CN101021514B - Method for in-situ sampling, separating, enriching and measuring water body pollutant in water - Google Patents
Method for in-situ sampling, separating, enriching and measuring water body pollutant in water Download PDFInfo
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- CN101021514B CN101021514B CN2007100105501A CN200710010550A CN101021514B CN 101021514 B CN101021514 B CN 101021514B CN 2007100105501 A CN2007100105501 A CN 2007100105501A CN 200710010550 A CN200710010550 A CN 200710010550A CN 101021514 B CN101021514 B CN 101021514B
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Abstract
A method to sample in situ, separate, enrich and measure water pollution in waters contains: (1) A semi-permeable membrane is able to permeate detected substance. (2) High-molecular compound -polyvinyl alcohol (PVA) can be combined with detected substance. (3) Puts PVA into device and detaches it from detected waters by membrane. (4) Sets in waters for a period of time. (5) Takes out device located in waters to measure concentration and mean concentration of detected substance in high-molecular compound solution in membrane by atomic absorption spectrometry and visual spectrometry. It is characterized in that simple, economical, providing concentration and measurement in situ for much substance, has selectivity, quantitative measurement and dynamics of combined detected substance relates to characteristics of semi-permeable membrane.
Description
Technical field
The present invention relates to chemistry and environmental monitoring technology field, particularly a kind of in water body the method for in-situ sampling, separation, enrichment, measurement water pollutant.
Background technology
Environmental pollution has become more and more severeer social concern; environmental monitoring is as the important component part of environmental protection; once likened to eyes, sentry and the ruler of environmental protection visually; being the important channel that obtains environmental information, epistemic context variation, estimates environmental quality supervision blowdown situation, is the important technical of implementation and supervision environmental legislation, environmental standard.In the series of steps of environment monitoring and quality control, sampling is the basis of environmental monitoring, has often determined the confidence level of final sumbission.The environmental protection institution of some advanced countries very payes attention to the enrichment Sampling techniques of contaminant trace species in the developing water; original position passive sampling technology is as a kind of novel in recent ten years; cheap; easy to use; the widely used Environmental Water pollutant method of sampling; more and more be subjected to Environmental Analytical Chemistry researcher's extensive concern and developed rapidly; and be widely used in actual environment and the nearly ecosystem; original position passive sampling technology can be under the prerequisite that does not influence mother solution concentration online collection target detection material, the concentration that is accumulated in the monitored material in the sampling thief can truly reflect its actual concentration or time average concentration in tested systems.The original position passiveness sampling method demonstrates remarkable advantages as the method for sampling of the monitored material of a kind of water body.
Summary of the invention
The present invention mainly utilizes the characteristic group generation chemical reaction on monitored material in characteristic group on the macromolecular compound and the extraneous water body or the monitored material, reaches the purpose of in-situ sampling, enrichment and quantitative measurment.
The inventive method comprises: (1) a kind of semi-permeable diaphragm that can permeate monitored material; (2) contain the macromolecular compound that can combine with monitored material; (3) separated by semi-permeable diaphragm with tested water body at the inner macromolecular compound of device; (4) place certain hour in water body, the time of placement is 1 hour～1 year.(5) utilize the osmosis of film, after monitored material enters into the device inside of tunicle isolation in the tested water body, immediately by the macromolecular compound combination, thereby inside and outside film, form certain diffusion gradient, within a certain period of time, measured matter concentration, minute have quantitative relationship in the measured matter of film inner macromolecule compound combination and the tested water body, thereby reach the purpose of sampling, separation and enrichment; By measuring the amount of measured matter in the film inner macromolecule compound water solution, thereby reach the purpose of quantitative measurment.
Material in the solution can be represented by a simple equation:
M+nL→M(L)n
M: monitored material; L: in conjunction with phase (excessive); M (L) n: the complex compound that monitored material and macromolecular compound form.
In the present invention, macromolecular diffusion may be influenced by semi-permeable diaphragm.But simple metallic ion or micromolecule organic compound then can freely spread, and produce an effective coefficient of diffusion.This and they diffusion in water is as broad as long.Therefore the present invention allows molecular volume freely to spread less than the solable matter in semi-permeable diaphragm duct.
The used semi-permeable diaphragm that can permeate monitored material of this method is all kinds semi-permeable diaphragm or selective permeation film, and it allows to see through molecular weight more than or equal to 2000.In the inventive method, the semi-permeable diaphragm that can permeate monitored material has dialysis membrane, chromatographic paper, dialysis membrane, biological membrane, collodion film, viscose paper, parchment, animal's bladder film etc.
In the inventive method, contain the macromolecule that can combine with monitored material in the film inboard: its mean molecular weight should be greater than 3000, and its concentration of aqueous solution is 0.0001-1.0molL
-1, this macromolecular compound is a polyvinyl alcohol (PVA).If the semi-permeable diaphragm hole is little, then used high molecular mean molecular weight can be littler, if the semi-permeable diaphragm hole is big, then used high molecular mean molecular weight should be more greatly, total principle can only allow monitored material freedom to spread by semi-permeable diaphragm, and can not make the macromolecule of film inboard be penetrated into extraneous aqueous phase.
The used device of the inventive method is the device of a kind of in-situ sampling, separation, enrichment, measurement, and as shown in drawings: this device is that macromolecular compound is housed in container, with semi-permeable diaphragm it is sealed then, and is fixed by rubber gasket and binding clasp and gets final product.
Monitored pollutant comprises in the inventive method: (1) metallic element, as: Cu, Cd, Co, Zn, Pb, Ni, Cr, Fe, U, Mn, Ag, Sb, Hg, Be, Tl, Tu, Re, V, Ti; (2) nonmetalloid, as: B, As, Se.
Water body comprises described in the inventive method: the water in natural fresh water, natural mineralized water, sewage, potable water, recycle-water, the biosome in water, sediment and the soil.
In the inventive method, the characteristics of used macromolecular compound be they can both with monitored material generation chemical reaction, and firmly combine with monitored material, make that the concentration of free monitored material remains zero in the Polymer Solution of film inboard.
Medium-term and long-term placement of water body that a monitored material concentration constantly changes, can obtain at this moment between the mean concentration (C of monitored material in the system in (t) scope
m), C
m=C
Sample/ t, C in the formula
SampleFor measuring concentration.
The major advantage of this method has:
(1) simple, economy.
(2) can provide former site concentration.
(3) can measure multiple material.
(4) has selectivity.Be not to measure all materials in the nature water, can only measure those can be by the material of enrichment in combination mutually.
(5) quantitative measurment is with relevant in conjunction with the characteristic of the dynamics of monitored material of picked-up mutually and semi-permeable diaphragm.
(6) if a suitable semi-permeable diaphragm thickness is chosen, the transmission of material is only relevant with molecular diffusion, and transmission course of material and fluid dynamics are irrelevant.
Description of drawings
Accompanying drawing is in-situ sampling, separation, enrichment, measurement mechanism structural representation in the water body of the present invention.
Among the figure: 1 polytetrafluoroethylcontainer container, 2 macromolecular compound aqueous solution, 3 semi-permeable diaphragms, 4 pads, 5 binding clasps
Embodiment
Embodiment 1
After getting 2mL 0.0001M polyvinyl alcohol (PVA) (PVA) (calculating) volume of packing into and being the polyacrylic device of 2mL by hydroxyl concentration, with dialysis membrane device is sealed, totally 3, device is put into the water body of heavy metal pollution and placed the 1h taking-up, utilize the concentration of aas determination heavy metal, and calculate in standing time the mean concentration of heavy metal in the water body.
Embodiment 2
After getting 2mL 0.0001M PVA (calculating) volume of packing into and being the polyacrylic device of 2mL by hydroxyl concentration, with chromatographic paper device is sealed, totally 3, device is put into the water body of heavy metal pollution and placed the 1h taking-up, utilize the concentration of aas determination heavy metal, and calculate in standing time the mean concentration of heavy metal in the water body.
