EP3227674A1 - Microdispositif de détection de composés organiques volatils et méthode de détection d'au moins un composé organique volatil compris dans un échantillon gazeux - Google Patents
Microdispositif de détection de composés organiques volatils et méthode de détection d'au moins un composé organique volatil compris dans un échantillon gazeuxInfo
- Publication number
- EP3227674A1 EP3227674A1 EP15817479.7A EP15817479A EP3227674A1 EP 3227674 A1 EP3227674 A1 EP 3227674A1 EP 15817479 A EP15817479 A EP 15817479A EP 3227674 A1 EP3227674 A1 EP 3227674A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sampling
- compound
- detection
- gas
- detected
- 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- Withdrawn
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/04—Preparation or injection of sample to be analysed
- G01N30/16—Injection
- G01N30/20—Injection using a sampling valve
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/62—Detectors specially adapted therefor
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/88—Integrated analysis systems specially adapted therefor, not covered by a single one of the groups G01N30/04 - G01N30/86
-
- 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
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0036—Specially adapted to detect a particular component
- G01N33/0047—Specially adapted to detect a particular component for organic compounds
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N2030/0095—Separation specially adapted for use outside laboratory, e.g. field sampling, portable equipments
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N2030/022—Column chromatography characterised by the kind of separation mechanism
- G01N2030/025—Gas chromatography
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/04—Preparation or injection of sample to be analysed
- G01N30/06—Preparation
- G01N30/08—Preparation using an enricher
- G01N2030/085—Preparation using an enricher using absorbing precolumn
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/88—Integrated analysis systems specially adapted therefor, not covered by a single one of the groups G01N30/04 - G01N30/86
- G01N2030/8809—Integrated analysis systems specially adapted therefor, not covered by a single one of the groups G01N30/04 - G01N30/86 analysis specially adapted for the sample
- G01N2030/884—Integrated analysis systems specially adapted therefor, not covered by a single one of the groups G01N30/04 - G01N30/86 analysis specially adapted for the sample organic compounds
Definitions
- the present invention relates to the detection of volatile organic compounds. It relates more particularly to a microdevice for detecting volatile organic compounds and a method for detecting at least one volatile organic compound included in a gaseous sample.
- Volatile organic compounds are organic compounds that can easily be in gaseous form in the atmosphere.
- VOCs are a very broad family of products among which we can find the BTEX (Benzene, Toluene, Ethylbenzene, Xylenes), aromatic hydrocarbons, which are classified among the most dangerous.
- BTEX Benzene, Toluene, Ethylbenzene, Xylenes
- aromatic hydrocarbons which are classified among the most dangerous.
- BTEX's emissions come from different sources.
- use may be made of heating appliances such as gas boilers or oil stoves.
- Consumer products such as varnishes and cleaning products are also other significant sources.
- the high dangerousness of these substances leads the legislator to impose threshold values not to be exceeded for the most dangerous substances such as benzene (for example the threshold value will be 5 yg / m 3 for benzene in establishments receiving the public) or to propose precautionary measures by indicating thresholds not to be exceeded for the other BTEXs.
- these detectors are very heavy, take up a lot of space and are therefore difficult to transport.
- they are expensive and have a gas consumption (useful not only in the separation but also in the detection of the compounds to be detected) very important up to 50mL / min for some of them.
- microdevice for detecting volatile compounds having a particular structure makes it possible to meet these requirements.
- a first object of the present invention is therefore a microdevice for the detection of volatile compounds comprising: an entrance and an exit,
- sampling means making it possible to sample a gas volume less than or equal to 100 ml located after the sampling means;
- a gas circulation circuit located downstream of the sampling means and passing through the sampling means, the injection means, the separation means and the detection means,
- the gas flow circuit having a volume of between 0.2 cm 3 and 2 cm 3.
- microdevice means a device of very small size, easily transportable.
- conventional benchtop devices have a footprint of 500dm 3 while according to the invention, the size of the device is only about 25 dm 3 .
- the size of the device is in particular determined by the volume of the gas circulation circuit. This volume is between 0.2 cm 3 and 2 cm 3, preferably between 0.5 cm 3 and 1.5 cm 3, and even more preferably between 0.8 cm 3 and 1, 2 cm 3.
- gas circulation circuit means "gas circulation circuit to be analyzed”.
- the operating conditions are such that the gaseous sample is close to atmospheric pressure, typically between 0.5 and 1.5 bar.
- the volume of the gas circulation circuit is at least 8 to 10 cm 3 .
- the sampling means make it possible to take the sample outside the microdevice in order to introduce it into the injection means.
- sampling line comprising a pumping system that may optionally be associated with an air flow control means.
- the gas circulation circuit is located downstream of the sampling means and passes through the sampling means, the injection means, the separation means and the detection means and also comprises the dead volumes of the different sampling, injection, separation and detection means.
- the gas circulation circuit according to the invention does not include the sampling means.
- the sampling means of the gaseous sample are arranged at the inlet of the microdevice.
- input is meant that the sampling means can be directly contiguous to the input of the microdevice or connected to the input via connection means such as channels, capillaries or small tubes (small diameters).
- the compound detection means which are arranged between the separation means and the output of the microdevice may be directly contiguous to the output of the microdevice or connected to the output via connection means such as channels, capillaries or small tubes (small diameters).
- the detection means allow qualitative and quantitative analysis.
- the gaseous sample is selected from the group consisting of ambient air, a synthetic mixture, a standard gas mixture to be detected, a gaseous mixture in nitrogen, in synthetic air, in the oxygen or in argon.
- the compound to be detected is a volatile organic compound selected from the group consisting of benzene, toluene, ethylbenzene, para-xylene, ortho-xylene, meta-xylene, and the like.
- other unsaturated VOCs namely the other aromatic compounds as well as the alkenes and their mixtures.
- the compound to be detected is a volatile organic compound selected from the group consisting of benzene, toluene, ethylbenzene, para-xylene, ortho-xylene and meta-xylene and their mixtures.
- benzene toluene
- ethylbenzene para-xylene
- ortho-xylene ortho-xylene
- meta-xylene and their mixtures.
- the device comprises sampling means for sampling a gaseous volume less than or equal to 100 ml disposed after the sampling means.
- gas volume sampled can not be zero.
- the sampling means make it possible to sample a volume of between 10 ⁇ L and 100 ⁇ L.
- sampling means there may be mentioned for example a sampling loop.
- the preferably calibrated sampling loop makes it possible to control the sampled gas volume.
- the sampling means are a sampling loop having a volume less than or equal to 100 ml, preferably between 10 yl and 100 ml.
- the device further comprises concentration means such as for example a pre-concentrator such as a trap, preferably microfluidic, containing one or more adsorbents.
- concentration means such as for example a pre-concentrator such as a trap, preferably microfluidic, containing one or more adsorbents.
- the concentration means are arranged between the sampling means and the injection means.
- the device further comprises means for transferring the sampled gas sample to the concentration means. This may be for example a multi-way valve.
- the gas circulation circuit is located downstream of the sampling means and passes through the sampling means, the means for transferring the sampled gas sample to the concentration means, the means for concentration, the injection means, the separation means and the detection means and also comprises the dead volumes of the different means of sampling, transfer, concentration, injection, separation and detection.
- the sampling loop has a volume of between 10 yL and 500 yL, preferably between 50 yL and 300 yL and particularly preferably having a volume between 100yL and 200yL.
- the sampling loop has a volume of between 0.5 ml and 100mL, preferably between 1mL and 40mL, more preferably between 5mL and 20mL.
- the device of the present invention (with or without concentration means) is therefore characterized by sampling means for sampling a very small sample gas volume compared to those used in miniaturized devices of the prior art.
- This low sampling volume therefore makes it possible to reduce the duration of the sampling without affecting the detection sensitivity of the VOCs.
- the device of the invention thus allows very fast VOC detections (typically less than 10 minutes).
- the sampling means are connected on the one hand to the sampling means and on the other hand to the injection means when the device does not comprise concentration means or to the means making it possible to transfer the sample gas sampled to the means of sampling. concentration when the device comprises concentration means.
