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US 2026/0235479 A1Published application
Tube for volatile and semi-volatile compound sampling and sampling process
AssigneeVsol AnáLises Ambientais Ltda
InventorRafael Fernando SATO SATO
Life of this patent
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Abstract
Sampling system equipped with a tube with a hydrophobic adsorbent element of hybrid category for passive or active sampling of volatile and semi-volatile compounds for investigations of environmental contamination or for prospecting sources of natural resources such as oil in its various forms and its sampling process.
Claims3
SAMPLING TUBE characterized by its components:
- tube (1) of metallic, glassy or polymeric material, rigid and inert, in which its external surface has engravings of an arrow (3) and tube serial number (4);
- two caps, preferably in polyethylene (5), with a hydrophobic and olephobic membrane (13), composed of polytetrafluoroethylene (PTFE) or acrylic copolymers;
- internally it is composed of a mixture of hydrophobic activated carbon spheres (2) of different sizes, from 0.4 to 0.8 mm and surface area from 1000 to 1300 m2/g, fixed in metallic and vitreous fabrics (6);
- two retainer springs (7).
1 more element
PROCESS characterized by its steps:
- i. Remove the cap of the sampler tube part (1) to where the arrow (3) points;
- ii. Connect the sampler tube (1) to the syringe (8);
- iii. Remove the cap (5) still remaining from the sampler tube (1) and connect to the sampling point;
- iv. Pull and push the syringe plunger according to the volume to be sampled;
- v. Disconnect the sampler tube (1);
- vi. Replace the caps (5).
3 more elements
PROCESS characterized by its steps:
- A. Remove the cap from the counter sampler tube part (1) to where the flow arrow (3) points;
- B. Connect the sampler tube (1) to the sampling cap set (10).
- C. Position the sampler at the location to be sampled.
- D. After the sampling period, remove the sampler;
- E. Replace cap (5)
2 more elements
Dependencies are inferred from the claim text.