scholarly journals Determination of the Trace Element Contents of Fruit Juice Samples by ICP OES and ICP-MS

2021 ◽  
Vol 9 (35) ◽  
Author(s):  
Max José de Souza ◽  
María Carmen Barciela-Alonso ◽  
Manuel Aboal-Somoza ◽  
Pilar Bermejo-Barrera
Keyword(s):  
Inductively Coupled Plasma ◽  
Toxic Elements ◽  
Essential Elements ◽  
Fruit Juices ◽  
Emission Spectrometry ◽  
Good Precision ◽  
Icp Oes ◽  
Inductively Coupled ◽  
Icp Ms ◽  
Relative Standard

Fruit juices were analysed for their contents in a series of essential and toxic elements (Al, As, Ca, Cd, Co, Cr, Cu, Fe, Mg, Mn, Na, Ni, Pb, V, Sb, Mo and Zn). Samples were subjected to microwave-assisted acid digestion (HNO3/H2O2), and analytes were determined by inductively coupled plasma optical emission spectrometry (ICP-OES), in axial mode, or by inductively coupled plasma mass spectrometry (ICP-MS), with kinetic energy discrimination, using 103Rh and 89Y as internal standards. The methods were validated, showing good precision (relative standard deviations < 10%), linearity and mean analytical recovery values (89 to 103%). The ICP-OES instrumental limits of detection (LODs) were between 0.3 μg L-1 (for Mg) and 1.5 μg L-1 (for Ca), whereas ICP-MS instrumental LODs varied from 2 ng L-1 (for Co, Mo and V) to 5.7 μg L-1 (for Na). Some toxic elements (As and Sb) were not detected in the fruit juices analyzed, Cd concentrations were below the maximum permitted level established by Brazilian and European regulations and only in one sample the Pb concentration (61.7 µg L-1) exceeded current legal limits. Besides, essential elements such as Ca, Mg and Na were in high concentrations in the samples analyzed.

scholarly journals Determination of Macro, Micro and Toxic Elements using Argon-Based Plasma Spectroanalytical Methods in order to support Brazilian Regulations on Inorganic Constituents in Infant Foods

2021 ◽  
Vol 8 (10Years) ◽  
Author(s):  
Marcelo Tozo ◽  
Fernanda Pinheiro ◽  
Joaquim Nóbrega
Keyword(s):  
Inductively Coupled Plasma ◽  
Toxic Elements ◽  
Daily Intake ◽  
Optical Emission ◽  
Emission Spectrometry ◽  
Icp Oes ◽  
Infant Foods ◽  
Inductively Coupled ◽  
Icp Ms

Children's cereal-based foods and supplements are widely consumed by newborn and infant population. The Resolution RDC no. 193/2017 of the Brazilian National Health Surveillance Agency (ANVISA) established maximum tolerated limits (MTL) for toxic elements in infant foods aiming to control health risks. Complementarily, the determination of macro and microelements based on values of recommended daily intake (RDI) is regulated by Resolution RDC no. 269/2005. Two analytical procedures were developed using inductively coupled plasma mass spectrometry (ICP-MS) for determination of As, Cd, Sn and Pb and inductively coupled plasma optical emission spectrometry (ICP OES) for determination of Ca, Fe, K, Mg, Mn, Na, P and Zn attending both Brazilian regulations. Microwave-assisted acid digestion of solid samples was carried out in closed vessels using 7 mol L-1 HNO3. Two rice flours reference materials as well as addition and recovery experiments were applied to check accuracy. Recoveries ranged from 70 to 128% for ICP OES and from 82 to 128% for ICP-MS using internal standardization. The analytical procedure presented LOQs lower than maximum limits allowed by both regulations. Fifteen samples of cereal-based infant foods were analyzed and all analyte concentrations were lower than the respective MTLs recommended by RDC no. 193, except to Pb concentration in one milk flour sample. According to the RDI established by RDC no. 269 and the average concentrations of Ca, Fe, K, Mg, Mn, P and Zn in samples, it was possible to assign a minimum mass value of food that meets the recommendations of the Brazilian resolution for different population groups.

scholarly journals Alternative Approaches Applied to Inductively Coupled Plasma Techniques: Multi‑Flow and Two-Flow Calibration

2021 ◽  
Author(s):  
Raquel Machado ◽  
Ana Beatriz Silva ◽  
Daniel Andrade ◽  
Fernanda Pinheiro ◽  
Charles Williams ◽  
...  
Keyword(s):  
Inductively Coupled Plasma ◽  
Gas Flow ◽  
Linear Models ◽  
Matrix Effects ◽  
Analytical Signal ◽  
Emission Spectrometry ◽  
Icp Oes ◽  
Inductively Coupled ◽  
Icp Ms ◽  
Relative Standard

