Inductively Coupled Plasma Optical Emission Spectrometric Determination of Gadolinium in Urine Using Flow Injection On‐Line Sorption Preconcentration in a Knotted Reactor

Salonia, José A.; Gásquez, José A.; Martínez, Luis D.; Cerutti, Soledad; Kaplan, M.; Olsina, Roberto A.

doi:10.1080/10739140600605910

Cited by 21 publications

(16 citation statements)

References 23 publications

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“…KRs allow high flow rates with lowpressure drops (the reactor is an open tube); they prevent loss of sensitivity due to dispersion; they are free from contamination since they are made of inert material (PTFE); KR is easy to build and inexpensive with long lifetime without efficiency losing. 16,17 New ideas involving the use of KRs include, as example, three-dimensional printed knotted reactors for sensitive differentiation of silver nanoparticles and ions in aqueous environmental samples, 18 a tandem of KR coupled with a portable tungsten coil electrothermal atomic absorption spectrometer for online determination of trace cadmium, 19 KR modification with activated carbon for determination of arsenic species in medicinal herbs and tea infusions, 20 and an association of cloud-point extraction with KR for cobalt preconcentration following by ET AAS (electrothermal AAS) determination in drinking water. 21 Multicommutation is an automation strategy applied to continuous-flow analysis systems, with configurations modified by computer-controlled commutators.…”

Section: Use Of Arduino In the Development Of A New And Fast Automatementioning

confidence: 99%

Use of Arduino in the Development of a New and Fast Automated Online Preconcentration System Based on Double-Knotted Reactor for the Mn Determination in Tea Samples by Flame Atomic Absorption Spectrometry (F AAS)

Barreto¹,

Lemos²,

Oliveira³

et al. 2020

J. Braz. Chem. Soc.

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In the present paper, an automated online preconcentration system based on the use of two knotted reactors (KR) was developed for Mn determination in tea samples by flame atomic absorption spectrometry (F AAS). The system automation was performed by using four solenoid valves to switch sample streams and reagents. Valves were driven electronically by an integrated Darlington transistor circuit and controlled by an open-source Arduino hardware platform written in C language. The preconcentration was based on the precipitation process of metal ions complexed with 2-(5-bromo-2-pyridylazo)-5-(diethylamino)phenol (5-Br-PADAP) on the inner walls of the reactor, followed by elution with a solution of hydrochloric acid. The optimized system allowed the Mn determination with limit of detection (LOD) of 2.1 mg L-1 , precision (relative standard deviation (RSD), 50.0 mg L-1) of 2.6% and enrichment factors of 8. The system presented a sampling frequency of 60 h-1. The method accuracy was evaluated by analysis of the certified reference material (CRM) apple leaves (NIST 1515) and by addition/ recovery tests obtaining recoveries between 95.2 to 119%. This method was applied in the Mn determination in commercial tea samples purchased from local trade. Manganese levels were found in a concentration range of 2.95 to 123 μg g-1 .

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Section: Use Of Arduino In the Development Of A New And Fast Automatementioning

confidence: 99%

Use of Arduino in the Development of a New and Fast Automated Online Preconcentration System Based on Double-Knotted Reactor for the Mn Determination in Tea Samples by Flame Atomic Absorption Spectrometry (F AAS)

Barreto¹,

Lemos²,

Oliveira³

et al. 2020

J. Braz. Chem. Soc.

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“…This situation has been improved significantly by utilizing on-line system coupled with ICP-OES [7][8][9]. Some methodologies used for metal preconcentration have been developed with ionic exchanger resins [10], precipitation [11], cloud point extraction [12][13][14], knotted reactors [15][16][17] and solid-phase extraction [18][19][20][21][22]. In the present work, an on-line procedure for simultaneous preconcentration and determination of Cr, Cu, Ni, Pb and Cd at low concentration levels using ICP-OES is proposed.…”

Section: Introductionmentioning

confidence: 99%

On-line system for preconcentration and determination of metals in vegetables by Inductively Coupled Plasma Optical Emission Spectrometry

Bezerra

Santos

Lemos

et al. 2007

Journal of Hazardous Materials

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“…Various methods such as: inductively coupled plasma-mass spectroscopy [4,5], inductively coupled plasma atomic emission spectroscopy [6], laserbased multi step resonance ionization [7], phosphorescence [8] and spectrofluorimetry [9] have been reported for Gd monitoring. However, these methods are expensive and time-consuming.…”

Section: Introductionmentioning

confidence: 99%

Competitive extraction of Gd(III) into a carbon paste electrode impregnated with a nano-sized Gd(III)-imprinted polymer as a new method for its indirect voltammetric determination

Alizadeh

2014

Microchim Acta

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We describe an indirect method for the voltammetric determination of Gd(III) ion. It is based on competitive extraction of Gd(III) into an ion-imprinted polymer (IIP) on the surface of a carbon paste electrode (CPE). The nano-sized IIP was synthesized via suspension polymerization in silicone oil and deposited on the CPE. The IIPmodified CPE was then incubated with solutions containing Pb(II) and a solution containing both Pb(II) and Gd(III) ions. The oxidative stripping differential pulse voltammetric signal for Pb(II) was utilized to determine the competitively extracted quantity of Pb(II). The presence of Gd(III) reduces the quantity of electroactive lead ions in the IIP located on the CPE. No such effect was observed for the case of a nonimprinted CPE. The effect of various factors on response were optimized. The drop in the signal for Pb(II) as a result of addition of Gd(III) is proportional to the concentration of Gd(III). The voltammetric response is linearly related to the concentration of Gd(III) in the 6.0 nM to 48 μM range, and the detection limit is 4.5 nM at an SNR of 3. The relative standard deviation is 3.7 % (for n=5). The electrode is selective for Gd(III) even in the presence of other lanthanide ions. The method was applied to the determination of G(III) in synthetic and in spiked real samples.

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Inductively Coupled Plasma Optical Emission Spectrometric Determination of Gadolinium in Urine Using Flow Injection On‐Line Sorption Preconcentration in a Knotted Reactor

Cited by 21 publications

References 23 publications

Use of Arduino in the Development of a New and Fast Automated Online Preconcentration System Based on Double-Knotted Reactor for the Mn Determination in Tea Samples by Flame Atomic Absorption Spectrometry (F AAS)

Use of Arduino in the Development of a New and Fast Automated Online Preconcentration System Based on Double-Knotted Reactor for the Mn Determination in Tea Samples by Flame Atomic Absorption Spectrometry (F AAS)

On-line system for preconcentration and determination of metals in vegetables by Inductively Coupled Plasma Optical Emission Spectrometry

Competitive extraction of Gd(III) into a carbon paste electrode impregnated with a nano-sized Gd(III)-imprinted polymer as a new method for its indirect voltammetric determination

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