CN104849118A - Inductively coupled plasma mass spectrometer coupling interface device and analysis method - Google Patents
Inductively coupled plasma mass spectrometer coupling interface device and analysis method Download PDFInfo
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Abstract
The invention provides an inductively coupled plasma mass spectrometer coupling interface device and an analysis method. The inductively coupled plasma mass spectrometer coupling interface device comprises a torch interface, a carrier gas mass flowmeter, an auxiliary gas mass flowmeter, a flow splitting T-joint, a flow combining T-joint, a carrier gas pipe, an auxiliary gas pipe and the like. The device is simple in structure and solves the problems that a plasma torch is flamed out, signals are unstable and the sensitivity is low when a tungsten wire capture electrothermal vaporization solid sampling device is coupled with an inductively coupled plasma mass spectrometer. The inductively coupled plasma mass spectrometer coupling interface device and the analysis method have the advantage that the detection of trace cadmium can be realized without performing digestion treatment to food samples, and have the characteristics of directness, quickness, high sensitivity, good stability and the like.
Description
Technical field
The invention belongs to field of detection of food safety, relate to a kind of the inductively coupled plasma mass spectrometer coupling interface device and the analytical approach that measure cadmium in foods.
Technical background
Current, China's some areas agricultural environment and agricultural product heavy metal cadmium problem comparatively outstanding.In April, 2014, cadmium is classified as the primary pollutant of soil environment by Environmental Protection Department combines issue " national Soil Pollution Investigation publication " with Ministry of Land and Resources.Cadmium in agricultural environment can be accumulated in edible portion by Crop, and is enriched in livestock and poultry and aquatic products by food chain, thus finally enters into generation harm in consumer's body.After Hunan " cadmium rice " event in 2013, in agricultural product, the pollution problem of cadmium is consumer and media spotlight always, and at present the cadmium pollution situation of agricultural product allows of no optimist really, wherein the pollution condition such as grain, vegetables, tealeaves, pluck, aquatic products is comparatively outstanding.
At present, measure the instrument of cadmium in foods and method with Liquid sample introduction system for mainstream technology, the country of current element analysis and the industry standard overwhelming majority are the atomic absorption spectrography (AAS)s (AAS) adopting Liquid sample introduction, atomic fluorescence spectrometry (AFS), inductively coupled plasma emission spectrography (ICP-AES), the methods such as inductively coupled plasma mass spectrometry (ICP-MS), such as GB/T 5009.15-2003 " mensuration of cadmium in foods ", SN/T 2056-2008 " imports and exports in tealeaves plumbous, arsenic, cadmium, copper, the mensuration ICP-AES of iron content ", SB/T 10922-2012 " chromium in meat quail, copper, total arsenic, cadmium, total mercury, plumbous mensuration inductively coupled plasma mass spectrometry " etc.Liquid sample introduction needs to carry out Specimen eliminating process in advance, by ashing and the process such as strong acid and strong oxidizer, complicated organic sample is converted to simple inorganic matrix, thus reduces Matrix effects and the loss to instrument.Liquid sample introduction system is easy to robotization, but sample introduction efficiency is lower, as atomizer sample introduction efficiency only have 10% ~ 15%, simultaneously sample pretreatment process that is complicated, consuming time, that require great effort greatly limit spectrographic technique at the scene, the application in express-analysis field.
Solid sampling method was just applied in the atomic spectrum early stage of development, and such as NaCl is directly imported the research of graphite furnace atomizer by nineteen fifty-seven L ' vov.But be limited to the rapid rising of technical conditions at that time and Liquid sample introduction system, solid sampling method does not obtain enough attention and development as the branch of spectral analysis technique.In recent years, along with material science, electric heating evaporation (ETV), laser ablation (LA), atom trap such as to catch at the high-level efficiency Sample introduction technology, background correction and the multielement sequential analytical technologies such as Zeeman effect, charge-coupled image sensor (CCD) and continuous light source (CS), and the development and application of the technology such as matrix modifier and Spectroscopy With Suspension-injection is promoted, the analysis means of solid sampling and obtaining the analysis ability of sample significantly promotes.Wherein, ETV-ICP-MS is because its antijamming capability is comparatively strong, linear dynamic range is wide and the ability of Simultaneous multi element analysis, and in solid sampling spectral technique, extremely researcher pays close attention to.
