CN108693330B - Using the time as the device and preparation method thereof of chromium content in coordinate half-quantitative detection soil - Google Patents
Using the time as the device and preparation method thereof of chromium content in coordinate half-quantitative detection soil Download PDFInfo
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- 238000001514 detection method Methods 0.000 title claims abstract description 87
- 239000011651 chromium Substances 0.000 title claims abstract description 54
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 title claims abstract description 47
- 229910052804 chromium Inorganic materials 0.000 title claims abstract description 47
- 239000002689 soil Substances 0.000 title claims abstract description 47
- 238000002360 preparation method Methods 0.000 title claims abstract description 23
- 239000000835 fiber Substances 0.000 claims abstract description 75
- 239000000758 substrate Substances 0.000 claims abstract description 54
- 238000010521 absorption reaction Methods 0.000 claims abstract description 41
- 238000007654 immersion Methods 0.000 claims abstract description 22
- 238000012360 testing method Methods 0.000 claims description 30
- IXPNQXFRVYWDDI-UHFFFAOYSA-N 1-methyl-2,4-dioxo-1,3-diazinane-5-carboximidamide Chemical compound CN1CC(C(N)=N)C(=O)NC1=O IXPNQXFRVYWDDI-UHFFFAOYSA-N 0.000 claims description 26
- 239000000661 sodium alginate Substances 0.000 claims description 26
- 235000010413 sodium alginate Nutrition 0.000 claims description 26
- 229940005550 sodium alginate Drugs 0.000 claims description 26
- 229920000742 Cotton Polymers 0.000 claims description 25
- 229920000728 polyester Polymers 0.000 claims description 24
- DSSYKIVIOFKYAU-XCBNKYQSSA-N (R)-camphor Chemical compound C1C[C@@]2(C)C(=O)C[C@@H]1C2(C)C DSSYKIVIOFKYAU-XCBNKYQSSA-N 0.000 claims description 17
- 241001494496 Leersia Species 0.000 claims description 17
- 235000014676 Phragmites communis Nutrition 0.000 claims description 17
- 241000758789 Juglans Species 0.000 claims description 16
- 235000009496 Juglans regia Nutrition 0.000 claims description 16
- 235000020234 walnut Nutrition 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- OAKJQQAXSVQMHS-UHFFFAOYSA-N Hydrazine Chemical compound NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 claims description 8
- 241000723346 Cinnamomum camphora Species 0.000 claims description 7
- 238000011002 quantification Methods 0.000 claims description 7
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 6
- BGNXCDMCOKJUMV-UHFFFAOYSA-N Tert-Butylhydroquinone Chemical compound CC(C)(C)C1=CC(O)=CC=C1O BGNXCDMCOKJUMV-UHFFFAOYSA-N 0.000 claims description 6
- 229960000935 dehydrated alcohol Drugs 0.000 claims description 6
- 239000004250 tert-Butylhydroquinone Substances 0.000 claims description 6
- 235000019281 tert-butylhydroquinone Nutrition 0.000 claims description 6
- KSPIHGBHKVISFI-UHFFFAOYSA-N Diphenylcarbazide Chemical compound C=1C=CC=CC=1NNC(=O)NNC1=CC=CC=C1 KSPIHGBHKVISFI-UHFFFAOYSA-N 0.000 claims description 5
- OTEKOJQFKOIXMU-UHFFFAOYSA-N 1,4-bis(trichloromethyl)benzene Chemical compound ClC(Cl)(Cl)C1=CC=C(C(Cl)(Cl)Cl)C=C1 OTEKOJQFKOIXMU-UHFFFAOYSA-N 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 239000002994 raw material Substances 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 229920002678 cellulose Polymers 0.000 claims 1
- 239000001913 cellulose Substances 0.000 claims 1
- 239000007788 liquid Substances 0.000 claims 1
- 239000002304 perfume Substances 0.000 claims 1
- 235000013599 spices Nutrition 0.000 claims 1
- 229920002994 synthetic fiber Polymers 0.000 claims 1
- 229910001430 chromium ion Inorganic materials 0.000 abstract description 16
- 239000000243 solution Substances 0.000 description 28
- 240000005636 Dryobalanops aromatica Species 0.000 description 11
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 10
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 6
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 5
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000029087 digestion Effects 0.000 description 4
- 229910017604 nitric acid Inorganic materials 0.000 description 4
- 239000004753 textile Substances 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- 235000006040 Prunus persica var persica Nutrition 0.000 description 2
- 125000002252 acyl group Chemical group 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 235000019504 cigarettes Nutrition 0.000 description 2
