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 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.

An on-line matrix separation and preconcentration procedure for ICP-OES determination of Cd, Co, Cu, Mn and Pb traces in Zr and Zr-Nb alloys using a cation-exchange resin microcolumn

2021 ◽  
Author(s):  
Masoud Aghahoseini ◽  
Gholamhassan Azimi ◽  
M. K. Amini
Keyword(s):  
Inductively Coupled Plasma ◽  
Cation Exchange Resin ◽  
Optical Emission ◽  
Emission Spectrometry ◽  
Icp Oes ◽  
Inductively Coupled ◽  
Separation And Preconcentration ◽  
On Line ◽  
Plasma Optical Emission Spectrometry

Determination of traces of Cd, Co, Cu, Mn and Pb elements in zirconium and its alloys by inductively coupled plasma optical emission spectrometry (ICP OES) suffers from severe spectral interferences...

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