CN203191359U - Platform device for collecting water sample trace substances - Google Patents
Platform device for collecting water sample trace substances Download PDFInfo
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- CN203191359U CN203191359U CN 201320206397 CN201320206397U CN203191359U CN 203191359 U CN203191359 U CN 203191359U CN 201320206397 CN201320206397 CN 201320206397 CN 201320206397 U CN201320206397 U CN 201320206397U CN 203191359 U CN203191359 U CN 203191359U
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Abstract
The utility model relates to a platform device for collecting water trace substances, comprising a sampling system, a filtering system, a chromatographic system and an elution system. The platform device is characterized in that a sampling port of the sampling system is connected with a first-stage filter of the filtering system by a water pump, the first-stage filter is connected with a second-stage filter which is connected with a constant flow pump of the chromatographic system by a steady flow groove, and the constant flow pump is connected with a collecting container through a chromatographic column of the elution system. The platform device for collecting water sample trace substances designed by the utility model is novel, and is used for collecting water sample trace substances, has a simple structure, and is easily assembled.
Description
[technical field]
The utility model relates to stratographic analysis and preparing technical field, specifically, is a kind of water sample trace materials platform apparatus for capturing.
[background technology]
Along with the fast-developing and modern development of industry and agriculture that urbanization is built, unrest that has aggravated sanitary sewage and industrial waste water arranged and left about etc., causes the very big pollution of the face of land and groundwater resource.It is reported that national surface water overall water quality belonged to intermediate pollution in 2007, in 745 surface water sections of country's monitoring, IV, V class, the section ratio of bad V class water quality is respectively 40%, 32% and 28%.78 trunk rivers in the whole nation have 54 to be polluted, and have half section to be polluted in the seven big water systems, and 86% section, city is polluted and exceeded standard.The urban waters in the whole nation 90% is seriously polluted, and 50% water source, cities and towns does not meet drinking water standard, and 40% water source can not be drunk, and each metropolitan underground water of the whole nation is also polluted in various degree.There is hidden danger in drinking water safety, grievous injury the people's health and Environmental Rights and Interests.An investigation according to The World Health Organization (WHO) shows that the disease in the whole world 80% causes by drinking contaminated water, and the whole world 50% children's death causes owing to potable water is contaminated.
Water environment and mankind's activity are closely bound up, and the generation of a series of water pollution accidents more and more comes into one's own monitoring water environment.According to statistics, water pollutant has reached kind more than 2,000.Divide from the kind of pollutant, water pollutant mainly is divided into contaminants of chemical origin, physical pollution thing and biological pollutant.Contaminants of chemical origin comprises organic and mineral compound, and wherein organism pollutes and more and more is subject to people's attention.Current monitoring water environment mainly is that the feature pollutant of industrial sewage discharging is monitored, and as volatile phenol, prussiate, fluoride, sulfide, COD, heavy metal etc., pollution discharge standard has been stipulated environmental standard and the emission standard of each pollutant.Organic pollutant category is various, wherein much health is had stronger damaging effect, the organism that has needs only μ g/L level, even the content of ng/L level, just be enough to endanger population health and ecologic environment, and this class overall target of COD and BOD can't reflect the situation of water body organic contamination.Therefore, be necessary to set up perfect organic pollutants in water body, the detection system of objectionable impurities, improve the detection sensitivity of micro-content organism pollutant in the water body.But at the detection of trace materials in the water sample, often sensitivity is limited for conventional detection means, therefore needs the highly sensitive detecting instrument of development or develops sample pre-treatments technology and device efficiently.
Chromatographic technique is as a kind of method for separating and analyzing, is to utilize in the potpourri component in two alternate distribution, thereby reaches the purpose of separation, has a very wide range of applications in fields such as analytical chemistry, organic chemistry, biological chemistries.Red, orange, green, blue, yellow (ROGBY) has also obtained widespread use in monitoring water environment, as the analysis of negative ion, organism, surfactant in the water and the morphological analysis of metallic element etc.Can be divided into analytic type and preparative scale chromatography two big classes according to purpose, preparative chromatography is commonly used to preparation, purifying substance.Preparative chromatography has the big characteristics of analytic sample amount, by the mode of continuously a large amount of sample introductions, can realize the concentration effect of small amount of matter in a large amount of samples.
[utility model content]
The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of water sample trace materials platform apparatus for capturing is provided; The utility model takes full advantage of the characteristics of the big sample size of preparative chromatography, micro substance in the water sample constantly is attracted to fixingly to be gone up mutually, by a spot of intensive polar solvent its wash-out is also received again, play the effect of enrichment, make trace materials reach the concentration that can be detected, improve the sensitivity of water pollution detection.