- 238000004737 colorimetric analysis Methods 0.000 description 2
- 239000012153 distilled water Substances 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 238000010422 painting Methods 0.000 description 2
- 239000006228 supernatant Substances 0.000 description 2
- HVCOBJNICQPDBP-UHFFFAOYSA-N 3-[3-[3,5-dihydroxy-6-methyl-4-(3,4,5-trihydroxy-6-methyloxan-2-yl)oxyoxan-2-yl]oxydecanoyloxy]decanoic acid;hydrate Chemical compound O.OC1C(OC(CC(=O)OC(CCCCCCC)CC(O)=O)CCCCCCC)OC(C)C(O)C1OC1C(O)C(O)C(O)C(C)O1 HVCOBJNICQPDBP-UHFFFAOYSA-N 0.000 description 1
- 244000144730 Amygdalus persica Species 0.000 description 1
- 229930186217 Glycolipid Natural products 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 240000005809 Prunus persica Species 0.000 description 1
- RMXTYBQNQCQHEU-UHFFFAOYSA-N ac1lawpn Chemical compound [Cr]#[Cr] RMXTYBQNQCQHEU-UHFFFAOYSA-N 0.000 description 1
- 229960001126 alginic acid Drugs 0.000 description 1
- 235000010443 alginic acid Nutrition 0.000 description 1
- 239000000783 alginic acid Substances 0.000 description 1
- 229920000615 alginic acid Polymers 0.000 description 1
- 150000004781 alginic acids Chemical class 0.000 description 1
- 238000001391 atomic fluorescence spectroscopy Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229960003431 cetrimonium Drugs 0.000 description 1
- RLGQACBPNDBWTB-UHFFFAOYSA-N cetyltrimethylammonium ion Chemical compound CCCCCCCCCCCCCCCC[N+](C)(C)C RLGQACBPNDBWTB-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical compound [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000005562 fading Methods 0.000 description 1
- 238000000705 flame atomic absorption spectrometry Methods 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 231100000003 human carcinogen Toxicity 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 239000002574 poison Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 238000013441 quality evaluation Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000012764 semi-quantitative analysis Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000012086 standard solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/24—Earth materials
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/24—Earth materials
- G01N33/245—Earth materials for agricultural purposes
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Food Science & Technology (AREA)
- Analytical Chemistry (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Medicinal Chemistry (AREA)
- Physics & Mathematics (AREA)
- Remote Sensing (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
- Investigating Or Analysing Materials By The Use Of Chemical Reactions (AREA)
Abstract
The present invention is using the time as the device and preparation method thereof of chromium content in coordinate half-quantitative detection soil, including immersing area, climb region, colour developing area and grip zone, the climb region is between the immersion area and the colour developing area, the colour developing area is between the climb region and the grip zone, the immersion area, the climb region, the colour developing area and the grip zone share detection substrate, have water-absorption fiber floor in the upper and lower surface of the detection substrate for immersing area and the climb region.The device developing time and chromium ion concentration have response relation, can provide a kind of novel detection method with chromium ion concentration in the detection soil of sxemiquantitative for the detection of chromium ion.
Description
Technical field
The present invention relates to Soil K+adsorptions.Contain more particularly, to one kind by chromium in coordinate half-quantitative detection soil of the time
Device of amount and preparation method thereof.
Background technique
The form that is primarily present of Cr is Cr (III) and Cr (VI) in nature, and Cr (III) is human body glycolipid eubolism institute
Required microelement, and Cr (VI) chemical activity is high, dissolubility is good, has strong oxidizing property, has high osmosis to skin, poison
Big 100 times of property ratio Cr (III) or more.Cr (VI) is classified as human carcinogen by nineteen ninety international cancer research institution (IARC),
It is one of the element strictly managed in the laws and regulations of the various countries such as RoHS Directive.
