Journals / İTÜ Dergisi Seri C: Fen Bilimleri / 2004 / Cilt: 2 - Sayı: 1

Separation and determination of polyaromatic hydrocarbons by capillary electrokinetic chromatography

Poliaromatik hidrokarbonların kapiler elektrokinetik kromatografi yöntemi ile ayrılması ve tayini

Pages
31–36
Publication Date
2022-10-18
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

Reproducibilities of migration times range between 1.15 and 1.55 %RSD and peak areas between 2 and 9 %RSD.

📌 3 Key Takeaways

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Objective & Hypothesis:Due to the abundance of polyaromatic hydrocarbons (PAHs) in the environment and the adverse health effects to which they have been linked, these compounds have been the focus of considerable attention in a number of areas including chemical separations.
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Key Findings & Data:In order to separate nonionic compounds in CE, an interaction -with a charged carrier in the buffer should be provided.
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Conclusion & Impact:Reproducibilities of migration times range between 1.15 and 1.55 %RSD and peak areas between 2 and 9 %RSD.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

Due to the abundance of polyaromatic hydrocarbons (PAHs) in the environment and the adverse health effects to which they have been linked, these compounds have been the focus of considerable attention in a number of areas including chemical separations. Especially, nowadays due to many advantages of the capillary electrophoresis technique (CE), detection and analyses of these kinds of compounds by using CE have become more important. In order to separate nonionic compounds in CE, an interaction -with a charged carrier in the buffer should be provided. Both PAHs can be separated in CE by using additives which cause selectivity change and resolution of PAHs having the same electrophoretic mobility, not only due to electrostatic interaction but also due to a combination of other effects like hydrophobicity, hydrogen bonding, dipole-dipole interaction, etc. Sodium dodecylbenzenesulfonate (SDBS) was evaluated as potential pseudo-stationary phase for the separation of highly hydrophobic polycyclic aromatic hydrocarbons (PAHs) with electrokinetic chromatography in aqueous-organic media. PAH molecules undergo a solvophobic interaction with the SDBS ion, forming negatively charged species that can migrate in an electric field. Thus electrophoretic separations of 8 PAHs and 3 aromatic compounds having different ring numbers (1-5) were achieved with efficiencies between 130.000-230.000 theoretical plates. Reproducibilities of migration times range between 1.15 and 1.55 %RSD and peak areas between 2 and 9 %RSD.

Özet

Poliaromatik hidrokarbonların (PAH çevrede bulunma sıklığı ve insan sağlığı üzerindeki zararlı etkileri nedeniyle bu bileşikler, pek çok alanda ön plana çıkmakta ve bunların bir karışımdan ayrılarak tayinleri de önem kazanmaktadır. Bu çalışmada sodyum dodesilbenzensülfonat (SDBS), hidrofobik poliaromatik hidrokarbonların (PAH) su-organik faz ortamında elektrokinetik kromatografi yöntemi ile ayrılmalarında sahte sabit faz olarak kullanılmıştır. PAH moleküllerinin, SDBS iyonu ile solvofobik etkileşimi sonucu negatif yük kazanan PAH türleri, elektrik alan altında hareket edebilirler. Böylece farklı halka (1-5) sayısına sahip 8 adet PAH ve 3 adet aromatik bileşik içeren örnek karışımının 130.000-230.000 arası teorik plaka etkinliği ile ayırımı başarılmıştır. Geliş zamanına göre bağıl tekrarlanırlık değerleri % 1.15-1.55 RSD, pik alanına göre ise % 2-9 RSD arasındadır.

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Cite This Article

BELİN, K. G., ERİM, F. B. (2022). Separation and determination of polyaromatic hydrocarbons by capillary electrokinetic chromatography. İTÜ Dergisi Seri C: Fen Bilimleri, Cilt: 2 - Sayı: 1, 31–36. https://ajindex.com/articles/556896

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