| abstract |
The invention aims to provide a system capable of realizing efficient, real-time and centralized enrichment and detection, which comprises: the enrichment device is used for enriching the environmental bioaerosol; a vacuum pump for providing a negative pressure during the enrichment; the injection pump is used for pumping the buffer solution into the enrichment device after enrichment so as to form an enrichment flushing solution; and the detection chip is used for detecting the concentration of the PAHs obtained by enriching flushing liquid, wherein the enriching device comprises an enriching head and an enriching cover, the enriching head is provided with an enriching shell, a plurality of enriching channels contained in the enriching shell and a connecting channel connected with one end of each enriching channel, a converging groove connected with the other end of the enriching channel is arranged on the enriching shell, and the enriching cover is provided with a cover body capable of covering the converging groove and a converging pipe penetrating through the converging pipe arranged on the cover body. |