CN203894206U - Gas chromatograph for determining poisonous and harmful substances in foods - Google Patents
Gas chromatograph for determining poisonous and harmful substances in foods Download PDFInfo
- Publication number
- CN203894206U CN203894206U CN201420297139.2U CN201420297139U CN203894206U CN 203894206 U CN203894206 U CN 203894206U CN 201420297139 U CN201420297139 U CN 201420297139U CN 203894206 U CN203894206 U CN 203894206U
- Authority
- CN
- China
- Prior art keywords
- detector
- gas chromatograph
- column
- chromatographic column
- integrated circuit
- 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.)
- Expired - Fee Related
Links
Landscapes
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
Abstract
The utility model discloses a gas chromatograph for determining poisonous and harmful substances in foods. The gas chromatograph comprises a housing, a sample inlet device, a chromatographic column, a detector device and an integrated circuit board, wherein the sample inlet device, the chromatographic column, the detector device and the integrated circuit board are arranged inside the housing; the sample inlet device is connected with the chromatographic column; the chromatographic column is connected with the detector device; the detector device is connected with the integrated circuit board; two single-packing-column samplers and a dual-packing-column sampler are arranged on the sample inlet device; both the single-packing-column samplers and the dual-packing-column sampler are connected with the chromatographic column; and the detector device comprises a thermal conductivity detector, a flame photometry detector and an electronic capture detector. Different detectors can be adopted to combine according to different analysis applications; the series and parallel operation of the detectors can be conveniently achieved; a high-resistance rhenium-tungsten wire is adopted for the thermal conductivity detector; and the gas chromatograph has high stability, and is more suitable for detection in the field of food pesticide residues. A shock absorber is arranged at the bottom of the housing of the gas chromatograph, so that the gas chromatograph is suitable for vehicle-mounted application.
Description
Technical field
The utility model relates to a kind of detecting instrument technical field, particularly relates to a kind of gas chromatograph of measuring for food poisonous and harmful substance.
Background technology
After twentieth century, quick progress and the development of society, make people's living standard have the change of matter, people's the level of understanding is also greatly improved simultaneously, people have forwarded to qualitatively gradually in quantity to the pursuit of material, in addition, also just because of scientific and technological progress, the significantly development of industry, the mankind's living environment has been subject to very havoc, no matter be due to environmental pollution or due to artificial interpolation, food-safety problem is more and more serious, food is the basis that meets human growth and normal activity institute's energy requirement and nutriment, the safety of food is not only determining the health and safety of contemporary people, more affect mankind descendants's health and safety, at present, for the detection of food, mainly lay particular emphasis on residues of pesticides, residue of veterinary drug, heavy metal, pathogenic
Microorganism, food self component and harmful food additives, the generation of the novel detecting device of gas chromatography, and with other analytical technologies as IR, the coupling of MS, make GC method become the powerful that Safety of Food Quality detects, for example, capillary gas chromatography is high with its separation efficiency in recent years, analysis speed is fast, the features such as amount of samples is few, in the GC analyzing and testing of food residues of pesticides etc., take the course of its own, the utility model patent that China's application number is CN201293774 discloses a kind of gas chromatograph, comprise injection port, glass-filled chromatographic column, capillary chromatograph, the chromatographic analysis systems that flame ionization detector forms and the transfer conduit of connecting components, realize analytic type gas chromatograph system, its weak point is that structure is comparatively complicated, injector is selected single, detecting device is easily saturated, thermal conductivity detector (TCD) stability is lower, be not suitable for vehicle-mounted use.
Summary of the invention
The purpose of this utility model is to provide a kind of gas chromatograph of measuring for food poisonous and harmful substance, has solved above-mentioned multinomial defect.
The technical matters that the utility model solves can realize by the following technical solutions: a kind of gas chromatograph of measuring for food poisonous and harmful substance, comprise shell and injection port device is in the enclosure set, chromatographic column, detector means and surface-mounted integrated circuit, described injection port device is connected with chromatographic column, chromatographic column is connected with detector means, detector means is connected with surface-mounted integrated circuit, described injection port device is provided with 2 single packed column injectors and 1 two packed column injector, single packed column injector is all connected with chromatographic column with two packed column injectors.
Preferably, described detector means comprises thermal conductivity detector (TCD), flame photometric detector (FPD) and electron capture detector, and thermal conductivity detector (TCD), flame photometric detector (FPD) and electron capture detector are all connected with surface-mounted integrated circuit.
Preferably, described pair of packed column injector is provided with three-way connector, and three-way connector connects two packed column injector outlets and chromatographic column.
Preferably, described thermal conductivity detector (TCD) material adopts rhenium tungsten filament.
Preferably, described gas chromatograph outer casing bottom is provided with vibroshock.
