Sampling items required for sampling preparation, sampling items required for sampling preparation (on-site collection information record form (indoor air), pen, label paper, filter cartridge, filter membrane, absorption liquid, sampling box) and other related items. When collecting pollution sources, the site description records and working condition description records of pollution source monitoring should be prepared and filled in completely.

Sampling personnel are generally composed of two people and accept sampling tasks (orders). Newcomers should do a good job of pre-sampling, prepare relevant equipment and instruments for the project, fill in the use record of outgoing equipment, and check whether the items in the instrument accessory box used for the project are complete.

Extended data:

Precautions:

Don't stir the sediment at the bottom of the water when sampling. When collecting and measuring water samples of oil, do not flush the sampling bottle (device) with water samples. At the same time, collect columnar water samples from the water surface to 300mm below the water surface, and the water samples will be filled with sampling bottles, all of which will be used for determination.

When collecting and measuring dissolved oxygen, biochemical oxygen demand and organic water samples, the container should be filled with water samples, leaving no gap at the upper part and adopting water seal.

A water sample containing precipitable solids (such as sediments). ) should be separated and removed. The separation method is as follows: shake the collected water sample evenly, pour it into a cylindrical glass container (such as a measuring cylinder), let it stand for 30 minutes, move the water sample containing suspended solids but not precipitated solids into the sampling container, and add preservatives. Except for water samples used to determine total suspended solids and oil.

Baidu encyclopedia-environmental sampling