Introduction of organic solvents into inductively coupled plasmas by ultrasonic nebulization with cryogenic desolvation

Wiederin, Daniel R.; Houk, R. S.; Winge, R.K.; D’Silva, Arthur P.

doi:10.1021/ac00210a012

Cited by 62 publications

(26 citation statements)

References 54 publications

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“…4 coupled plasma optical emission spectroscopy (ICP-OES) [27,28] and mass spectrometry (ICP-MS) [11,28,29,30] are highly appropriate to perform bioethanol analysis due to their low limits of detection and wide dynamic range. Unfortunately, ICP techniques suffer from non spectral interferences caused by the ethanolic matrices that preclude the accuracy of the determinations.…”

Section: Accepted M Manuscriptmentioning

confidence: 99%

Metal and metalloid determination in bioethanol through inductively coupled plasma-optical emission spectroscopy

Sanchez

Lienemann

Todolı́

2016

Spectrochimica Acta Part B: Atomic Spectroscopy

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A new method to carry out the elemental determination of metals in bioethanol through ICP-OES has been developed. The procedure is based on the use of a heated Torch Integrated Sample Introduction System (hTISIS) to directly introduce the vaporized sample into the plasma. Two injection modes (continuous liquid aspiration and air-segmented flow injection analysis) have been evaluated. In a first step, the matrix effects caused by several ethanol-water mixtures were removed by operating the hTISIS at 400ºC in segmented injection. Meanwhile, the results also proved that the system could be operated in continuous mode at 200ºC with the complete interferences removal. Finally, twenty-eight real samples with bioethanol contents between 55% and 100% were analyzed with the methods previously developed.Regarding validation, recoveries from 80% to 120% were obtained for 18 analytes and the concentrations found with the proposed method were in agreement with those encountered with a preconcentration method, taken as a reference procedure. Limits of detection went from 3 ng mL -1 for manganese to about 500 ng mL -1 for calcium. This allowed to quantify Cr, Fe, Mg, Mn and Zn in segmented flow injection and Al, Cd, Cr, Cu, K, Mg, Mn, Na and Zn in continuous sample aspiration mode in bioethanol samples.

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Section: Accepted M Manuscriptmentioning

confidence: 99%

Metal and metalloid determination in bioethanol through inductively coupled plasma-optical emission spectroscopy

Sanchez

Lienemann

Todolı́

2016

Spectrochimica Acta Part B: Atomic Spectroscopy

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“…); 16,17 (ii) addition of oxygen and/or nitrogen to the nebulizer and outer gas flows; 16,[18][19][20] (iii) use of low-flow sample introduction systems, 18,19,[21][22][23] cooled spray chambers 24,25 and/or desolvation systems. 13,15,[26][27][28] A microwave-based desolvation system (MWDS) for use in ICP-based techniques has been developed by our research group. 29 This device has been successfully applied to the analysis of aqueous and acid solutions both in ICP-AES 29,30 and ICP mass spectrometry (ICP-MS).…”

Section: Introductionmentioning

confidence: 99%

Introduction of organic solvent solutions into inductively coupled plasma-atomic emission spectrometry using a microwave assisted sample introduction system

Grindlay

Pérez

Gras

et al. 2006

J. Anal. At. Spectrom.

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A microwave assisted sample introduction system based on the use of a TM 010 cavity (MWDS2) has been employed for the introduction of 10% w/w organic solvent solutions in inductively coupled plasma atomic emission spectrometry (ICP-AES). Ethanol, propan-2-ol, formic and acetic acids have been used. Firstly, the effect of the incident microwave power and the sample uptake rate on the emission signal was evaluated. For all matrices tested, the higher emission signals were obtained when operating at the highest microwave power (i.e., 290 W) and sample uptake rate (400 mL min À1 ). Results with the MWDS2 were compared with those afforded by a desolvation system based on the use of a domestic microwave oven (MWDS) and by a conventional sample introduction system (CS). The MWDS2 provides the highest emission signals (up to 7 and 17 times higher than those with the MWDS and the CS, respectively). As regards the matrix effects originated by the organic solutions, results demonstrate that the use of a microwave-based sample introduction system, mainly the MWDS2, affords a noticeable reduction in the matrix effects originated by the use of organic solvent solutions in ICP-AES with a conventional sample introduction system. This behaviour can be explained by taking into account the solution transport rates afforded by the different sample introduction systems. For all the analytical lines and matrices tested and operating at 400 mL min À1 , the MWDS2 gives rise to signal values that are, on average, 1.2 AE 0.2 times the signal obtained with water. For the MWDS and the CS, this factor takes values of 1.6 AE 0.2 and 2.0 AE 0.5, respectively. Transient matrix effects have been observed operating with the MWDS2 when switching between water and an organic matrix solution. These transient effects result in a drift time about 4.5 times higher than those with a CS.

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“…However, the measurement of elemental concentrations, including the calibration of the spectrometer, has proved to be very difficult in organic phases. There are a number of suggested techniques published in the literature [1,2,3,4,5] dealing with how these problems may be overcome. Furthermore, these methods only deal with the determination of analytes in a single phase (i.e., either aqueous or organic).…”

Section: Introductionmentioning

confidence: 99%

Detection of zirconium in organic and aqueous phases using an inductively coupled plasma-mass spectrometer and the same aqueous standards

et al. 2002

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Solvent extraction requires measurement of both aqueous and organic phases, and common techniques of such measurements are tedious and time consuming. This paper outlines an inductively coupled plasma-mass spectrometric technique in which both aqueous and organic phases (both contained in a carrier phase, ethanol) can be measured using the same calibration curve. The method has proved to be successful as long as the organic and aqueous content in the carrier phase is kept below 10%. The developed technique is a more convenient tool for solvent extraction chemists who have often used radioactive tracers within their experimental techniques. In addition, this technique may be used in environmental studies involving the analysis of organic fractions, such as metal fingerprinting of petroleum fluids. In such analyses, the ability to use more available and traceable aqueous standards will lead to significantly improved confidence in the analytical results.

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Introduction of organic solvents into inductively coupled plasmas by ultrasonic nebulization with cryogenic desolvation

Cited by 62 publications

References 54 publications

Metal and metalloid determination in bioethanol through inductively coupled plasma-optical emission spectroscopy

Metal and metalloid determination in bioethanol through inductively coupled plasma-optical emission spectroscopy

Introduction of organic solvent solutions into inductively coupled plasma-atomic emission spectrometry using a microwave assisted sample introduction system

Detection of zirconium in organic and aqueous phases using an inductively coupled plasma-mass spectrometer and the same aqueous standards

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