EP1704579A2 - Verfahren und vorrichtung zur bestimmung des schmierölgehalts in einem abgasgemisch - Google Patents
Verfahren und vorrichtung zur bestimmung des schmierölgehalts in einem abgasgemischInfo
- Publication number
- EP1704579A2 EP1704579A2 EP05706854A EP05706854A EP1704579A2 EP 1704579 A2 EP1704579 A2 EP 1704579A2 EP 05706854 A EP05706854 A EP 05706854A EP 05706854 A EP05706854 A EP 05706854A EP 1704579 A2 EP1704579 A2 EP 1704579A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- ions
- lubricating oil
- exhaust gas
- mass
- filter
- 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.)
- Ceased
Links
- 239000010687 lubricating oil Substances 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims abstract description 27
- 239000000203 mixture Substances 0.000 title claims abstract description 15
- 150000002500 ions Chemical class 0.000 claims abstract description 56
- 238000005259 measurement Methods 0.000 claims abstract description 26
- 230000005405 multipole Effects 0.000 claims abstract description 11
- 238000001914 filtration Methods 0.000 claims abstract description 4
- 239000003921 oil Substances 0.000 claims description 7
- 239000000314 lubricant Substances 0.000 claims description 4
- 239000000523 sample Substances 0.000 claims description 4
- 239000007789 gas Substances 0.000 description 27
- 238000002485 combustion reaction Methods 0.000 description 7
- 150000002430 hydrocarbons Chemical class 0.000 description 5
- 239000000446 fuel Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 229930195733 hydrocarbon Natural products 0.000 description 3
- 238000001819 mass spectrum Methods 0.000 description 3
- 230000035945 sensitivity Effects 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 125000004432 carbon atom Chemical group C* 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 238000000451 chemical ionisation Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000011045 prefiltration Methods 0.000 description 2
- BBEAQIROQSPTKN-UHFFFAOYSA-N pyrene Chemical compound C1=CC=C2C=CC3=CC=CC4=CC=C1C2=C43 BBEAQIROQSPTKN-UHFFFAOYSA-N 0.000 description 2
- 230000002285 radioactive effect Effects 0.000 description 2
- 229910001868 water Inorganic materials 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- YZCKVEUIGOORGS-NJFSPNSNSA-N Tritium Chemical compound [3H] YZCKVEUIGOORGS-NJFSPNSNSA-N 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- GVEPBJHOBDJJJI-UHFFFAOYSA-N fluoranthrene Natural products C1=CC(C2=CC=CC=C22)=C3C2=CC=CC3=C1 GVEPBJHOBDJJJI-UHFFFAOYSA-N 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 230000005865 ionizing radiation Effects 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 229910052722 tritium Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J49/00—Particle spectrometers or separator tubes
- H01J49/26—Mass spectrometers or separator tubes
- H01J49/34—Dynamic spectrometers
- H01J49/42—Stability-of-path spectrometers, e.g. monopole, quadrupole, multipole, farvitrons
- H01J49/4205—Device types
- H01J49/421—Mass filters, i.e. deviating unwanted ions without trapping
- H01J49/4215—Quadrupole mass filters
-
- 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
- G01N27/64—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 using wave or particle radiation to ionise a gas, e.g. in an ionisation chamber
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2202—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling
Definitions
- the invention relates to a method for determining the lubricating oil content in an exhaust gas mixture comprising the steps of ionizing the molecules in the exhaust gas mixture by means of an ion source, supplying the ions of the exhaust gas mixture to a filter unit designed as a multipole with a connected voltage source, setting a pass band of the filter unit according to a lubricating oil fraction to be measured. on, filtering out ions with a specific mass outside the pass band and supplying the remaining ions to a measuring device and measuring the intensity of the passed ions.
- the invention further relates to a determination device for performing the method with an exhaust gas probe, an ion source, which is connected via a measuring channel with a filter device and a measuring device, the filter device being designed as an electrical multipole with a voltage source connected to it, which is used to generate a potential with a constant and / or alternating component is formed, and has a setting device for determining a pass band according to a lubricating oil fraction to be measured.
- Avoiding or reducing emissions is playing an increasingly important role in the course of increased environmental protection efforts.
- efforts are being made not only to improve the emissions resulting from the combustion process taking place in the engine, but also to remove soiling caused by secondary Stir processes outside the actual combustion of the fuel.
- lubricating oil emissions are of particular importance.