The purpose of this utility model is achieved through the following technical solutions:
A kind of water sample trace materials platform apparatus for capturing, it comprises sampling system, filtering system, chromatographic system and elution system, it is characterized in that the thief hatch of sampling system links to each other with the grade one filter of filtering system by water pump, grade one filter links to each other with secondary filter again, secondary filter links to each other with the constant flow pump of chromatographic system by stable chute, and constant flow pump is by chromatographic column and the coated lycopene of elution system; Described filtering system is made up of two-stage filter, and the material of grade one filter filter core is gauze or cotton, and the material of secondary filter filter core is river sand or silica gel fine grained.
Be provided with the eluting solvent storage tank between described stable chute and the constant flow pump.
Be provided with valve between described stable chute and the eluting solvent storage tank.
Described chromatographic column or be the chromatogram ball.
Described high-power suction pump requires sample size to be as the criterion to satisfy the short time detection, can be volumetric pump, vane pump, peristaltic pump etc., and flow velocity can be 20～200L/min.
Described filtering system is made up of two-stage filter, the grade one filter filter core can be gauze, cotton etc., be used for filtering large volume floating thing in the water sample, the secondary filter filter core can be fine graineds such as river sand, silica gel, be used for filtering small floating thing or suspension in the water sample, filter core can regularly replace.
Described stable chute is made of the container of a fixed volume, and volume is 5～1000L, water sample is played the effect of temporary transient storage and buffer stream speed.
Described chromatographic system is made up of pump and chromatographic column/ball etc., pump provides pressure that water sample is pumped in chromatographic column/ball, flow velocity satisfies detection and requires to be as the criterion, can be 1～20L/min, chromatographic column/ball volume 1～2L, the fixed phase stuffing of filling requires to select according to detecting, can be C18, C8 and silica gel etc., also can be the filler of recyclable recycling, be as the criterion can adsorb target substance, particle diameter 20～100 μ m.
Described elution system, formed by solvent storage tank, eluting solvent, valve and receiving vessel etc., the solvent storage tank is in order to store eluting solvent, can be glass container, volume 1～5L, eluting solvent be intensive polar solvent, can be methyl alcohol, acetonitrile etc., valve is used for controlling the process of elution program, and receiving vessel can be glass container, volume 0.1～2L.
Eluate in this device receiving vessel can be used for efficient liquid phase chromatographic analysis, or further preparation.
Sample acquisition system flow velocity of the present utility model is big, and the chromatographic system capacity is big, thereby can handle the water sample of large volume at short notice, thereby improves the accumulation ability of trace materials.
A kind of application process of water sample trace materials platform apparatus for capturing, concrete steps are: water pump drives sample introduction port processing water sample, by filtering system, the suspension in the water sample is filtered totally, it is temporary to enter stable chute, be pressed into chromatographic column/ball by constant flow pump again, weigh material in the water sample and carry out specific adsorption, before reaching the seepage volume of chromatographic column, the conversion of operation valve, with intensive polar solvent adsorbed components is eluted and collects, realized the enrichment to trace materials in the water sample.
Compared with prior art, good effect of the present utility model is:
Technological process of the present utility model is relatively simple, and is easy to operate, and the direct economy cost is low, and adaptability is strong, and process conditions are easily adjusted, and plant issue solves easily, and working condition is better etc.
The utility model utilizes the big advantage of preparative chromatography applied sample amount, with its creationary being applied in the environmental monitoring, has not only expanded the range of application of preparative chromatography, and has improved the detection sensitivity of water pollutant in the environmental monitoring.This method can also be improved the problem that trace materials is difficult to detect in the puzzlement environment measuring department water body for many years, can also be used for the preparation of trace materials, not only can produce economic benefit, and major contribution has also been made in environment measuring.
A kind of novel water sample trace materials platform apparatus for capturing has also been made in the utility model design, and is simple in structure, be easy to assembling.
[description of drawings]
Sampling platform device design diagram in Fig. 1 the utility model;
The enrichment chromatogram of the caffeine aqueous sample of Fig. 2 a direct injected 10 μ L2 μ g/L;
Behind Fig. 2 b on-line preconcentration, the enrichment chromatogram of sample introduction 10 μ L dilution back eluent;
Label in the accompanying drawing is respectively: 1, thief hatch, 2, water pump, 3, grade one filter, 4, secondary filter, 5, stable chute, 6, valve, 7, the eluting solvent storage tank, 8, constant flow pump, 9, chromatographic column, 10, collection container.
[embodiment]
The embodiment of a kind of water sample trace materials of the utility model platform apparatus for capturing below is provided.
Embodiment 1
See also accompanying drawing 1, a kind of water sample trace materials platform apparatus for capturing, it comprises sampling system, filtering system, chromatographic system and elution system is characterized in that, the thief hatch 1 of sampling system links to each other with the grade one filter 3 of filtering system by water pump 2, grade one filter links to each other with secondary filter 4 again, and secondary filter links to each other with the constant flow pump 8 of chromatographic system by stable chute 5, and constant flow pump links to each other with collection container 10 by the chromatographic column 9 of elution system.