Although the spectral instrument of Direct solid sampling can adopt certain background correction technology to alleviate Matrix effects impact, but this is a kind of remedial technique, and the complicated substrate that solid sampling process is brought and spectra1 interfer-are restriction ETV solid sampling development and application bottleneck problem always.It is a kind of very effective solid sampling Matrix effects technology for eliminating that atom trap is caught, such as, utilize the survey mercury solid sample feeding device of gold amalgam principle, utilize tungsten filament to catch the survey cadmium solid sample feeding device of cadmium principle.Wherein, the novel solid sampling technique that cadmium solid sample feeding device is China scientific research personnel exploitation in recent years caught by the tungsten filament published, tungsten filament can catch atomic state cadmium at normal temperatures, and at high temperature effectively can discharge cadmium, then can realize preenrichment and Matrix separation two targets by catching of cadmium with Matrix separation, thus effectively alleviate Matrix effects.Simultaneously, this solid sample feeding device utilizes porous carbon as electric heating evaporation material, stability and the graphite-pipe of porous carbon materials are close, but evaporation power consumption is far below the latter, add that porous carbon materials self space is comparatively large, rapid heat dissipation, therefore can realize simple air-cooled fast but not water-cooled, be easy to miniaturization.At present, the survey cadmium solid sample feeding device of above-mentioned technology is utilized to achieve and the connecting of AFS.Solid sample feeding device in prior art, main function components comprises online cineration device, electric heating evaporation parts and tungsten filament capturing means, and when sample is in ashing state, the gas circuit of electric heating evaporation parts is open; When sample complete ashing enter electric heating evaporation parts time, the gas circuit of electric heating evaporation parts is closed.Because the gas circuit folding of electric heating evaporation parts and switching can cause the cataclysm of whole gas circuit air-flow and air pressure, the impact of this signals collecting for AFS is little, but for comparatively responsive plasma torch flame, swinging of signal can be caused even to put out torch; Meanwhile, in original argon hydrogen combination gas, hydrogen volume is not suitable for ICP-MS than the carrier gas atmosphere more than 10%, and the too high meeting of density of hydrogen causes putting out torch due to a large amount of ionization energy of hydrogen consumption.Therefore, original tungsten filament for AFS is caught its connecting interface of solid sample feeding device, gas circuit and atmosphere thereof and is formed and be not suitable for ICP-MS, if be directly connected with ICP-MS, ICP-MS can be caused normally to work, thus stable, the Accurate Determining of cadmium in foods cannot be realized.
Summary of the invention
The object of the invention is for the problems referred to above, a kind of tungsten filament is provided to catch electric heating evaporation solid sample feeding device and inductively coupled plasma mass spectrometer coupling connection device, this apparatus structure is simple, solve tungsten filament and catch electric heating evaporation solid sample feeding device and inductively coupled plasma mass spectrometer coupling used time plasma puts out the low difficult problem of torch, jitter and sensitivity, without the need to clearing up process to food samples, the detection to wherein Determination of Trace Amount Cadmium can be realized, there is the features such as direct, quick, highly sensitive, good stability.
A kind of inductively coupled plasma mass spectrometer coupling interface device measuring cadmium in foods, described inductively coupled plasma mass spectrometer coupling interface device comprises: by torch interface tube (13), carrier gas mass flowmeter (5), assisted gas mass flowmeter (6), diversion three-way (2), interflow threeway (11), carrier gas channel (3), assisted gas pipeline (4) forms, it is characterized in that: described carrier gas channel (3) is connected with argon hydrogen combination gas source of the gas (1) by diversion three-way (2) with the bottom righthand side gas access of assisted gas pipeline (4).
Described carrier gas channel (3) connects diversion three-way (2), carrier gas mass flowmeter (5), solid sample feeding device (7), interflow threeway (11) successively.
