Mobility, binding behavior and potential risks of trace metals in the sediments of the fifth largest freshwater lake, China

2013 ◽  
Vol 67 (11) ◽  
pp. 2503-2510 ◽  
Author(s):  
Guolian Li ◽  
Guijian Liu ◽  
Chuncai Zhou ◽  
Yu Kang ◽  
Wanqing Yuan ◽  
...  
Keyword(s):  
Trace Metals ◽  
Trace Metal ◽  
Inductively Coupled Plasma ◽  
Optical Emission ◽  
Spatial Diversity ◽  
Emission Spectrometry ◽  
Chaohu Lake ◽  
Eutrophic Lakes ◽  
Binding Behavior ◽  
Potential Risks

The trace metal pollution of sediments in Chaohu Lake, one of the most highly eutrophic lakes in East China, was investigated. Surface sediment (0–5 cm) samples were collected from 35 different positions and analyzed by inductively coupled plasma optical emission spectrometry to determine trace metal contents. Results showed that the mean content of trace metals was as follows: Cr, 85.09 mg kg−1; Cu, 34.49 mg kg−1; Ni, 26.46 mg kg−1; Pb, 34.17 mg kg−1 and Zn, 107.46 mg kg−1. The trace metal concentrations from different sampling sites displayed spatial diversity; the heavily polluted sampling sites were close to where estuaries flow in to the lake. A four-step sequential extraction was used to examine the partitioning of the trace metals. Results demonstrated that the percentage of the species bound to the oxidizable phase for all trace metals ranged from 15.6 to 37.7%, while for Cu, Cr and Ni, the main forms were residual (41.3, 62.3 and 69.8%, respectively). Trace metals in the oxidizable fraction may mainly exist in the form of sulfides. The ecological potential risks of trace metals decreased as follows: Pb > Zn > Cu > Cr > Ni.

Preparation of Urine Samples for Trace Metal Determination: A Study with Aluminium Analysis by Inductively Coupled Plasma Optical Emission Spectrometry

1998 ◽  
Vol 35 (2) ◽  
pp. 245-253 ◽  
Author(s):  
T J Burden ◽  
M W Whitehead ◽  
R P H Thompson ◽  
J J Powell
Keyword(s):  
Trace Metals ◽  
Trace Metal ◽  
Inductively Coupled Plasma ◽  
Optical Emission ◽  
Urine Samples ◽  
Emission Spectrometry ◽  
Individual Sample ◽  
Inductively Coupled ◽  
Plasma Optical Emission Spectrometry ◽  
Pooled Sample

Urinary analysis of trace metals forms a significant role in clinical chemistry, but the optimal preparation and analysis of urine samples has not been investigated. Human urine is generally supersaturated with dissolved solids. Therefore, samples often precipitate following collection. X-ray microanalysis showed that this precipitate was predominantly rich in calcium and phosphorus but could include some trace metals from urine, potentially lowering their concentrations in solution. Hence, the precipitate must be fully redissolved for accurate analysis of trace metals in urine. Methods are emphasized for the best collection and preparation of urine samples for subsequent trace metal analysis; in this work inductively coupled plasma optical emission spectrometry (ICPOES) was used for the analysis of aluminium. For optimal accuracy, peak profiles were collected over 396.147 nm-396.157 nm. Urinary aluminium levels were investigated from 10 healthy volunteers and concentrations were obtained using either aqueous, pooled or individual urine-based standard curves. Since urine has a highly variable matrix, individual sample-based standards, which are unique to that particular sample, gave the most accurate results. However, where sample size is small or sample numbers are unfeasibly large, pooled sample-based standards give good approximations to within 15% and, with appropriate validation, other elements as internal standards could also be used for approximations. Aqueous standards should be avoided. Spike-recovery experiments confirmed these data since individual sample based standards showed optimal recovery [99.3 (4.4)%], while pooled sample-based standards were a close proxy [101.6 (9.2)%] but aqueous standards were inappropriate [137.4 (12.8)%]. Postprandial urinary aluminium levels of the 10 volunteers were [7.2 (3.7)μg/L] after analysis using individual sample-based standard curves.

scholarly journals Magnetic Fe3O4@Mg/Al-layered double hydroxide adsorbent for preconcentration of trace metals in water matrices