Be provided with eluting solvent storage tank 7 between described stable chute and the constant flow pump.
Be provided with valve 6 between described stable chute and the eluting solvent storage tank.
Described chromatographic column or be the chromatogram ball.
Assemble at first according to condition design pump discharge, filtrator, chromatographic column/ball capacity and selection eluting solvent, and to the sampling platform apparatus system.For avoiding chromatographic column/ball capacity overload, need to measure the seepage volume of chromatographic column/ball before the analysis.Enter chromatographic column/ball behind sample process sampling system, filtrator, the stable chute, water pollutant is progressively carried out on-line preconcentration by specific adsorption at the filler of chromatographic column/ball, sample size reaches before the seepage volume, peak area increases with the increase of sampling volume, when peak area no longer increased with sampling volume, the sample solution volume of its turning point correspondence was exactly the seepage volume.Because the difference of pollutant character in the sample, same chromatographic column/ball has different seepage volumes to different samples.In experiment, because of Simulated Water body pollution thing, compound concentration is the aqueous sample of 20 μ g/L, selects the chromatographic column/ball of C18 filler for use with coffee, and constant flow pump flow velocity 1.0L/min does not have seepage to occur behind the enrichment 5min.
In order to verify the feasibility of described device, we have carried out following experiment.Be that the caffeine aqueous sample of 2 μ g/L is simulating pollution thing water sample with concentration, at first sample introduction 10 μ L carry out liquid-phase chromatographic analysis; Adopt described device to handle then, enter stable chute, constant flow pump flow velocity 1.0L/min behind sample process sampling system, the filtrator, chromatographic column/ball on-line preconcentration 10min adopts methanol-eluted fractions, collects eluent, get an amount of thin up, sample introduction 10 μ L carry out liquid-phase chromatographic analysis.Result such as accompanying drawing 2a shown in the 2b, do not detect signal in chromatogram after the primary sample direct injected, and through after the described device enrichment, tangible signal then occurred.
The above only is preferred implementation of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model design; can also make some improvements and modifications, these improvements and modifications also should be considered as in the protection domain of the present utility model.
Claims (4)
1. water sample trace materials platform apparatus for capturing, it comprises sampling system, filtering system, chromatographic system and elution system, it is characterized in that the thief hatch of sampling system links to each other with the grade one filter of filtering system by water pump, grade one filter links to each other with secondary filter again, secondary filter links to each other with the constant flow pump of chromatographic system by stable chute, and constant flow pump is by chromatographic column and the coated lycopene of elution system; Described filtering system is made up of two-stage filter, and the material of grade one filter filter core is gauze or cotton, and the material of secondary filter filter core is river sand or silica gel fine grained.
2. a kind of water sample trace materials platform apparatus for capturing as claimed in claim 1 is characterized in that, is provided with the eluting solvent storage tank between described stable chute and the constant flow pump.
3. a kind of water sample trace materials platform apparatus for capturing as claimed in claim 2 is characterized in that, is provided with valve between described stable chute and the eluting solvent storage tank.
4. a kind of water sample trace materials platform apparatus for capturing as claimed in claim 1 is characterized in that, described chromatographic column or be the chromatogram ball.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320206397 CN203191359U (en) | 2013-04-22 | 2013-04-22 | Platform device for collecting water sample trace substances |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320206397 CN203191359U (en) | 2013-04-22 | 2013-04-22 | Platform device for collecting water sample trace substances |
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| Publication Number | Publication Date |
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| CN203191359U true CN203191359U (en) | 2013-09-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201320206397 Expired - Fee Related CN203191359U (en) | 2013-04-22 | 2013-04-22 | Platform device for collecting water sample trace substances |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103245749A (en) * | 2013-04-22 | 2013-08-14 | 华东理工大学 | Platform device for collecting trace materials in water sample, and application of platform device |
| CN111855373A (en) * | 2020-07-26 | 2020-10-30 | 复旦大学 | Device and method for online measurement of trace polar organic matters in atmospheric concentrated particulate matters |
-
2013
- 2013-04-22 CN CN 201320206397 patent/CN203191359U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103245749A (en) * | 2013-04-22 | 2013-08-14 | 华东理工大学 | Platform device for collecting trace materials in water sample, and application of platform device |
| CN111855373A (en) * | 2020-07-26 | 2020-10-30 | 复旦大学 | Device and method for online measurement of trace polar organic matters in atmospheric concentrated particulate matters |
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| Date | Code | Title | Description |
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| 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: 20130911 Termination date: 20170422 |