Described assisted gas pipeline (4) connects diversion three-way (2), assisted gas mass flowmeter (6), interflow threeway (11) successively.
Described carrier gas mass flowmeter (5) right-hand member connects diversion three-way (2) outlet, and left end connects solid sample feeding device (7).
The right-hand member of described torch interface tube (13) is connected with interflow threeway (11) by interflow gas circuit (12), and left end is connected with icp ms (14).
Described argon hydrogen combination gas is contain the argon hydrogen combination gas that volume ratio is 2%-4% hydrogen.
Described carrier gas channel (3), assisted gas pipeline (4), interflow gas circuit (12) pipeline, torch interface tube (13) are teflon material.
The analytical approach of described inductively coupled plasma mass spectrometer coupling interface device, comprises the steps:
About a, in atmosphere 500 DEG C, food samples to be measured dewaters by online ashing parts (8), ashing, removes most of organic substance;
B, described carrier gas channel (3) are by carrier gas mass flowmeter (5), is that the argon hydrogen combination gas of 2%-4% hydrogen passes into solid sample feeding device (7) accurately by certain flow rate containing volume ratio, ash residue is warming up to about 1600 DEG C by electric heating evaporation parts (9), the tungsten wire contact containing cadmium gasoloid and tungsten filament capturing means (10) obtained, wherein cadmium is caught by tungsten filament;
C, under the argon hydrogen combination gas atmosphere containing volume ratio being 2%-4% hydrogen, tungsten filament temperature is elevated to 1600-2000 DEG C by tungsten filament capturing means (10), and the cadmium discharged enters interflow threeway (11) with argon hydrogen combination gas;
The argon hydrogen combination gas containing volume ratio being 2%-4% hydrogen is passed into assisted gas mass flowmeter (6) by d, assisted gas pipeline (4), collaborate with tungsten filament capturing means (10) cadmium out at interflow threeway (11), enter torch interface tube (13) by interflow gas circuit (12), then enter the content that icp ms (14) analyzes cadmium.
The beneficial effect of the invention:
1, the bottleneck difficult problem that tungsten filament catches electric heating evaporation solid sample feeding device and inductively coupled plasma mass spectrometer coupling is solved---stable plasma torch flame, overcomes because tungsten filament catches that electric heating evaporation solid sample feeding device connects and the airflow fluctuation that causes makes the plasma torch flame of icp ms to stop working problem and signal sensitivity step-down problem.
2, there is two gas circuit pattern: by two mass-flow gas meter, achieve the air-flow precise hard_drawn tuhes of carrier gas gas circuit and assisted gas gas circuit, improve the stability of plasma torch flame; Secondary air, while stable plasma torch flame, fully can carry the cadmium in gas circuit dead volume, add transfer efficiency, improve sensitivity for analysis.
Accompanying drawing illustrates:
Below with reference to accompanying drawing and instantiation, the present invention will be further elaborated.
Fig. 1-catch electric heating evaporation solid sample feeding device and inductively coupled plasma mass spectrometer coupling connection device for tungsten filament;
1--argon hydrogen combination gas source of the gas, 2--diversion three-way, 3--carrier gas channel, 4--assisted gas pipeline, 5--carrier gas mass flowmeter, 6--assisted gas mass flowmeter, 7--solid sample feeding device, the online ashing parts of 8--, 9--electric heating evaporation parts, 10--tungsten filament capturing means, 11--collaborates threeway, 12--collaborates gas circuit, and 13--torch interface tube, 14--is connected into icp ms.
Embodiment:
Below in conjunction with specific embodiment, set forth the present invention further.Should be understood that these embodiments are only not used in for illustration of the present invention to limit the scope of the invention.
Unless otherwise defined, all specialties used in literary composition and scientific words and one skilled in the art the meaning be familiar with identical.In addition, any method similar or impartial to described content and material all can be applicable in the present invention.The use that better implementation method described in literary composition and material only present a demonstration.
