scholarly journals Quantification of Selected Trace and Mineral Elements in Royal Jelly from Bulgaria by Icp-Oes and Etaas

2017 ◽  
Vol 61 (2) ◽  
pp. 223-232
Author(s):  
Ralitsa Balkanska ◽  
Elisaveta Mladenova ◽  
Irina Karadjova
Keyword(s):  
Inductively Coupled Plasma ◽  
Royal Jelly ◽  
Microwave Digestion ◽  
Electrothermal Atomic Absorption Spectrometry ◽  
Optical Emission ◽  
Absorption Spectrometry ◽  
Mineral Elements ◽  
Icp Oes ◽  
Inductively Coupled ◽  
Concentration Levels

Abstract The objective of the present study was to investigate selected trace and mineral elements in Royal Jelly (RJ) from Bulgaria. A total of 30 RJ samples were included in the study. The analytical procedure consisted of the microwave digestion of the RJ samples with nitric acid followed by instrumental measurement. Concentrations of Al, Ba, Ca, Cr, Cu, Fe, K, Mg, Mn, Na, P, Sr and Zn were determined using inductively coupled plasma optical emission spectroscopy (ICP-OES), while As, Cd, Co, Ni and Pb were determined by electrothermal atomic absorption spectrometry (ETAAS). Our results showed that elements K, Mg, Ca represented 96% from the total mineral content of the RJ samples from Bulgaria, while the most abundant trace element was Na, followed by Zn. The elements Ba, Cr, Cu, Fe, Mn and Sr were found in trace concentration levels and elements As, Pb, Cd, Co and Ni in microconcentration levels. Selected mineral and trace elements were found in relatively constant concentration levels in all of the analyzed RJ samples. It was concluded that chemical element content did not depend on geographical origin and was under homeostatic adjustment in RJs.

Nickels and tines: the myth of nickel allergy in intracranial stents

2022 ◽  
pp. neurintsurg-2021-018365
Author(s):  
Kevin N Vanent ◽  
Emma M Federico ◽  
David I Bass ◽  
Guilherme Barros ◽  
Jade Keen ◽  
...  
Keyword(s):  
Inductively Coupled Plasma ◽  
Optical Emission ◽  
Absorption Spectrometry ◽  
Neurological Injury ◽  
Nickel Concentration ◽  
Icp Oes ◽  
Nickel Allergy ◽  
Inductively Coupled ◽  
Nickel Release ◽  
The Media

BackgroundMost intracranial stents contain nickel alloy, and nickel allergy or hypersensitivity is common. Neurological injury following endovascular treatment with a nickel containing intracranial stent has been reported in patients with purported nickel allergy, but it is unclear whether these reactions represent true nickel hypersensitivity. We quantified nickel release from commonly used intracranial stents to investigate whether such stents should be avoided in patients with nickel allergy.MethodsWe examined nickel release from seven commonly used intracranial stents: Enterprise, LVIS Jr, Neuroform, Wingspan, Zilver, Pipeline Flex Embolization Device, and Surpass Evolve. We incubated each stent in human plasma-like media for 30 days. Dimethylglyoxime (DMG) spot testing was performed on each stent to detect released nickel at 0 and 30 days. Inductively coupled plasma–optical emission spectroscopy (ICP-OES) was then used to quantify the nickel concentration of the media at 30 days. Nickel currency and nickel standard for atomic absorption spectrometry were used as positive controls.ResultsDMG spot tests indicated nickel release only from nickel currency at 0 and 30 days of incubation. No nickel release was detected from any stent at 30 days using ICP-OES.ConclusionsNickel release from commonly used intracranial stents is negligible. These results suggest that previously reported hypersensitivity to these stents may be misattributed to nickel allergy, and that patients with nickel allergy may be safely treated with select nickel-containing stents.

scholarly journals Elemental and Thermo-gravimetric Characterization of Trace Metals in Leaves and Soils as Bioindicators of Pollution in Kyiv City

2021 ◽  
Vol 232 (8) ◽  
Author(s):  
Mohamed Tarik ◽  
Michael Hoffmann ◽  
Sergey Shmarin ◽  
Ajay Bhagwan Patil ◽  
Christian Ludwig
Keyword(s):  
Inductively Coupled Plasma ◽  
Metal Removal ◽  
Thermo Gravimetric Analysis ◽  
Optical Emission ◽  
Mineral Elements ◽  
Soil Samples ◽  
Gravimetric Analysis ◽  
Icp Oes ◽  
Thermo Gravimetric ◽  
Inductively Coupled

AbstractIn this study, leaf and soil samples were used as bio-monitors for different alkali and heavy metals at six different locations in Kyiv city. Using x–y plots of the inductively coupled plasma optical emission spectroscopy (ICP-OES) data measured the discrepancy level in elemental composition between the different investigated areas; the correlation between the concentrations in tree leaves and the samples from the surrounding soils were investigated. While the concentration of essential mineral elements and metals was found to be similar in several leaf and soil samples, in other samples, their concentration spread up to more than one order of magnitude. The concentration of metals was found to be higher in soil samples than in leaves. Thermo-gravimetric analysis (TGA) data helped to further characterize both types of samples. The metal removal during the incineration of the leaves was investigated by coupling a thermo-gravimetric analyzer to an inductively coupled plasma optical emission spectrometer (TGA-ICP-OES). The release of Cd, K, Na, Pb, and Zn during incineration at temperatures up to 960 °C was online monitored, and some insights were drawn about the behavior of such metals and the chemistry involved in the volatilization process.

scholarly journals Determination of Metal Content in Valerian Root Phytopharmaceutical Derivatives by Atomic Spectrometry

2005 ◽  
Vol 88 (1) ◽  
pp. 221-225 ◽  
Author(s):  
Silvia Arce ◽  
Soledad Cerutti ◽  
Roberto Olsina ◽  
María R Gomez ◽  
Luis D Martínez
Keyword(s):  
Inductively Coupled Plasma ◽  
Electrothermal Atomic Absorption Spectrometry ◽  
Optical Emission ◽  
Absorption Spectrometry ◽  
Atomic Emission ◽  
Atomic Spectrometry ◽  
Emission Spectrometry ◽  
Ultrasonic Nebulization ◽  
Inductively Coupled ◽  
Plasma Optical Emission Spectrometry

Abstract Phytopharmaceuticals containing Valerian are used as mild sleep-inducing agents. The elemental composition of 3 different marks of Valeriana officinalis roots commercially available in the Argentinian market, their teas, and a commercial tincture have been studied. The content of Al, Ca, Cd, Co, Cr, Cu, Fe, Li, Mn, Ni, Pb, V, and Zn was determined in phytopharmaceuticals by flame atomic emission/absorption spectrometry, electrothermal atomic absorption spectrometry, and ultrasonic nebulization coupled to inductively coupled plasma-optical emission spectrometry. Prior to analyses of the samples, a digestion procedure was optimized. The analytical results obtained for Fe, Al, Ca, and V in the solid sample study were within the range 100–1000 mg/kg, and for Mn, Zn, and Pb within the range 10–100 mg/kg. Cadmium was found at levels up to 0.0125 mg/kg.

scholarly journals First determination of mineral composition of the leaf Chicory (Cichorium intybus L.) used in human nourishment in the Midwest of Brazil and comparasion with dietary reference intakes for children and adults

10.3823/2420 ◽  
2017 ◽  
Vol 10 ◽  
Author(s):  
Rafaela Henriques Rosa ◽  
Andre Henrique de Oliveira Lopes ◽  
Valter Aragão do Nascimento ◽  
Ana Lucia Alves de Arruda ◽  
Igor Domingos de Souza ◽  
...  
Keyword(s):  
Adverse Effects ◽  
Inductively Coupled Plasma ◽  
Microwave Digestion ◽  
Optical Emission ◽  
Cichorium Intybus ◽  
Icp Oes ◽  
Mato Grosso ◽  
Inductively Coupled ◽  
Dietary Reference Intakes ◽  
Plasma Mass Spectrometry

Introduction: Radicchio (Cichorium intybus L.) is a leaf chicory and is grown as a leaf vegetable which usually has white-veined red or purple leaves and it belongs to the Asteraceae family. In several countries is consumed mainly as salad, but no studies on their elemental composition  has been done, principally in Brazil. Objective: The aim of present work was to measure the macroelements (Na, K, Ca, Mg and P) and microelements (Cr, Cu, Fe, Mn, Mo, Zn, Al, Cd, Ni, Co and Si) in the leaf Chicory used as human nourishment in the Campo Grande, State of Mato Grosso do Sul, Brazil. Method: Chemical digests of samples were prepared using HNO3 and H2O2 and then placed in the microwave digestion system. After digestion, the concentrations of the elements in Leaf Chicory were determined by the technique of Inductively Coupled Plasma - Optical Emission Spectrometer (ICP–OES, Thermo Scientific - iCAP 6000 Series). Results obtained of the concentrations of leaf chicory were compared with the dietary reference intakes. Results: Detected concentration of macroelements in leaf Chicory decreases in the order: K > P > Ca > Mg > Na. As well as the concentration of microelements decreases in the order: Fe > Al > Si > Mn > Zn > Cu > Cr > Ni > Cd > Mo > Co. Leaf Chicory is excellent source of K, Ca, Mg, P, Cr, Cu, Fe, Mn, Mo and Zn for children and adults. On the other hand, leaf chicory is not considered a source of sodium for children and adults. Concentration of K, Cr, Fe, and Al are above the limit recommended limit by FAO/WHO (1984) and others countries. Conclusions: Leaf Chicory has macro and microelements in ample amount; it can be used as an important part of people's diets. Since it not exceed allowable limits set by WHO and FAO, RDA/AI and UL. Competent organs have not evaluated concentrations of elements as Al, Cd, Ni, Co and Si in order to establish a tolerable upper intake level or RDA/AI for human. The lack of studies of adverse effects following excess intake of a nutrient does not mean that adverse effects do not occur. Keywords: Leaf Chicory; Radicchio; Inductively Coupled Plasma Mass Spectrometry (ICP-OES).

scholarly journals Performance Parameters of Inductively Coupled Plasma Optical Emission Spectrometry and Graphite Furnace Atomic Absorption Spectrometry Techniques for Pd and Pt Determination in Automotive Catalysts

Materials ◽  
2020 ◽  
Vol 13 (22) ◽  
pp. 5136
Author(s):  
Marin Senila ◽  
Oana Cadar ◽  
Lacrimioara Senila ◽  
Sarah Böringer ◽  
Karine Seaudeau-Pirouley ◽  
...  
Keyword(s):  
Inductively Coupled Plasma ◽  
Graphite Furnace ◽  
Optical Emission ◽  
Absorption Spectrometry ◽  
Emission Spectrometry ◽  
Icp Oes ◽  
Inductively Coupled ◽  
Graphite Furnace Atomic Absorption ◽  
Plasma Optical Emission Spectrometry

Palladium (Pd) and platinum (Pt) are extensively used as catalysts in the petrochemical and automotive industries, and due to high demand for them on the market, their recycling from spent supported catalysts is clearly needed. To assess the content of Pd and Pt in catalysts in order to establish their commercial value or to evaluate the recovery efficiency of technologies used for recycling, reliable analytical methods for determination of these elements are required. Spectrometric methods, such as inductively coupled plasma optical emission spectrometry (ICP-OES) and graphite furnace atomic absorption spectrometry (GFAAS) are powerful tools that can be employed for the determination of Pd and Pt in various sample matrices. However, these methods allow only the injection of liquid samples. In this regard, the digestion of solid sample by microwave-assisted acid extraction procedures at high pressures and temperatures is often used. In this study, a microwave acid digestion method was optimized for the extraction of Pd and Pt from spent catalysts, using a four-step program, at a maximum 200 °C. The resulting solutions were analyzed using ICP-OES, at two different wavelengths for each metal (Pd at 340.458 and 363.470 nm, and Pt at 265.945 and 214.423 nm, respectively) and using GFAAS (Pd at 247.64 nm, Pt at 265.94 nm). Five types of spent catalyst were analyzed and the standard deviations of repeatability for five parallel samples were less than predicted relative standard deviations (PRSD%) calculated using Horvitz’s equation for all the analyzed samples.

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