1994
DOI: 10.1002/elps.11501501203
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Analysis of lower aliphatic aldehydes in water by micellar electrokinetic chromatography with derivatization to 2,4‐dinitrophenylhydrazones

Abstract: The analysis of lower aliphatic aldehydes in water following derivatization to 2,4-dinitrophenylhydrazones, was investigated by micellar electrokinetic chromatography (MEKC). The effects of the buffer pH and acetonitrile addition on the separation were investigated. Under optimized conditions the 2,4-dinitrophenylhydrazine (DNPH) reagent was completely separated from four DNPH derivatized aldehydes with high separation efficiency. DNPH-formaldehyde and DNPH-acetaldehyde were also completely separated from one … Show more

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Cited by 20 publications
(17 citation statements)
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“…A adição de β-ciclodextrina (β-CD) ao eletrólito não proporcionou variações significativas no sinal analítico, quando comparado com os resultados obtidos ao utilizar-se como eletrólito 50 mmol L -1 de SDS e 20 mmol L -1 de tetraborato de sódio, pH 9 (resultados não apresentados). Entretanto a β-CD promoveu o desdobramento do pico do acetaldeído, freqüentemente atribuído aos isômeros cis-trans formados durante o processo de derivação 30 . Com base nos resultados obtidos optou-se pelo uso do eletrólito contendo β-ciclodextrina O método foi validado segundo os parâmetros de linearidade, precisão, recuperação, limite de detecção e quantificação.…”
Section: Contaminantes Orgânicosunclassified
“…A adição de β-ciclodextrina (β-CD) ao eletrólito não proporcionou variações significativas no sinal analítico, quando comparado com os resultados obtidos ao utilizar-se como eletrólito 50 mmol L -1 de SDS e 20 mmol L -1 de tetraborato de sódio, pH 9 (resultados não apresentados). Entretanto a β-CD promoveu o desdobramento do pico do acetaldeído, freqüentemente atribuído aos isômeros cis-trans formados durante o processo de derivação 30 . Com base nos resultados obtidos optou-se pelo uso do eletrólito contendo β-ciclodextrina O método foi validado segundo os parâmetros de linearidade, precisão, recuperação, limite de detecção e quantificação.…”
Section: Contaminantes Orgânicosunclassified
“…Carbonyl compounds, including the low-aliphatic aldehydes formaldehyde, acetaldehyde and acrolein, have been shown to be major air pollutants since they can be generated directly from incomplete fossil fuel combustion or indirectly by photochemical oxidation of volatile organic compounds emitted by various industrial sources [2,3]. Given the toxic potential of these molecules, sensitive techniques are needed to detect them even at low concentrations and indeed a series of reliable chromatographic (HPLC) and capillary electrophoretic (CE) approaches have already been developed for their exact quantification in air and other environmental samples [4][5][6][7][8][9][10] and in human exhaled breath condensate [11]. In addition, since the above-mentioned aldehydes are also major components of cigarette smoke, gas and liquid chromatographic techniques have been specifically designed for determining their amount in sidestream and mainstream cigarette smoke [12][13][14].…”
Section: Introductionmentioning
confidence: 99%
“…When a mixture of standards of the MBTH-derivatized aldehydes was diluted in pure tetraborate solution as compared to dilution in the running buffer, a substantial gain in signal was observed (approximately twofold increase in peak height for the formaldehyde peak), with concomitant improvement in peak efficiency. As a result of the improved efficiency, splitting of the peaks of acrolein and acetaldehyde was clearly visualized in the electropherogram of might be associated with the occurrence of cis-trans isomerization of the azine adducts during the derivatization reaction [9].…”
Section: Resultsmentioning
confidence: 98%
“…Other authors employed MEKC to analyze aldehyde-DNPH derivatives [9,10]. It is interesting to mention that the aldehyde-DNPH derivative based methodology is the CE version of the official HPLC method for aldehydes [11].…”
Section: Introductionmentioning
confidence: 99%