Remote sensing monitoring method for polycyclic aromatic hydrocarbons (PAHs) in sea surface water body suspension particles

Abstract

The invention discloses a remote sensing monitoring method for polycyclic aromatic hydrocarbons (PAHs) in sea surface water body suspension particles. The method is characterized in that an estuary and gulf water color parameter TSM (Total Suspended Matter) quantitative representation granule state PAHs content algorithm is built, and is applied to an image of the first geostationary ocean color imager (GOCI) in the world in order to acquire the remote sensing inversion concentration distribution situation of estuary and gulf granule state PAHs. By adopting the remote sensing monitoring method, the pollution condition of off-shore waters PAHs can be monitored by a remote sensing measure, and the distribution characteristic of sea pollutants can be monitored on a large area at a high frequency. A remote sensing model for the PAHs in the sea surface water body suspension particles based on measured data analysis is provided, and is applied to GOCI satellite data, and a relatively mature water color parameter TSM remote sensing inversion technology for a sea water body is adopted, so that large-area high-frequency remote sensing monitoring of the PAHs in a sea environment is realized.

Description

technical field [0001] The invention belongs to the field of marine environment remote sensing, and specifically relates to the fields of marine pollutants, marine ecological monitoring, marine water color remote sensing, water quality remote sensing and the like. This method extends the relatively mature satellite remote sensing retrieval technology of the Total Suspended matter (TSM) to the monitoring system of Polycyclic Aromatic Hydrocarbons (PAHs) in the marine environment. Large-scale, periodic monitoring of medium persistent organic pollutants. Background technique [0002] Persistent organic pollutants are a class of special pollutants with long-term persistence, bioaccumulation, semi-volatility and high toxicity. Once it enters the environment, it is difficult to explain it under natural conditions, and it persists for a long time, causing long-term harm to humans and ecosystems. Polycyclic aromatic hydrocarbons (PAHs) are a class of typical persistent organic pol...

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Problems solved by technology

[0003] At present, the monitoring method of PAHs in the marine environment is mainly carried out by combining on-site sampling and laboratory quantitative analysis. The traditional measurement method needs to send a large number of staff to the sea to collect samples one by one, and conduct a series of organic analysis pre-treatment on the samples. Processing work, and then testing the content of PAHs, from sample collection, sample processing to sample determination, the whole process takes a long time and requires a lot of manpower, financial and material resources

Due to the vast ocean area, harsh natural conditions, and high measurement costs, the traditional monitoring methods are low in efficiency and high in cost, and can only do point and line monitoring, and cannot realize large-scale monitoring of PAHs in the marine environment.

At the same time, PAHs in the marine environment have obvious dynamic changes with the moving water body, and traditional monitoring methods cannot achieve short-period and high-frequency monitoring

No matter in terms of sampling width or sampling period, traditional monitoring methods cannot meet the monitoring needs of large-scale and short-period

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