Embodiment 1
Invention provides a kind of tungsten filament to catch electric heating evaporation solid sample feeding device and inductively coupled plasma mass spectrometer coupling connection device, embodiment comprises torch interface tube (13), carrier gas mass flowmeter (5), assisted gas mass flowmeter (6), diversion three-way (2), interflow threeway (11), carrier gas channel (3), assisted gas pipeline (4) forms, wherein: described carrier gas channel (3) is connected with argon hydrogen combination gas source of the gas (1) by diversion three-way (2) with the bottom righthand side gas access of assisted gas pipeline (4), described carrier gas channel (3) connects diversion three-way (2) successively, carrier gas mass flowmeter (5), solid sample feeding device (7), interflow threeway (11), described assisted gas pipeline (4) connects diversion three-way (2) successively, assisted gas mass flowmeter (6), interflow threeway (11), described carrier gas mass flowmeter (5) right-hand member connects diversion three-way (2) outlet, and left end connects solid sample feeding device (7).The right-hand member of described torch interface tube (13) is connected with interflow threeway (11) by interflow gas circuit (12), and left end is connected with icp ms (14).
When the standard solution containing cadmium is before electric heating evaporation solid sample feeding device sample introduction caught by tungsten filament, the dividing potential drop of argon hydrogen combination gas source of the gas (1) containing 2% hydrogen is set in about 0.5Mpa, carrier gas mass flowmeter (5) is set as 800mL/min, assisted gas mass flowmeter (6) is set as 300mL/min, cadmium is evaporated by electric heating evaporation parts (9) in solid sample feeding device (7), and caught by tungsten filament capturing means (10) and discharge again, gasoloid containing atomic state cadmium enters interflow threeway (11) in carrier gas channel (3), collaborating to mix in threeway (11) with the argon hydrogen combination gas flowed out in assisted gas mass flowmeter (6) again, the mixed cadmium gasoloid that contains enters torch interface tube (13) by interflow gas circuit (12), enter icp ms (14) again.Under electric heating evaporation solid sample feeding device optimal conditions caught by tungsten filament, the range of linearity surveying cadmium is 0.1 pik ~ 800 nanogram, the regression coefficient of typical curve is more than 0.996, and the detection limit of cadmium can reach 0.1 pik, and the relative standard deviation repeatedly measured is within 4%.
Embodiment 2
For 5 milligrams of ground rice (GB thing GBW10043), use the argon hydrogen combination gas containing 4% hydrogen as source of the gas, carrier gas mass flowmeter (5) is set as 700mL/min, assisted gas mass flowmeter (6) is set as 300mL/min, catch electric heating evaporation solid sample feeding device and icp ms with coupling arrangement series connection tungsten filament of the present invention, other conditions are identical with embodiment one.In working sample cadmium be 9.8 ± 0.6 micrograms/kilogram, this standard substance standard value 12 ± 3 microgram/kilogram within, the relative standard deviation repeatedly measured is within 10%, and the recovery of standard addition of high, medium and low (0.1,0.8,2.0 nanogram) level is all 85% ~ 110%.
Embodiment 3
For 5 milligrams of scallop powder (GB thing GBW10024), use the argon hydrogen combination gas containing 3% hydrogen as source of the gas, carrier gas mass flowmeter (5) is set as 700mL/min, assisted gas mass flowmeter (6) is set as 300mL/min, catch electric heating evaporation solid sample feeding device and icp ms with coupling arrangement series connection tungsten filament of the present invention, other conditions are identical with embodiment one.In working sample cadmium be 971.6 ± 33.7 micrograms/kilogram, this standard substance standard value 1060 ± 100 microgram/kilogram within, the relative standard deviation repeatedly measured is within 10%, and the recovery of standard addition of high, medium and low (0.1,0.8,2.0 nanogram) level is all 83% ~ 107%.
Above-mentioned three examples illustrate that a kind of tungsten filament provided by the invention catches electric heating evaporation solid sample feeding device and inductively coupled plasma mass spectrometer coupling connection device, can ensure the stability of inductivity coupled plasma mass spectrometry survey cadmium, sensitivity and accuracy.
Obviously, above-described embodiment is only for clearly example being described, and the restriction not to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all embodiments.And thus the apparent change of extending out or variation be still among the protection domain of the invention.
