CN1077548C - Solid phase extraction of multiring hydrocarbon from drinking water - Google Patents
Solid phase extraction of multiring hydrocarbon from drinking water Download PDFInfo
- Publication number
- CN1077548C CN1077548C CN 97105868 CN97105868A CN1077548C CN 1077548 C CN1077548 C CN 1077548C CN 97105868 CN97105868 CN 97105868 CN 97105868 A CN97105868 A CN 97105868A CN 1077548 C CN1077548 C CN 1077548C
- Authority
- CN
- China
- Prior art keywords
- water sample
- polycyclic aromatic
- aromatic hydrocarbons
- phase column
- bonding phase
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 235000020188 drinking water Nutrition 0.000 title claims abstract description 8
- 239000003651 drinking water Substances 0.000 title claims abstract description 8
- 238000002414 normal-phase solid-phase extraction Methods 0.000 title claims description 8
- 239000004215 Carbon black (E152) Substances 0.000 title 1
- 229930195733 hydrocarbon Natural products 0.000 title 1
- 150000002430 hydrocarbons Chemical class 0.000 title 1
- 125000005575 polycyclic aromatic hydrocarbon group Chemical group 0.000 claims abstract description 21
- 239000012071 phase Substances 0.000 claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 18
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 claims abstract description 11
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 6
- 238000012986 modification Methods 0.000 claims description 12
- 230000004048 modification Effects 0.000 claims description 12
- 239000008399 tap water Substances 0.000 claims description 10
- 235000020679 tap water Nutrition 0.000 claims description 10
- 238000003828 vacuum filtration Methods 0.000 claims description 8
- 238000010521 absorption reaction Methods 0.000 claims description 4
- 229910001873 dinitrogen Inorganic materials 0.000 claims description 4
- 230000035622 drinking Effects 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 2
- 239000011159 matrix material Substances 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract description 2
- 230000007547 defect Effects 0.000 abstract 1
- 238000005188 flotation Methods 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 1
- 229910052757 nitrogen Inorganic materials 0.000 abstract 1
- 239000007790 solid phase Substances 0.000 abstract 1
- 238000004945 emulsification Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000000622 liquid--liquid extraction Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000012074 organic phase Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 239000002594 sorbent Substances 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
- Sampling And Sample Adjustment (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The present invention provides a solid phase extracting method of polycyclic aromatic hydrocarbons of drinking water. A quantitative drinking water sample is taken, isopropyl alcohol is added into the drinking water sample to modify in a basal body way, and the modified water sample is sucked and filtered by vacuum. Thus, when the water sample passes through a C18 bonded phase column, the polycyclic aromatic hydrocarbons in the water sample are adsorbed on the C18 bonded phase column. After dried by nitrogen flow, the polycyclic aromatic hydrocarbons are eluted by methylene chloride to cause the polycyclic aromatic hydrocarbon to be analyzed, and the metered volume of the polycyclic aromatic hydrocarbons is collected in a concentrating appliance to measure. The present invention overcomes the defects of high cost, easy flotation, great test error, complex operation means, etc. of the existing liquid-liquid extracting method, and is a technology which is worth popularizing.
Description
The present invention relates to water treatment field, specifically a kind of Solid-Phase Extraction method of tap water polycyclic aromatic hydrocarbons.
At present, the beneficiation technologies of polycyclic aromatic hydrocarbons in the tap water mainly is the liquid-liquid extraction method that adopts American National Environmental Protection Agency to recommend both at home and abroad.The operation principles of this kind method is according to the different solubilities of polycyclic aromatic hydrocarbons in water and organic phase, carry out repeated dispensing and reach the purpose of enrichment, there is following shortcoming in it: one, a large amount of ultrapure solvents of needs, and not only cost is higher, and the environmental pollution degree is bigger; Two, be easy to interface emulsification, concentration effect is undesirable; Three, circulation ratio is not really stable, and test error is bigger; Four, operational means is loaded down with trivial details, labour intensity is bigger.Therefore how substituting the enrichment of prior art to polycyclic aromatic hydrocarbons in the tap water, is that a difficult problem to be solved is arranged.
The objective of the invention is provides the Solid-Phase Extraction method of the tap water polycyclic aromatic hydrocarbons that a kind of cost is lower, the interface is difficult for emulsification, test error is less, easy and simple to handle for solving above-mentioned technical deficiency part.It can make the many cyclophanes in the tap water directly obtain effective enrichment, for the content of monitoring polycyclic aromatic hydrocarbons in tap water provides scientific basis.
