Coordinated Monitoring of Nitrogen and Phosphorus Pollution in Shenzhen River and Shenzhen Bay Based on UV-visible Absorption Spectroscopy Sensor
The construction of Shenzhen as a global marine center depends on technological innovation,institutional reform and management optimization.In order to construct a new land-sea integrated eco-environmental governance model,the land-sea coor-dinated monitoring methods and technologies of nitrogen and phosphorus pollution are needed.Using UV/VIS absorption spectrosco-py sensors as the core monitoring equipment,The study selected representative water areas along the Shenzhen River to Shenzhen Bay from top to bottom as the research area,conducts point monitoring,collected spectral fingerprints,real-time inversion of major pollution indicators such as salinity,nitrogen,phosphorus,etc.,and combined laboratory analysis results for partial least squares fit-ting.The research results indicate that the fitting coefficients R2 of UV/VIS absorption spectra for salinity,nitrate nitrogen,total ni-trogen,phosphate,and insoluble total phosphorus are 0.980,0.994,0.976,0.918,and 0.930,respectively.The fitting effect is good,and UV/VIS absorption spectra can be used for coordinated monitoring of nitrogen and phosphorus in land and sea.The application of this technology is of great significance for improving the efficiency of land sea collaborative monitoring,identifying the sources of land sea pollution,and observing the transportation process of land sea pollution.
UV visible absorption spectroscopy sensorcoastal waterswater monitoringpolymorphic nitrogen and phosphorus
NETL
NSTL
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