Evaluating the total gold concentration in metallic nanoparticles with a high content of organic matter through microwave-assisted decomposition platform and plasma-based spectrometric techniques (ICP-MS and ICP OES)

Talanta ◽  
2021 ◽  
Vol 224 ◽  
pp. 121808
Author(s):  
Naiara V. Godoy ◽  
Rodrigo M. Galazzi ◽  
Katherine Chacón-Madrid ◽  
Marco A.Z. Arruda ◽  
Italo O. Mazali
Keyword(s):  
Organic Matter ◽  
Metallic Nanoparticles ◽  
Gold Concentration ◽  
Icp Oes ◽  
Microwave Assisted ◽  
Icp Ms ◽  
Assisted Decomposition

Development of a simple and robust microwave-assisted decomposition method for the determination of rare earth elements in coal fly ash by ICP-OES

2017 ◽  
Vol 9 (13) ◽  
pp. 2031-2040 ◽  
Author(s):  
M. V. Balarama Krishna ◽  
G. Venkateswarlu ◽  
D. Karunasagar
Keyword(s):  
Rare Earth ◽  
Fly Ash ◽  
Rare Earth Elements ◽  
Decomposition Method ◽  
Coal Fly Ash ◽  
Icp Oes ◽  
Step Method ◽  
Microwave Assisted ◽  
Assisted Decomposition

A novel two-step method based on hotplate treatment (HT) in combination with microwave-assisted decomposition (MWD) was developed for the determination of rare earth elements (REEs) in coal fly ash samples by ICP-OES.

scholarly journals Determination of trace element concentrations in tomato samples at different stages of maturation by ICP OES and ICP-MS following microwave-assisted digestion

2013 ◽  
Vol 109 ◽  
pp. 145-149 ◽  
Author(s):  
Fernanda C. Bressy ◽  
Geysa B. Brito ◽  
Isa S. Barbosa ◽  
Leonardo S.G. Teixeira ◽  
Maria Graças A. Korn
Keyword(s):  
Trace Element ◽  
Icp Oes ◽  
Microwave Assisted ◽  
Element Concentrations ◽  
Icp Ms ◽  
Microwave Assisted Digestion

Microwave-Assisted Digestion Using Diluted Nitric Acid for Multi-element Determination in Rice by ICP OES and ICP-MS

2016 ◽  
Vol 10 (4) ◽  
pp. 1007-1015 ◽  
Author(s):  
Taiana B. Tarantino ◽  
Isa S. Barbosa ◽  
Daniel de C. Lima ◽  
Madson de G. Pereira ◽  
Leonardo S. G. Teixeira ◽  
...  
Keyword(s):  
Nitric Acid ◽  
Icp Oes ◽  
Element Determination ◽  
Microwave Assisted ◽  
Icp Ms ◽  
Microwave Assisted Digestion

scholarly journals Effects of food processing methods on migration of heavy metals to food

2019 ◽  
Vol 62 (1) ◽  
Author(s):  
Joon-Goo Lee ◽  
Jeong-Yun Hwang ◽  
Hye-Eun Lee ◽  
Tae-Hun Kim ◽  
Jang-Duck Choi ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Food Processing ◽  
Water Soluble ◽  
Icp Oes ◽  
Acid Digestion ◽  
Tea Leaves ◽  
Processing Methods ◽  
Migration Rates ◽  
Microwave Assisted ◽  
Icp Ms

Abstract Heavy metals including Lead (Pb), Cadmium (Cd), Arsenic (As) and Aluminium (Al) were analysed in oilseeds, noodles, tea leaves and their processed or cooked products to study the effects of food processing methods on migration of heavy metals. The heavy metals were determined with ICP-MS and ICP-OES following microwave-assisted acid digestion. Heavy metals in oilseeds, noodles and teas were reduced by extracting oils, boiling noodles, and infusing teas. And the transfer of heavy metals into boiling water and infusion tea was increased as the boiling and infusion time is increased. Heavy metals in foods are water soluble and heavy metals in foods would be decreased when foods are processed or cooked with water. Furthermore, it is needed to determine the migration rates in other cooked foods and assess the risk of heavy metals with concentrations calculated by the migration rates.

scholarly journals Studies on the Content of Selected Technology Critical Elements (Germanium, Tellurium and Thallium) in Electronic Waste

Materials ◽  
2021 ◽  
Vol 14 (13) ◽  
pp. 3722
Author(s):  
Joanna Willner ◽  
Agnieszka Fornalczyk ◽  
Magdalena Jablonska-Czapla ◽  
Katarzyna Grygoyc ◽  
Marzena Rachwal
Keyword(s):  
Solar Cell ◽  
New Technologies ◽  
Electronic Waste ◽  
Quantitative Composition ◽  
Icp Oes ◽  
Electronic Components ◽  
Critical Elements ◽  
Weee Recycling ◽  
Icp Ms ◽  
And Migration

The article draws attention to the problem of the presence of metals: germanium (Ge), tellurium (Te), thallium (Tl), and others (Cd, Ba, Co, Mn, Cr, Cu, Ni, Pb, Sr, and Zn) in selected waste of electrical and electronic equipment (WEEE). As a result of the growing demand for new technologies, the global consumption of TECs has also been increasing. Thus, the amount of metals in circulation, of which the impacts on the environment have not yet been fully understood, is constantly increasing. Due to the low content of these metals in WEEE, they are usually ignored during e-waste analyses. The main aim of this study was to determine the distribution of Ge, Te, and Tl (and other elements) in ground sieve fractions (1.0, 0.5, 0.2, and 0.1 mm) of selected electronic components (solar lamps, solar cell, LED TV screens, LCD screens, photoresistors, photodiodes, phototransistors) and to determine the possible tendency of the concentrations of these metals in fractions. This problem is particularly important because WEEE recycling processes (crushing, grinding, and even collection and transport operations) can lead to dispersion and migration of TCE pollutants into the environment. The quantitative composition of e-waste was identified and confirmed by ICP-MS, ICP-OES and SEM-EDS, and XRD analyses. It was found that Ge, Te, and Tl are concentrated in the finest fractions of ground e-waste, together with Cd and Cr, which may favor the migration of these pollutants in the form of dust during storage and processing of e-waste.

scholarly journals Comparison of Serum, Plasma, and Liver Zinc Measurements by AAS, ICP-OES, and ICP-MS in Diverse Laboratory Settings

2021 ◽  
Author(s):  
Andrew G. Hall ◽  
Janet C. King ◽  
Christine M. McDonald
Keyword(s):  
Inductively Coupled Plasma ◽  
Method Development ◽  
Geometric Mean ◽  
Zinc Content ◽  
Plasma Zinc ◽  
Icp Oes ◽  
Percent Error ◽  
Accuracy And Precision ◽  
Icp Ms ◽  
Standardized Method

AbstractProgress improving zinc nutrition globally is slowed by limited understanding of population zinc status. This challenge is compounded when small differences in measurement can bias the determination of zinc deficiency rates. Our objective was to evaluate zinc analytical accuracy and precision among different instrument types and sample matrices using a standardized method. Participating laboratories analyzed zinc content of plasma, serum, liver samples, and controls, using a standardized method based on current practice. Instrument calibration and drift were evaluated using a zinc standard. Accuracy was evaluated by percent error vs. reference, and precision by coefficient of variation (CV). Seven laboratories in 4 countries running 9 instruments completed the exercise: 4 atomic absorbance spectrometers (AAS), 1 inductively coupled plasma optical emission spectrometer (ICP-OES), and 4 ICP mass spectrometers (ICP-MS). Calibration differed between individual instruments up to 18.9% (p < 0.001). Geometric mean (95% CI) percent error was 3.5% (2.3%, 5.2%) and CV was 2.1% (1.7%, 2.5%) overall. There were no significant differences in percent error or CV among instrument types (p = 0.91, p = 0.15, respectively). Among sample matrices, serum and plasma zinc measures had the highest CV: 4.8% (3.0%, 7.7%) and 3.9% (2.9%, 5.4%), respectively (p < 0.05). When using standardized materials and methods, similar zinc concentration values, accuracy, and precision were achieved using AAS, ICP-OES, or ICP-MS. However, method development is needed for improvement in serum and plasma zinc measurement precision. Differences in calibration among instruments demonstrate a need for harmonization among laboratories.

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