The objective of the invention is to be achieved through the following technical solutions: the Solid-Phase Extraction method of tap water polycyclic aromatic hydrocarbons, accurately measure the water sample of drinking of 500-1000ml with graduated cylinder, and add Virahol therein and carry out matrix modification as analytical pure, making the degree of Virahol in drinking water sample is 5-25%, thorough mixing is the water sample after the modification after evenly, water sample after the modification is carried out vacuum filtration by the C18 bonding phase column, make water sample after its modification the time by the C18 bonding phase column, wherein contained polycyclic aromatic hydrocarbons is adsorbed on the C18 bonding phase column, finishes vacuum filtration work thus; After vacuum filtration work is finished, nitrogen gas stream with 30ml/s was carried out drying treatment 5-30 minute the C18 bonding phase column, methylene dichloride with 0.5-5ml carries out wash-out to the C18 bonding phase column at last, makes the polycyclic aromatic hydrocarbons of absorption on it resolve, and it is to be measured to collect constant volume in the concentrated utensil.
Advantage of the present invention is: one, scientific and reasonable, it adopts the solid phase extraction concentration post of selling on the market that is used for extracting the water micropollutant, the i.e. C18 bonding phase column of forming by C18 bonding phase sorbent material, tetrafluoroethylene sintering pad and polypropylene bucket, enrichment for the tap water polycyclic aromatic hydrocarbons, only need to use a spot of organic solvent, not only greatly reduce cost, and reduced pollution environment; Two, it adopts the Solid-Phase Extraction mode, has avoided the phenomenon of interface emulsification, makes concentration effect more satisfactory; Three, circulation ratio is more stable, and test error is less; Four, operational means is easy, and labour intensity is less.
Embodiment 1: the water sample of drinking of accurately measuring 500ml with graduated cylinder, add Virahol and carry out basic modification, making the degree of Virahol in drinking water sample is 5%, after thorough mixing is even, water sample after vacuum filtration is with modification is by the C18 bonding phase column, and then with the nitrogen gas stream of 30ml/s with dry 5 minutes of C18 bonding phase column, the methylene dichloride with 0.5ml carries out wash-out to the C18 bonding phase column at last, make the polycyclic aromatic hydrocarbons of absorption on it resolve, it is to be measured to collect constant volume in the concentrated utensil.
Embodiment 2: the water sample of drinking of accurately measuring 1000ml with graduated cylinder, add Virahol and carry out basic modification, making the degree of Virahol in drinking water sample is 25%, after thorough mixing is even, water sample after vacuum filtration is with modification is by the C18 bonding phase column, and then with the nitrogen gas stream of 30ml/s with dry 30 minutes of C18 bonding phase column, the methylene dichloride with 5ml carries out wash-out to the C18 bonding phase column at last, make the polycyclic aromatic hydrocarbons of absorption on it resolve, it is to be measured to collect constant volume in the concentrated utensil.
Claims (1)
1, the Solid-Phase Extraction method of tap water polycyclic aromatic hydrocarbons is characterized in that; Accurately measure the water sample of drinking of 500-1000ml with graduated cylinder, and add Virahol therein and carry out matrix modification as analytical pure, making the degree of Virahol in drinking water sample is 5-25%, thorough mixing is the water sample after the modification after evenly, water sample after the modification is carried out vacuum filtration by the C18 bonding phase column, make water sample after its modification the time, wherein contained polycyclic aromatic hydrocarbons is adsorbed on the C18 bonding phase column, finish vacuum filtration work thus by the C18 bonding phase column; After vacuum filtration work is finished, nitrogen gas stream with 30ml/s was carried out drying treatment 5-30 minute the C18 bonding phase column, methylene dichloride with 0.5-5ml carries out wash-out to the C18 bonding phase column at last, makes the polycyclic aromatic hydrocarbons of absorption on it resolve, and it is to be measured to collect constant volume in the concentrated utensil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97105868 CN1077548C (en) | 1997-05-27 | 1997-05-27 | Solid phase extraction of multiring hydrocarbon from drinking water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97105868 CN1077548C (en) | 1997-05-27 | 1997-05-27 | Solid phase extraction of multiring hydrocarbon from drinking water |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1200352A CN1200352A (en) | 1998-12-02 |
| CN1077548C true CN1077548C (en) | 2002-01-09 |
Family
ID=5168162
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97105868 Expired - Fee Related CN1077548C (en) | 1997-05-27 | 1997-05-27 | Solid phase extraction of multiring hydrocarbon from drinking water |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1077548C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2896792B1 (en) | 2006-01-27 | 2008-07-18 | Millipore Corp | SYSTEM AND METHOD FOR PURIFYING WATER |
| CN100504377C (en) * | 2007-02-05 | 2009-06-24 | 同济大学 | Extraction and Purification Determination Method of Polycyclic Aromatic Hydrocarbons in Soil |
-
1997
- 1997-05-27 CN CN 97105868 patent/CN1077548C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1200352A (en) | 1998-12-02 |
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |