完了，我帝教授素质堪忧
发表于 ： 2023年 2月 14日 02:16
症屁言之凿凿，氯乙烯一烧就完，除了吸点光气，顺便下个盐酸雨，两天后又可以呼吸甜美空气了。
结果这个水货化学系教授，就是不相信民主自由，非搞科学辩经，应该是我鳖特务。
Officials warned the controlled burn would send phosgene and hydrogen chloride into the air. Phosgene is a highly toxic, colorless gas with a strong odor that can cause vomiting and breathing trouble and was used as a weapon in World War I.
Phosgene is considered safe at 0.1 parts per million during an eight-hour exposure, or 0.2 ppm for a 15-minute exposure. The eight-hour exposure threshold would have to be even lower when measuring inside people’s homes, where residents often spend more than eight consecutive hours.
Hydrogen chloride is a colorless to yellowish gas with a strong odor and its primarily effect on humans is skin, eye, nose and throat irritation. It is considered safe at 5 ppm for an eight-hour exposure.
Neil Donahue, a professor chemistry at Carnegie Mellon University in nearby Pittsburgh, said he worries that the burning could have formed dioxins, which are created from burning chlorinated carbon materials.
“Vinyl chloride is bad, dioxins are worse as carcinogens and that comes from burning,” Donahue said.
Dioxins are a group of persistent environmental pollutants that last in the ground and body for years and have been one of the major environmental problems and controversies in the United States.
结果这个水货化学系教授，就是不相信民主自由，非搞科学辩经，应该是我鳖特务。
Officials warned the controlled burn would send phosgene and hydrogen chloride into the air. Phosgene is a highly toxic, colorless gas with a strong odor that can cause vomiting and breathing trouble and was used as a weapon in World War I.
Phosgene is considered safe at 0.1 parts per million during an eight-hour exposure, or 0.2 ppm for a 15-minute exposure. The eight-hour exposure threshold would have to be even lower when measuring inside people’s homes, where residents often spend more than eight consecutive hours.
Hydrogen chloride is a colorless to yellowish gas with a strong odor and its primarily effect on humans is skin, eye, nose and throat irritation. It is considered safe at 5 ppm for an eight-hour exposure.
Neil Donahue, a professor chemistry at Carnegie Mellon University in nearby Pittsburgh, said he worries that the burning could have formed dioxins, which are created from burning chlorinated carbon materials.
“Vinyl chloride is bad, dioxins are worse as carcinogens and that comes from burning,” Donahue said.
Dioxins are a group of persistent environmental pollutants that last in the ground and body for years and have been one of the major environmental problems and controversies in the United States.