper, with particular focus upon two techniques: laser-induced breakdown spectroscopy (LIBS) and tungsten coil atomic absorption spectrometry (W Coil AAS).
106 citations
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TL;DR: The main active components of present-day car catalysts are the noble metals Pt, Pd and Rh, belonging to the platinum group elements (PGEs), which are being spread into the environment to an as-yet incompletely known extent, mainly due to surface abrasion of the catalyst during car operation as discussed by the authors.
99 citations
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TL;DR: In this paper, the most significant results obtained from the characterization of protein and lipid binders in a broad range of reference paint materials prepared and stored at Opificio delle Pietre Dure in Florence were compared with those relevant to old paintings of different ages, and showed that UV light aging does not significantly affect the amino acid profile of protein binders.
94 citations
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TL;DR: The recent work aimed to establish reliable reference values for the content of Cd, Pb and Sb in the liver of pediatric subjects.
82 citations
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TL;DR: In this article, an analytical procedure based on gas chromatography separation and mass spectrometric identification is presented, which allows the determination of natural resins, waxes and lipids in the same micro sample.
76 citations
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TL;DR: A monitoring system has been developed to characterize the water quality of Lake Balaton and its catchment area as discussed by the authors, where a modified four-step sequential leaching procedure was applied for determination of the distribution of elements.
76 citations
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TL;DR: Microwave (MW) sample preparation has become a standard analytical tool as discussed by the authors, and a large section of MW systems, such as open vessel and low to high pressure closed vessel device, are used.
67 citations
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TL;DR: In this article, a modified spectrophotometric method was developed for the determination of phenol in water, based on the reaction between phenol, sodium nitroprusside and hydroxylamine hydrochloride in a buffer medium of pH 10.6-11.8.
65 citations
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TL;DR: In this paper, a strong anionic exchange column (SAX) loaded with disodium ethylendiaminetetraacetic acid (Na2EDTA) was used to trap both vanadium species dissolved in 10−100 ml of water at pH 3.
63 citations
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TL;DR: In this paper, the homocysteine monolayer (Hcy/Au) was demonstrated to catalyze the electrochemical response of dopamine (DA) by cyclic voltammetry and the calculated standard rate constant (k s ) is 21×10 −2 cm/s at the self-assembled electrode.
62 citations
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TL;DR: The mechanism employed by Larrea tridentata (Creosote bush) to uptake and simultaneously defend against the presence of excess copper has been investigated in this article, showing that creosote takes up or adsorbs copper from the soil in the Cu(II) oxidation state and transports it to the leaves.
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TL;DR: In this article, the authors used ICP-MS and GC-MS to analyze attic dust for 17 trace elements (Li, V, Cr, Mn, Co, Cu, Zn, Ga, As, Rb, Sr, Cd, Cs, Ba, Pb, Sn, Sb) and found that lead was highly correlated with the age of the house (R 2 = 0.87, n = 8).
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TL;DR: The airborne platinum concentrations were from samplings in the public transport system of the city of Munich during regular rides from 1993 to 1996 as mentioned in this paper, and an increase of airborne platinum concentration was detectable.
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TL;DR: In this article, a high performance liquid chromatography inductively coupled plasma mass spectrometry (HPLC-ICP-MS) system for speciation of arsenite, arsenate, monomethyl arsonic acid (MMAA), dimethyl arsenic acid (DMAA) and arsenobetaine (AB) in urine samples has been developed.
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TL;DR: In this paper, the authors evaluated human exposure to aldehydes in five urban locations and one rural industrial location in the north-west area of Milan in winter 1999 and in summer 1998-99.
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TL;DR: In this paper, the 1,2,4-triazine pesticides, metamitron [4-amino-3-methyl-6-phenyl-1, 2, 4-triazin-5(4H)-one] and metribuzin [4amino-, 3-methylthio-6-,tert-butyl]-one] are adsorbed on lignin and the adsorption can be followed by measuring polarographically the concentration of the free pesticide in a slurry.
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TL;DR: In this article, a high preconcentration method by liquid-liquid extraction using liquid surfactant membranes was developed, which achieved a concentration factor of 570, 820, 750, 970, 860, and 880 for chromium(III), manganese(II), cobalt, nickel, copper, and cadmium, respectively.
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TL;DR: In this paper, the levels of rare earth elements (REEs) were determined in two environmental matrices which are being certified as Reference Materials: CRM 600-Calcareous Soil and CRM 667-Estuarine Sediment, issued by the EU Standards, Measurement and Testing Programme.
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TL;DR: In this paper, a procedure for determination of trace amounts of cadmium with on-line preconcentration has been proposed, which is based on chemical sorption of Cadmium(II) ions onto a minicolumn packed with Amberlite XAD-2 resin loaded with TAM reagent.
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TL;DR: In this paper, a rapid flotation method for cobalt and copper separation and enrichment from fresh waters is established, using sodium dodecylsulfate as a foaming reagent, using 10 mg Fe(III and 3×10−4 mol hexamethylenedithiocarbamate (HMDTC−) added to 1 l of aqueous solution.
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TL;DR: In this paper, a polymeric membrane based on nitrogen containing calixarene derivatives was used as an indicator electrode in titrations of Ag+ with Cl− ions, which achieved a good Nernstian response of 49 −53 mV decade−1 for silver in the activity range 5×10−6 −5×10 −2 M, the limit of detection reached 10−5.6 M and exhibited high selectivity towards alkali, alkaline earth and transition metal ions.
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TL;DR: In this article, the authors used a conventional three-electrode cell and the ammonia-ammonium chloride buffer (pH 9.4) as the supporting electrolyte.
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TL;DR: In this paper, an adsorptive stripping voltammetric method for the determination of the antibiotic erythromycin at an electrochemically pretreated glassy carbon electrode has been developed.
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TL;DR: In this paper, the chemical speciation of trace elements of environmental, toxicological, clinical and nutritional interest was undertaken in breast milk, with the goal of ascertaining the chemical forms of Ba, Bi, Cd, Cu, Li, Mg, Mn, Mo, Pb, Sr, Tl and Zn.
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TL;DR: In this paper, a pilot study was undertaken to assess the possibility of producing a certified reference material (CRM) for trace elements in a matrix of honey, the elements considered were As, Cd, Cr, Cu, Fe, Mn, Ni, Pb, Sn, V and Zn.
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TL;DR: In this article, a preliminary study was undertaken to assess the risk posed to the environment and health of residents by trace elements released by fuel combustion in the thermoelectric power plant of Pian de’ Gangani (Montalto di Castro, Latium, Italy).
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TL;DR: Ru(bpy)33+-based chemiluminescence detection of underivatized amino acids was coupled to capillary electrophoresis and evaluated as a separation and detection methodology for the compositional analysis of peptides and proteins.
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TL;DR: In this paper, a series of transition metal(II) complexes, such as 1,2-bis(naphthylideneimino)ethane [M(II)(NAPET), 1,3-bis (naphTHylidenesinimino)-propane [NAPPR] and 1,4-bis-naphthyroididene-imino-butane (NAPBU), were synthesized for the reduction of thionyl chloride.
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TL;DR: In this article, an investigation was carried out to monitor through hair analysis the occupational exposure of goldsmith workers to potentially toxic elements, another study was performed to extend the same methodological approach to the goldsmiths of Rome.
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TL;DR: The relatively recent introduction of atomic absorption spectrometry (ABS) has produced a rapid and relatively inexpensive method for the determination of metal concentrations in a wide variety of samples.