Scholarlink

<p>Polycyclic aromatic hydrocarbons (PAHs), especially the 16 priority pollutants listed by the US Environmental Protection Agency, are frequently monitored in environmental samples. However, PAHs other than the 16 US EPA compounds and PAH derivatives should also be determined due to their co-occurrence with significant abundance and/or toxicity. This study aims to propose a simple, rapid, and reliable sample preparation method for PAHs and their methylated derivatives (Me-PAHs) in sediment samples. The samples were extracted by using ultrasonic processor extraction, and the extracts were purified by column chromatography, followed by gas chromatography with mass spectrometry (GC/MS) quantification. Subsequent extraction with acetone/toluene (1:1, v/v) mixture and toluene combined with clean-up by Florisil/silica gel column exhibited adequate recovery and matrix removal efficiency. Concentrations of almost PAHs and Me-PAHs in the NIST SRM 1944 samples were generally consistent with certified and reference values, except for levels of some low-molecular-weight compounds showing large variations between studies. The validated method was applied to measure PAHs and Me-PAHs in sediment samples collected from Vietnam and Japan, showing high applicability for monitoring 19 PAHs and 15 Me-PAHs in emerging and developing countries due to its advantages, such as efficiency, simplicity, rapidity, and cost-effectiveness.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Development of an Analytical Scheme for Simultaneous Determination of 34 Unsubstituted and Methylated PAHs in Sediment Samples Using Ultrasonic Processor Extraction, Sorbent Cleanup, and GC/MS Quantification

  • 期刊论文

  • 发表日期：

    2026年4月28日

查看全文
  • Anh Quoc Hoang,
  • Duc Hieu Nguyen,
  • Thi Anh Huong Nguyen,
  • Thi Huong Hue Hoang,
  • Thi Hue Chu,
  • Van Long Dang,
  • Minh Binh Tu,
  • Shin Takahashi

摘要

Polycyclic aromatic hydrocarbons (PAHs), especially the 16 priority pollutants listed by the US Environmental Protection Agency, are frequently monitored in environmental samples. However, PAHs other than the 16 US EPA compounds and PAH derivatives should also be determined due to their co-occurrence with significant abundance and/or toxicity. This study aims to propose a simple, rapid, and reliable sample preparation method for PAHs and their methylated derivatives (Me-PAHs) in sediment samples. The samples were extracted by using ultrasonic processor extraction, and the extracts were purified by column chromatography, followed by gas chromatography with mass spectrometry (GC/MS) quantification. Subsequent extraction with acetone/toluene (1:1, v/v) mixture and toluene combined with clean-up by Florisil/silica gel column exhibited adequate recovery and matrix removal efficiency. Concentrations of almost PAHs and Me-PAHs in the NIST SRM 1944 samples were generally consistent with certified and reference values, except for levels of some low-molecular-weight compounds showing large variations between studies. The validated method was applied to measure PAHs and Me-PAHs in sediment samples collected from Vietnam and Japan, showing high applicability for monitoring 19 PAHs and 15 Me-PAHs in emerging and developing countries due to its advantages, such as efficiency, simplicity, rapidity, and cost-effectiveness.