- the injection means are a valve, preferably multichannel, thus making it possible not only to inject the gas sample into the separation means but also to inject other fluids necessary for the detection, such as for example a carrier gas for conveying the gaseous sample in the gas circulation circuit to the detection means.
- the means for separating the compound to be detected are a gas phase microchromatography comprising a microcolumn.
- gas phase microchromatography is meant a gas phase chromatography of micrometric size, that is to say implementing a microcolumn.
- Gas phase microchromatography has been miniaturized.
- the size of the gas phase microchromatography according to the invention has been reduced by at least a factor of 20 compared to conventional benchtop gas chromatography.
- micro-column is meant a column whose internal diameter is less than or equal to 0.25 mm, preferably less than 0.20 mm, and even more preferably less than 0.15 mm.
- VB Wax® having the following characteristics: 100% Polyethylene glycol (stationary phase); length 15 m; inner diameter 0.25 mm; film thickness 0.5 ⁇ m; and Rtx-624® having the following characteristics: 6% Cyanopropylphenyl / 94% dimethylpolysiloxane (stationary phase), length 20 m; internal diameter 0.18 mm; film thickness 1.0 ym.
- the microcolumn is an apolar or very slightly polar microcolumn.
- the microcolumn is placed in an oven, preferably thermally insulated, so that the microcolumn has a temperature between 30 ° C and 150 ° C, preferably between 50 ° C and 100 ° C.
- the detection means of the compound are not limited and correspond to all the detection devices allowing to be miniaturized.
- the detection means of the compound are selected from the group consisting of a photoionization microdetector (PID), a spectrometer for colorimetric detection, a katharometer, a flame ionization detector (FID), a mini-detector or a mass micro-spectrometer, an acoustic detector, an infrared detector based on tunable laser diodes.
- the means for detecting the compound are a photoionization microdetector (PID) having an ionization chamber volume of between 0, lyL and 100 yL, preferably between lyL and 10 yL.
- PID photoionization microdetector
- the small volume of the ionization chamber of the microdetector PID makes it possible not to add additional carrier gas and thus reduce the gas consumption while maintaining a satisfactory sensitivity.
- the PID has the advantage of being very specific and very sensitive to unsaturated molecules making it perfectly suitable for the detection of BTEX.
- Another object of the present invention is a method for detecting at least one volatile compound in a gaseous sample comprising the steps of:
- step (iii) injecting the sample taken in step (i) and sampled in step (ii) into means allowing separation of the compound to be detected;
- - may further comprise a step of injecting a carrier gas in step (i) and / or (ii) and / or (iii) and / or (iv) and / or (v); and having a total consumption of carrier gas of between 0.1 ml / min and 5 ml / min.
- carrier gas means the gas intended to be injected into the separation means and to pass through the detection means.
- the method of the invention requires only a small amount of gas thus making it perfectly suitable for measurements made directly on sites.
- the total gas consumption is between 0.1 ml / min and 5 ml / min, preferably between 0.5 ml / min and 3 ml / min and even more preferably between 0.8 ml. / min and 2.5mL / min.
- the total gas consumption is at least 20mL / min and 250mL / min.
- the consumption of carrier gas during step (i) consisting in taking the gaseous sample comprising the compound to be detected is between 0.1 mL / min and 5 mL / min, preferably between 0.5 mL / min and 3.0 mL / min, and even more preferably between 0.8 mL / min and 2.5 mL / min;
- the carrier gas consumption during step (ii) of sampling the gaseous sample is between 0.1 ml / min and 5 ml / min, preferably between 0.5 ml / min and 3 ml / min and still more preferred between 0.8 mL / min and 2.5 mL / min;
- the consumption of carrier gas during step (iii) consisting in the injection of the sample taken in step (i) and sampled in step (ii) in means allowing the separation of the compound to be detected; between 0.1 ml / min and 5 ml / min, preferably between 0.5 ml / min and 3 ml / min and even more preferably between 0.8 ml / min and 2.5 ml / min; the consumption of carrier gas during step (iv) of separating the compound to be detected is between 0.1 ml / min and 5 ml / min, preferably between 0.5 ml / min and 3 ml / min, and still more preferred between 0.8 mL / min and 2.5 mL / min; and
- the consumption of carrier gas during step (v) of detecting the compound is between 0.1 ml / min and 5 ml / min, preferably between 0.5 ml / min and 3 ml / min and even more preferably between 0.8mL / min and 2.5mL / min.