- it is essential to measure and evaluate reduction measures to be able to measure the lubricating oil emissions in the exhaust gas.
- the first group are conventional measurement methods for gravimetric or volumetric determination of oil consumption, in which the lubricant balance in the oil pan is determined.
- the lubricant balance is calculated from the weight difference before and after the engine is running.
- the volumetric determination of the lubricating oil consumption is carried out with the help of measuring rods or level sensors via the oil level in the sump of the crankcase. Surface movements, oil foaming and temperature-related changes in volume make it difficult to evaluate the measurement results.
- a disadvantage is that the entry of fuel and combustion products can lead to the fact that the measured lubricant balance does not correctly represent the lubricating oil consumption. Long measuring times (several hours per operating point), large measuring inaccuracies due to the very low oil consumption are more disadvantageous
- Radioactive markers are very suitable approximately fabrics. The ionizing radiation they emit can be measured with high sensitivity. By substituting the hydrogen atoms of the lubricating oil with tritium, a targeted marking of different fractions of the lubricating oil is made possible. This enables quantitative statements to be made about the consumption of individual fractions in the lubricating oil.
- Non-radioactive markers are e.g. B. sulfur, chlorine or pyrene.
- the concentration of the marking substances in the exhaust gas is determined by means of a suitable measuring device and the concentration of the lubricating oil is calculated therefrom by means of the known mixing ratio.
- US-A-2 939 952 It is further known (US-A-2 939 952) to use a mass spectrometer as the measuring device. It consists of an ion source, a filter device and a detector unit. The filter device is e.g. as electrical
- Executed quadrupole to which a direct and an alternating voltage source is connected, so that a temporally periodic electric field is created in the filter. Due to the field arising in the quadrupole, only ions with a certain specific mass m / e (certain mass / charge ratio) run on stable paths, all others are unstable and are eliminated by the filter. With a certain absolute value ratio of direct voltage to alternating voltage with a fixed frequency and wave form of the alternating voltage, the filter achieves its best selectivity and enables a resolution to an atomic mass unit.
- the use of the mass spectrometer to determine the proportion of lubricating oil in the exhaust gas was proposed at the Powertrain & Fluid Systems Conference in San Diego, USA.
- the high resolution of the mass spectrometer allows the Determine the proportions of various components of the lubricating oil in the exhaust gas depending on their atomic weight. This is used to determine the proportion of certain groups, such as B. to determine the proportion of high-boiling hydrocarbons with masses between 170 to 550 atomic mass units.
- the method thus enables an accurate, finely resolved and fairly quick measurement of individual fractions of the lubricating oil and its proportions in the exhaust gas.
- the invention has for its object to provide a method and an apparatus of the type mentioned, in which or in which the above-mentioned disadvantages are reduced.
- Steps ionizing the molecules in the exhaust gas mixture by means of an ion source supplying the ions of the exhaust gas mixture to a filter unit designed as a multipole with a connected voltage source, setting a pass band of the filter unit according to a lubricating oil fraction to be measured, filtering out ions with a specific mass outside the pass band and feeding the rest Ions to a measuring device and measurement of the intensity of the transmitted ions provided that the determination of the proportion of the lubricating oil fraction to be measured is carried out as a global measurement of the intensity of the ions in one step over the pass band.
- Lubricating oil fraction is understood to mean groups of hydrocarbon compounds in the exhaust gas that originate from the lubricating oil.
- ions are understood to mean ions whose observation enables a representative statement to be made about the content of certain lubricating oil fractions in the exhaust gas. In the mass spectrum, they extend over a certain range of molecular masses (amu).
- a global measurement is understood to mean a measurement that is carried out in one step over the area. So that's it
- a passband of the filter device is a mass range defined by two limit values, ie a range of ions with different specific masses m / e, for which the filter device is permeable.
- the lower limit can be zero and the upper limit can be infinite.
- the essence of the invention lies in the idea of taking a global measurement over the range of significant ions which arise from the desired lubricating oil fractions to be measured instead of many individual measurements with subsequent addition of the individual values.
- the invention achieves this by all of the ions of the most diverse specific mass entering, whose specific mass lies in the set pass band (ie, which lie in the desired pass band), pass through the filter device and at the same time pass the measuring device. direction arrive while the remaining ions are blocked by the filter device. The simultaneous arrival of the passed ions at the measuring device results in a stronger measuring signal and the measuring speed increases.