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Luthando Nyaba ◽  
Tshimangadzo S. Munonde ◽  
Anele Mpupa ◽  
Philiswa Nosizo Nomngongo
Keyword(s):  
Trace Metals ◽  
Layered Double Hydroxide ◽  
Inductively Coupled Plasma ◽  
Optical Emission ◽  
Environmental Water ◽  
Emission Spectrometry ◽  
Inductively Coupled ◽  
Relative Standard ◽  
Adsorption Surface ◽  
Double Hydroxide

AbstractA magnetic Fe3O4@MgAl-layered double hydroxide (MLDH) nanocomposite was successfully synthesized and applied as an effective adsorbent for preconcentration of trace As(III), Cd(II), Cr(III), Co(II), Ni(II), and Pb(II) ions from complex matrices. The quantification of the analytes was achieved using the inductively coupled plasma optical emission spectrometry (ICP-OES) technique. The nanocomposite was then characterized using BET, FTIR, SEM, and EDS. Due to its high adsorption surface area, compared to traditional metal oxide-based adsorbents, MLDH nanocomposite exhibited high extraction efficiency. Several experimental parameters controlling the preconcentration of the trace metals were optimized using response surface methodology based on central composite design. Under optimum conditions, the linearity ranged from 0.1 to 500 µg L−1 and the correlation of coefficients (R2) were higher than 0.999. The limits of detection (LODs) and quantification (LOQs) were 0.11–0.22 µg L−1 and 0.35–0.73 µg L−1, respectively. The intra-day (n = 10) and inter-day precisions (n = 5 working days) expressed in the form of percent relative standard deviations (%RSDs) were below 5%. The proposed method was successfully applied for the analysis of the As(III), Cd(II), Cr(III), Co(II), Ni(II), and Pb(II) ions in different environmental water samples.

scholarly journals Determination of Trace Metals in Urine by Direct Dilution Inductively Coupled Plasma Optical Emission Spectrometry

Epidemiology ◽  
2008 ◽  
Vol 19 (1) ◽  
pp. S226
Author(s):  
D Meza-Figueroa ◽  
M Cebrian ◽  
L López-Carrillo ◽  
P Ostrosky-Wegman ◽  
L Torres-Sánchez ◽  
...  
Keyword(s):  
Trace Metals ◽  
Inductively Coupled Plasma ◽  
Optical Emission ◽  
Optical Emission Spectrometry ◽  
Emission Spectrometry ◽  
Inductively Coupled ◽  
Plasma Optical Emission Spectrometry

scholarly journals Determination of Heavy and Trace Metals in Honey Using Inductively Coupled Plasma Optical Emission Spectroscopy (ICP-OES) in South Eastern Zone of Tigray Region, Northern Ethiopia

2021 ◽  
Vol 10 (2) ◽  
pp. 113-122
Author(s):  
Kusse Gudishe Goroya ◽  
◽  
Gebrewahd Abadi ◽  
Yoseph Alresawum Asresahegn ◽  
◽  
...  
Keyword(s):  
Trace Metals ◽  
Inductively Coupled Plasma ◽  
Optical Emission ◽  
Emission Spectrometry ◽  
Northern Ethiopia ◽  
Icp Oes ◽  
Inductively Coupled ◽  
Tigray Region ◽  
Eastern Zone ◽  
Plasma Optical Emission Spectrometry

The present study aimed to determine concentration of heavy and trace metals (Fe, Cu, Mn, Zn, Co, Cd, Pb, As, and Hg) in honey by inductively coupled plasma optical emission spectrometry (ICP-OES). Samples passed through wet digestion methods following the optimum digestion condition by applying the reagents (30mL HNO3:30mL H2O2) at temperature of 270°C for 3 hours. The average concentrations of the metals are found in the range of 5.32-28.6 mg/kg for Fe, 0.24-0.749mg/kg for Cu, 0.627-4.401mg/kg Zn, 0.41-3.15mg/kg for Mn, 0.08-0.112 mg/kg for Co, 0.25-0.325mg/kg for Pb, 0.24-0.46mg/kg for As, ND-0.031mg/kg for Hg and 0.02-0.03mg/kg for Cd. This study shows that the honey in the studied area is a good sources of essential metals (Fe, Cu, Mn, Co and Zn) as they are found to be in the permissible limit. Moreover, the maximum concentration of the toxic metals determined in this work are below the level of toxicity as per the standard set by WHO/FAO.