Claims (8)
1. an inductively coupled plasma mass spectrometer coupling interface device, described inductively coupled plasma mass spectrometer coupling interface device comprises: be made up of torch interface tube (13), carrier gas mass flowmeter (5), assisted gas mass flowmeter (6), diversion three-way (2), interflow threeway (11), carrier gas channel (3), assisted gas pipeline (4), it is characterized in that: described carrier gas channel (3) is connected with argon hydrogen combination gas source of the gas (1) by diversion three-way (2) with the bottom righthand side gas access of assisted gas pipeline (4).
2. inductively coupled plasma mass spectrometer coupling interface device as claimed in claim 1, is characterized in that: described carrier gas channel (3) connects diversion three-way (2), carrier gas mass flowmeter (5), solid sample feeding device (7), interflow threeway (11) successively.
3. inductively coupled plasma mass spectrometer coupling interface device as claimed in claim 1 or 2, is characterized in that: described assisted gas pipeline (4) connects diversion three-way (2), assisted gas mass flowmeter (6), interflow threeway (11) successively.
4. inductively coupled plasma mass spectrometer coupling interface device as claimed in claim 1 or 2, it is characterized in that: described carrier gas mass flowmeter (5) right-hand member connects diversion three-way (2) outlet, and left end connects solid sample feeding device (7).
5. inductively coupled plasma mass spectrometer coupling interface device as claimed in claim 1 or 2, it is characterized in that: the right-hand member of described torch interface tube (13) is connected with interflow threeway (11) by interflow gas circuit (12), and left end is connected with icp ms (14).
6. inductively coupled plasma mass spectrometer coupling interface device as claimed in claim 1 or 2, is characterized in that: described argon hydrogen combination gas is the argon hydrogen combination gas containing 2%-4% hydrogen.
7. inductively coupled plasma mass spectrometer coupling interface device as claimed in claim 1 or 2, is characterized in that: described carrier gas channel (3), assisted gas pipeline (4), interflow gas circuit (12) pipeline, torch interface tube (13) are teflon material.
8. the analytical approach of the inductively coupled plasma mass spectrometer coupling interface device as described in one of claim 1-7, is characterized in that: comprise the steps:
About a, in atmosphere 500 DEG C, food samples to be measured dewaters by online ashing parts (8), ashing, removes most of organic substance;
B, described carrier gas channel (3) are by carrier gas mass flowmeter (5), accurately the argon hydrogen combination gas containing 2%-4% hydrogen of certain flow rate is passed into solid sample feeding device (7), ash residue is warming up to about 1600 DEG C by electric heating evaporation parts (9), the tungsten wire contact containing cadmium gasoloid and tungsten filament capturing means (10) obtained, wherein cadmium is caught by tungsten filament;
C, containing 2%-4% hydrogen argon hydrogen combination gas atmosphere under, tungsten filament temperature is elevated to 1600-2000 DEG C by tungsten filament capturing means (10), the cadmium discharged with argon hydrogen combination gas enter interflow threeway (11);
Argon hydrogen combination gas containing 2%-4% hydrogen is passed into assisted gas mass flowmeter (6) by d, assisted gas pipeline (4), collaborate with tungsten filament capturing means (10) cadmium out at interflow threeway (11), enter torch interface tube (13) by interflow gas circuit (12), then enter the content that icp ms (14) analyzes cadmium.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105606692A (en) * | 2016-03-11 | 2016-05-25 | 中国农业科学院农业质量标准与检测技术研究所 | Device for detecting zinc through inductively coupled plasma mass spectrometry method and analysis method |
