It is essential to consider some important applications of continuous analysis in environmental monitoring. Environmental pollution analysis is based upon the analysis of a large number of samples with varying complexity. Due to periodic variation in the composition of water or air, this task is very difficult. Due to the greenhouse effect, ozone layer depletion, acid rain, and global warming, environmental monitoring are very essential. It provides the necessary remedies which help to provide a better environment for living organisms.
Water quality monitoring
For water pollution analysis, the exact determination of dissolved oxygen (DO) is most important in finding the biological oxygen demand (BOD) of water. Biological oxygen demand is an indicator of organic and microbiological contamination of water. Almost all monitoring is the part of the environment which study under extensive and poorly planned monitoring carries a risk of damage to the environment. Dissolved oxygen monitoring coupled with the measurement of ph scale and conductivity. Generally, we used a continuous on-stream analyzer for monitoring dissolved oxygen in water filtration plants or industrial operations involving the recycling of waste-water.
Air quality monitoring
Air quality monitoring is generally done by flow calorimetry which analysis the gaseous pollutants like sulfur dioxide or nitrogen dioxide by continuous analysis. The machine contains a filter tape coated with light-sensitive materials that move at a continuous speed. The air is sucked by the pump through an air purifier to remove sulfur dioxide and allow it to interact with coated tape to develop color. This is directly fed to a recorder to give the concentration of hydrogen sulfide in the air.
Different types of the technique we used to monitor the air quality of our environment. It helps our citizens, regulatory agencies, and researchers to investigate the quality of air and the effects of air pollution. The air monitoring data used to health consciousness of the living world. One of the benefits of such type of monitoring is how quantitative information can be obtained via measurements of accumulated compounds, representative of the environment from which they came.
Soil pollution monitoring involves the collection or analysis of soil sample quality, constituents, and physical status to determine its fitness for use. It helps to improve the threats and other potential risks to the soil, surrounding environments, animal health, and human health.
Present years come to the advancement in electronics and instrumentation. Therefore, a bright future for online analysis in environmental monitoring. However, it should not be forgotten that better methods to control and abatement of environmental pollution are based upon the availability and selective methods of on-line analysis of or monitoring of environmental pollution.