- the method of the invention requires only a very low consumption of carrier gas, useful not only for the separation step but also for the injection and detection steps.
- the gaseous sample is selected from the group consisting of ambient air, a synthetic mixture, a standard gas mixture to be detected, a gaseous mixture in nitrogen, in synthetic air, in the oxygen or in argon.
- the compound to be detected is a volatile organic compound selected from the group consisting of benzene, toluene, ethylbenzene, para-xylene, ortho-xylene and meta-xylene, and other unsaturated VOCs, namely the other aromatic compounds as well as the alkenes and their mixtures.
- the compound to be detected is a volatile organic compound selected from the group consisting of benzene, toluene, ethylbenzene, para-xylene, ortho-xylene and meta-xylene and their mixtures.
- sampling of the gaseous sample comprising the compound to be detected in step (i) is carried out with a pumping system that may be optionally associated with an air flow control means.
- the sampling step (ii) is carried out with sampling means, such as for example a sampling loop, preferably calibrated.
- sampled volume can not be zero.
- the sampled volume is between 10yL and 100mL.
- the volume of the sampling loop is between 10yL and 500yL, preferably between 50yL and 300yL and particularly preferably between 100 and 200yL.
- the method comprises a pre-concentration step subsequent to step (ii) in order to increase the limit of detection.
- the volume of the sampling loop is between 0.5mL and 100mL, preferably between 1mL and 40mL, and even more preferably between 5mL. and 20mL.
- the transfer of the sampled volume to the concentration means is carried out using a transfer gas.
- the transfer gas is the carrier gas intended to be injected into the separation means.
- the transfer gas is not included in the total consumption of carrier gas in the method within the meaning of the present invention.
- the transfer gas and the carrier gas can therefore have different flow rates.
- the transfer of the sampled volume to the concentration means is achieved with a transfer gas at a flow rate between 0.1 ml / min and 100 ml / min, preferably between 0.2 ml / min and 40 ml / min and even more preferably between 1 ml / min and 20 ml / min.
- a transfer gas at a flow rate between 0.1 ml / min and 100 ml / min, preferably between 0.2 ml / min and 40 ml / min and even more preferably between 1 ml / min and 20 ml / min.
- a transfer gas at a flow rate between 0.1 ml / min and 100 ml / min, preferably between 0.2 ml / min and 40 ml / min and even more preferably between 1 ml / min and 20 ml / min.
- it may for example be transferred to 2.5 mL / min for 2 min.
- the method of the present invention (with or without a pre-concentration step) is therefore characterized by sampling carried out in sampling means, for example a sampling loop having a very small volume compared with those used in the methods. known from the prior art.
- This low sampling volume therefore makes it possible to reduce the duration of the sampling without affecting the detection sensitivity of the VOCs.
- the method of the invention therefore allows very rapid detection of VOCs (typically less than 10 minutes).
- the injection step (iii) is carried out with a valve, preferably multichannel, thus making it possible not only to inject the gaseous sample but also to inject other fluids necessary for the detection. , such as for example a carrier gas for conveying the gaseous sample during detection.
- the injection of carrier gas at a constant flow rate can be carried out with any means of regulating flow and pressure, for example with a pressure regulator placed upstream of the column, or with a mass flow controller.
- the carrier gases according to the invention are not limited.
- the carrier gas may be hydrogen, nitrogen or a rare gas.
- the carrier gas is selected from the group consisting of hydrogen, nitrogen, helium, argon and mixtures thereof.
- the separation of the compound is carried out with a gas phase microchromatography comprising a microcolumn.
- VB Wax® having the following characteristics: 100% Polyethylene glycol (stationary phase); length 15 m; inner diameter 0.25 mm; film thickness 0.5 ⁇ m; and Rtx-624® having the following characteristics: 6% Cyanopropylphenyl / 94% dimethylpolysiloxane (stationary phase), length 20 m; internal diameter 0.18 mm; film thickness 1.0 ym.
- the microcolumn is an apolar or very slightly polar microcolumn.