Employing the utility model has the advantage of: the utility model comprises shell and injection port device is in the enclosure set, chromatographic column, detector means, surface-mounted integrated circuit, described injection port device is by being provided with 2 single packed column injectors and 1 two packed column injector, can select best injector combination, and injector dismounting is simple, described detector means comprises thermal conductivity detector (TCD), flame photometric detector (FPD) and electron capture detector, can adopt different detector combination according to different analytical applications, can easily realize the series and parallel connections work of detecting device, described thermal conductivity detector (TCD) adopts rhenium tungsten filament, sensitivity can be up to 10000mVmL/mg, there is very high stability, described pair of packed column injector is provided with three-way connector, repack two packed column injectors into capillary column injector, be more suitable in the detection in food residues of pesticides field, described gas chromatograph outer casing bottom is provided with vibroshock, be applicable to vehicle-mounted use, in the time that being arranged on automobile, this gas chromatograph can play damping effect, the effect of each parts in protection instrument.
Brief description of the drawings
Fig. 1 is inner structure schematic diagram of the present utility model.
Fig. 2 is front schematic view of the present utility model.
Wherein: 1-injection port device, 2--mono-packed column injector, 3-bis-packed column injectors, 4-three-way connector, 5-chromatographic column, 6-detector means, 7-surface-mounted integrated circuit, 8-shell, 9-thermal conductivity detector (TCD), 10-flame photometric detector (FPD), 11-electron capture detector, 12-vibroshock.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach object and effect is easy to understand, below in conjunction with embodiment, further set forth the utility model.
As depicted in figs. 1 and 2, a kind of gas chromatograph of measuring for food poisonous and harmful substance, comprise shell 8 and be arranged on the injection port device 1 in shell 8, chromatographic column 5, detector means 6, surface-mounted integrated circuit 7, described injection port device 1 is connected with chromatographic column 5, chromatographic column 5 is connected with detector means 6, detector means 6 is connected with surface-mounted integrated circuit 7, described injection port device 1 is provided with 2 and 1 two packed column injector 3 of 2 single packed column injectors, single packed column injector 2 is all connected with chromatographic column 5 with two packed column injectors 3, when gaseous sample is sent into after chromatographic system by certain input mode, in sample, each component of potpourri is under the drive of mobile phase (carrier gas), by being called the fixing phase of chromatographic column 5, utilize each component in mobile phase, to there is different adsorptive poweies, in the time that relative motion is done in two-phase, in sample, each component will the repeated multiple times effect that is subject to above-mentioned motive power in two-phase, thereby make each component in potpourri obtain separation, one-component after separated enters the system of detecting device with carrier gas, the conversion of acquisition non electrical quantity, chemical composition is transformed into the electric signal being directly proportional to its concentration, then carry out analytic sample composition by the difference of these electric signal, can select best injector combination, and injector dismounting is simple, described detector means comprises thermal conductivity detector (TCD) 9, flame photometric detector (FPD) 10 and electron capture detector 11, can adopt different detector combination according to different analytical applications, can easily realize the series and parallel connections work of detecting device, described thermal conductivity detector (TCD) adopts rhenium tungsten filament, sensitivity can be up to 10000mVmL/mg, there is very high stability, described pair of packed column injector 3 is provided with three-way connector 4, repack two packed column injectors 3 into capillary column injector, be more suitable in the detection in food residues of pesticides field, described gas chromatograph outer casing bottom is provided with vibroshock 12, be applicable to vehicle-mounted use, in the time that being arranged on automobile, this gas chromatograph can play damping effect, the effect of each parts in protection instrument.
The foregoing is only embodiment of the present utility model; not thereby limit the scope of the claims of the present utility model; every equivalent structure or conversion of equivalent flow process that utilizes the utility model instructions and accompanying drawing content to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.
Claims (5)
1. a gas chromatograph of measuring for food poisonous and harmful substance, it is characterized in that: comprise shell and injection port device, chromatographic column, detector means and surface-mounted integrated circuit is in the enclosure set, described injection port device is connected with chromatographic column, chromatographic column is connected with detector means, detector means is connected with surface-mounted integrated circuit, described injection port device is provided with 2 single packed column injectors and 1 two packed column injector, and single packed column injector is all connected with chromatographic column with two packed column injectors.
2. a kind of gas chromatograph of measuring for food poisonous and harmful substance according to claim 1, it is characterized in that: described detector means comprises thermal conductivity detector (TCD), flame photometric detector (FPD) and electron capture detector, thermal conductivity detector (TCD), flame photometric detector (FPD) and electron capture detector are all connected with surface-mounted integrated circuit.
