PONA analyses of cracked gasoline by 1H NMR spectroscopy. Part II

Sarpal, A. S.; Kapur, G. S.; Mukherjee, S.; Tiwari, Archana

doi:10.1016/s0016-2361(00)00123-x

Cited by 68 publications

(56 citation statements)

References 7 publications

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“…Some methods quantified the sum of aromatic protons 45 or paraffins, olefins, naphthenes, and aromatics. 57 Only recently, our group suggested NMR to be used as convention method to quantify MOSH and MOAH, especially with the possibility of detecting only the toxicologically relevant aromatic rings, in a similar fashion to the LC-GC-FID approach. 1 The major advantage of NMR over any chromatographic or mass spectrometric method is that-at least in ideal cases such as pure mineral oil hydrocarbon products-the sample can be directly measured without any need for sample preparation or pretreatment.…”

Section: Nuclear Magnetic Resonancementioning

confidence: 99%

Analytical Methods for the Determination of Mineral Oil Saturated Hydrocarbons (MOSH) and Mineral Oil Aromatic Hydrocarbons (MOAH)—A Short Review

et al. 2018

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Mineral oils (such as paraffinum liquidum or white oil), which consist of mineral oil saturated hydrocarbons (MOSH) and mineral oil aromatic hydrocarbons (MOAH), are widely applied in various consumer products such as medicines and cosmetics. Contamination of food with mineral oil may occur by migration of mineral oil containing products from packaging materials, or during the food production process, as well as by environmental contamination during agricultural production. Considerable analytical interest was initiated by the potential adverse health effects, especially carcinogenic effects of some aromatic hydrocarbons. This article reviews the history of mineral oil analysis, starting with gravimetric and photometric methods, followed by on-line-coupled liquid chromatography with gas chromatography and flame ionization detection (LC-GC-FID), which still is considered as gold standard for MOSH-MOAH analysis. Comprehensive tables of applications in the fields of cosmetics, foods, food contact materials, and living organisms are provided. Further methods including GCxGC-MS methods are reviewed, which may be suitable for confirmation of LC-GC-FID results and identification of compound classes. As alternative to chromatography, nuclear magnetic resonance (NMR) spectroscopy has recently been suggested for MOSH-MOAH analysis, especially with the possibility of detecting only the toxicologically relevant aromatic rings. Furthermore, NMR may offer potential as rapid screening especially with low-field instruments usable for raw material control.

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Section: Nuclear Magnetic Resonancementioning

confidence: 99%

Analytical Methods for the Determination of Mineral Oil Saturated Hydrocarbons (MOSH) and Mineral Oil Aromatic Hydrocarbons (MOAH)—A Short Review

et al. 2018

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“…In addition, hydrocarbon type analysis of the pyrolysed oils and their blends in diesel has been determined from the NMR spectra of the samples, based on the 1 HNMR method for diesel range samples [40][41]. A comparison of hydrocarbon type analysis of the oils and blends, in terms of total saturates (paraffins+naphthenes), total aromatics and total olefins is presented in the Table 3.…”

Section: Application Of Pyrolysed Oil From Pyo-pp and Pyo-popp40 As Cmentioning

confidence: 99%

Thermal cracking of potato-peel powder-polypropylene biocomposite and characterization of products—Pyrolysed oils and bio-char

Sugumaran

Prakash

Arora

et al. 2017

Journal of Analytical and Applied Pyrolysis

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“…This parameter, related to complete fuel combustion, is directly associated to the quality parameters of gasoline and consequently to the prices. [2][3][4] In Brazil, gasolines are sold at gas stations as common, premium and podium. These gasolines have different specifications for quality parameters, anhydrous fuel ethanol content and anti-knock index (AKI).…”

Section: Introductionmentioning

confidence: 99%

1H NMR and Chemometric Methods to Estimate the Octane Number in Brazilian C Gasolines

Pinto¹,

Gambarra-Neto²,

Flores³

et al. 2020

J. Braz. Chem. Soc.

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Brazilian gasoline type C can be purchased with octane number as the main difference. This quality parameter directly affects the price. Intermediate formulations may not be easily distinguished from conform samples due to similarity in visual appearance and physicochemical properties. The use of anhydrous ethanol as an additive also influences the octane values of the product. In this context, the present study describes the use of 1 H nuclear magnetic resonance spectroscopy (1 H NMR) associated with chemometrics in the characterization and distinction of gasolines by different octane number. Conform samples of common, premium and blends of common-premium were used. Models of NMR-PCA (principal component analysis) and NMR-SIMCA (soft independent modelling of class analogies) showed a good correlation with the values determined by the standard method. The octane values predicted by the NMR-PLS (partial least squares) model achieved a good correlation root mean square errors of prediction (RMSEP = 0.50), with the values determined by the standard method as well.

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PONA analyses of cracked gasoline by 1H NMR spectroscopy. Part II

Cited by 68 publications

References 7 publications

Analytical Methods for the Determination of Mineral Oil Saturated Hydrocarbons (MOSH) and Mineral Oil Aromatic Hydrocarbons (MOAH)—A Short Review

Analytical Methods for the Determination of Mineral Oil Saturated Hydrocarbons (MOSH) and Mineral Oil Aromatic Hydrocarbons (MOAH)—A Short Review

Thermal cracking of potato-peel powder-polypropylene biocomposite and characterization of products—Pyrolysed oils and bio-char

1H NMR and Chemometric Methods to Estimate the Octane Number in Brazilian C Gasolines

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