- the micro-column is placed in an oven, preferably thermally insulated, so that the micro ⁇ column is at a temperature between 30 ° C and 150 ° C, preferably between 50 ° C and 100 ° C .
- the carrier gases according to the invention may be chosen from the group consisting of hydrogen, nitrogen, helium, argon and any other rare gas. They are adapted according to the column used, volatile organic compounds to be detected, analysis times, etc.
- the carrier gas is hydrogen since it has been demonstrated by the inventors that this carrier gas allows detection times. advantageously reduced and the increase in the height of chromatogram peaks relative to different BTEX.
- the gas phase microchromatography is carried out with an elution rate of between 0.1 ml / min and 5 ml / min of carrier gas. It has been demonstrated by the inventors that when nitrogen is used as carrier gas, the optimum flow rate is 1 ml / min and that, when hydrogen is used as a carrier gas, the optimum flow rate is 2 ml / min.
- the compound is detected with a detector selected from the group consisting of a spectrometer for colorimetric detection, a katharometer, a flame ionization detector (FID), a mini or a mass microspectrometer, a acoustic detector, an infrared detector based on tunable laser diodes.
- a detector selected from the group consisting of a spectrometer for colorimetric detection, a katharometer, a flame ionization detector (FID), a mini or a mass microspectrometer, a acoustic detector, an infrared detector based on tunable laser diodes.
- the compound is detected with a photoionization microdetector (PID) having an ionization chamber volume of between 0 .mu.l and 100 .mu.L, preferably between 0.5 .mu.L and 10 .mu.L.
- PID photoionization microdetector
- the small volume of the ionization chamber of the microdetector PID makes it possible not to add additional carrier gas and thus reduce the gas consumption while maintaining a satisfactory sensitivity.
- the PID has the advantage of being very specific and very sensitive to unsaturated molecules making it perfectly suitable for the detection of BTEX.
- the method of the invention makes it possible to obtain detection limits for benzene below the standards envisaged by the legislator, namely lppb ( 3 mg / m 3 ) when the carrier gas is hydrogen.
- the method of the invention with a prior concentration step provides even lower detection limits, less than 0.1 ppb.
- microdevice of detection of the present invention simultaneously comprises the following characteristics:
- the device of the invention or the method of the invention are perfectly adapted for measurements directly on site in order to detect possible sources (leakage in an industrial environment, etc.) of BTEX, even for very low concentrations.
- Another object of the present invention is therefore the use of the microdevice as defined above or of the method as defined above for detecting compounds chosen from the group consisting of benzene, toluene, ethylbenzene, methacrylate and the like.
- xylene, ortho-xylene and meta-xylene especially in enclosed environments, more particularly in establishments receiving the public (schools, nurseries, etc. ..).
- FIG. 1 is a descriptive diagram of the microdevice according to one embodiment of the invention
- FIGS. 2a and 2b show the different steps of the detection method according to an embodiment without a pre-concentration step
- Figures 3a to 3c show the different steps of the detection method according to another embodiment with a pre-concentration step
- Figure 4 is a chromatogram showing the separation of 100ppb of BTEX compounds.
- the microdevice shown in FIG. 1 comprises an inlet E, an outlet S and a gas circulation circuit starting after the sampling means and passing through sampling means ME (for example a sampling loop), possibly means of sampling.
- concentration MC for example, a pre-concentrator
- injection means for example a 6-way valve VI without preconcentrator or V2 with preconcentrator
- separation means MS of the compound to be detected for example, a microchromatography comprising a micro-column disposed in a furnace
- MD detection means of the compound for example a microdetector photoionization.
- the gas circulation circuit is especially characterized by its low volume of between 0.2 cm 3 and 2 cm 3, preferably between 0.5 cm 3 and 1.5 cm 3.
- the sampling means MP of a gaseous sample (in this case ambient air) comprising at least one compound to be detected are located at the inlet of the microdevice.
- the sampling means MP is a sampling line on which is installed a pump connected to an air flow regulator.
- the sampling means ME located after the sampling means MP are connected to a six-way valve VI.
