The layout method of sampling sections for rivers should meet the following requirements: (1) For urban or industrial river sections, control sections, reference sections and reduction sections should be set up. (2) For severely polluted river sectio...
The layout of sampling sections should comply with the following principles: (1) Fully consider the number and distribution of water intake and discharge (return water) outlets in this river section (area), the status of pollutant discharge, hydrolog...
The acceptance monitoring of wastewater from pollution sources should be conducted under stable production conditions, with the production load reaching more than 75% of the designed production capacity. If the national or local discharge standards h...
The quality control of the sampling process runs through the entire sampling process, covering aspects such as the sampling personnel, sampling methods, sampling points, sampling containers, sample preservation and transportation, full-process blanks...
According to the requirements of standards and specifications such as "Technical Specifications for Monitoring of Surface Water and Wastewater" and "Technical Specifications for Monitoring of Total Emission of Pollutants", the principles for the layo...
The basis and prerequisite for formulating the water sampling plan is that the on-site investigation should be as detailed and accurate as possible. Based on the comprehensive on-site investigation, relevant data should be verified. According to the...
The water sampler should have sufficient strength, be flexible, convenient and reliable to use. The parts in contact with the water sample should be made of inert materials such as stainless steel and polytetrafluoroethylene. Before using the sampler...
1. Water quality sampling work Adopt different analytical methods In the process of environmental monitoring work, whether the application of analytical methods is correct will have a direct impact on the scientific accuracy of the final monitoring r...
Wastewater sampling Before sampling, it is necessary to understand the production and treatment process flow, discharge patterns and treatment measures related to the discharged wastewater, so as to formulate a sampling plan, determine the existing i...
Precipitation sampling It is very difficult to accurately collect precipitation samples. Before precipitation, the sampler must be covered and only opened after the actual precipitation occurs. Take water samples throughout the entire process of each...
Groundwater sampling Groundwater quality monitoring usually collects instantaneous water samples. For well water where the water level needs to be measured, the groundwater level should be measured first before sampling. 3. Water samples collected fr...
Surface water sampling 1. The sampling section should have clear markers, and the sampling personnel must not change the sampling position without authorization. When sampling, GPS positioning or fixed markers should be used to determine the sampling...
Environmental monitoring data reflects the true situation of water quality at pollution sources. Sampling of water quality at pollution sources is a very important part of the environment. If the water samples collected by the samplers are not repres...
Before sampling, it is necessary to understand the production and treatment process flow, discharge patterns and treatment measures related to the discharged wastewater, so as to formulate a sampling plan, determine the existing interfering factors a...
It is very difficult to accurately collect precipitation samples. Before precipitation, the sampler must be covered and only opened after the actual precipitation occurs. Take water samples throughout the entire process of each precipitation (from th...
