soil Flashcards
Samples should be large enough to be representative of the site and adequate for the analysis required, typically between 500-____g
1000g.
Common particle sizes are:
Gravel (2-60mm) Sand (0.6-2mm)
Silt (0.006-0.06mm) Clay (<0.002mm)
The purpose of many soil sampling programs is to evaluate the geology and characterize an area. Information gained from such investigations gives the analyst information on what?
pollution migration plume
Parameters must be set out within a soil sampling program, what are these parameters and explain them (7 things)
Pollutants – Types and anticipated levels. Research must be conducted into the methods used within the lab to ensure that sampling protocols do not compromise analytical results.
Depth to collect samples from – This must be established in advance to ensure that no surprises or uncertainty exists for the sampler. Established depths will make certain that data obtained can be adequately compared to each other, comparing common depths.
Sampling equipment – List equipment needed and ensure that it is cleaned, properly prepared, and that it is not forgotten and left behind.
Sample containers – Listing the containers makes certain that only the correct containers are brought along, and that consideration was in place regarding the analytical method.
Number of samples – Outlining the number of samples in the planning stage ensures that a sufficient number are collected, and that no unnecessary samples are collected.
Identify analytical parameters:
o Describe soil.
o List required field analysis.
o Identify sampling approach.
o Identify physical boundaries of sampling area. o Determine lateral extent and depth of site.
Identify preservation and sample storage.
What does soil sampling equipment choice depend on?
Equipment choice depends on the migration patterns of the analytes.
Sampling analytes dictates what 4 things?
depth, sampling device, construction and choice of materials within the sampling device.