- the 6-way valve VI is used to inject the gaseous sample from the sampling means to the separation means or to transfer the gaseous sample from the sampling means to the concentration means (depending on the case where the micro device whether or not includes concentration means) but also to inject other fluids necessary for separation and detection such as a carrier gas.
- the sampling loop makes it possible to sample a gaseous volume less than or equal to 100 ml, preferably between 10 ml and 100 ml.
- the 6-way valve VI makes it possible to inject the sample directly into the separation means MS.
- the valve VI plays the role of the injection means.
- valve VI makes it possible to transfer the sampled gas volume to the pre-concentration means MC.
- the injection means are represented by a second valve V2 for injecting pre ⁇ concentrated sample to separation means MS.
- the separated gaseous sample is subsequently detected by the detection means MD.
- Figures 2 represent the different steps of the method according to one embodiment when the method does not include pre-concentration step.
- the first step is to take and sample the gaseous sample ( Figure 2a).
- the valve VI is at the position 1 in order to sample the gas sample in a sampling loop having a volume of between 10 yL and 500 yL, preferably between 50 yL and 300 yL and particularly preferably between 100 and 200 yL.
- the sample to be analyzed is introduced in the channel 1 of the valve VI and leaves via the channel 6 in order to cross the sampling loop connected to the channels 6 to 3.
- the valve VI also makes it possible to inject a carrier gas (entering via the channel 4 and leaving via the channel 5) into the means of separation (MS) and detection (MD) but also to reject the undesirable compounds (lane 2).
- the second step consists of injecting the gaseous sample towards the separation means and then of detecting the sample separated by the detection means (FIG. 2b where the valve VI is on the injection position 2).
- the sample sampled in the sampling loop is output via channel 6 and is injected into the separation means via channel 5 where the carrier gas necessary for the separation and detection of the sample is also introduced. gaseous.
- Figures 3 represent the different steps of the method according to one embodiment when the method comprises a pre-concentration step.
- the first step is to take and sample the gas sample ( Figure 3a).
- the valve VI is in position 1 in order to sample the gas sample in a sampling loop having a volume of between 0.5 ml and 100 ml, preferably between 1 ml and 40 ml, and even more preferably between 5 ml and 20 ml. .
- the sample to be analyzed is introduced in the channel 1 of the valve VI and leaves via the channel 6 in order to cross the sampling loop connected to the channels 6 to 3.
- the valve V2 is in the position 2 and makes it possible to supply carrier gas with the separation (MS) and detection (MD) means.
- the carrier gas is introduced into V2 via route 4 and exits via route 5 in order to feed the separation and detection means.
- the second step ( Figure 3b) is to transfer the sampled gas volume to the pre ⁇ concentration means.
- the valve 1 is therefore on the position 2 during this step and thus allows the gas volume to be transferred using the same gas as that used as the carrier gas and necessary for this transfer.
- the flow rate used during this transfer may be substantially different from that of the carrier gas passing through the separation means (a micro ⁇ column for example).
- the sample sampled in the sampling loop connected to channels 3 to 6 is transferred to the concentration means via the same gas as that used as the incoming carrier gas via channel 4 of VI.
- the sampled sample therefore exits via the channel 5 of VI and is introduced into the valve V2 via the channel 1 to be introduced into the concentration means via the channel 6 of V2.
- the transfer of the sampled volume to the concentration means is carried out with a flow rate of between 0.1 ml / min and 100 ml / min, preferably between 0.2 ml / min and 40 ml / min and even more preferably between lmL / min. min and 20mL / min.
- the valve V2 is in turn still in the position 2 and allows to feed carrier gas separation means (MS) and detection (MD) (the carrier gas enters via channel 4 of V2 and spring to the means of separation by way of V2).
- MS carrier gas separation means
- MD detection
- the third step (FIG. 3c) consists in injecting the preconcentrated gaseous sample towards the separation means MS and then detecting the sample separated by the detection means MD.
- Valve 1 then returns to position 1 and valve 2 is in position 2.
- the carrier gas enters via the channel 4 of the valve V2, exits via the channel 5 to cross the pre ⁇ concentrator by driving the pre-concentrated gaseous sample which enters via the channel 6 of V2 and leaves the lane 5 of V2 to the separation means.
