GB2443110A - Instruments for measuring nanoparticle exposure - Google Patents
Instruments for measuring nanoparticle exposureInfo
- Publication number
- GB2443110A GB2443110A GB0725151A GB0725151A GB2443110A GB 2443110 A GB2443110 A GB 2443110A GB 0725151 A GB0725151 A GB 0725151A GB 0725151 A GB0725151 A GB 0725151A GB 2443110 A GB2443110 A GB 2443110A
- Authority
- GB
- United Kingdom
- Prior art keywords
- aerosol
- ions
- instrument
- corona discharge
- charged particles
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 239000002105 nanoparticle Substances 0.000 title abstract 3
- 239000000443 aerosol Substances 0.000 abstract 3
- 150000002500 ions Chemical class 0.000 abstract 3
- 239000002245 particle Substances 0.000 abstract 3
- 238000005040 ion trap Methods 0.000 abstract 2
- 230000008021 deposition Effects 0.000 abstract 1
- 238000009792 diffusion process Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 abstract 1
- 230000037230 mobility Effects 0.000 abstract 1
- 210000002345 respiratory system Anatomy 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/62—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosols; by investigating electric discharges, e.g. emission of cathode
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
- Sampling And Sample Adjustment (AREA)
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
Abstract
An instrument for non-invasively measuring nanoparticle exposure includes a corona discharge element generating ions to effect unipolar diffusion charging of an aerosol, followed by an ion trap for removing excess ions and a portion of the charged particles with electrical mobilities above a threshold. Downstream, an electrically conductive HEPA filter or other collecting element accumulates the charged particles and provides the resultant current to an electrometer amplifier. The instrument is tunable to alter the electrometer amplifier output toward closer correspondence with a selected function describing particle behavior, e.g. nanoparticle deposition in a selected region of the respiratory system. Tuning entails adjusting voltages applied to one or more of the ion trap, the corona discharge element and the collecting element. Alternatively, tuning involves adjusting the aerosol flow rate, either directly or in comparison to the flowrate of a gas conducting the ions toward merger with the aerosol.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US68361505P | 2005-05-23 | 2005-05-23 | |
US7635506A | 2006-01-31 | 2006-01-31 | |
PCT/US2006/020071 WO2006127803A2 (en) | 2005-05-23 | 2006-05-23 | Instruments for measuring nanoparticle exposure |
Publications (2)
Publication Number | Publication Date |
---|---|
GB0725151D0 GB0725151D0 (en) | 2008-01-30 |
GB2443110A true GB2443110A (en) | 2008-04-23 |
Family
ID=39048694
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB0725151A Withdrawn GB2443110A (en) | 2005-05-23 | 2006-05-23 | Instruments for measuring nanoparticle exposure |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB2443110A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11686660B2 (en) | 2018-06-07 | 2023-06-27 | Sensors, Inc. | Particle concentration analyzing system and method |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3114877A (en) * | 1956-10-30 | 1963-12-17 | Gen Electric | Particle detector having improved unipolar charging structure |
US5026994A (en) * | 1990-08-06 | 1991-06-25 | Rad-X Ltd. | Method and apparatus for measuring the size distribution of particles |
US5352892A (en) * | 1992-05-29 | 1994-10-04 | Cornell Research Foundation, Inc. | Atmospheric pressure ion interface for a mass analyzer |
US5973904A (en) * | 1997-10-10 | 1999-10-26 | Regents Of The University Of Minnesota | Particle charging apparatus and method of charging particles |
US6003389A (en) * | 1996-09-05 | 1999-12-21 | California Institute Of Technology | Enhanced automated classified aerosol detector |
US6568245B2 (en) * | 2001-03-15 | 2003-05-27 | Tsi Incorporated | Evaporative electrical detector |
-
2006
- 2006-05-23 GB GB0725151A patent/GB2443110A/en not_active Withdrawn
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3114877A (en) * | 1956-10-30 | 1963-12-17 | Gen Electric | Particle detector having improved unipolar charging structure |
US5026994A (en) * | 1990-08-06 | 1991-06-25 | Rad-X Ltd. | Method and apparatus for measuring the size distribution of particles |
US5352892A (en) * | 1992-05-29 | 1994-10-04 | Cornell Research Foundation, Inc. | Atmospheric pressure ion interface for a mass analyzer |
US6003389A (en) * | 1996-09-05 | 1999-12-21 | California Institute Of Technology | Enhanced automated classified aerosol detector |
US5973904A (en) * | 1997-10-10 | 1999-10-26 | Regents Of The University Of Minnesota | Particle charging apparatus and method of charging particles |
US6568245B2 (en) * | 2001-03-15 | 2003-05-27 | Tsi Incorporated | Evaporative electrical detector |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11686660B2 (en) | 2018-06-07 | 2023-06-27 | Sensors, Inc. | Particle concentration analyzing system and method |
Also Published As
Publication number | Publication date |
---|---|
GB0725151D0 (en) | 2008-01-30 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |