简介:2.1 A sample of soil or other solid material is carefully collected with minimal disturbance
that could cause loss of volatile constituents. Sample collection may be accomplished using a
modified plastic syringe or com简介:2.1 A sample of soil or other solid material is carefully collected with minimal disturbance
that could cause loss of volatile constituents. Sample collection may be accomplished using a
modified plastic syringe or commercially-available coring devices intended for this purpose.
2.2 The sample plug is immediately extruded into a glass vial containing organic-free
reagent water. The vial is immediately covered with aluminum foil and a modified septum cap.
2.3 The sealed vial containing the sample is hand-shaken for 10-15 seconds and the
sample is visually examined to ensure that complete dispersion of the sample in the water has
occurred.详细>