- the detection of the compounds contained in the synthetic air generated was carried out using the device as described in FIG. 1, according to the following steps:
- the sample from the sampling loop is then injected into a gas microchromatography micro-column arranged in an oven, using a 6-way valve which simultaneously also injects hydrogen as carrier gas in the micro-column so that the sample is entrained in the column by the carrier gas;
- FIG. 4 represents the chromatogram obtained by implementing the method previously described.
- This detection method therefore allows rapid quantitative analysis (in less than 10 minutes) of BTEX and requires only a very small amount of carrier gas (2.5 mL / min in the example of FIG. 4).
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Abstract
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Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1462013A FR3029637B1 (fr) | 2014-12-05 | 2014-12-05 | Microdispositif de detection de composes organiques volatils et methode de detection d'au moins un compose organique volatil compris dans un echantillon gazeux |
PCT/FR2015/053339 WO2016087805A1 (fr) | 2014-12-05 | 2015-12-04 | Microdispositif de détection de composés organiques volatils et méthode de détection d'au moins un composé organique volatil compris dans un échantillon gazeux |
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EP3227674A1 true EP3227674A1 (fr) | 2017-10-11 |
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EP15817479.7A Withdrawn EP3227674A1 (fr) | 2014-12-05 | 2015-12-04 | Microdispositif de détection de composés organiques volatils et méthode de détection d'au moins un composé organique volatil compris dans un échantillon gazeux |
Country Status (6)
Country | Link |
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US (1) | US10823711B2 (fr) |
EP (1) | EP3227674A1 (fr) |
JP (1) | JP2017536553A (fr) |
CN (1) | CN107110832A (fr) |
FR (1) | FR3029637B1 (fr) |
WO (1) | WO2016087805A1 (fr) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9931025B1 (en) | 2016-09-30 | 2018-04-03 | Auris Surgical Robotics, Inc. | Automated calibration of endoscopes with pull wires |
CN108088921A (zh) * | 2017-12-12 | 2018-05-29 | 优泰科技(深圳)有限公司 | Voc在线监测仪 |
CN110095541A (zh) * | 2019-05-06 | 2019-08-06 | 南京工业大学 | 一种气体分离表征装置及混合气体分离性能检测方法 |
US11760169B2 (en) | 2020-08-20 | 2023-09-19 | Denso International America, Inc. | Particulate control systems and methods for olfaction sensors |
US11932080B2 (en) | 2020-08-20 | 2024-03-19 | Denso International America, Inc. | Diagnostic and recirculation control systems and methods |
US11813926B2 (en) | 2020-08-20 | 2023-11-14 | Denso International America, Inc. | Binding agent and olfaction sensor |
US11828210B2 (en) | 2020-08-20 | 2023-11-28 | Denso International America, Inc. | Diagnostic systems and methods of vehicles using olfaction |
US11881093B2 (en) | 2020-08-20 | 2024-01-23 | Denso International America, Inc. | Systems and methods for identifying smoking in vehicles |
US11760170B2 (en) | 2020-08-20 | 2023-09-19 | Denso International America, Inc. | Olfaction sensor preservation systems and methods |
US11636870B2 (en) | 2020-08-20 | 2023-04-25 | Denso International America, Inc. | Smoking cessation systems and methods |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20110192214A1 (en) * | 2010-02-08 | 2011-08-11 | Antonio Calleri | Field gas chromatograph with flame ionization |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4215564A (en) * | 1979-02-06 | 1980-08-05 | Gow-Mac Instrument Co. | Miniaturized thermal conductivity detector |
