Researchers at the University of Birmingham in the United Kingdom announced on May 17 that they have developed a new type of optical device that can quickly detect whether the water quality meets the drinking standard according to the fluorescence characteristics of the water within 30 seconds. It is expected to be used for disaster relief, sewage treatment, etc. aspect.
According to the researchers, all water bodies emit fluorescence, but the human eye is not sensitive enough to light at specific wavelengths, so these fluorescences are not easily noticeable by the naked eye. Previous studies have shown that because water pollutants have different fluorescent characteristics, water pollution can be identified by analyzing water fluorescence.
The device, developed by the University of Birmingham team, detects fluorescence at specific wavelengths to determine the presence of microbes and organic carbon in the water. Researchers say that using this device to "scan" water, the test can be completed in as little as 30 seconds.
In contrast, traditional methods require more than 12 hours to complete water quality testing, and the use of relatively high-cost biochemical reagents, which can not meet the needs of the disaster area and poor areas to quickly find clean water.
John Bridgman, a professor at the University of Birmingham who led the project, said the operation of the new device is very simple, and ordinary people can quickly learn to use it, which will benefit the future in remote areas.
According to reports, the research team has cooperated with a Chinese company to use this new equipment to assist a sewage treatment plant in Guangzhou to improve sewage treatment efficiency.
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