Marine environment is the basis of our human survival and development, the ship as the basis of marine traffic, in the process of operation will inevitably and inevitably cause marine environmental pollution, so as to damage marine biological resources, and also endanger human health. Marine pollution destroys the quality of the use of seawater and has a harmful impact on the comfort of the marine environment.

Under the prospect of sustainable development strategy, advocating harmony, development, environmental protection, health, reducing pollution, economy has become the new theme of the 21st century. With the rapid development of modern shipbuilding industry, people pay more and more attention to the environmental pollution caused by ship exhaust emissions.

According to a 2012 study in Shanghai, ship emissions of sulfur dioxide (SO2), nitrogen oxides (NOx) and fine particulate matter (PM2.5) accounted for 12.4 percent, 11.6 percent and 5.6 percent, respectively. In Hong Kong, data in 2012 show that ship exhaust emissions are the largest source of inhalable particulate matter (PM10), NOx and SO2 in the city, with the first two accounting for about 30% and SO2 accounting for 50%. In order to control and reduce ship exhaust pollution, China issued a national standard for ship air pollutant emission control in 16 years.

Carbon dioxide in ship exhaust has a greenhouse effect on the atmospheric environment. Freon causes damage to the atmosphere, causing harmful ultraviolet rays to reach the ground and causing damage to human skin; SO2 in ship exhaust will form acid rain, and NO will be oxidized by ozone into highly toxic NO2, which will not only damage the environment, but also cause great harm to the human body. Nitrogen oxides will form photochemical smog substances and so on. The harm of harmful gas emissions from ships is huge and cannot be underestimated.

The Alphasense B4 four-electrode sensor can effectively detect nitrogen oxides, SO2 and other gases, and its resolutionResolution can beAs low as less than 10ppb, it has the advantages of corresponding speed, short reflection time, anti-interference, and wide working range. It is very suitable for ship exhaust emission detection. B4 sensor has good adaptability in ship dynamic air detection or grid detection along the river. In addition to ship exhaust monitoring, the B4 sensor is also suitable for air detection in urban areas or specific areas. Want to know more information, welcome to consult.