ABSTRACT
The samples of sea water and oceanic living things, including 8 kinds of animals and 21 plants were collected from Dinghai Qingdao and Yulin harbor in China and were experimented with mustard gas, lewisite, sarin and VX. The results showed that when fishes and crabs were in sea water of 5-35℃ which contaminated by mustard gas (50-750mg/l) for several minutes, they will appeared symptoms and died one hour later.The color of 12 kinds plants of Chlorophyta and Phaeophyta were changed just a few minutes after contacted with mustard gas and other agents.It also showed that effects of acid and alkali on plants of Phaeophyta have the same action as chemical agents as mentioned above.This method is simple and practical.Combining with some signs of chemical attack in war, it can be used for detection of gases, so it has some practical significance.