Determination of chlorine in food samples via the AlCl molecule using high-resolution continuum source molecular absorption spectrometry in a graphite furnace

Fechetia, Miriam; Tognon, André Luiz; Veiga, Márcia Andréia Mesquita Silva da

doi:10.1016/j.sab.2012.04.003

Cited by 29 publications

(41 citation statements)

References 11 publications

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“…Pereira et al 27,28 carried out the determination of chlorine using SrCl molecule and obtained LOD values of 2.0 µg g -1 , in a method for biological samples, and 5.6 µg g -1 in a method for coal. The determination of chlorine via CaCl molecule in food samples, employing two sample treatments, was also accomplished by Fechetia et al, 20 obtaining LOD values of 9.0 and 18 µg g -1 . Under the optimized conditions, the characteristic mass of the method was 0.10 ng.…”

Section: Matrix Interferencementioning

confidence: 99%

“…16,17 Chlorine determination by high-resolution continuum source molecular absorption spectrometry (HR-CS MAS) has been accomplished by detection of several diatomic molecules. 16,18 The most widely reported in the literature is AlCl [19][20][21][22][23][24][25] due to its high energy bond and well separated band heads, making it effective the background correction. 17,26 Strontium monochloride (SrCl) was applied for chlorine determination in different types of samples (coal, milk, animal organs and tissues, and wheat flour).…”

Section: Introductionmentioning

confidence: 99%

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Determination of Chlorine in Crude Oil Emulsified via the MgCl Molecule by HR‑CS MAS

Oliveira¹,

Medeiros²,

Silva³

et al. 2017

J. Braz. Chem. Soc.

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A method for chlorine determination in crude oil samples, through the formation of MgCl molecule, by high-resolution continuum source graphite furnace molecular absorption spectrometry (HR-CS GF MAS) was developed and is described in this paper. The use of this molecule for chlorine determination in crude oil has not been reported up to now. Measures were carried out at the wavelength 377.010 nm and the samples were submitted to a simple treatment as emulsion, whose composition was optimized applying a simplex-centroid experimental design. Magnesium was used as molecule forming agent at the concentration of 10 g L -1 , at least 500 times higher than the concentration of chlorine. This excess is required to ensure the molecule formation of all content of Cl present in the sample. Chemical modifier Pd was used and improved greatly the signal intensities. Optimized pyrolysis and vaporization temperatures, applied for determination, were 800 and 2300 °C, respectively. Accuracy was evaluated through analysis of certified reference materials, NIST 1848 and NIST 1634c, and addition and recovery tests with recoveries between 92 and 117%. Limits of detection and quantification were 3.0 and 9.0 µg g -1 , respectively. The method was applied to eight crude oil samples.

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Section: Matrix Interferencementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Determination of Chlorine in Crude Oil Emulsified via the MgCl Molecule by HR‑CS MAS

Oliveira¹,

Medeiros²,

Silva³

et al. 2017

J. Braz. Chem. Soc.

View full text Add to dashboard Cite

show abstract

“…Alternatively, the sampling cup was pre-treated with a total of 200 μg Pd as permanent modifier (10 injections of 20 μL of the stock solution). Calcium and Nd were then prereduced using a Tp of 1000°C [18], before the addition of each sample. Chlorine quantification in CRM was carried out using calibration against aqueous or solid standards using Pd + Nd or Pd + Ca pre-dried as modifiers and also without modifier using a solid standard.…”

Section: Analytical Proceduresmentioning

confidence: 99%

Application of direct solid sample analysis for the determination of chlorine in biological materials using electrothermal vaporization inductively coupled plasma mass spectrometry

Gois

Pereira

Welz

et al. 2015

Spectrochimica Acta Part B: Atomic Spectroscopy

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“…In addition, losses of halogens bound to organic structures have been reported in the literature for some biological samples, making this technique difficult to apply widely without additional pretreatment [37,40,47,82].…”

Section: Determination Of Halogens In Biological Samplesmentioning

confidence: 99%

Analytical methods for the determination of halogens in bioanalytical sciences: a review

et al. 2013

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Fluorine, chlorine, bromine, and iodine have been studied in biological samples and other related matrices owing to the need to understand the biochemical effects in living organisms. In this review, the works published in last 20 years are covered, and the main topics related to sample preparation methods and analytical techniques commonly used for fluorine, chlorine, bromine, and iodine determination in biological samples, food, drugs, and plants used as food or with medical applications are discussed. The commonest sample preparation methods, as extraction and decomposition using combustion and pyrohydrolysis, are reviewed, as well as spectrometric and electroanalytical techniques, spectrophotometry, total reflection X-ray fluorescence, neutron activation analysis, and separation systems using chromatography and electrophoresis. On this aspect, the main analytical challenges and drawbacks are highlighted. A discussion related to the availability of certified reference materials for evaluation of accuracy is also included, as well as a discussion of the official methods used as references for the determination of halogens in the samples covered in this review.

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Determination of chlorine in food samples via the AlCl molecule using high-resolution continuum source molecular absorption spectrometry in a graphite furnace

Cited by 29 publications

References 11 publications

Determination of Chlorine in Crude Oil Emulsified via the MgCl Molecule by HR‑CS MAS

Determination of Chlorine in Crude Oil Emulsified via the MgCl Molecule by HR‑CS MAS

Application of direct solid sample analysis for the determination of chlorine in biological materials using electrothermal vaporization inductively coupled plasma mass spectrometry

Analytical methods for the determination of halogens in bioanalytical sciences: a review

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