การเก็บและเตรียมตัวอย่างสุ่มเก็บตัว

Sample preparation and storageSoil samples collected from inside the campus of Kasetsart University 30/24, for example, at a depth of 20 cm, with each point collected, for example, there must be a people lived quite a lot. After that, take samples of soil collected from dried Schmidt came out, sited at 50. 24-hour dry time degrees until completely get rid of the debris and grass roots that are pending, and then to bring Ron with mesh size 2 mm, so that, for example, the Earth has a similar size. And then go to service container contained Nelly beaker (Marinelli beaker) size: 500 ml, which is the same size standard substance that is used to detect. You'll also need to make a sealed plastic container that holds soil samples with adhesive tape to prevent radon gas liberation-woven Ron and then to keep it for a period of at least 1 month to achieve homeostasis through the radioactive soil samples.

Collection and preparation of
soil samples were collected from within Kasetsart University, a total of 30 samples at a depth of 20 cm at each sampling point must be quite a lot of areas where people live. After the soil samples collected to reprogram all dried at a temperature of 50 degrees for 24 hours until dry removal of roots and grass stuck. Then the 2 mm sieve size, so that the soil samples are similar. Then packed into a container Mario McNally beaker (Marinelli beaker), 500 ml, which is the same size as the standard compound used in the detection. It must also be sealed plastic container containing the soil samples with tape to prevent the release of radon gas - piping hot. And then stored for a period of at least one month to achieve equilibrium in the radioactive soil samples.

Collection and preparation of samples
.Random soil samples were collected from areas within the university campus of 30 bangkhen sample depth 20 cm. At each sampling point must be the people lived quite a lot.Degrees for 24 hours. Dry grass roots of scrap and get stuck. The riddle 2 millimeter size to the sediment size nearby. And packaged Mari Nelly beaker (Marinelli beaker) size 500.Also to the sealed plastic container used to contain the soil samples with adhesive tape to prevent the release of radon gas - woven, Ron. And then stored for a period of at least 1.