废水有机污染物>烃类化合物检测 | Enhancing Sensitivity in Analysis of Semivolatile Organic Compounds with the Agilent 8890/5977C GC/MSD-安捷伦科技(中国)有限公司

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应用领域	环保
检测样本	废水
检测项目	有机污染物>烃类化合物
参考标准	/

Abstract This application note evaluates the performance of an Agilent 8890/5977C gas chromatography/mass selective detector (GC/MSD) in the analysis of semivolatile organic compounds (SVOCs) at both traditional and enhanced sensitivity levels. The GC/MSD system was initially calibrated with a range of 0.2 to 150 μg/mL with 97% of the 76 evaluated analytes meeting the requirement for average response factor (RF) curve fits. Method modifications to enhance sensitivity were applied to challenge a lower calibration range of 0.01 to 10 μg/mL. Under these amended conditions, 97% of the tested compounds also met or exceeded the United States Environmental Protection Agency (US EPA) Method 8270E criteria for average RF fits. These results demonstrated a potential for lower detection of analytes.

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Agilent 5977C GC/MSD 单四极杆气质联用仪
型号：5977C GC/MSD

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Introduction

The analysis of semivolatile organic compounds (SVOCs) provides a critical evaluation of our environment for persistent pollutants. The United States Environmental Protection Agency (US EPA) has issued regulations and guidelines in Method 8270E1 for the analysis of these analytes by gas chromatography/mass spectrometry (GC/MS). The analysis of SVOCs as a class comes with challenges and is a reasonable method of testing the performance of a GC/MS platform. The diverse set of analytes include phthalates, phenols, nitrosamines, aromatic nitro compounds, and polynuclear aromatic hydrocarbons (PAHs), among others. These analytes span a wide range of molecular weights and have a wide range of vapor pressures. Some of the analytes are well disposed to analysis by gas chromatography while others present significant challenges relating to stability,reproducibility, and chromatographic integrity.

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