Multi-flow calibration (MFC) is based on monitoring the analytical signal from a single calibration standard solution at several different nebulization gas flow rates (Q), which normalizes plasma conditions and minimizes matrix effects. In the present study, MFC was evaluated, for the first time, applied to inductively coupled plasma optical emission spectrometry (ICP OES) and inductively coupled plasma mass spectrometry (ICP-MS) to analyze different and complexmatrix samples. Al, As, Cd, Cr, Cu, Mn, Pb, and Zn were determined by ICP OES, while As, Cd, Co, Cu, Hg, Mo, Mn, Ni, Se, Sb, Pb, and V were determined by ICP-MS. MFC results were compared with those obtained using external standard calibration (EC) for both techniques and in all cases, MFC showed equal or superior accuracy (recoveries between 80-120%) compared to EC, and lower relative standard deviation (RSDs ≤ 10%). Several tests were also performed using only two nebulization gas flows to build linear models for calibration (called two-flow calibration, TFC) and the accurate results (recoveries ranged from 80 to 110% for ICP OES and from 81 to 102% for ICP-MS) suggests that this strategy can be also applied, resulting in a method with high sample throughput.

scholarly journals Arsenic quantification techniques and ISO/IEC 17025 accreditation in Brazil

2019 ◽  
Vol 6 (14) ◽  
pp. 803-817
Author(s):  
Jefferson Luiz Antunes Santos ◽  
Jader Galba Busato ◽  
Rodrigo de Almeida Heringer ◽  
Juscimar da Silva ◽  
Leonardo Barros Dobbss
Keyword(s):  
Atomic Absorption Spectrometry ◽  
Atomic Absorption ◽  
Inductively Coupled Plasma ◽  
Hydride Generation ◽  
Absorption Spectrometry ◽  
Emission Spectrometry ◽  
Icp Oes ◽  
Analytical Technique ◽  
Inductively Coupled ◽  
Icp Ms

The importance of arsenic (As) quantification in environmental compartments is due to its risks to ecosystems and public health. There are reports of high concentrations of this metalloid in Brazil and technological differences between states are observed. The objective of this work was to present and discuss current scenarios of accreditation and compare the limit of quantification (LOQ) of As by analytical technique in Brazil. Data from accredited laboratories were collected on Inmetro website and in state metrological networks and then grouped and analyzed by state, matrix and analytical technique. There are large discrepancies between the number of laboratories per state and a good correlation with gross domestic product (GDP). Almost all laboratories have a LOQ less than the environmental limits. The observed list of techniques sorted from lowest to highest LOQ values is: for liquid samples ICP MS (inductively coupled plasma mass spectrometry), ET AAS (electrothermal atomic absorption spectrometry), HG AAS (hydride generation combined with atomic absorption spectrometry) or HG ICP OES (hydride generation combined with inductively coupled plasma optical emission spectrometry) and UV VIS (visible ultraviolet spectroscopy); for solids samples HG ICP OES, ICP MS, HG AAS, ET AAS and FAAS (flame atomic absorption spectrometry); and for bioindicators ICP MS, HG ICP OES. Analysis of As species is accredited in only one laboratory, but does not include all species.

Advantages, drawbacks and applications of mixed Ar–N2 sources in inductively coupled plasma-based techniques: an overview

2014 ◽  
Vol 6 (16) ◽  
pp. 6170-6182 ◽  
Author(s):  
G. L. Scheffler ◽  
D. Pozebon
Keyword(s):  
Mass Spectrometry ◽  
Inductively Coupled Plasma ◽  
Optical Emission ◽  
Emission Spectrometry ◽  
Icp Oes ◽  
Mixed Gas ◽  
Inductively Coupled ◽  
Icp Ms ◽  
Plasma Mass Spectrometry ◽  
Plasma Optical Emission Spectrometry

This review deals with mixed gas Ar–N2 plasmas, highlighting advantages, limitations and applications of them in inductively coupled plasma optical emission spectrometry (ICP OES), inductively coupled plasma mass spectrometry (ICP-MS) and laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) techniques, covering publications in the last three decades.

scholarly journals Accurate Determination of Boron Content in Halite by ICP-OES and ICP-MS

2019 ◽  
Vol 2019 ◽  
pp. 1-5
Author(s):  
Zhang-kuang Peng ◽  
Zhi-na Liu
Keyword(s):  
Inductively Coupled Plasma ◽  
Boron Content ◽  
High Salt ◽  
Icp Oes ◽  
Matrix Interference ◽  
Inductively Coupled ◽  
Icp Ms ◽  
Relative Standard ◽  
Salt Matrix ◽  
Identification And Quantification

