Related News
Little fish safeguard the water of Beijing
Source: Xinhua |
July 16, 2009, Thursday
|
Print Edition
Print Edition
CHINESE scientists have adopted the principle of the coal mine canary to monitor water quality by using fish to test for pollutants.
A machine containing more than 20 small fish swimming in small tubes is used to monitor water quality in Beijing, said Wang Zijian, a professor with the Chinese Academy of Sciences' Research Center for Eco-Environment Sciences.
"These fish safeguard the sources of the capital's domestic water day and night," said Wang.
The machine contains eight tubes, each holding a water sample and three to four fish about 2-3 centimeters long.
"The behavior of fish will change in case of contamination, such as the speed of their movement," said Wang. The machine detects the changes.
Only fish highly sensitive to slight pollutants, such as Japanese killifish and Indian zebra fish, were chosen, said Wang.
Fish aged just three or four months are the best suited to the job. The fish are replaced every two weeks to prevent them adjusting to pollutants.
A machine containing more than 20 small fish swimming in small tubes is used to monitor water quality in Beijing, said Wang Zijian, a professor with the Chinese Academy of Sciences' Research Center for Eco-Environment Sciences.
"These fish safeguard the sources of the capital's domestic water day and night," said Wang.
The machine contains eight tubes, each holding a water sample and three to four fish about 2-3 centimeters long.
"The behavior of fish will change in case of contamination, such as the speed of their movement," said Wang. The machine detects the changes.
Only fish highly sensitive to slight pollutants, such as Japanese killifish and Indian zebra fish, were chosen, said Wang.
Fish aged just three or four months are the best suited to the job. The fish are replaced every two weeks to prevent them adjusting to pollutants.
- About Us
- |
- Terms of Use
- |
-
RSS - |
- Privacy Policy
- |
- Contact Us
- |
- Shanghai Call Center: 962288
- |
- Tip-off hotline: 52920043
- 娌狪CP璇侊細娌狪CP澶05050403鍙-1
- |
- 浜掕仈缃戞柊闂讳俊鎭湇鍔¤鍙瘉锛31120180004
- |
- 缃戠粶瑙嗗惉璁稿彲璇侊細0909346
- |
- 骞挎挱鐢佃鑺傜洰鍒朵綔璁稿彲璇侊細娌瓧绗354鍙
- |
- 澧炲肩數淇′笟鍔＄粡钀ヨ鍙瘉锛氭勃B2-20120012
Copyright 漏 1999- Shanghai Daily. All rights reserved.Preferably viewed with Internet Explorer 8 or newer browsers.
