CN104111248A - Sampling needle used for determining elements in soil filtrate - Google Patents
Sampling needle used for determining elements in soil filtrate Download PDFInfo
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- CN104111248A CN104111248A CN201410315140.8A CN201410315140A CN104111248A CN 104111248 A CN104111248 A CN 104111248A CN 201410315140 A CN201410315140 A CN 201410315140A CN 104111248 A CN104111248 A CN 104111248A
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- flexible pipe
- feed liquor
- sampling needle
- soil
- needle
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Abstract
The invention provides a sampling needle used for determining elements in soil filtrate. The invention relates to a sample injector of an analytical instrument, mainly aims at inductively coupled plasma atomic emission spectrometers, atomic absorption and emission spectrometers and flame luminosity photometers and overcomes problems in filtering of soft flocks in a solution and suspended solids in soil during analysis of the soil filtrate. The sampling needle used for determining elements in the soil filtrate comprises a liquid introducing needle head, a connecting pipe, a liquid introducing flexible pipe, a hand-tighten joint, a filter membrane, a filter screen and a plastic flexible pipe. The end of the liquid introducing needle head is provided with the filter screen, the filter membrane is arranged at a position where the hand-tighten joint of the connecting pipe is connected with the plastic flexible pipe, so the effect of dual filtering is exerted; an ultrasonic cleaning agent can be used for cleaning of the needle. The sampling needle can be replaced, is easy to operate and has good practicality. The sampling needle provided by the invention is used for determining elements in the soil filtrate.
Description
Technical field
The present invention relates to injector in analytical instrument, mainly for inductively coupled plasma atomic emission spectrum, Atomic absorption and emission spectrum, flame luminosity photometer.
Background technology
At present, the sampling needle of automatic sampler is generally installed on the mechanical arm of automatic sampler, by the motion vertically downward of mechanical arm, sampling needle is entered in sample cup and contact with sample solution, reaches the object of automatic accurate quantification sampling.
Along with spectral technique is applied to agriculture test aspect, special inductively coupled plasma was applied in the analysis of soil metal elements, had improved especially accuracy in detection and detection efficiency in recent years.But soil filtrate is used Filter paper filtering but not the centrifugal rear filtration of hydro-extractor makes often in the time doing soil metal elements in enormous quantities and analyze, therefore in soil filtrate, just have and be suspended thing etc. in the soft flocks of filter paper and soil, easily cause atomizer to stop up, make to cause inductively coupled plasma courtyard emission spectrometer flame-out, affect the accuracy and the accuracy that detect data, and the process of impact experiment.
Summary of the invention
The present invention to solve soil filtrate in the time analyzing, filter out solution in the problem that is suspended thing in soft flocks and soil, thereby provide a kind of for measuring the sampling needle of soil filtrate element.
A kind ofly comprise feed liquor syringe needle, connecting pipe, feed liquor flexible pipe, hand-tight joint, filter membrane, filter screen and plastic flexible pipe for measuring the sampling needle of soil filtrate element, wherein, feed liquor syringe needle is communicated with feed liquor flexible pipe liquid feeding end by connecting pipe, one end of plastic flexible pipe is communicated with the link of feed liquor flexible pipe by hand-tight joint, hand-tight joint inside center is provided with filter membrane, and the needle end of feed liquor syringe needle is provided with filter screen.
The invention has the beneficial effects as follows: the needle end of the feed liquor syringe needle of sampling needle is provided with filter screen, connect plastic flexible pipe junction at the hand-tight joint of connecting hose and be provided with filter membrane, play the effect of double filtration, and can clean with ultrasonic cleaning agent in the time that filter screen is stopped up by foreign material; When filter membrane is stopped up by foreign material, can change, simple to operate practical, solved soil filtrate in the time analyzing, filter out solution in the problem that is suspended thing in soft flocks and soil.This sampling needle has double filtration net arrangement, guarantees that sample introduction process is suspended thing filtration totally by the soft flocks in soil filtrate and soil, can either ensure that the accuracy of determination data also can effectively reduce the infringement of instrument and equipment simultaneously.
The present invention is used for measuring soil filtrate element.