- the method according to the invention is considerably faster. Assuming a realistic measuring time of 1 ms for a mass spectrometer as is known from the prior art, this means a measuring time of 550 ms, i.e. over half, for a measuring range that extends, for example, from 50 to 500 atomic mass units (amu) Second. Thanks to the method according to the invention, only one measurement needs to be carried out, so the measurement time is only 1 ms. This results in a significantly improved dynamic, which allows measurement in real time.
- the invention can thus advantageously be used to determine the emission behavior of an internal combustion engine. Thanks to it, it is possible to determine the emission behavior in real time based on the crankshaft angle. The phases in the working cycle from which the lubricating oil emissions originate can thus be determined. Such an insight into the processes is not possible in the prior art.
- the higher sensitivity of the invention to low concentrations is due to the following reason.
- the measurement threshold In the case of the discrete step-by-step individual measurement according to the prior art, the measurement threshold must be exceeded for each individual point in the measuring range, otherwise this point is not taken into account.
- all the ions that have passed ie all those whose specific mass is in the pass band
- the filter device is designed as a quadrupole. It enables a sufficiently precise selection with good analytical predictability of its filter characteristics.
- the filter device is preferably actuated with a voltage source, which generates a potential with an equal and an alternating component. It is thus easily achieved that the filter device is selective for a certain mass range. This enables an analytical calculation of the filter characteristics.
- the ratio of the amount of the DC voltage is expedient if the frequency and waveform are preferably fixed
- the filter device is preferably operated as a band-pass filter, but it can also be operated as a high-pass filter - with a equal to zero. It goes without saying that not just one but a plurality of quadrupoles can be provided, which may be integrated into one another.
- the invention further relates to a device according to the features of claim 7 ff. For carrying out the method according to the invention. For explanation, reference is made to the above explanations and the following description of the figures.
- Figure 1 is a perspective view of an apparatus for performing the method according to the invention.
- FIG. 2 shows a perspective view of a filter device
- FIG. 3 shows a schematic view of a quadrupole
- Fig. 5 is a schematic representation of an EI mass spectrum of exhaust gas.
- FIGS. 1 and 2 An embodiment of a device according to the invention is shown schematically in FIGS. 1 and 2. It is explained on the basis of the path that a fluid flow to be analyzed takes through the device. This path is symbolized in Fig. 2 with a winding arrow 9.
- Volatile exhaust gas components such as nitrogen, oxygen, carbon monoxide, carbon dioxide, water and argon.
- Hydrocarbons from the lubricating oil which due to the long-chain hydrocarbon groups of the lubricating oil (up to 36 carbon atoms) also generate ions with a specific mass of> 170 m / e.
- the device provided according to the invention for carrying out the method comprises, as main groups, an ion source device 3, a prefilter 4, a first mass filter 5, a collision cell 6, a second mass filter 7 and a detector device 8. It is connected to an exhaust gas probe 2 Exhaust system of an internal combustion engine, not shown, to determine lubricating oil emissions in the exhaust gas. The arrangement is explained in more detail below:
- Exhaust gas emitted from the internal combustion engine 1 (exemplarily shown is a cylinder of the engine with piston 11, valve 12, combustion chamber 13 and exhaust manifold 14) (see beginning of arrow 9) is turned into an end face via the exhaust gas probe 2 with head 22 and a flexible transfer capillary 21 a skimmer unit 25 out.
- the flexible transfer capillary 21 passes through the skimmer unit 23 and opens into a connection head 25 arranged on its opposite end face.
- the ion source device 3 is designed in such a way that the exhaust gas stream flowing through the flexible transfer capillary 21 is ionized.
- the ion source device is preferably set up so that it can work in different operating modes.
- a first mode of operation is electron impact ionization (EI) and the second mode is chemical ionization (chemical ionization CI).
- the prefilter 4 is then arranged immediately in the flow direction of the exhaust gas stream 9. It is designed as a hexapole and is used to transfer the ions from the ion source into the high vacuum region of the mass filters 5, 7.
- the mass filters 5, 7 are designed as quadrupole filters. They are used to filter out ions of unwanted components. For example, to measure the lubricating oil content, the mass filters are set so that ions from substances not belonging to the lubricating oil (mainly those with a specific mass smaller than 170 amu) are separated out.