Boron element is widely distributed in different geologic bodies, and there are important geo-chemical applications in earth science. Halite is a common mineral found in sediment basin. However there is no good method to accurately measure the boron content in halite, which is mainly because Inductively Coupled Plasma Optical Emission Spectrometer (ICP-OES) and Inductively Coupled Plasma Mass Spectrometer (ICP-MS) are limited by the high salt matrix interference and the instrument detection limit. Thus enriching the boron element and removing the matrix interference are necessary before the measuring. In this paper, Amberlite IRA 743 boron-specific resin was applied to enrich the boron element and remove most of the high-salt matrix. The strong acid cation resin (Dowex 50 W×8, 200-400 mesh, USA) and weak-base anion resin (Ion Exchanger II, Germany) were mixed with equal volume, which could remove the foreign ions completely: meanwhile, the relative content of boron in the solution reached above 98%, and the recoveries ranged from 97.8% to 104%. 208.900 nm was chosen as the detection wavelength for ICP-OES, and the detection identification and quantification limits were 0.006 mg·L−1 and 0.02 mg·L−1, respectively. 11B was chosen as the measuring element for ICP-MS, and the detection identification and quantification limits were severally 0.036 mg·L−1 and 0.12 mg·L−1. The relative standard deviations ranged from 1.4% to 3.4% through six replicates under different salinities. Therefore, the process could be regarded as a feasible method to measure boron content in halite by ICP-OES and ICP-MS.

Nanosecond laser ablation tandem inductively coupled plasma mass and optical emission spectrometry for micro-chemical elemental analysis

2017 ◽  
Vol 32 (11) ◽  
pp. 2246-2253 ◽  
Author(s):  
Gelian Gong ◽  
Saijun Sun ◽  
Jibin Zhou ◽  
Congyin Li ◽  
Xu Liang ◽  
...  
Keyword(s):  
Inductively Coupled Plasma ◽  
Optical Emission ◽  
Emission Spectrometry ◽  
Nanosecond Laser ◽  
Icp Oes ◽  
Inductively Coupled ◽  
Concentration Determination ◽  
Nanosecond Laser Ablation ◽  
Icp Ms

Simultaneous in situ concentration determination by LA-ICP-MS and LA-ICP-OES.

scholarly journals Development and Application of an ICP-AES Method for the Determination of Nutrient and Toxic Elements in Savory Snack Products after Autoclave Dissolution

Separations ◽  
2020 ◽  
Vol 7 (4) ◽  
pp. 66
Author(s):  
Natalia Manousi ◽  
George A. Zachariadis
Keyword(s):  
Trace Elements ◽  
Inductively Coupled Plasma ◽  
Atomic Emission ◽  
Emission Spectrometry ◽  
Good Precision ◽  
Plasma Atomic Emission Spectrometry ◽  
Inductively Coupled ◽  
Relative Standard ◽  
Snack Products

In this study, a method for the determination of trace elements in snacks using inductively coupled plasma–atomic emission spectrometry (ICP-AES) is presented. The examined elements were Pb, Ni, Cr, Cu, Mg, Zn, Fe, Al, Ba, Ca, Co, Mn and Cd. Under the optimized conditions, digestion of 300 mg of the snack samples was performed by the addition of 5 mL of nitric acid in a Teflon autoclave and by heating the obtained mixture at 120 °C for 75 min. In order to evaluate the efficiency of the proposed protocol, method linearity, accuracy precision, limits of detection (LODs) and limits of quantification (LOQs) were evaluated. The relative standard deviations (RSD%) for all elements were lower than 13.5%, demonstrating that the method offered good precision. The relative recoveries values (R%) ranged between 80–120%, demonstrating that the method offered good accuracy. The LODs for all the trace elements ranged between 0.18 and 3.75 μg g−1, while the LOQs ranged between 0.60 and 12.50 μg g−1. Finally, the proposed protocol was implemented for the analysis of a wide variety of savory snack samples including commercial snacks from corn, potato chips, popcorns, puffed rice cake and crackers.

Elemental chemical composition and As speciation in rice varieties selected for biofortification

2020 ◽  
Vol 12 (16) ◽  
pp. 2102-2113 ◽  
Author(s):  
Bruna Moreira Freire ◽  
Vivian da Silva Santos ◽  
Pericles de Carvalho Ferreira Neves ◽  
Juliana Maria Oliveira Souza Reis ◽  
Samuel Simião de Souza ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Inductively Coupled Plasma ◽  
Toxic Elements ◽  
Hydride Generation ◽  
Essential Elements ◽  
Rice Varieties ◽  
Inductively Coupled ◽  
Icp Ms ◽  
Plasma Mass Spectrometry ◽  
Rice Samples

Toxic elements, essential elements and other elements were determined in Brazilian rice by inductively coupled plasma-mass spectrometry (ICP-MS). A method for As speciation using hydride generation was developed and applied in rice samples.

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