Determination of polycyclic aromatic hydrocarbons in artisanal cachaça by DI-CF-SPME–GC/MS

Menezes, Helvécio Costa; Paulo, Breno P.; Paiva, Maria José Nunes de; Barcelos, Stella Maris Resende de; Macedo, Damiana Freire Dias; Cardeal, Zenilda de Lourdes

doi:10.1016/j.microc.2014.08.008

Cited by 27 publications

(18 citation statements)

References 28 publications

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“…A comparison between the extraction efficiencies using the proposed fiber and commercial fibers (PDMS/DVB and PDMS) was performed. The conditions for the extractions using commercial fibers were optimized (data not shown) as extraction time of 70 min at 80 • C. These values are much closed to those mentioned in the literature (extractions of 60 min at 70 • C) [22][23][24]. Figure 4 shows this comparison through bar graph using normalized peak area and considering the film thickness of each fiber.…”

Section: Comparison Between the Extraction Efficiencies Of The Biosormentioning

confidence: 89%

A Low-Cost Approach Using Diatomaceous Earth Biosorbent as Alternative SPME Coating for the Determination of PAHs in Water Samples by GC-MS

et al. 2018

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In this study, the use of recycled diatomaceous earth as the extraction phase in solid phase microextraction (SPME) technique for the determination of polycyclic aromatic hydrocarbons (PAHs) in river water samples, with separation/detection performed by gas chromatography-mass spectrometry (GC-MS), is proposed. The optimized extraction conditions are extraction time 70 min at 80 °C with no addition of salt. The limits of quantification were close to 0.5 μg L−1 with RSD values lower than 25% (n = 3). The linear working range was 0.5 μg L−1 to 25 μg L−1 for all analytes. The method was applied to samples collected from the Itajaí River (Santa Catarina, Brazil) and the RSD values for repeatability and reproducibility were lower than 15% and 17%, respectively. The efficiency of the recycled diatomaceous earth fiber was compared with that of commercial fibers and good results were obtained, confirming that this is a promising option to use as the extraction phase in SPME.

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Section: Comparison Between the Extraction Efficiencies Of The Biosormentioning

confidence: 89%

A Low-Cost Approach Using Diatomaceous Earth Biosorbent as Alternative SPME Coating for the Determination of PAHs in Water Samples by GC-MS

et al. 2018

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“…All (50) GF products were signed with a Crossed Grain symbol, which is given to the products with natural absence or acceptable level of gluten (below 20 mg kg −1 ). 16 Selected products included flours (14), breads (5), mixes for breads and cookies (6), snacks (8), pastas (4), flakes (8), and others such as grouts or beverages (5). Selected products were divided into two groups: 'traditional' (T) and 'alternative' (A) GF products.…”

Section: Methodsmentioning

confidence: 99%

“…They are often used in food studies to classify products according to various parameters. [5][6][7] PCA is a variable reduction procedure transforming a number of possibly correlated variables into a smaller number of variables called principal components, which are linear transformations of the original variables. The purpose of HCA is grouping objects into 'clusters' according to their similarity (or relations).…”

Section: Introductionmentioning

confidence: 99%

Chemometric analysis of minerals in gluten‐free products

2018

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“…It was observed that the third extraction presented low amounts of analytes, and none of the analytes showed linearity. Thus, only the first and second extractions were used to estimate the total area, according to equation (4). Other approaches such as summing the first and second peak areas for each analyte or the first, second and third peak areas were also evaluated, but the best procedure was attained by using equation (4), derived from the multiple extraction theory.…”

Section: Comparison Between Dispersive Liquid-liquid Microextraction mentioning

confidence: 99%

Improvement of dispersive liquid‐liquid microextraction robustness by performing consecutive extractions: Determination of polycyclic aromatic hydrocarbons in Brazilian sugar cane spirits by GC‐MS

Will

Huelsmann

Cunha

et al. 2018

Separation Science Plus

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This paper describes the development of a multiple dispersive liquid‐liquid microextraction method for the determination of fifteen polycyclic aromatic hydrocarbons in samples of Brazilian sugar cane spirit (known as cachaça) with separation and detection by GC‐MS. The results obtained with the multiple extraction approach were compared to those obtained with the conventional dispersive liquid‐liquid microextraction method using the same sample. Sample dilution and solvent volume were optimized using the response surface methodology. The coefficient of determination (R2) for the multiple dispersive liquid‐liquid microextraction method varied from 0.9939 to 0.9999. The limits of detection ranged from 0.06 to 1.5 μg L−1 and precision from 12 and 22%. The recovery values obtained with the proposed method ranged from 84 to 116%. The sum of the polycyclic aromatic hydrocarbons concentrations in six samples ranged from 0.65 to 12.2 μg L−1. Multiple dispersive liquid‐liquid microextraction was shown to be efficient in relation to compensating the matrix effects due to variations in the sample composition and the extraction parameters showed greater robustness compared to the conventional dispersive liquid‐liquid microextraction method, since it simulates an exhaustive extraction.

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Determination of polycyclic aromatic hydrocarbons in artisanal cachaça by DI-CF-SPME–GC/MS

Cited by 27 publications

References 28 publications

A Low-Cost Approach Using Diatomaceous Earth Biosorbent as Alternative SPME Coating for the Determination of PAHs in Water Samples by GC-MS

A Low-Cost Approach Using Diatomaceous Earth Biosorbent as Alternative SPME Coating for the Determination of PAHs in Water Samples by GC-MS

Chemometric analysis of minerals in gluten‐free products

Improvement of dispersive liquid‐liquid microextraction robustness by performing consecutive extractions: Determination of polycyclic aromatic hydrocarbons in Brazilian sugar cane spirits by GC‐MS

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