Solid-Phase Extractive Preconcentration of Trace Copper as its Calmagite Anionic Chelate using a Polyaniline Column for Flame Atomic Absorption Spectrometric Determination

A new solid phase extraction method based on the application of polyaniline as the sorbent and calmagite as the anionic chelating agent is reported for selective preconcentration of trace copper, prior to its determination by microsample injection system-flame atomic absorption spectrometry. The parameters that influence the extraction and chelate formation were optimized. The copper was retained on a polyaniline minicolumn at pH 4.0 and eluted with 2.0 mL of 3.0 mol L−1 nitric acid. Under the optimum conditions, the limit of detection, the relative standard deviation, and the preconcentration factor were 1.98 µg L−1, less than 5.4%, and 50 to 200, respectively. The method was validated through the analysis of certified reference water samples and standard addition measurements. Quantitative recoveries between 93.4% and 103.5% were obtained. The method was successfully applied to the determination of copper in water. © 2015, Taylor & Francis Group, LLC

INVESTIGATION OF SOIL POLLUTION LEVELS FOR ZINC, COPPER, LEAD, NICKEL, CADMIUM AND MANGANESE AT AROUND OF CINKUR PLANT IN KAYSERI

Levels of some heavy metal pollutions in soils at around of a plant produced zinc, cadmium and lead metals were investigated. The contents of soils taken were compared with the metal contents in a soil collected from an area exposed to little or no contamination. The levels of examined metal pollution depend on directions and distances to the plant. A good correlation between the level of metal contaminant and wind blowing direction was also found.Levels of some heavy metal pollutions in soils at around of a plant produced zinc, cadmium and lead metals were investigated. The contents of soils taken were compared with the metal contents in a soil collected from an area exposed to little or no contamination. The levels of examined metal pollution depend on directions and distances to the plant. A good correlation between the level of metal contaminant and wind blowing direction was also found.</p

INVESTIGATION OF LEAD, NICKEL, CADMIUM AND ZINC POLLUTION OF TRAFFIC IN KAYSERI

Lead, nickel, cadmium and zinc pollutions originated from the traffic of city were investigated in our environment. A good correlation between the number of cars or total vehicle's number and the metal contents was found

Application of the HMDTC-HMA coprecipitation method for the enrichment and atomic absorption spectrometric determination of some trace metal ions in various samples

Applications of the hexamethylene-dithiocarbamic acid hexamethyleneammonium salt (HMDTC-HMA) coprecipitation method for the preconcentration and separation of lead (II), iron(III), cadmium(II), nickel(II), cobalt(II) and copper(II) ions in seawater samples, dialysis concentrates and some textile samples have been performed prior to their atomic absorption spectrometric determinations. The influences of the main components of the samples as matrix on the quantitative separation and preconcentration of analyte ions were investigated. The concentration of the metal ions detected after preconcentration was in agreement with the added amount. The relative standard deviations of the determinations are generally lower than 10%

Extractable Trace Metals Content of Dust from Vehicle Air Filters as Determined by Sequential Extraction and Flame Atomic Absorption Spectrometry

A modified four-step sequential extraction procedure developed within the Standards, Measurement, and Testing Program (formally the Community Bureau of Reference) of the European Commission was applied to determine the distribution of Cd, Cu, Fe, and Mn in air filter dust samples collected from vehicles. The four fractions were acid-soluble, reducible, oxidizable, and residual. These fractions have the advantage of providing better insight into the mechanism of association of metals in the dust. The determination of trace metals in dust samples was performed by flame atomic absorption spectrometry. The results obtained after applying the sequential extraction scheme indicated that Cu was the most abundant metal in the organic and residual fractions of the dust matrix. Fe was found mainly in the residual fraction, and the major amounts of Mn and Cd were present in the acid-soluble and bound-to-carbonate fraction. The mean values of Cd, Cu, Fe, and Mn were found to be 15.58, 33.54,1625, and 180 mu g/g, respectively. The results obtained are in agreement with data reported in the literature

Trace metal levels of river water samples from Gelingulu Dam, Karasu, Kanak Suyu and Delice River, Yozgat-Turkey

