山东省汽车喷涂行业VOCs排放特征研究

采用气袋采样-气相色谱/质谱法,采集并分析了山东省内小型通用车、货车、电动商务车以及半挂车4类典型汽车喷涂企业挥发性有机物(VOCs)的排放特征。结果表明:山东省汽车喷涂企业中VOCs排放总量以及检出数量排序为:半挂车喷涂企业电动商务车喷涂企业货车喷涂企业小型通用车喷涂企业。各类汽车喷涂企业喷漆以及烘干车间排放的VOCs大多以苯类物质为主(小型通用车面漆烘干车间除外),在小型通用车以及半挂车涂装企业废气中烷烃类物质占比较大。不同企业以及各企业不同工序之间特征VOCs排放浓度有较大差别,喷漆车间特征VOCs浓度要远高于烘干车间。

Characteristics of Volatile Organic Compound Emission from the Automobile Painting Industry in Shandong Province

In this paper, VOCs emitted from the enterprises of car painting, truck painting, electronic commercial vehicle painting and trailer painting in Shandong Province were sampled and emission characteristics was analyzed by use of canister-GC/MS methods. The results showed that with regard to the total emission concentrations and species of VOCs emitted from the automobile painting enterprises in Shandong, the painting enterprises were ranked in such a descending order as trailer > electric commercial vehicle >truck > car. Aromatics were the major species emitted from various auto-painting enterprises and drying workshops (except for the car topcoat drying workshop). Alkanes were the major species emitted from car and trailer painting enterprises. Concentrations of VOCs emission were quite different with regard to different enterprises and various working process, with concentrations of VOCs emitted from painting workshops much higher than those from drying workshops.