scholarly journals Estimation of Some Trace Metals Contamination in Waste Newspapers

2021 ◽  
Author(s):  
Hatem Ahmed ◽  
Ahmed Johar ◽  
Muhammad Janjua ◽  
Nada Alhafez
Keyword(s):  
Hydrogen Peroxide ◽  
Trace Metals ◽  
Inductively Coupled Plasma ◽  
Optical Emission ◽  
Emission Spectrometry ◽  
Consumer Health ◽  
Average Content ◽  
Icp Oes ◽  
Inductively Coupled ◽  
Different Types

Abstract In the current study, different types of waste newspapers in the Middle East and Asia were analyzed qualitatively and quantitatively by Inductively Coupled Plasma and Optical Emission Spectrometry (ICP OES) for trace metals contamination. 11 samples from different newspapers collected by the researchers from local markets were analyzed for arsenic (As), cadmium (Cd), chromium (Cr), nickel (Ni), lead (Pb), aluminum (Al), and zinc (Zn). Trace metals concentrations in the samples were compared with those established by the various specialized councils. Digestion solution for samples digested in this study included 10 ml of 69% nitric acid and 2 ml of 30% hydrogen peroxide. Based on the results for light fonts, the average content of As, Cd, Cr, Ni, and Pb was (2.8, 1.5, 6.9, 5.6, and 5.0 µgL-1), while was (3.4 and 0.18 mgL-1) for Al, and Zn, respectively. In bold fonts, the content of As, Cd, Cr, Ni, and Pb was (4.9, 2.4, 9.1, 7.9, and 7.0 µgL-1, respectively), while Al and Zn were (5.7 mg/l and 0.32 mgL-1) respectively. In the pictures, the levels of As, Cd, Cr, Ni, and Pb were (6.1, 2.99, 11.2, 9.4, and 8.99 µgL-1), while Al and Zn were (8.2, and 0.39 mgL-1), respectively. The results showed that all levels of trace metals under study were within the specialized global councils' permitted limits, but the presence of trace metals in waste newspapers, even within the permitted limits, remains a source of great concern, as exposure to these elements has a significant impact on consumer health.

scholarly journals Functionalized Glutathione on Chitosan-Genipin Cross-Linked Beads Used for the Removal of Trace Metals from Water

2020 ◽  
Vol 2020 ◽  
pp. 1-14
Author(s):  
Samira R. Akaji ◽  
David Dewez
Keyword(s):  
Aqueous Solution ◽  
Trace Metals ◽  
Adsorption Capacity ◽  
Inductively Coupled Plasma ◽  
Optical Emission ◽  
Emission Spectrometry ◽  
Adsorption Reaction ◽  
Inductively Coupled ◽  
Elementary Analysis ◽  
Optimal Ph

Functionalized glutathione on chitosan-genipin cross-linked beads (CS-GG) was synthesized and tested as an adsorbent for the removal of Fe(II) and Cu(II) from aqueous solution. The beads were characterized by several techniques, including Fourier-transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), CNS elementary analysis, scanning electron microscopy (SEM), and atomic force microscopy (AFM). The effect of several parameters such as the pH, the temperature, and the contact time was tested to optimize the condition for the adsorption reaction. The beads were incubated in aqueous solutions contaminated with different concentrations of Fe(II) and Cu(II) (under the range concentration from 10 to 400 mg·L−1), and the adsorption capacity was evaluated by inductively coupled plasma optical emission spectrometry (ICP-OES). The adsorption equilibrium was reached after 120 min of incubation under optimal pH 5 for Fe(II) and after 180 min under optimal pH 6 for Cu(II). According to the Langmuir isotherm, the maximum adsorption capacities (qmax) for Fe(II) and Cu(II) were 208 mg·g−1 and 217 mg·g−1, respectively. Our results showed that the adsorption efficiency of both metals on CS-GG beads was correlated with the degree of temperature. In addition, the adsorption reaction was spontaneous and endothermic, indicated by the positive values of ΔG0 and ΔH0. Therefore, the present study demonstrated that the new synthesized CS-GG beads had a strong adsorption capacity for Fe(II) and Cu(II) and were efficient to remove these trace metals from aqueous solution.

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