- the structure of quadrupole filters in general is known from the prior art and need not be explained in more detail here. Above all, the following is important:
- the quadrupole filter consists of at least one set of four rod-shaped electrodes 51, which extend parallel to one another in the x direction (see FIG.
- the e- A voltage source 52 is connected in pairs. It has a DC and an AC voltage module 53 and 54, respectively.
- the voltage output by the DC voltage module 53 is U0 and the voltage output by the AC voltage module 54 is V * cos ( ⁇ * t).
- the voltage source 52 is used to apply time-variable potentials of the type U0 + V * cos ( ⁇ * t). This creates a field that is cylindrically symmetrical about the x-axis according to the following relationship:
- the quadrupole thus works as a filter for a given field.
- the voltage source 52 is provided for the predetermined generation of the field. It comprises two adjusting devices 55 and 56.
- the adjusting device 55 serves to set the level of the DC voltage amplitude
- the adjusting device 56 serves to adjust the level of the AC voltage amplitude.
- the behavior of the quadrupole filter as a mass filter 5 can be set with the aid of the adjusting devices 55 and 56. Different operating modes can be set.
- the two limit devices 55, 56 are used to set the lower limit q1 or the upper limit q2 of the mass range which the mass filter 5 is intended to pass (see FIG. 4).
- the mass range of ions that pass through the quadrupole on a stable orbit is determined by the upper limit
- the sole (lower) limit value mRF is set with the control devices.
- the parameter a 0 is selected, i. H. the
- the detector device 8 is arranged in the flow direction behind the mass filters 5, 7. It is designed to measure the ion current flowing in through the mass filters 5, 7. It detects all incoming ions at the same time. The measured values are transmitted to a suitable storage and output device, such as a PC. The fact that ions of different masses are detected at the same time results in a significantly increased signal.
Landscapes
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (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)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004001514A DE102004001514A1 (de) | 2004-01-09 | 2004-01-09 | Verfahren und Vorrichtung zur Bestimmung des Schmierölgehalts in einem Abgasgemisch |
PCT/EP2005/000140 WO2005066605A2 (de) | 2004-01-09 | 2005-01-10 | Verfahren und vorrichtung zur bestimmung des schmierölgehalts in einem abgasgemisch |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1704579A2 true EP1704579A2 (de) | 2006-09-27 |
Family
ID=34716425
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05706854A Ceased EP1704579A2 (de) | 2004-01-09 | 2005-01-10 | Verfahren und vorrichtung zur bestimmung des schmierölgehalts in einem abgasgemisch |
Country Status (5)
Country | Link |
---|---|
US (1) | US7902497B2 (de) |
EP (1) | EP1704579A2 (de) |
JP (1) | JP4863883B2 (de) |
DE (1) | DE102004001514A1 (de) |
WO (1) | WO2005066605A2 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108776167A (zh) * | 2018-06-12 | 2018-11-09 | 福建出入境检验检疫局检验检疫技术中心 | 一种植物油鉴别方法 |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2056333B1 (de) | 2007-10-29 | 2016-08-24 | ION-TOF Technologies GmbH | Flüssigmetallionenquelle, Sekundärionenmassenspektrometer, sekundärionenmassenspektrometisches Analyseverfahren sowie deren Verwendungen |
US20100188659A1 (en) * | 2009-01-29 | 2010-07-29 | Valery Shver | In-situ devices, systems, and methods for gas species measurement |
EP2399010B1 (de) | 2009-02-17 | 2016-11-23 | Joachim Vogt | Vorrichtung zur fluidmengenmessung in antrieben und geräten |
DE102009020360A1 (de) | 2009-04-30 | 2010-11-04 | Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr | Vorrichtung und Verfahren zur Bestimmung des Schmierölgehaltes in einem Abgasgemisch |
