Multi-walled carbon nanotube-impregnated agarose film microextraction of polycyclic aromatic hydrocarbons in green tea beverage

Loh, Saw Hong; Sanagi, Mohd Marsin; Ibrahim, Wan Aini Wan; Hasan, Mohamed Noor

doi:10.1016/j.talanta.2012.12.032

Cited by 54 publications

(25 citation statements)

References 34 publications

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“…300) and of the use of GC–MS for determination. These LODs are lower than those of other methods for determining PAHs in wine (0.1–2 ng L −1 ), fruit‐based soft drinks (0.3–15 ng L −1 ), tea (0.1–50 ng L −1 ) or beer (1.2–3.7 µg L −1 ) . The main advantages of the proposed method include the low volumes of organic solvents it requires thanks to its using a semi‐automated SPE system, which also lowers the risk of contamination from the environment or the analyst.…”

Section: Discussionmentioning

confidence: 67%

“…However, some PAHs are not fluorescent and have to be determined with an alternative technique . Thus, PAHs in green tea beverages were determined by HPLC with UV detection following extraction of the analytes by SPME with multi‐walled carbon‐impregnated agarose as sorbent, the resulting sensitivity being comparable to that obtained with HPLC–FLD: 0.1–50 ng L −1 . Gas chromatography with flame ionization detection was also used to determine PAHs in tea .…”

Section: Introductionmentioning

confidence: 99%

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Use of semi‐automated continuous solid‐phase extraction and gas chromatography–mass spectrometry for the determination of polycyclic aromatic hydrocarbons in alcoholic and non‐alcoholic drinks from Andalucía (Spain)

2018

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Section: Discussionmentioning

confidence: 67%

Section: Introductionmentioning

confidence: 99%

Use of semi‐automated continuous solid‐phase extraction and gas chromatography–mass spectrometry for the determination of polycyclic aromatic hydrocarbons in alcoholic and non‐alcoholic drinks from Andalucía (Spain)

2018

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“…The amount of analytes extracted increased as the sample volume increased and reached optimum at 15 mL and the extraction efficiency did not increase significantly with further increase in sample volume. This was due to the C 18 film was saturated with the PAHs and further increase in sample volume would not result in the increment of the peak areas [12]. Therefore, 15 mL sample solution was applied for next parameter study.…”

Section: Sample Volumementioning

confidence: 99%

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2018

MJAS

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Polycyclic aromatic hydrocarbons (PAHs) are produced as by-products in the coffee roasting process. A simple and efficient micro-solid phase extraction (µ-SPE) procedure coupled with high performance liquid chromatography and fluorescence detection has been developed for the simultaneous analysis of selected PAHs, namely phenanthrene (PHE) and benzo[a]pyrene (BaP) in coffee beverage. The method offered trace detection limits in the range of 0.003 to 0.1 µg/L and good relative recovery average in the range of 88.3 to 95.7%. The µ-SPE procedure has been simplified by employing C 18 film as an adsorbent. The method is beneficial in terms of rapidity, simple operation, in-expensive, consumption of micro volumes of solvent and biodegradable agarose film as the adsorbent holder. The method was then applied to analyse five coffee beverage samples and the results indicated the presence of BaP in the range of 1.0 to 1.9 µg/L. Keywords: agarose, polycyclic aromatic hydrocarbons, coffee, C 18 , micro-solid phase extraction Abstrak Hidrokarbon aromatik polisiklik (PAHs) dihasilkan sebagai produk sampingan dalam proses memanggang kopi. Suatu prosedur pengekstrakan mikro-fasa pepejal (µ-SPE) yang mudah dan cekap bergabung dengan kromatografi cecair berprestasi tinggi dan pengesanan pendarfluor telah dibangunkan untuk analisis serentak PAHs terpilih, iaitu fenanterena (PHE) dan benzo[a]pirena (BaP) dalam minuman kopi. Kaedah ini menawarkan had pengesanan surih dalam julat 0.003 hingga 0.1 µg/L dan purata perolehan semula relatif yang baik dalam julat 88.3 hingga 95.7%. Prosedur µ-SPE ini telah diringkaskan dengan menggunakan filem C 18 sebagai penjerap. Kaedah ini berfaedah daripada aspek ianya cepat, beroperasi mudah, tidak mahal, penggunaan isipadu pelarut yang mikro dan filem agarosa yang terdegradasi-bio sebagai pemegang penjerap. Kaedah ini kemudian diaplikasikan untuk menganalisa lima sampel minuman kopi dan keputusan menunjukkan kehadiran BaP dalam julat 1.0 hingga 1.9 µg/L.

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“…Native ligand with electron donor groups (-NH 2 ) on chitosan made it a highly potential dispersion agent for MWCNTs and prevented deactivation of sorbent by agglomeration [63,88].The performance of synthesized composite film was evaluated in -SPE for selected nonsteroidal antiinflammatory drugs and tricyclic antidepressant drugs. Four stacked pieces (5.0 × 5.0 mm 2 ) pierced by a syringe needle were required for each extraction.…”

Section: Agarose/chitosan Reinforced and Blended Mwcnt Microextractionmentioning

confidence: 99%

Agarose‐ and alginate‐based biopolymers for sample preparation: Excellent green extraction tools for this century

Sanagi

Loh

Ibrahim

et al. 2016

J of Separation Science

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Recently, there has been considerable interest in the use of miniaturized sample preparation techniques before the chromatographic monitoring of the analytes in unknown complex compositions. The use of biopolymer-based sorbents in solid-phase microextraction techniques has achieved a good reputation. A great variety of polysaccharides can be extracted from marine plants or microorganisms. Seaweeds are the major sources of polysaccharides such as alginate, agar, agarose, as well as carrageenans. Agarose and alginate (green biopolymers) have been manipulated for different microextraction approaches. The present review is focused on the classification of biopolymer and their applications in multidisciplinary research. Besides, efforts have been made to discuss the state-of-the-art of the new microextraction techniques that utilize commercial biopolymer interfaces such as agarose in liquid-phase microextraction and solid-phase microextraction.

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Multi-walled carbon nanotube-impregnated agarose film microextraction of polycyclic aromatic hydrocarbons in green tea beverage

Cited by 54 publications

References 34 publications

Use of semi‐automated continuous solid‐phase extraction and gas chromatography–mass spectrometry for the determination of polycyclic aromatic hydrocarbons in alcoholic and non‐alcoholic drinks from Andalucía (Spain)

Use of semi‐automated continuous solid‐phase extraction and gas chromatography–mass spectrometry for the determination of polycyclic aromatic hydrocarbons in alcoholic and non‐alcoholic drinks from Andalucía (Spain)

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Agarose‐ and alginate‐based biopolymers for sample preparation: Excellent green extraction tools for this century

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