What is on-site determination of water quality. Compared to traditional laboratory analysis, on-site assays provide immediate data, which is essential for rapid response in emergency situations. On-site assay equipment is typically designed to be portable, simple to use, and capable of providing accurate results without laboratory conditions.
So, what are the key indicators of on-site water quality measurement? Here are a few main parameters:
1. pH value: pH value is an indicator to measure the pH of water, which is essential for the health of the ecosystem. Abnormal pH levels can cause stress to aquatic life and even lead to death. On-site pH measurement can help us quickly identify potential sources of acid or alkali contamination.
2. Dissolved oxygen (DO): Dissolved oxygen refers to the amount of oxygen dissolved in water, which is an important indicator to evaluate the self-purification ability of water and the living environment of aquatic organisms. Low dissolved oxygen levels may cause a lack of oxygen in the water body, which can affect the survival of fish and other aquatic organisms.
3. Conductivity: Conductivity reflects the total amount of dissolved salts in the water, which is directly related to the purity of the water. High conductivity may indicate that the water contains a large amount of dissolved solids, which can be caused by industrial wastewater or agricultural drainage.
4. Turbidity: Turbidity refers to the concentration of suspended solids in water, which will affect the transparency of water. High turbidity not only affects the aesthetics of the water, but can also shade sunlight and affect the photosynthesis of underwater plants.
5. Ammonia nitrogen: Ammonia nitrogen is the content of ammonia in the water body, which is usually used in agricultural drainage and domestic sewage. High levels of ammonia nitrogen can lead to eutrophication of water bodies, triggering algae blooms, consuming large amounts of dissolved oxygen, and causing hypoxia in water bodies.
6. Chemical oxygen demand (COD) and biological oxygen demand (BOD): These two indicators reflect the amount of oxygen required by chemicals and microorganisms to decompose organic matter in water, respectively. They are an important indicator to assess the degree of organic pollution in a water body.
7. Heavy metals: The determination of heavy metals such as lead, mercury, arsenic and other heavy metals is essential to assess the degree of industrial discharge and water pollution. The accumulation of heavy metals in living organisms can pose a serious threat to human health.
The on-site measurement of these indicators not only provides immediate data for environmental monitors, but also helps us better understand the health of water bodies, identify problems and take action in a timely manner. For example, in the event of a sudden river pollution incident, rapid on-site measurement can help determine the type and concentration of pollutants and guide emergency response efforts.