Embodiment 3
After getting 2mL 0.0001M PVA (calculating) volume of packing into and being the polyacrylic device of 2mL by hydroxyl concentration, with the collodion film device is sealed, totally 3, device is put into the water body of heavy metal pollution and placed the 1h taking-up, utilize the concentration of aas determination heavy metal, and calculate in standing time the mean concentration of heavy metal in the water body.
Embodiment 4
After getting 2mL 0.01M PVA (calculating) volume of packing into and being the polyacrylic device of 2mL by hydroxyl concentration, with dialysis membrane device is sealed, totally 3, device is put into the water body of heavy metal pollution and placed the 12h taking-up, utilize the concentration of aas determination heavy metal, and calculate in standing time the mean concentration of heavy metal in the water body.
Embodiment 5
After getting 2mL 0.01M PVA (calculating) volume of packing into and being the polyacrylic device of 2mL by hydroxyl concentration, with chromatographic paper device is sealed, totally 3, device is put into the water body of heavy metal pollution and placed the 12h taking-up, utilize the concentration of aas determination heavy metal, and calculate in standing time the mean concentration of heavy metal in the water body.
Embodiment 6
After getting 2mL 0.01M PVA (calculating) volume of packing into and being the polyacrylic device of 2mL by hydroxyl concentration, with the collodion film device is sealed, totally 3, device is put into the water body of heavy metal pollution and placed the 12h taking-up, utilize the concentration of aas determination heavy metal, and calculate in standing time the mean concentration of heavy metal in the water body.
Embodiment 7
After getting 2mL 0.02M PVA (calculating) volume of packing into and being the polyacrylic device of 2mL by hydroxyl concentration, with dialysis membrane device is sealed, totally 3, device is put into the water body of heavy metal pollution and placed the 12h taking-up, utilize the concentration of aas determination heavy metal, and calculate in standing time the mean concentration of heavy metal in the water body.
Embodiment 8
After getting 2mL 0.02M PVA (calculating) volume of packing into and being the polyacrylic device of 2mL by hydroxyl concentration, with chromatographic paper device is sealed, totally 3, device is put into the water body of heavy metal pollution and placed the 12h taking-up, utilize the concentration of aas determination heavy metal, and calculate in standing time the mean concentration of heavy metal in the water body.
Embodiment 9
After getting 2mL 0.02M PVA (calculating) volume of packing into and being the polyacrylic device of 2mL by hydroxyl concentration, with the collodion film device is sealed, totally 3, device is put into the water body of heavy metal pollution and placed the 12h taking-up, utilize the concentration of aas determination heavy metal, and calculate in standing time the mean concentration of heavy metal in the water body.
Embodiment 10
After getting 2mL 0.0001M polyvinyl alcohol (PVA) (PVA) (calculating) volume of packing into and being the polyacrylic device of 2mL by hydroxyl concentration, with dialysis membrane device is sealed, totally 3, device is put into the borate pollution or contain boratory water body placement 1h taking-up, utilize atomic absorption spectrography (AAS) or ultravioletvisible spectroscopy to measure the concentration of boron.
Embodiment 11
After getting 2mL 0.0001M PVA (calculating) volume of packing into and being the polyacrylic device of 2mL by hydroxyl concentration, with chromatographic paper device is sealed, totally 3, device is put into the borate pollution or contain boratory water body placement 1h taking-up, utilize atomic absorption spectrography (AAS) or ultravioletvisible spectroscopy to measure the concentration of boron.
Embodiment 12
After getting 2mL 0.0001M PVA (calculating) volume of packing into and being the polyacrylic device of 2mL by hydroxyl concentration, with the collodion film device is sealed, totally 3, device is put into the borate pollution or contain boratory water body placement 1h taking-up, utilize atomic absorption spectrography (AAS) or ultravioletvisible spectroscopy to measure the concentration of boron.
Embodiment 13
After getting 2mL 0.01M PVA (calculating) volume of packing into and being the polyacrylic device of 2mL by hydroxyl concentration, with dialysis membrane device is sealed, totally 3, device is put into the borate pollution or contain boratory water body placement 12h taking-up, utilize atomic absorption spectrography (AAS) or ultravioletvisible spectroscopy to measure the concentration of boron, and calculate in standing time the mean concentration of boron in the water body.