Nickel, lead. cadmium, copper, cobalt, manganese and iron contents of the river water samples from Gelingulu Dam, Karasu, Kanak Suyu and Delice River (Yozgat-Turkey) have been determined by flame and / or graphite furnace atomic absorption spectrometry after preconcentration by sorbing the metal / ammonium pyrrolydine dithiocarbamate (APDC) complexes on the activated carbon column. The concentration ranges of nickel, lead, cadmium, copper, manganese and iron were <1-5.0 mu g/l, 2.6-29.8 mu g/l, 2.2-9.4 mu g/l, 1.6-13.4 mu g/l, 13.8-47.2 mu g/l and 33.4-284.4 mu g/l, respectively. The contents of cobalt of all water samples were found to be less than 1 mu g/l. Trace metal concentrations in the river water samples from Yozgat-Turkey were found within the standard limits by the Water Pollution Control Regulation of Turkish Authorities

Determination of cobalt and copper in water, plant, and soil samples by magnetite nanoparticle-based solid-phase microextraction (SPME) coupled with microsample injection system-flame atomic absorption spectrometry (MIS-FAAS)

A magnetic solid-phase microextraction (SPME) procedure was optimized using Fe3O4 nanoparticles (NPs) to preconcentrate and determine cobalt and copper in real samples using microsample injection system-flame atomic absorption spectrometry (MIS-FAAS). Recoveries over 95% for Co(II) and 80% for Cu(II) from 90 mL of sample buffered to pH 4.0 were obtained using 50 mg Fe3O4 NPs as the adsorbent and 0.5 mL of 0.5 mol L-1 HNO3 as the eluent. The extraction time was 10 min. The preconcentration factors for Co(II) and Cu(II) were 180. The detection limits for Co(II) and Cu(II) were 1.2 and 0.9 mu g L-1, respectively. The relative uncertainties and relative standard deviations were lower than 5.3% and 2.4%, respectively. The developed method was verified by analyzing TMDW-500 drinking water, NIST 1573a Tomato leaves, and NCS DC 78302 Tibet soil as standard reference materials. The spiking experiments provided recoveries exceeding 95%. The method was applied to determine cobalt and copper in water, soil, tea infusion, and vegetable samples

Assessment of Heavy Metal Levels in Street Dust Samples from Denizli, Turkey, and Analysis by Flame Atomic Absorption Spectrometry

In this study, toxic heavy metal contamination in dust samples obtained from different streets in Denizli, Turkey, was monitored. The areas selected include heavy, moderate, and normal traffic flow, building construction sites and other industrial activities near roads, car parks, school gardens, health centers, and hospitals. The metals were determined by flame atomic absorption spectrometry. The concentration ranges were Cu at 20.4-147.4 mu g g(-1), Cr at 9.9-75.0 mu g g(-1), Ni at 22.8-86.2 mu g g(-1), Pb at 14.4-145.3 mu g g(-1), and Mn at 52.3-158.3 mu g g(-1). The Cd content for all dust samples was below 0.1 mu g g(-1). According to the geoaccumulation index (I-geo) classification, Cr and Mn were present at the lower level (0<I-geo <= 1) and Pb, Cu, and Ni at moderate level (1<I-geo <= 2). This is the fist time that the concentrations and the effect of heavy metals on the environment, in particular, in street dust of Denizli, Turkey, have been investigated

Coprecipitation of heavy metals with erbium hydroxide for their flame atomic absorption spectrometric determinations in environmental samples

Trace amounts of copper, manganese, cobalt, chromium, iron and lead were quantitatively coprecipitated with erbium hydroxide on 0.05 M NaOH medium. The coprecipitant could be easily dissolved with 1 M nitric acid. The presence of up to 15 g/l of erbium ions did not interfere with the atomic absorption spectrometric determination of analyte ions. The recovery values for analyte ions were higher than 95%. The concentration factor was 25-fold. Coprecipitation parameters including reagent amounts and matrix effects are discussed. The relative standard deviations of the determinations were below 9%. The time required for the coprecipitation was about 30 min. The proposed method was successfully applied for the determination of trace amounts of analyte ions in urine, soil and sediment, natural water samples. © 2005 Elsevier B.V. All rights reserved