scholarly journals Comparative Study on Minerals in Peel and Pulp of Peach (Prunus persica L.) Fruit

2019 ◽  
Vol 70 (6) ◽  
pp. 2282-2286
Author(s):  
Snezana Mitic ◽  
Branka Stojanovic ◽  
Snezana Tosic ◽  
Aleksandra Pavlovic ◽  
Danijela Kostic ◽  
...  
Keyword(s):  
Comparative Study ◽  
Analysis Of Variance ◽  
Inductively Coupled Plasma ◽  
Prunus Persica ◽  
Optical Emission ◽  
Peach Fruit ◽  
Inductively Coupled ◽  
Different Types ◽  
Post Hoc

In this study, variations of minerals contents between peel and pulp parts of six different peach varieties originated from Serbia were investigated by using inductively coupled plasma optical emission spectrophotometry and one-way analysis of variance (ANOVA) with Tukey�s post-hoc test. The content of fifteen elements was determined and content of K was highest among macroelements and Fe among microelements in both parts of the peach fruit. Also, peach peel had higher levels of all minerals with the exception of K. Greater differences between the peel and the pulp and the same parts of different types of peaches are observed in the case of macroelements than the microelements. Hg and Cd are not detected while the contents of Pb and As are below prescribed values.

scholarly journals Improved Reactivity of Fly Ash-Slag Geopolymer by the Addition of Silica Fume

2016 ◽  
Vol 2016 ◽  
pp. 1-11 ◽  
Author(s):  
N. K. Lee ◽  
G. H. An ◽  
K. T. Koh ◽  
G. S. Ryu
Keyword(s):  
Fly Ash ◽  
Silica Fume ◽  
Inductively Coupled Plasma ◽  
Optical Emission ◽  
X Ray Diffraction ◽  
Inductively Coupled ◽  
Aluminosilicate Gel ◽  
Silicate Structure ◽  
Different Types ◽  
Furnace Slag

This study investigates the improved reactivity of a geopolymer based on a combination of fly ash and blast furnace slag (BFS) by the addition of silica fume. The geopolymer was synthesized by activating a mixture of fly ash, BFS, and three different types of silica fume with alkali activator. X-ray diffraction (XRD) and inductively coupled plasma-optical emission spectroscopy (ICP-OES) were utilized to characterize the reaction. The silicate structure was also analyzed by nuclear magnetic resonance (NMR) spectroscopy. From these results, it was found that the replacement of fly ash with the silica fume led to a significant decrease in theQ4(1Al) and an increase in theQ4(2Al),Q4(3Al), andQ4(4Al). The Si/Al ratio of the aluminosilicate gel was relatively constant, ranging from 2.0 to 2.6, while the Si/Al ratio of the C-S-H gel increased with the addition of silica fume. Therefore, some of the Al dissolved from the slag contributed to the formation of aluminosilicate gel, and the remnant slag particles mostly participated in the formation of the C-(A)-S-H gel with a decrease in theQ2(1Al). The increase in the reactivity of slag caused by the addition of silica fume was attributed to the reaction of the Al in the slag with the silica fume.

A comparative study of sheathing devices to increase robustness in inductively coupled plasma optical emission spectrometryviaa nitrogen flow

2018 ◽  
Vol 33 (7) ◽  
pp. 1269-1273 ◽  
Author(s):  
Guilherme Luiz Scheffler ◽  
Dirce Pozebon ◽  
Diane Beauchemin
Keyword(s):  
Comparative Study ◽  
Inductively Coupled Plasma ◽  
Optical Emission ◽  
Nitrogen Flow ◽  
Device Design ◽  
Inductively Coupled

Introducing a nitrogen sheathing gas around the aerosol systematically increases robustnessversusan Ar ICP irrespectively of sheathing device design.

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.

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