Brief description of the drawings
Fig. 1 is a kind of for measuring the schematic diagram of sampling needle of soil filtrate element described in embodiment one, wherein 1 represents that feed liquor syringe needle, 2 represents that connecting pipe, 3 represents that feed liquor flexible pipe, 4 represents that hand-tight joint, 5 represents that filter membrane, 6 represents that filter screen, 7 represents that plastic flexible pipe, 3-1 represent that liquid feeding end, 3-2 represent link;
Fig. 2 is the schematic diagram of filter screen 6.
Embodiment
Technical solution of the present invention is not limited to following cited embodiment, also comprises the combination in any between each embodiment.
Embodiment one: present embodiment is a kind of comprises feed liquor syringe needle 1, connecting pipe 2, feed liquor flexible pipe 3, hand-tight joint 4, filter membrane 5, filter screen 6 and plastic flexible pipe 7 for measuring the sampling needle of soil filtrate element, wherein, feed liquor syringe needle 1 is communicated with feed liquor flexible pipe 3 liquid feeding end 3-1 by connecting pipe 2, one end of plastic flexible pipe 7 is communicated with the link 3-2 of feed liquor flexible pipe 3 by hand-tight joint 4, hand-tight joint 4 inside are provided with filter membrane 5, and the needle end of feed liquor syringe needle 1 is provided with filter screen 6.
Embodiment two: present embodiment is different from embodiment one: filter membrane 5 is Coriolis SELROMPS-U20P acid and alkali-resistance ultra filtration membrane.Other is identical with embodiment one.
Present embodiment Coriolis SELROMPS-U20P acid and alkali-resistance ultra filtration membrane has met height and the low pH value (0-14) of test, the application requirements of high temperature (70 DEG C of the highest tolerable temperatures) and organic solvent medium situation, and possess superpower stability.
Embodiment three: present embodiment is different from embodiment one: feed liquor flexible pipe 3 is polyvinyl chloride pipe or teflon.Other is identical with embodiment one.
Embodiment four: present embodiment is different from embodiment one: be processed with groove on the link 3-2 of feed liquor flexible pipe 3.Other is identical with embodiment one.
On the link 3-2 of present embodiment feed liquor flexible pipe 3, be processed with groove, to ensure that described plastic flexible pipe can be from the slippage of feed tube link
Embodiment five: present embodiment is different from embodiment one: the internal diameter of feed liquor flexible pipe 3 is 1.0mm～1.5mm, external diameter is 1.0mm～2.0mm, wall thickness is 0.2mm～0.5mm.Other is identical with embodiment one.
Embodiment six: present embodiment is different from embodiment one: the internal diameter of feed liquor flexible pipe 3 is 1.0mm～2.0mm, external diameter is 1.5mm～2.0mm, wall thickness is 0.2mm～0.5mm.Other is identical with embodiment one.
Adopt following examples to verify beneficial effect of the present invention:
Embodiment mono-:
The present embodiment is a kind of comprises feed liquor syringe needle 1, connecting pipe 2, feed liquor flexible pipe 3, hand-tight joint 4, filter membrane 5, filter screen 6 and plastic flexible pipe 7 for measuring the sampling needle of soil filtrate element, wherein, feed liquor syringe needle 1 is communicated with feed liquor flexible pipe 3 liquid feeding end 3-1 by connecting pipe 2, one end of plastic flexible pipe 7 is communicated with the link 3-2 of feed liquor flexible pipe 3 by hand-tight joint 4, hand-tight joint 4 inside center are provided with filter membrane 5, and the needle end of feed liquor syringe needle 1 is provided with filter screen 6;
Wherein, filter membrane 5 is Coriolis SELROMPS-U20P acid and alkali-resistance ultra filtration membrane, and feed liquor flexible pipe 3 is polyvinyl chloride pipe, on the link 3-2 of feed liquor flexible pipe 3, is processed with groove, and feed liquor flexible pipe 3 internal diameters are 1.5mm, and external diameter is 2.0mm, and wall thickness is 0.25mm.
Claims (6)
1. one kind for measuring the sampling needle of soil filtrate element, it is characterized in that a kind ofly comprising feed liquor syringe needle (1) for measuring the sampling needle of soil filtrate element, connecting pipe (2), feed liquor flexible pipe (3), hand-tight joint (4), filter membrane (5), filter screen (6) and plastic flexible pipe (7), wherein, feed liquor syringe needle (1) is communicated with feed liquor flexible pipe (3) liquid feeding end (3-1) by connecting pipe (2), one end of plastic flexible pipe (7) is communicated with the link (3-2) of feed liquor flexible pipe (3) by hand-tight joint (4), hand-tight joint (4) inside center is provided with filter membrane (5), the needle end of feed liquor syringe needle (1) is provided with filter screen (6).
