To date, there is still a lack of detection equipment for tellurium content on the market, and online real-time monitoring of heavy metal pollution cannot be achieved. The relevant person in charge of the Hejiang Municipal Government Propaganda Department revealed yesterday that the suspected source of pollution has been found in a small plain surrounded by mountains in the border of Xintian Village, Huangtian Town, Hezhou City.

Hezhou has manganese ore, rare earths, tungsten resources, and other metals, symbiotic cadmium, tellurium and other metals. For a long time, some of the local environmental protection facilities of small-scale mining enterprises have not met the requirements. In the process of mineral processing and washing, no waste water has been spilled, and some have also been suspected of stealing waste water residues and bringing pollution to rivers and vegetation. . The local supervisory authorities once cleared up and rectified. Hezhou City launched a "clean river" rectification operation six months ago, shutting down some small businesses after power cuts, but later revived. Some companies also disguised themselves as private houses and started work in private at night. Stealing. At the press conference in Hezhou yesterday, the deputy mayor closed the east of the sea and said that Cao Yongxu, the former deputy chief engineer of the Pearl River Basin Water Environment Monitoring Center, said that currently some small monitoring stations basically do not have the ability to monitor quails because cesium monitoring is Special instruments are needed for testing, and they are more expensive. Only large-scale monitoring and analysis institutions are available. However, even if there is monitoring power, monitoring agencies will not be able to monitor every day. If the water quality is not monitored immediately after pollution, monitoring information may lag behind.

Can we achieve online monitoring of heavy metal pollution? Cao Yongxu said that there is an electrode method that can be achieved. However, an imported device requires more than 1 million yuan, and the operation is very cumbersome, the maintenance costs are also high, plus the technology is not yet mature, the accuracy is not high. The above-mentioned urban water supply experts also stated that the heavy metal on-line monitoring system can only monitor copper, lead, cadmium, hexavalent chromium, manganese, etc. Currently, there is no mature and reliable on-line inspection equipment.

Gan Rihua, chief physician of the Guangdong Provincial Health Supervision Office, said that the national standards limit the amount of heavy metals is very low, accurate monitoring data need to be completed in the laboratory, for the time being there is no online monitoring system can do.