分析仪器

为实现快速监测恶臭污染中的关键物质硫化物与苯系物，研制了基于气相色谱-光离子化(GC-PID)检测技术的便携式分析仪。该仪器集成了采样、分离与检测模块，具备良好便携性，可在10分钟内同步检测硫化氢、甲硫醇、乙苯等9种污染物。各组分线性相关系数大于0.999，方法检出限为0.002～0.04 mg/m³，相对标准偏差为0.23%～3.3%，并能有效识别实际样品中多种共存组分，为恶臭污染现场快速筛查与溯源提供了新的技术路径与分析工具。

A portable analyzer based on gas chromatography-photoionization detection was developed for rapid monitoring of key sulfur compounds and benzene homologues in odor pollution. The integrated instrument combines sampling, separation, and detection modules, offering high portability. It enables simultaneous detection of nine pollutants, including hydrogen sulfide, methyl mercaptan, and ethylbenzene, within 10 minutes. All compounds show linear correlation coefficients above 0.999, method detection limits of 0.002-0.04 mg/m³, and relative standard deviations of 0.23%-3.3%, with effective identification of multiple coexisting components in real samples. This study provides a reliable analytical tool for rapid on-site screening and source tracing of odor pollution.