Gas chromatography is commonly employed to detect gaseous pollutants. However, gaseous pollutants in paper mills are multicomponent and difficult to be detected and analyzed by gas chromatography. Therefore, we developed a novel autoanalyzer with an embedded supervisory system, with which multicomponent gaseous pollutants in paper mills can be detected in real time. The autoanalyzer was applied in two paper mills for the detections of the total volatile organic compounds (TVOC) and benzene at five sampling sites. The detection results show that the TVOC concentrations in two mills exceed the standard severely, especially in mill A, which can be attributed to the application of pulping and bleaching chemicals. In addition, benzene is also detected in Mill A due to benzene release from the fluorescent brighteners in the papermaking section. The large amounts of TVOC detected in the sequencing batch reactor (SBR) equalization tank of Mill A are explained by their release from the biodegradation of wastewater.

气相色谱法通常用于检测气态污染物。但是，造纸厂中的气态污染物是多组分的，难以通过气相色谱法检测和分析。因此，我们开发了一种带有嵌入式监控系统的新型自动分析仪，可以实时检测造纸厂中的多组分气态污染物。该自动分析仪应用于两个造纸厂，用于在五个采样点检测总挥发性有机化合物（TVOC）和苯。检测结果表明，两个工厂的TVOC浓度严重超过标准，特别是在A工厂中，这可归因于制浆和漂白化学品的应用。此外，由于造纸区荧光增白剂释放出苯，因此在工厂A中也检测到苯。