Embodiment 14
After getting 2mL 0.01M PVA (calculating) volume of packing into and being the polyacrylic device of 2mL by hydroxyl concentration, with chromatographic paper device is sealed, totally 3, device is put into the borate pollution or contain boratory water body placement 12h taking-up, utilize atomic absorption spectrography (AAS) or ultravioletvisible spectroscopy to measure the concentration of boron, and calculate in standing time the mean concentration of boron in the water body.
Embodiment 15
After getting 2mL 0.01M PVA (calculating) volume of packing into and being the polyacrylic device of 2mL by hydroxyl concentration, with the collodion film device is sealed, totally 3, device is put into the borate pollution or contain boratory water body placement 12h taking-up, utilize atomic absorption spectrography (AAS) or ultravioletvisible spectroscopy to measure the concentration of boron, and calculate in standing time the mean concentration of boron in the water body.
Embodiment 16
After getting 2mL 0.02M PVA (calculating) volume of packing into and being the polyacrylic device of 2mL by hydroxyl concentration, with dialysis membrane device is sealed, totally 3, device is put into the borate pollution or contain boratory water body placement 12h taking-up, utilize atomic absorption spectrography (AAS) or ultravioletvisible spectroscopy to measure the concentration of boron, and calculate in standing time the mean concentration of boron in the water body.
Embodiment 17
After getting 2mL 0.02M PVA (calculating) volume of packing into and being the polyacrylic device of 2mL by hydroxyl concentration, with chromatographic paper device is sealed, totally 3, device is put into the borate pollution or contain boratory water body placement 12h taking-up, utilize atomic absorption spectrography (AAS) or ultravioletvisible spectroscopy to measure the concentration of boron, and calculate in standing time the mean concentration of boron in the water body.
Embodiment 18
After getting 2mL 0.02M PVA (calculating) volume of packing into and being the polyacrylic device of 2mL by hydroxyl concentration, with the collodion film device is sealed, totally 3, device is put into the borate pollution or contain boratory water body placement 12h taking-up, utilize atomic absorption spectrography (AAS) or ultravioletvisible spectroscopy to measure the concentration of boron, and calculate in standing time the mean concentration of boron in the water body.
Embodiment 19
After getting 2mL 0.0001M polyvinyl alcohol (PVA) (PVA) (calculating) volume of packing into and being the polyacrylic device of 2mL by hydroxyl concentration, with dialysis membrane device is sealed, totally 3, device is put into the water body placement 1h taking-up that vanadate pollutes or contain vanadate, utilize atomic absorption spectrography (AAS) or ultravioletvisible spectroscopy to measure the concentration of vanadium.
Embodiment 20
After getting 2mL 0.0001M PVA (calculating) volume of packing into and being the polyacrylic device of 2mL by hydroxyl concentration, with chromatographic paper device is sealed, totally 3, device is put into the water body placement 1h taking-up that vanadate pollutes or contain vanadate, utilize atomic absorption spectrography (AAS) or ultravioletvisible spectroscopy to measure the concentration of vanadium.
Embodiment 21
After getting 2mL 0.0001M PVA (calculating) volume of packing into and being the polyacrylic device of 2mL by hydroxyl concentration, with the collodion film device is sealed, totally 3, device is put into the water body placement 1h taking-up that vanadate pollutes or contain vanadate, utilize atomic absorption spectrography (AAS) or ultravioletvisible spectroscopy to measure the concentration of vanadium.
Embodiment 22
After getting 2mL 0.01M PVA (calculating) volume of packing into and being the polyacrylic device of 2mL by hydroxyl concentration, with dialysis membrane device is sealed, totally 3, device is put into the water body placement 12h taking-up that vanadate pollutes or contain vanadate, utilize atomic absorption spectrography (AAS) or ultravioletvisible spectroscopy to measure the concentration of vanadium, and calculate in standing time the mean concentration of vanadium in the water body.
