The importance of collecting original ecological water quality samples

The importance of collecting original ecological water quality samples

The concept of original ecological water quality sample here means that the hydrological state of the environmental water body remains unchanged at that time for collection. It is equivalent to sending the sample of environmental water to the laboratory.

We in China bring the moon soil from the moon back to earth, should also be original ecological sample collection, untouched transfer to the laboratory. It is not usually made like a compressed biscuit, even if you can bring more samples back after compression. See how important the significance of original ecological samples is.

Environmental monitoring pays attention to the level of confidence. We usually say in our mouth that the level of confidence reaches 95%. What does that mean? It means only confidence level ≧95% is trustworthy, so there are various quality control tests, but the method of sample collection is less than 95% confidence level? According to the folk saying, "Everything who does not love for the purpose of marriage" is the saying of rogue. All tests that do not measure confidence are suspected of faking data.

Therefore, the whole process of the whole project test is from sampling, including the collection of original ecological water samples.

In fact, this is a subversive topic, from ancient to the world for the collection of water samples, the use of pumping (i.e..The two methods of extraction) and filling are very convenient, but it has a huge defect, namely, "destroying the hydrological state of the environmental water body at that time," which is very important and is obviously not suitable for collecting non-uniform samples, such as oil, plankton, bacteria and virus in water. The test results are not scientific and the confidence level is very low.

Both extraction and filling have selectivity, which is generally recognized. The water treatment industry often makes use of such selectivity, such as selective extraction of parts with high sludge content during river dredging.

DR-801 C intercepted water oil stratification sampler is also a original ecological water sampling device, patent product, vertical to the water surface from top to bottom static intercepted target water water column, can easily complete parallel double sample, standard recovery rate of water sample collection, monitoring, have not dreamed of the things, now there is DR-801 C added to do nothing, it is a universal sampler, but no pumping (extraction), filling action, to retain the environmental water water at the time of the hydrological state.

Its significance is that it changes the traditional sampling theory and fundamentally solves the problem of liquid non-uniform sample measurement.