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Ambient
Summary:
AQI (Air Quality Index) network monitoring provides general pollutant data and gives administrative support; whereas source analysis demonstrates the formulation of pollutants. The combination of two approaches gives specific evidence of ambient forecast and right solution for treatment.
Ambient Photochemical Pollution Monitoring System
Programme OverviewProgramme CompositionFeatures of The SchemeApplication Cases
Programme Overview

Ambient photochemical pollution monitoring system is equipped with core monitoring system such as online photochemical precursors and photolysis rates to achieve comprehensive monitoring of ozone pollution; combines the comprehensive data analysis platform to determine the situation in the ozone pollution control area, and analyze the source of VOCs; helps relevant departments to achieve continuous improvement of air quality by finely controlling ozone and VOCs emission monitoring.


During the formulation of photochemical pollution process, various species are generated and reformed, including ozone and other oxides (such as hydrogen peroxide, aldehydes or PAN) from primary pollutants, called precursors: nitrogen oxides (NOX), non-methane volatile organic compounds (NMVOC), carbon monoxide (CO) and methane (CH4). Some of parameters are more representative for indication of seriousness of such phenomenon, as these species will only exist during the formulation process which will not get any interference from background. FPI’s ambient photochemical pollution monitoring system construct an atmospheric photochemical pollution monitoring network to support the formation, mechanism and process analysis of photochemical pollution.

Programme Composition

The ambient photochemical pollution monitoring system consists of two parts: application analysis platform and data collection platform.


• Application Analysis Platform
The platform will finally determine the emission control area based on the monitored data, generate an O3 contribution rate chart, analyze the potential of ozone formation, analyze the VOC source resolution and pollutant characteristics.


• Data Collection Platform
Photochemical Precursor Monitoring: 

The VOC-100 consists of a low carbon (C2-C5) analyzer and a high carbon (C6-C12) analyzer, with FID & PID dual detectors to measure photochemical precursors from C2-C12; WAGA-100 atmospheric water-soluble ionic component online analyzer can accurately measure various water-soluble ions (HONO) in the atmosphere; The AQMS-600 NOX analyzer uses chemiluminescence to measure the level of NOX in the ambient to determine or predict the degree of light pollution.

Process Factor Monitoring:
The analyzer is receiving solar radiation by quartz probe and transferring the radiation to spectrum via optical quartz fiber, the spectrum data will be evaluated and compared with reference data with mathematical approach and gives photolytic rate.

Characteristic Product Monitoring:
AQMS-300 atmospheric ozone analyzer uses UV technology to measure gas ozone content, providing data support for photochemical monitoring solution; PAN is a significant representative index of photochemical pollution thus the system adopts GC-ECD principle to identify and quantify the presence of PAN in sample.
Features Of The Scheme
• All-round Monitoring
Covers the whole process monitoring of photochemical precursors, photolysis rate and photochemical characteristic products; can meet the demands of the cause, mechanism and process analysis of photochemical pollution for research institutions and the Environmental Protection Agency.

• Provide Highly Feasible Management and Control Solutions

Quantify local contributions to refine enterprise management and control.


• Authoritative Analysis Method
Cooperate with Peking University to draw EKMA curve based on OBM model and Racm mechanism, which can accurately locate and efficiently reduce emissions; build VOCs online source analysis system based on the PMF model to identify the contribution rate of each industry.
Application Cases
-China National Environmental Monitoring Centre;-The Institute of Urban Environment, Chinese Academy of Sciences;-College of Environmental Sciences and Engineering (Peking University);
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