Embodiment 23
After getting 2mL 0.01M PVA (calculating) volume of packing into and being the polyacrylic device of 2mL by hydroxyl concentration, with chromatographic paper device is sealed, totally 3, device is put into the water body placement 12h taking-up that vanadate pollutes or contain vanadate, utilize atomic absorption spectrography (AAS) or ultravioletvisible spectroscopy to measure the concentration of vanadium, and calculate in standing time the mean concentration of vanadium in the water body.
Embodiment 24
After getting 2mL 0.01M PVA (calculating) volume of packing into and being the polyacrylic device of 2mL by hydroxyl concentration, with the collodion film device is sealed, totally 3, device is put into the water body placement 12h taking-up that vanadate pollutes or contain vanadate, utilize atomic absorption spectrography (AAS) or ultravioletvisible spectroscopy to measure the concentration of vanadium, and calculate in standing time the mean concentration of vanadium in the water body.
Embodiment 25
After getting 2mL 0.02M PVA (calculating) volume of packing into and being the polyacrylic device of 2mL by hydroxyl concentration, with dialysis membrane device is sealed, totally 3, device is put into the water body placement 12h taking-up that vanadate pollutes or contain vanadate, utilize atomic absorption spectrography (AAS) or ultravioletvisible spectroscopy to measure the concentration of vanadium, and calculate in standing time the mean concentration of vanadium in the water body.
Embodiment 26
After getting 2mL 0.02M PVA (calculating) volume of packing into and being the polyacrylic device of 2mL by hydroxyl concentration, with chromatographic paper device is sealed, totally 3, device is put into the water body placement 12h taking-up that vanadate pollutes or contain vanadate, utilize atomic absorption spectrography (AAS) or ultravioletvisible spectroscopy to measure the concentration of vanadium, and calculate in standing time the mean concentration of vanadium in the water body.
Embodiment 27
After getting 2mL 0.02M PVA (calculating) volume of packing into and being the polyacrylic device of 2mL by hydroxyl concentration, with the collodion film device is sealed, totally 3, device is put into the water body placement 12h taking-up that vanadate pollutes or contain vanadate, utilize atomic absorption spectrography (AAS) or ultravioletvisible spectroscopy to measure the concentration of vanadium, and calculate in standing time the mean concentration of vanadium in the water body.
Embodiment 28
After getting 2mL 0.0001M polyvinyl alcohol (PVA) (PVA) (calculating) volume of packing into and being the polyacrylic device of 2mL by hydroxyl concentration, with dialysis membrane device is sealed, totally 3, device is put into the water body placement 1h taking-up that stibate pollutes or contain stibate, utilize atomic absorption spectrography (AAS) or ultravioletvisible spectroscopy to measure the concentration of antimony.
Embodiment 29
After getting 2mL 0.0001M PVA (calculating) volume of packing into and being the polyacrylic device of 2mL by hydroxyl concentration, with chromatographic paper device is sealed, totally 3, device is put into the water body placement 1h taking-up that stibate pollutes or contain stibate, utilize atomic absorption spectrography (AAS) or ultravioletvisible spectroscopy to measure the concentration of antimony.
Embodiment 30
After getting 2mL 0.0001M PVA (calculating) volume of packing into and being the polyacrylic device of 2mL by hydroxyl concentration, with the collodion film device is sealed, totally 3, device is put into the water body placement 1h taking-up that stibate pollutes or contain stibate, utilize atomic absorption spectrography (AAS) or ultravioletvisible spectroscopy to measure the concentration of antimony.
Embodiment 31
After getting 2mL 0.01M PVA (calculating) volume of packing into and being the polyacrylic device of 2mL by hydroxyl concentration, with dialysis membrane device is sealed, totally 3, device is put into the water body placement 12h taking-up that stibate pollutes or contain stibate, utilize atomic absorption spectrography (AAS) or ultravioletvisible spectroscopy to measure the concentration of antimony, and calculate in standing time the mean concentration of antimony in the water body.
Embodiment 32
After getting 2mL 0.01M PVA (calculating) volume of packing into and being the polyacrylic device of 2mL by hydroxyl concentration, with chromatographic paper device is sealed, totally 3, device is put into the water body placement 12h taking-up that stibate pollutes or contain stibate, utilize atomic absorption spectrography (AAS) or ultravioletvisible spectroscopy to measure the concentration of antimony, and calculate in standing time the mean concentration of antimony in the water body.