DE102010012606A1 (de) | 2010-03-24 | 2011-09-29 | Tutech Innovation Gmbh | Analyseeinrichtung für Abgase, insbesondere von Verbrennungsmotoren |
DE202013005959U1 (de) | 2013-07-03 | 2014-10-06 | Manfred Gohl | Bestimmungsvorrichtung für Kohlenwasserstoff-Emissionen von Motoren |
DE102013218930A1 (de) * | 2013-09-20 | 2015-04-16 | Lubrisense Gmbh | Mehrfach-Ölemissionsmessgerät für Motoren |
US9086398B1 (en) * | 2014-01-21 | 2015-07-21 | Caterpillar Inc. | Engine exhaust gas sampling for mass spectrometer real time oil consumption measurement |
JP7064378B2 (ja) * | 2018-05-21 | 2022-05-10 | 株式会社Subaru | 排ガス分析方法及び排ガス分析システム |
Family Cites Families (9)
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IT528250A (de) | 1953-12-24 | |||
US5107109A (en) * | 1986-03-07 | 1992-04-21 | Finnigan Corporation | Method of increasing the dynamic range and sensitivity of a quadrupole ion trap mass spectrometer |
US4771172A (en) * | 1987-05-22 | 1988-09-13 | Finnigan Corporation | Method of increasing the dynamic range and sensitivity of a quadrupole ion trap mass spectrometer operating in the chemical ionization mode |
JPH036451A (ja) * | 1989-06-02 | 1991-01-11 | Mazda Motor Corp | エンジンのガス分析装置 |
US5420425A (en) | 1994-05-27 | 1995-05-30 | Finnigan Corporation | Ion trap mass spectrometer system and method |
JPH1164282A (ja) * | 1997-08-19 | 1999-03-05 | Hitachi Ltd | 質量分析装置の調整方法 |
JP3386048B2 (ja) * | 2000-12-14 | 2003-03-10 | 株式会社島津製作所 | イオントラップ型質量分析装置 |
AU2002322895A1 (en) * | 2001-08-30 | 2003-03-10 | Mds Inc., Doing Busness As Mds Sciex | A method of reducing space charge in a linear ion trap mass spectrometer |
FR2892818B1 (fr) * | 2005-11-03 | 2008-10-24 | Renault Sas | Procede de determination de la teneur en gazole dans une huile lubrifiante de moteur a combustion |
-
2004
- 2004-01-09 DE DE102004001514A patent/DE102004001514A1/de not_active Ceased
-
2005
- 2005-01-10 WO PCT/EP2005/000140 patent/WO2005066605A2/de active Application Filing
- 2005-01-10 US US10/584,926 patent/US7902497B2/en active Active
- 2005-01-10 JP JP2006548240A patent/JP4863883B2/ja active Active
- 2005-01-10 EP EP05706854A patent/EP1704579A2/de not_active Ceased
Non-Patent Citations (4)
Title |
---|
MARK D. PERKINS ET AL: "First mass spectrometric measurements of atmospheric ions at ground level", JOURNAL OF GEOPHYSICAL RESEARCH, vol. 89, no. D6, 1 January 1984 (1984-01-01), US, pages 9649 - 9657, XP055412879, ISSN: 0148-0227, DOI: 10.1029/JD089iD06p09649 * |
MILLER P E ET AL: "The transmission properties of an RF-only quadrupole mass filter", INTERNATIONAL JOURNAL OF MASS SPECTROMETRY AND ION PROCESSES, ELSEVIER SCIENTIFIC PUBLISHING CO. AMSTERDAM, NL, vol. 72, no. 3, 29 October 1986 (1986-10-29), pages 223 - 238, XP026507855, ISSN: 0168-1176, [retrieved on 19861029], DOI: 10.1016/0168-1176(86)80021-0 * |
P. H DAWSON: "Quadrupole mass analyzers: Performance, design and some recent applications", MASS SPECTROMETRY REVIEWS., vol. 5, no. 1, 1 January 1986 (1986-01-01), US, pages 1 - 37, XP055346009, ISSN: 0277-7037, DOI: 10.1002/mas.1280050102 * |
P. SCHULTE ET AL: "Detection of upper atmospheric negatively charged microclusters by a rocket-borne mass spectrometer", GEOPHYSICAL RESEARCH LETTERS, vol. 19, no. 23, 2 December 1992 (1992-12-02), United States, pages 2297 - 2300, XP055412961, ISSN: 0094-8276, DOI: 10.1029/92GL02631 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108776167A (zh) * | 2018-06-12 | 2018-11-09 | 福建出入境检验检疫局检验检疫技术中心 | 一种植物油鉴别方法 |
Also Published As
Publication number | Publication date |
---|---|
JP4863883B2 (ja) | 2012-01-25 |
US20080210855A1 (en) | 2008-09-04 |
JP2007518085A (ja) | 2007-07-05 |
WO2005066605A3 (de) | 2005-12-01 |
WO2005066605A2 (de) | 2005-07-21 |
US7902497B2 (en) | 2011-03-08 |
DE102004001514A1 (de) | 2005-08-04 |
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