表面声波快速检测技术在化工职业危害检测中的应用

Appliance of portable GC-SAW rapid detection for chemical occupational hazard detection

目的对便携式色谱-表面声波检测技术与国家标准采样检测方法进行比较。方法将便携式色谱-表面声波检测仪(GC-SAW检测仪)设定一定的色谱、声波检测器工作条件,并将识别出的主要化合物用国家标准方法进行采样、实验室分析,比较两种不同检测方法所得结果之间的符合程度。结果不同采样点存在的有机化合物种类、浓度各异,普遍在国家职业卫生标准的允许浓度之下,最高检出毒物环己烷浓度为1.7mg/m3,主要存在烷烃类物质、氯代烃类、苯系物、酚类化合物等。现场快速检测结果与实验室国标检测结果符合程度较高。结论利用便携式GC-SAW检测技术可较快速准确的计算出化合物的浓度,并与国标方法结果无显著差异。

Objective To make a comparison between Portable GC -- SAW rapid detecting method and national standard method. Methods Portable GC- SAW was transported to the scene,with a certain conditions of chromatographic Chromatog-aphy, main types and concentrations of organic compounds were determined at different locations in the enterprise and the environment around it by automatic sampling technique,the main compounds identified by GC-SAW technology were compared to the result of determined by national standard laboratory method for proximity. Results There were different types and concentrations of organic compounds, including Alkanes, chlorinated hydrocarbons, benzene, chlorobenzene, etc. The maximum concentration of cyclohexane was 1. 7 mg/ms. Conclusion Portable GC-SAW technology can be employed to identify the type of organic compounds existed in the air of ambient and to measure the concentration of identified compounds. Furthermore, this method can be used for recognition the kinds of occupational harmful factors.