Embodiment 33
After getting 2mL 0.01M PVA (calculating) volume of packing into and being the polyacrylic device of 2mL by hydroxyl concentration, with the collodion film device is sealed, totally 3, device is put into the water body placement 12h taking-up that stibate pollutes or contain stibate, utilize atomic absorption spectrography (AAS) or ultravioletvisible spectroscopy to measure the concentration of antimony, and calculate in standing time the mean concentration of antimony in the water body.
Embodiment 34
After getting 2mL 0.02M PVA (calculating) volume of packing into and being the polyacrylic device of 2mL by hydroxyl concentration, with dialysis membrane device is sealed, totally 3, device is put into the water body placement 12h taking-up that stibate pollutes or contain stibate, utilize atomic absorption spectrography (AAS) or ultravioletvisible spectroscopy to measure the concentration of antimony, and calculate in standing time the mean concentration of antimony in the water body.
Embodiment 35
After getting 2mL 0.02M PVA (calculating) volume of packing into and being the polyacrylic device of 2mL by hydroxyl concentration, with chromatographic paper device is sealed, totally 3, device is put into the water body placement 12h taking-up that stibate pollutes or contain stibate, utilize atomic absorption spectrography (AAS) or ultravioletvisible spectroscopy to measure the concentration of antimony, and calculate in standing time the mean concentration of antimony in the water body.
Embodiment 36
After getting 2mL 0.02M PVA (calculating) volume of packing into and being the polyacrylic device of 2mL by hydroxyl concentration, with the collodion film device is sealed, totally 3, device is put into the water body placement 12h taking-up that stibate pollutes or contain stibate, utilize atomic absorption spectrography (AAS) or ultravioletvisible spectroscopy to measure the concentration of antimony, and calculate in standing time the mean concentration of antimony in the water body.
Embodiment 37
After getting 2mL 0.0001M polyvinyl alcohol (PVA) (PVA) (calculating) volume of packing into and being the polyacrylic device of 2mL by hydroxyl concentration, with dialysis membrane device is sealed, totally 3, device is put into the water body placement 1h taking-up that titanate pollutes or contain titanate, utilize atomic absorption spectrography (AAS) or ultravioletvisible spectroscopy to measure the concentration of titanium.
Embodiment 38
After getting 2mL 0.0001M PVA (calculating) volume of packing into and being the polyacrylic device of 2mL by hydroxyl concentration, with chromatographic paper device is sealed, totally 3, device is put into the water body placement 1h taking-up that titanate pollutes or contain titanate, utilize atomic absorption spectrography (AAS) or ultravioletvisible spectroscopy to measure the concentration of titanium.
Embodiment 39
After getting 2mL 0.0001M PVA (calculating) volume of packing into and being the polyacrylic device of 2mL by hydroxyl concentration, with the collodion film device is sealed, totally 3, device is put into the water body placement 1h taking-up that titanate pollutes or contain titanate, utilize atomic absorption spectrography (AAS) or ultravioletvisible spectroscopy to measure the concentration of titanium.
Embodiment 40
After getting 2mL 0.01M PVA (calculating) volume of packing into and being the polyacrylic device of 2mL by hydroxyl concentration, with dialysis membrane device is sealed, totally 3, device is put into the water body placement 12h taking-up that titanate pollutes or contain titanate, utilize atomic absorption spectrography (AAS) or ultravioletvisible spectroscopy to measure the concentration of titanium, and calculate in standing time the mean concentration of titanium in the water body.
Embodiment 41
After getting 2mL 0.01M PVA (calculating) volume of packing into and being the polyacrylic device of 2mL by hydroxyl concentration, with chromatographic paper device is sealed, totally 3, device is put into the water body placement 12h taking-up that titanate pollutes or contain titanate, utilize atomic absorption spectrography (AAS) or ultravioletvisible spectroscopy to measure the concentration of titanium, and calculate in standing time the mean concentration of titanium in the water body.