3. a kind of gas chromatograph of measuring for food poisonous and harmful substance according to claim 1, is characterized in that: described pair of packed column injector is provided with three-way connector, and three-way connector connects two packed column injector outlets and chromatographic column.
4. a kind of gas chromatograph of measuring for food poisonous and harmful substance according to claim 2, is characterized in that: described thermal conductivity detector (TCD) material adopts rhenium tungsten filament.
5. a kind of gas chromatograph of measuring for food poisonous and harmful substance according to claim 1, is characterized in that: described gas chromatograph outer casing bottom is provided with vibroshock.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420297139.2U CN203894206U (en) | 2014-06-06 | 2014-06-06 | Gas chromatograph for determining poisonous and harmful substances in foods |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420297139.2U CN203894206U (en) | 2014-06-06 | 2014-06-06 | Gas chromatograph for determining poisonous and harmful substances in foods |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203894206U true CN203894206U (en) | 2014-10-22 |
Family
ID=51720593
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420297139.2U Expired - Fee Related CN203894206U (en) | 2014-06-06 | 2014-06-06 | Gas chromatograph for determining poisonous and harmful substances in foods |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203894206U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106770860A (en) * | 2017-03-28 | 2017-05-31 | 力合科技（湖南）股份有限公司 | A kind of gas chromatograph |
| CN115166108A (en) * | 2022-06-13 | 2022-10-11 | 深圳市鑫宇环标准技术有限公司 | Method for measuring residual quantity of metrafenone |
-
2014
- 2014-06-06 CN CN201420297139.2U patent/CN203894206U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106770860A (en) * | 2017-03-28 | 2017-05-31 | 力合科技（湖南）股份有限公司 | A kind of gas chromatograph |
| CN115166108A (en) * | 2022-06-13 | 2022-10-11 | 深圳市鑫宇环标准技术有限公司 | Method for measuring residual quantity of metrafenone |
| CN115166108B (en) * | 2022-06-13 | 2023-12-22 | 深圳市鑫宇环标准技术有限公司 | Method for measuring residue quantity of metrafenone |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104535664B (en) | A kind of method simultaneously detecting multiple mycotoxin in sesame paste | |
| CN202153220U (en) | NMHC (nonmethane hydrocarbons) measurement gas chromatograph | |
| CN105353056B (en) | Volatile organic matter on-line monitoring system | |
| CN202033333U (en) | Gas-phase adsorption-desorption device having function of automatically analyzing injected samples | |
| CN107561151B (en) | Quick pesticide residue detector based on mass spectrometry technology | |
| CN103278589B (en) | Detection method and device for volatile and semi-volatile components | |
| CN102735784A (en) | Method for simultaneously determining one hundred pesticide residuals in traditional Chinese medicine through ultrahigh performance liquid chromatography-tandem quadrupole mass spectrum | |
| CN101793879A (en) | Method for simultaneously measuring multiple residues of organic chloride and pyrethroid pesticides | |
| CN106770810A (en) | Online portable gas chromatograph and environment monitoring device | |
| CN104655778A (en) | Method for determining contents of 18 kinds of volatile and semi-volatile organic compounds in electronic cigarette smoke liquid and aerosol | |
| CN203894206U (en) | Gas chromatograph for determining poisonous and harmful substances in foods | |
| CN104330496B (en) | 9 kinds of nutraceutical detection methods in edible vegetable oil | |
| CN206573538U (en) | One kind is used to detect VOCs in ambient air full constituent fexible unit | |
| CN105424865A (en) | Illegal cooking oil detection method | |
| CN108627604A (en) | One kind is for detecting VOCs in ambient air full constituent fexible unit | |
| Zou et al. | Comparison of pulse glow discharge‐ion mobility spectrometry and liquid chromatography with tandem mass spectrometry based on multiplug filtration cleanup for the analysis of tricaine mesylate residues in fish and water | |
| CN202502076U (en) | Gas chromatograph for gas | |
| CN113804810A (en) | Chromatographic separation column and method for detecting VOCs gas chromatography | |
| CN103472162B (en) | The method that methane in sewage gas and hydrogen detect simultaneously | |
| Bunkoed et al. | A simple and high collection efficiency sampling method for monitoring of carbonyl compounds in a workplace environment | |
| CN109541088A (en) | A kind of purification method of patulin, solid-phase extraction column and its application | |
| CN106770797B (en) | The analysis method of perfluor acids pollutant in a kind of water based on carboxylated nano carbon microsphere material | |
| CN105548413A (en) | Method for pre-treating gutter-oil detection sample | |
| Liu et al. | On-site solid phase extraction and HPLC determination of chloramphenicol in surface water and sewage | |
| CN105388227A (en) | Quantitative detection method of benzyl disulfide in oil in oil-filled electrical equipment oil |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141022 Termination date: 20170606 |