| CN105717055A (en) * | 2016-03-11 | 2016-06-29 | 中国农业科学院农业质量标准与检测技术研究所 | Device and method for measuring zinc through electric heating evaporation atomic absorption spectrometry method |
| CN105954089A (en) * | 2016-07-15 | 2016-09-21 | 中国工程物理研究院材料研究所 | Laser ablation sample feeding system |
| CN106198494A (en) * | 2016-06-30 | 2016-12-07 | 北京普析通用仪器有限责任公司 | A kind of inductive coupling plasma emission spectrograph |
| CN107271428A (en) * | 2017-07-03 | 2017-10-20 | 山东东仪光电仪器有限公司 | A kind of solid sampling analysis system for microwave plasma torch emission spectrum |
| CN108333244A (en) * | 2018-02-11 | 2018-07-27 | 上海零露仪器设备有限公司 | A kind of electrochemistry mass spectrometer |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02176458A (en) * | 1988-12-27 | 1990-07-09 | Yokogawa Electric Corp | Inductively coupled plasma mass spectrometer |
| US6265717B1 (en) * | 1998-07-15 | 2001-07-24 | Agilent Technologies | Inductively coupled plasma mass spectrometer and method |
| CN2856985Y (en) * | 2005-04-21 | 2007-01-10 | 四川大学 | Tungsten wire electrothermal atom transmitting spectrograph |
| CN102967590A (en) * | 2012-11-13 | 2013-03-13 | 北京吉天仪器有限公司 | Direct sample introduction type method and instrument for simultaneously measuring mercury and cadmium |
| CN204679320U (en) * | 2015-05-26 | 2015-09-30 | 中国农业科学院农业质量标准与检测技术研究所 | A kind of inductively coupled plasma mass spectrometer coupling interface device |
-
2015
- 2015-05-26 CN CN201510275139.1A patent/CN104849118B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02176458A (en) * | 1988-12-27 | 1990-07-09 | Yokogawa Electric Corp | Inductively coupled plasma mass spectrometer |
| US6265717B1 (en) * | 1998-07-15 | 2001-07-24 | Agilent Technologies | Inductively coupled plasma mass spectrometer and method |
| CN2856985Y (en) * | 2005-04-21 | 2007-01-10 | 四川大学 | Tungsten wire electrothermal atom transmitting spectrograph |
| CN102967590A (en) * | 2012-11-13 | 2013-03-13 | 北京吉天仪器有限公司 | Direct sample introduction type method and instrument for simultaneously measuring mercury and cadmium |
| CN204679320U (en) * | 2015-05-26 | 2015-09-30 | 中国农业科学院农业质量标准与检测技术研究所 | A kind of inductively coupled plasma mass spectrometer coupling interface device |
Non-Patent Citations (3)
| Title |
|---|
| HIDEO HAYASHI等: "Electrothermal Vaporization on a Tungsten Filament for the Determination of Arsenic in Chloride Solutions by Low-Pressure Helium ICP-MS", 《ANALYTICAL SCIENCES》 * |
| LI FENG等: "Solid sampling graphite fiber felt electrothermal atomic fluorescence spectrometry with tungsten coil atomic trap for the determination of cadmium in food samples", 《JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY》 * |
| 冯礼等: "固体进样原子荧光测量农产品中的镉", 《2012全国农业重金属污染监测与防治学术研讨会会刊》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105606692A (en) * | 2016-03-11 | 2016-05-25 | 中国农业科学院农业质量标准与检测技术研究所 | Device for detecting zinc through inductively coupled plasma mass spectrometry method and analysis method |
| CN105717055A (en) * | 2016-03-11 | 2016-06-29 | 中国农业科学院农业质量标准与检测技术研究所 | Device and method for measuring zinc through electric heating evaporation atomic absorption spectrometry method |
| CN106198494A (en) * | 2016-06-30 | 2016-12-07 | 北京普析通用仪器有限责任公司 | A kind of inductive coupling plasma emission spectrograph |
| CN105954089A (en) * | 2016-07-15 | 2016-09-21 | 中国工程物理研究院材料研究所 | Laser ablation sample feeding system |
| CN105954089B (en) * | 2016-07-15 | 2018-12-21 | 中国工程物理研究院材料研究所 | Laser ablation sampling system |
| CN107271428A (en) * | 2017-07-03 | 2017-10-20 | 山东东仪光电仪器有限公司 | A kind of solid sampling analysis system for microwave plasma torch emission spectrum |
| CN108333244A (en) * | 2018-02-11 | 2018-07-27 | 上海零露仪器设备有限公司 | A kind of electrochemistry mass spectrometer |
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