Embodiment 42
After getting 2mL 0.01M PVA (calculating) volume of packing into and being the polyacrylic device of 2mL by hydroxyl concentration, with the collodion film device is sealed, totally 3, device is put into the water body placement 12h taking-up that titanate pollutes or contain titanate, utilize atomic absorption spectrography (AAS) or ultravioletvisible spectroscopy to measure the concentration of titanium, and calculate in standing time the mean concentration of titanium in the water body.
Embodiment 43
After getting 2mL 0.02M PVA (calculating) volume of packing into and being the polyacrylic device of 2mL by hydroxyl concentration, with dialysis membrane device is sealed, totally 3, device is put into the water body placement 12h taking-up that titanate pollutes or contain titanate, utilize atomic absorption spectrography (AAS) or ultravioletvisible spectroscopy to measure the concentration of titanium, and calculate in standing time the mean concentration of titanium in the water body.
Embodiment 44
After getting 2mL 0.02M PVA (calculating) volume of packing into and being the polyacrylic device of 2mL by hydroxyl concentration, with chromatographic paper device is sealed, totally 3, device is put into the water body placement 12h taking-up that titanate pollutes or contain titanate, utilize atomic absorption spectrography (AAS) or ultravioletvisible spectroscopy to measure the concentration of titanium, and calculate in standing time the mean concentration of titanium in the water body.
Embodiment 45
After getting 2mL 0.02M PVA (calculating) volume of packing into and being the polyacrylic device of 2mL by hydroxyl concentration, with the collodion film device is sealed, totally 3, device is put into the water body placement 12h taking-up that titanate pollutes or contain titanate, utilize atomic absorption spectrography (AAS) or ultravioletvisible spectroscopy to measure the concentration of titanium, and calculate in standing time the mean concentration of titanium in the water body.
Embodiment 46
After getting 2mL 0.02M PVA (calculating) volume of packing into and being the polyacrylic device of 2mL by hydroxyl concentration, with dialysis membrane device is sealed, totally 21, device is put into may be by the water body of boron, antimony, vanadium, titanium pollution, placed for 1 week, take out 3 every day, utilize boron, antimony, vanadium, titanium in the aas determination water body, and calculate in standing time the mean concentration of boron, antimony, vanadium, titanium in the water body.
Embodiment 47
After getting 2mL 0.02M PVA (calculating) volume of packing into and being the polyacrylic device of 2mL by hydroxyl concentration, with chromatographic paper device is sealed, totally 21, device is put into may be by the water body of boron, antimony, vanadium, titanium pollution, placed for 1 week, take out 3 every day, utilize boron, antimony, vanadium, titanium in the aas determination water body, and calculate in standing time the mean concentration of boron, antimony, vanadium, titanium in the water body.
Embodiment 48
After getting 2mL 0.02M PVA (calculating) volume of packing into and being the polyacrylic device of 2mL by hydroxyl concentration, with the collodion film device is sealed, totally 21, device is put into may be by the water body of boron, antimony, vanadium, titanium pollution, placed for 1 week, take out 3 every day, utilize boron, antimony, vanadium, titanium in the aas determination water body, and calculate the mean concentration of boron, antimony, vanadium, titanium in the standing time internal water system.
Embodiment 49
After getting 2mL 0.05M PVA (calculating) volume of packing into and being the polyacrylic device of 2mL by hydroxyl concentration, with dialysis membrane device is sealed, totally 36, device is put into may be by the water body of boron, antimony, vanadium, titanium pollution, placed 1 year, take out 3 every month, utilize the concentration of boron, antimony, vanadium, titanium in the aas determination water body, and calculate the mean concentration of boron, antimony, vanadium, titanium in the standing time internal water system, and can understand boron, antimony, vanadium, titanium concentration and the relation in season and boron, antimony, vanadium, titanium concentration situation of change in the whole year.
Embodiment 50
After getting 2mL 0.05M PVA (calculating) volume of packing into and being the polyacrylic device of 2mL by hydroxyl concentration, with chromatographic paper device is sealed, totally 36, device is put into may be by the water body of boron, antimony, vanadium, titanium pollution, placed 1 year, take out 3 every month, utilize the concentration of boron, antimony, vanadium, titanium in the aas determination water body, and calculate the mean concentration of boron, antimony, vanadium, titanium in the standing time internal water system, and can understand boron, antimony, vanadium, titanium concentration and the relation in season and boron, antimony, vanadium, titanium concentration situation of change in the whole year.