JPS63158454A (ja) * | 1986-12-23 | 1988-07-01 | Mitsubishi Gas Chem Co Inc | ガスクロマトグラフ装置用光イオン化検出器 |
JPH09178721A (ja) * | 1995-12-27 | 1997-07-11 | Sanyo Sekiyu Kagaku Kk | 水素・炭化水素混合物のガスクロマトグラフによる同時分析方法、およびガスクロマトグラフ |
EP0789238A1 (fr) * | 1996-02-07 | 1997-08-13 | Chrompack International B.V. | Dispositif d'interface exchangeable entre des composants de système chromatographique et des chromatographes miniaturisés en phase gazeuse |
WO1998035940A1 (fr) | 1997-02-14 | 1998-08-20 | Bionumerik Pharmaceuticals, Inc. | Derives de camptothecine hautement lipophile |
US6701774B2 (en) * | 2000-08-02 | 2004-03-09 | Symyx Technologies, Inc. | Parallel gas chromatograph with microdetector array |
CN2439025Y (zh) | 2000-09-29 | 2001-07-11 | 中国科学院大连化学物理研究所 | 一种气体样品的动态预浓缩装置 |
US7682506B2 (en) * | 2005-09-16 | 2010-03-23 | Dionex Corporation | IC system including sample pretreatment and using a single pump |
CN2881592Y (zh) * | 2005-12-22 | 2007-03-21 | 北京市劳动保护科学研究所 | 一种便携式气相色谱仪的样品采集和进样装置 |
CN100489518C (zh) | 2005-12-22 | 2009-05-20 | 北京市劳动保护科学研究所 | 一种用于环境气体中痕量有机物分析的便携式气相色谱仪 |
US8034290B1 (en) * | 2007-01-29 | 2011-10-11 | LDARtools, Inc. | Reigniting flame in volatile organic compound device |
JP2009047622A (ja) * | 2007-08-22 | 2009-03-05 | Fujitsu Ltd | 揮発性有機化合物測定用ガスクロマトグラフ装置および揮発性有機化合物の測定方法 |
GB2453531B (en) * | 2007-10-04 | 2010-01-06 | Microsaic Systems Ltd | Pre-concentrator and sample interface |
JP5038204B2 (ja) * | 2008-03-26 | 2012-10-03 | 矢崎総業株式会社 | ガスクロマトグラフ装置 |
US8087283B2 (en) * | 2008-06-17 | 2012-01-03 | Tricorntech Corporation | Handheld gas analysis systems for point-of-care medical applications |
JP5535674B2 (ja) * | 2010-02-05 | 2014-07-02 | シャープ株式会社 | 呼気分析装置 |
CN102128896A (zh) | 2010-11-19 | 2011-07-20 | 聚光科技(杭州)股份有限公司 | 一种采样方法及装置 |
CN103782165B (zh) * | 2011-09-13 | 2016-01-06 | 英派尔科技开发有限公司 | 小型化气相色谱仪 |
FR2985314B1 (fr) * | 2011-12-28 | 2015-01-16 | Ct Scient Tech Batiment Cstb | Developpement d'un microsysteme de detection |
-
2014
- 2014-12-05 FR FR1462013A patent/FR3029637B1/fr not_active Expired - Fee Related
-
2015
- 2015-12-04 WO PCT/FR2015/053339 patent/WO2016087805A1/fr active Application Filing
- 2015-12-04 EP EP15817479.7A patent/EP3227674A1/fr not_active Withdrawn
- 2015-12-04 US US15/533,148 patent/US10823711B2/en active Active
- 2015-12-04 JP JP2017529830A patent/JP2017536553A/ja active Pending
- 2015-12-04 CN CN201580066289.XA patent/CN107110832A/zh active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20110192214A1 (en) * | 2010-02-08 | 2011-08-11 | Antonio Calleri | Field gas chromatograph with flame ionization |
Non-Patent Citations (2)
Title |
---|
LEWIS A C ET AL: "Microfabricated planar glass gas chromatography with photoionization detection", JOURNAL OF CHROMATOGRAPHY A, ELSEVIER, AMSTERDAM, NL, vol. 1217, no. 5, 29 January 2010 (2010-01-29), pages 768 - 774, XP026827439, ISSN: 0021-9673, [retrieved on 20091204] * |
See also references of WO2016087805A1 * |
Also Published As
Publication number | Publication date |
---|---|
JP2017536553A (ja) | 2017-12-07 |
FR3029637A1 (fr) | 2016-06-10 |
CN107110832A (zh) | 2017-08-29 |
US10823711B2 (en) | 2020-11-03 |
WO2016087805A1 (fr) | 2016-06-09 |
US20170343517A1 (en) | 2017-11-30 |
FR3029637B1 (fr) | 2018-01-05 |
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