FR2454095A1 - METHOD AND APPARATUS FOR DETERMINING THE METAL CONTENT PARTICULARLY IN GASEOUS MIXTURES - Google Patents

METHOD AND APPARATUS FOR DETERMINING THE METAL CONTENT PARTICULARLY IN GASEOUS MIXTURES

Info

Publication number
FR2454095A1
FR2454095A1 FR8008198A FR8008198A FR2454095A1 FR 2454095 A1 FR2454095 A1 FR 2454095A1 FR 8008198 A FR8008198 A FR 8008198A FR 8008198 A FR8008198 A FR 8008198A FR 2454095 A1 FR2454095 A1 FR 2454095A1
Authority
FR
France
Prior art keywords
determining
cavity
gaseous mixtures
particles
metal content
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.)
Pending
Application number
FR8008198A
Other languages
French (fr)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nuovo Pignone SpA
Original Assignee
Nuovo Pignone SpA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from IT02113/79A external-priority patent/IT1165827B/en
Priority claimed from IT8002108A external-priority patent/IT8002108A0/en
Application filed by Nuovo Pignone SpA filed Critical Nuovo Pignone SpA
Publication of FR2454095A1 publication Critical patent/FR2454095A1/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/0004—Gaseous mixtures, e.g. polluted air
    • G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
    • G01N33/0011—Sample conditioning
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
    • G01N21/71—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light thermally excited
    • G01N21/74—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light thermally excited using flameless atomising, e.g. graphite furnaces

Abstract

PROCEDE ET APPAREIL POUR DETERMINER LES TENEURS EN METAL PARTICULIEREMENT DANS DES MELANGES GAZEUX. LE PROCEDE DECRIT DANS L'INVENTION CONSISTE A FAIRE PASSER LE GAZ A ANALYSER DANS UNE CAVITE 5 OU EST LOGE UN CONDUCTEUR ELECTRIQUE 3 CENTRAL PARCOURU PAR UN COURANT CONTINU POUR OBTENIR UNE GRANDE DIFFERENCE DE POTENTIEL ENTRE LE CONDUCTEUR 3 ET LA CAVITE 5, A RECUEILLIR LES PARTICULES SUR LES PAROIS DE LA CAVITE 5 PAR ACTION DU CHAMP ELECTROSTATIQUE CREE, A PORTER LA CAVITE 5 A UNE TEMPERATURE ELEVEE POUR VAPORISER LESDITES PARTICULES, ET A DOSER LA MATIERE VAPORISEE PAR UN PROCEDE D'ABSORPTION ATOMIQUE ELECTROTHERMIQUE. UTILISATION DE CE PROCEDE POUR DOSER DES PARTICULES METALLIQUES EN SUSPENSION DANS L'ATMOSPHERE PAR EXEMPLE.METHOD AND APPARATUS FOR DETERMINING THE METAL CONTENTS, ESPECIALLY IN GASEOUS MIXTURES. THE PROCESS DESCRIBED IN THE INVENTION CONSISTS OF PASSING THE GAS TO BE ANALYZED IN A CAVITY 5 WHERE A CENTRAL ELECTRIC CONDUCTOR 3 IS HOSTED BY A DIRECT CURRENT TO OBTAIN A BIG DIFFERENCE IN POTENTIAL BETWEEN CONDUCTOR 3 AND CAVITY 5, TO BE COLLECTED THE PARTICLES ON THE WALLS OF THE CAVITY 5 BY ACTION OF THE ELECTROSTATIC FIELD CREATED, TO BRING THE CAVITY 5 TO A HIGH TEMPERATURE TO VAPORIZE THE SAID PARTICLES, AND TO MEASURE THE MATERIAL VAPORIZED BY A PROCESS OF ATOMIC ELECTROTHERMAL ABSORPTION. USE OF THIS PROCESS FOR DETERMINING METAL PARTICLES IN SUSPENSION IN THE ATMOSPHERE FOR EXAMPLE.

FR8008198A 1979-04-12 1980-04-11 METHOD AND APPARATUS FOR DETERMINING THE METAL CONTENT PARTICULARLY IN GASEOUS MIXTURES Pending FR2454095A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT02113/79A IT1165827B (en) 1979-04-12 1979-04-12 APPARATUS FOR DETERMINING VARIOUS METALS IN THE ATMOSPHERIC PULVISCLE
IT8002108A IT8002108A0 (en) 1980-02-14 1980-02-14 METHOD AND EQUIPMENT FOR THE DETERMINATION OF METALS DISPERSED IN GAS

Publications (1)

Publication Number Publication Date
FR2454095A1 true FR2454095A1 (en) 1980-11-07

Family

ID=26325214

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8008198A Pending FR2454095A1 (en) 1979-04-12 1980-04-11 METHOD AND APPARATUS FOR DETERMINING THE METAL CONTENT PARTICULARLY IN GASEOUS MIXTURES

Country Status (7)

Country Link
AU (1) AU5740780A (en)
DE (1) DE3014025A1 (en)
DK (1) DK156880A (en)
FR (1) FR2454095A1 (en)
GB (1) GB2048471A (en)
LU (1) LU82356A1 (en)
NL (1) NL8002159A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6897070B2 (en) 1999-09-01 2005-05-24 Micron Technology, Inc. Detection of gas phase materials
US6479297B1 (en) * 2000-08-31 2002-11-12 Micron Technology, Inc. Sensor devices, methods and systems for detecting gas phase materials

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2307602A (en) * 1938-10-20 1943-01-05 Westinghouse Electric & Mfg Co Electrostatic dust sampler
US2857978A (en) * 1954-07-28 1958-10-28 Vladimir J Lenger Electroprecipitator
US3778162A (en) * 1972-03-24 1973-12-11 Continental Oil Co Apparatus for the collection and measurement of the amount of mercury vapors present in a volume of air or other gases

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2307602A (en) * 1938-10-20 1943-01-05 Westinghouse Electric & Mfg Co Electrostatic dust sampler
US2857978A (en) * 1954-07-28 1958-10-28 Vladimir J Lenger Electroprecipitator
US3778162A (en) * 1972-03-24 1973-12-11 Continental Oil Co Apparatus for the collection and measurement of the amount of mercury vapors present in a volume of air or other gases

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
EXBK/73 *

Also Published As

Publication number Publication date
DK156880A (en) 1980-10-13
GB2048471A (en) 1980-12-10
AU5740780A (en) 1980-10-16
NL8002159A (en) 1980-10-14
LU82356A1 (en) 1980-12-16
DE3014025A1 (en) 1980-10-23

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