| abstract |
The present invention relates to a kind of chemical analysis systems for total nitrogen, including automatic sampling apparatus, sampling needle, peristaltic pump, the first reaction flow path, the second reaction flow path and third to react flow path；Automatic sampling apparatus is connect by sampling needle with peristaltic pump, and the first reaction flow path, the second reaction flow path and third reaction flow path are sequentially connected, and forms example reaction flow path, and peristaltic pump is connect with the first reaction flow path, the second reaction flow path and third reaction flow path；First reaction flow path, the second reaction flow path and third reaction flow path are respectively equipped with first bubble injection device, the second bubble injection device and third bubble injection device；First bubble injection device, the second bubble injection device and third bubble introduce air, reagent and sample by the pump line on peristaltic pump respectively, so that the air introduced is entered liquid line and form bubble, separate sample and reagent by bubble.The present invention can batch detection sample, analysis speed it is fast, accuracy is high, reproducible, detection limit is low, reagent and sample consumption are few. |