2. according to claim 1 a kind of for measuring the sampling needle of soil filtrate element, it is characterized in that filter membrane (5) is Coriolis SELROMPS-U20P acid and alkali-resistance ultra filtration membrane.
3. according to claim 1 a kind of for measuring the sampling needle of soil filtrate element, it is characterized in that feed liquor flexible pipe (3) is polyvinyl chloride pipe or teflon.
4. according to claim 1 a kind of for measuring the sampling needle of soil filtrate element, it is characterized in that being processed with groove on the link (3-2) of feed liquor flexible pipe (3).
5. according to claim 1 a kind of for measuring the sampling needle of soil filtrate element, the internal diameter that it is characterized in that feed liquor flexible pipe (3) is 1.0mm～1.5mm, and external diameter is 1.0mm～2.0mm, and wall thickness is 0.2mm～0.5mm.
6. according to claim 1 a kind of for measuring the sampling needle of soil filtrate element, the internal diameter that it is characterized in that feed liquor flexible pipe (3) is 1.0mm～2.0mm, and external diameter is 1.5mm～2.0mm, and wall thickness is 0.2mm～0.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410315140.8A CN104111248A (en) | 2014-07-03 | 2014-07-03 | Sampling needle used for determining elements in soil filtrate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410315140.8A CN104111248A (en) | 2014-07-03 | 2014-07-03 | Sampling needle used for determining elements in soil filtrate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104111248A true CN104111248A (en) | 2014-10-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410315140.8A Pending CN104111248A (en) | 2014-07-03 | 2014-07-03 | Sampling needle used for determining elements in soil filtrate |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5889217A (en) * | 1996-05-13 | 1999-03-30 | Rossabi; Joseph | Process and apparatus for obtaining samples of liquid and gas from soil |
| CN1402009A (en) * | 2002-09-27 | 2003-03-12 | 江南大学 | Sampling diluting device for bio-reaction process in-line testing system |
| CN101592568A (en) * | 2009-06-19 | 2009-12-02 | 厦门大学 | Sailing multi-channel membrane filtration suspended particle sampling system |
| CN201425558Y (en) * | 2009-06-04 | 2010-03-17 | 安徽农业大学 | Porous soil in-situ solution extractor |
| CN102421495A (en) * | 2009-03-06 | 2012-04-18 | 迪奥尼克斯公司 | Fluid sample delivery system and method |
| CN103197087A (en) * | 2012-01-09 | 2013-07-10 | 北京瑞利分析仪器有限公司 | Automatic sampler sampling needle used for strong acidic solution |
| CN103645292A (en) * | 2013-12-30 | 2014-03-19 | 北京雪迪龙科技股份有限公司 | Water-quality monitoring pre-treatment device and water quality monitoring system |
-
2014
- 2014-07-03 CN CN201410315140.8A patent/CN104111248A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5889217A (en) * | 1996-05-13 | 1999-03-30 | Rossabi; Joseph | Process and apparatus for obtaining samples of liquid and gas from soil |
| CN1402009A (en) * | 2002-09-27 | 2003-03-12 | 江南大学 | Sampling diluting device for bio-reaction process in-line testing system |
| CN102421495A (en) * | 2009-03-06 | 2012-04-18 | 迪奥尼克斯公司 | Fluid sample delivery system and method |
| CN201425558Y (en) * | 2009-06-04 | 2010-03-17 | 安徽农业大学 | Porous soil in-situ solution extractor |
| CN101592568A (en) * | 2009-06-19 | 2009-12-02 | 厦门大学 | Sailing multi-channel membrane filtration suspended particle sampling system |
| CN103197087A (en) * | 2012-01-09 | 2013-07-10 | 北京瑞利分析仪器有限公司 | Automatic sampler sampling needle used for strong acidic solution |
| CN103645292A (en) * | 2013-12-30 | 2014-03-19 | 北京雪迪龙科技股份有限公司 | Water-quality monitoring pre-treatment device and water quality monitoring system |
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Application publication date: 20141022 |