Passive type emission flux sampler and flux measuring apparatus

• US 20070190655A1
• Filed: 10/08/2004
• Published: 08/16/2007
• Est. Priority Date: 01/09/2004
• Status: Abandoned Application

• Current Assignee: IMAI Corp., Yukio Yanagisawa
• Original Assignee: Fukuwauchi Technologies Inc., Yukio Yanagisawa
• Inventors: Uchi, Tomio, Yanagisawa, Yukio, Kumagai, Kazukiyo, Cai, Shaobu, Fuji, Minoru
• Application Number:
  US10/597,041
• Publication Number:
  US 20070190655A1
• Time in Patent Office: Days
• US Class Current: 436/38
• CPC Class Codes: G01N 1/2226 Sampling from a closed space, e.g. food package, head space
• CPC Class Codes: G01N 2001/2241 purpose-built sampling enclosure for emissions
• CPC Class Codes: G01N 31/22 using chemical indicators G01N31/02 takes precedence
• CPC Class Codes: G01N 7/14 by allowing the material to emit a gas or vapour, e.g. water vapour, and measuring a pressure or volume difference determining urea G01N33/48742

Abstract

To enable simple and accurate measurement for the flow rate (emission flux) of a chemical substance released from a site to be measured such as a floor surface, ceiling, wall surface, or furniture with no effect of external air (air in the room). [Means for Solution]

An opening 14 for taking in a chemical substance released from an inspection object (13) into the casing (12) is formed to the bottom surface (12a) of a hollow casing (12) to be bonded to the inspection object (13), a test specimen (15) that takes place color change reaction with the chemical substance under a humid circumstance is disposed to the inner surface of the casing (12) being opposed to the opening (14), and a transparent observing section (12a) is formed to the casing (12) for observing the color change of the test specimen (15) from the outside while bonding the inspection object (13) as it is.

Claims

1-16. -16. (canceled)

17. A passive type emission flux sampler for measuring an emission flux of a specified chemical sample released from an inspection object, comprising:

a hollow casing comprising an inner surface and a bottom surface opposite the inner surface in which an opening is formed for taking in a chemical substance released from the inspection object; and

an adhesive layer formed at a periphery of the opening and configured to bond the bottom surface to a surface of the inspection object,

wherein the inner surface is configured to receive a test specimen that changes color in a reaction with the chemical substance.

18. A passive type emission flux sampler according to claim 17,

wherein the inner surface comprises a transparent observing section for observing the color change of the test specimen from the outside.

19. A passive type emission flux sampler according to claim 17,

wherein the casing has a gas barrier property.

20. A passive type emission flux sampler according to claim 17,

wherein a gas barrier film is formed to at least one of the inner surface and an outer surface of the casing to provide the casing with a gas barrier property.

21. A passive type emission flux sampler according to claim 17, further comprising:

a water retaining material disposed in the casing for maintaining the test specimen in a humid condition.

22. A passive type emission flux sampler according to claim 17, further comprising:

an annular rib extending from an end edge of the opening to inside the casing.

23. A passive type emission flux sampler according to claim 17,

wherein an air permeable spacer of a predetermined thickness is configured to ensure a predetermined distance between the opening and the test specimen.

25. A passive type emission flux sampler according to claim 19,

wherein a gas barrier film is formed to at least one of the inner surface and an outer surface of the casing to provide the casing with a gas barrier property.

26. A passive type emission flux sampler according to claim 18, further comprising:

a water retaining material disposed in the casing for maintaining the test specimen in a humid condition.

27. A passive type emission flux sampler according to claim 19, further comprising:

a water retaining material disposed in the casing for maintaining the test specimen in a humid condition.

28. A passive type emission flux sampler according to claim 18, further comprising:

an annular rib extending from an end edge of the opening to inside the casing.

29. A passive type emission flux sampler according to claim 19, further comprising:

an annular rib extending from an end edge of the opening to inside the casing.

30. A passive type emission flux sampler according to claim 18,

wherein an air permeable spacer of a predetermined thickness is configured to ensure a predetermined distance between the opening and the test specimen.

31. A passive type emission flux sampler according to claim 19,

wherein an air permeable spacer of a predetermined thickness is configured to ensure a predetermined distance between the opening and the test specimen.

32. A passive type emission flux sampler according to claim 17,

wherein a flange is formed to an outer peripheral edge of the casing.

33. A passive type emission flux sampler according to claim 17,

wherein the adhesive layer is configured to bond to an aluminum sheet to seal the opening.

24. A measuring apparatus for measuring emission flux of a passive type flux sampler, comprising:

a hollow casing comprising an inner surface having a transparent observing section and a bottom surface opposite the inner surface in which an opening is formed for taking in a chemical substance released from an inspection object, and an adhesive layer formed at a periphery of the opening and configured to bond the bottom surface to a surface of the inspection object, wherein the inner surface is configured to receive a test specimen that changes color in a reaction with the chemical substance,

a light shielding chamber formed with a setting stage for positioning the flux sampler for a predetermined time;

a light source provided to the light shielding chamber for irradiating a measuring light to the test specimen through at least one of the opening and the observing section,

an optical sensor configured to detect the intensity of a reflection light from the test specimen, and

a calculation processor configured to calculate the emission flux based on the intensity of reflection light detected by the optical sensor.