Method for detecting trace substances and/or environmental properties

• US 20020007687A1
• Filed: 09/04/2001
• Published: 01/24/2002
• Est. Priority Date: 03/24/1999
• Status: Abandoned Application

• Current Assignee: Gsf-Forschungszentrum Fur Umwelt Und Gesundheit GmbH
• Original Assignee: Gsf-Forschungszentrum Fur Umwelt Und Gesundheit GmbH
• Inventors: Zimmermann, Ralf, Kettrup, Antonius
• Application Number:
  US09/945,434
• Publication Number:
  US 20020007687A1
• Time in Patent Office: Days
• US Class Current: 73/864.71
• CPC Class Codes: G01N 1/02 Devices for withdrawing samples sampling of foundation soil E02D1/04; collecting or conveying radioactive samples G01T7/00, e.g. G01T7/02, G01T7/08
• CPC Class Codes: G01N 2001/2826 Collecting by adsorption or absorption
• CPC Class Codes: G01N 33/0057 for warfare agents or explosives properties of explosives G01N33/227
• CPC Class Codes: G01N 33/24 Earth materials G01N33/42 takes precedence

Abstract

In a method for detecting trace substances or environmental properties, wherein a collection structure including a collection-active material is layed out following a predetermined pattern, and, after a certain exposure time, the collection structure is reeled in and the collection structure is analyzed in a location-dependent manner, the analysis values are correlated with the layout pattern of the collection structure to establish an analysis value pattern over the area in which the collection structure was layed out.

Claims

1. A method for detecting trace substances or environmental properties, comprising the following steps:

a) laying out in a predetermined pattern a collecting structure which has a certain extension in at least one dimension and which has a predetermined cross-section,

b) retrieving said collecting structure after a certain time of being exposed to the environment including at least one of the air, water and the soil, and

c) analyzing said collection structure in a location dependent manner and correlating the analysis values with the pattern in which said collection structure was layed out.

2. A method according to claim 1, wherein said collection structure is used for a location-dependent adsorption or absorption of trace elements.

3. A method according to claim 1, wherein said collection structure is used as a location-dependent indicator of local environmental properties.

4. A method according to claim 1, wherein the analysis of said collection structure is performed continuously by an automated analysis apparatus, wherein said collection structure is automatically moved through said analysis apparatus.

5. A method according to claim 1, wherein said collection structure is analyzed in sections of said collection structure of a predetermined length and the analysis information of the collection structure is integrated over said predetermined length and correlated to the respective part of the layout pattern of said collection structure.

6. A method according to claim 1, wherein said collection structure consists of a collection active carrier material such as a polymer string, which is coated with at least one layer of at least one collection-active substance.

7. A method according to claim 6, wherein said collection active substance is at least one of silicon, TENAX and activated carbon.

8. A method according to claim 1, wherein said collection structure consists of a collection-inactive support structure such as a steel wire, which is coated with at least one layer of at least one collection-active substance.

9. A method according to claim 8, wherein said collection-active substance is one of silicon, TENAX and activated carbon.

10. A method according to claim 1, wherein said collection structure consists of a collection-active support structure including a core of at least one collection active substance.

11. A method according to claim 1, wherein said collection structure consists of a collection-inactive carrier structure including a core of at least one collection active substance.

12. A method according to claim 1, wherein said collection structure is provided with microorganisms, which are affected by the substance or environmental condition to be detected such that their growth, their dying off or their metabolism products provide for a location based indication for the presence of chemical or physical properties.

13. The use of the method of claim 1 for the detection of explosives or mines.