Embodiment 51
After getting 2mL 0.05M PVA (calculating) volume of packing into and being the polyacrylic device of 2mL by hydroxyl concentration, with the collodion film device is sealed, totally 36, device is put into may be by the water body of boron, antimony, vanadium, titanium pollution, placed 1 year, take out 3 every month, utilize the concentration of boron, antimony, vanadium, titanium in the aas determination water body, and calculate the mean concentration of boron, antimony, vanadium, titanium in the standing time internal water system, and can understand boron, antimony, vanadium, titanium concentration and the relation in season and boron, antimony, vanadium, titanium concentration situation of change in the whole year.
Claims (3)
1. the method for an in-situ sampling in water body, separation, enrichment, measurement water pollutant, this method comprises: (1) a kind of semi-permeable diaphragm that can permeate monitored material; (2) contain the macromolecular compound polyvinyl alcohol that can combine with monitored material; (3) macromolecular compound polyvinyl alcohol is placed in the device separated by semi-permeable diaphragm with tested water body; (4) in water body, placed 1 hour～1 year; (5) take out the device be placed in the water body, measure the concentration of monitored material in the film inner macromolecule compound water solution, and calculate in standing time the mean concentration of monitored material in the water body; It is characterized in that: the mean molecular weight of described macromolecular compound polyvinyl alcohol is greater than 3000, and its concentration of aqueous solution is 0.0001～1.0molL
-1, the concentration of free monitored material remains zero in the Polymer Solution of semi-permeable diaphragm inboard.
2. as claimed in claim 1 in water body the method for in-situ sampling, separation, enrichment, measurement water pollutant, it is characterized in that described monitored material comprises: (1) metallic element is selected from Cu, Cd, Co, Zn, Pb, Ni, Cr, Fe, U, Mn, Ag, Hg, Sb, Be, Tl, Tu, Re, V, Ti, (2) nonmetalloid is selected from B, As, Se.
3. as claimed in claim 1 in water body the method for in-situ sampling, separation, enrichment, measurement water pollutant, it is characterized in that described water body comprises: the water in natural fresh water, natural mineralized water, sewage, potable water, recycle-water, the biosome in the water and soil earth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN102393448B (en) * | 2011-10-20 | 2015-06-03 | 东北大学 | Method for selectively and quantitatively collecting Cd in water environment |
| CN102507261B (en) * | 2011-10-20 | 2015-06-03 | 东北大学 | Method for selectively and quantitatively collecting arsenic in water environment |
| SG11201607065XA (en) * | 2014-02-28 | 2016-09-29 | Univ Singapore | An in situ real time monitoring system for trace analytes in water |
| CN105806795A (en) * | 2014-12-29 | 2016-07-27 | 北京有色金属研究总院 | Rapid analysis method for antimony in iron manganese ore sample |
| CN105115788B (en) * | 2015-08-21 | 2018-06-08 | 厦门大学 | Water pollutant time weighted average concentration sampler based on osmotic pumps and Solid Phase Extraction |
| CN106769919A (en) * | 2016-11-25 | 2017-05-31 | 防城港市质量技术监督局 | A kind of assay method of heavy metal in waste water Cr |
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| GB1466150A (en) * | 1973-12-08 | 1977-03-02 | Mitsubishi Rayon Co | Process for removing metal ion from aqueous solution |
| CN1804575A (en) * | 2005-12-27 | 2006-07-19 | 南开大学 | Semipermeable membrane for sampling organic contaminant in enriched water environment |
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| GB1466150A (en) * | 1973-12-08 | 1977-03-02 | Mitsubishi Rayon Co | Process for removing metal ion from aqueous solution |
| CN1804575A (en) * | 2005-12-27 | 2006-07-19 | 南开大学 | Semipermeable membrane for sampling organic contaminant in enriched water environment |
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