Chromium can exist in the form of chromate in the soil, be mainly derived from cosmetic material inferior, leather preparation, metal
Component chromium plating part, commercial pigments etc. enter soil with industrial wastewater, can not degrade, for a long time can polluted underground water.It can be made
Object absorbs, into food chain, to be detrimental to health." the edible rapid test paper environment of State Environmental Protection Administration's publication at present
Criteria of quality evaluation " in (HJ/T332-2006), it is desirable that the content of total chromium content in soil is less than 150mg/kg.
The detection method for the chromium having built up at present mainly has sampling Graphite Furnace Atomic Absorption range method, flame atomic absorption spectrometry
Method, atomic fluorescence spectrometry, but these detection methods need large-scale instrument and equipment and professional technician, costly, behaviour
Make complexity, it is time-consuming long, it has not been convenient to carry out execute-in-place in field, be not suitable for the detection of Field Force.
Patent of invention [CN103412125B] describes a kind of " chromium ion quickly detects gold test strip and preparation method thereof ",
It is fast to detect speed, testing result, high sensitivity can be gone out in 5min, detection is limited to 5ng/mL, but this method needs immune animal,
Antibody is obtained, resulting antibody also needs to use colloid gold label, needs professional that could operate.
Patent of invention [CN102121905A] describes one kind " for detecting the test paper of heavy metal chromium and its preparation in water quality
Method ", cetrimonium bronmide, polyvinyl alcohol, citric acid and diphenylcarbazide film forming agent be coated on substrate film and hold
It on slide glass, is then assembled in test strips, when detection, chromium ion solubility, this method determinand is detected using photoelectric sensor
Dosage is few, detection time 3min, and detection is limited to 1.9mol/L, but photoelectric sensor used in this method needs to be equipped with
Chip, display, diode etc. are also not suitable for field personnel's carrying.
Patent of invention [CN104034725B] describes " a kind of the quick detection test paper of trace chromium and preparation method thereof ", should
Although method is suitble to fast-field evaluation, easy to carry, change since color can occur over time for standard color card
Become and everyone subjective judgement difference to color contrast, all leading to the judgement of testing result, there are biggish errors.
Summary of the invention
It is an object of the present invention to provide it is a kind of suitable for it is live quickly judge chromium content magnitude range in soil with
Time is response signal using the time as the device and preparation method of chromium content in coordinate half-quantitative detection soil.
In order to achieve the above objectives, the present invention adopts the following technical solutions: using the time as chromium in coordinate half-quantitative detection soil
The device of content, including immerse area, climb region, colour developing area and grip zone, the climb region are located at the immersion area and described show
Between color area, the colour developing area is the immersion area, the climb region, described between the climb region and the grip zone
Develop the color the shared detection substrate in area and the grip zone, in the upper and lower surface of the detection substrate for immersing area and the climb region
There is water-absorption fiber layer.
It is above-mentioned using the time as the device of chromium content in coordinate half-quantitative detection soil, the detection substrate is by Leersia Sw, reed
Reed, cinnamomum camphora tree bark and walnut shell are made according to fast quantification filter paper manufacturing process, Leersia Sw, reed, cinnamomum camphora tree bark and core
The proportion of peach shell is as follows: Leersia Sw is 20-30 parts by weight, reed 10-15 parts by weight, cinnamomum camphora tree bark 45-50 parts by weight and core
Peach shell 5-15 parts by weight.
It is above-mentioned using the time as the device of chromium content in coordinate half-quantitative detection soil, it is described immerse area water-absorption fiber floor on
Be covered with cotton layer, the specification of the cotton layer is as follows: 45 X 45 of yarn count, 128 X 68 of density, warp thread and weft yarn are cotton fiber
It is made.
It is above-mentioned using the time as the device of chromium content in coordinate half-quantitative detection soil, the water-absorption fiber layer is that superabsorbent water is fine
It ties up layer (Nantong Jiang Chao textile technology Co., Ltd), the specification of the superabsorbent fiber layer are as follows: 0.1-0.2g/cm2。
It is above-mentioned using the time as the device of chromium content in coordinate half-quantitative detection soil, on the water-absorption fiber layer of the climb region
Be covered with polyester fiber layer, the specification of the polyester fiber layer is as follows: 75 X 75 of yarn count, 133 X 73 of density, warp thread and weft yarn are equal
For polyester fiber.
It is above-mentioned using the time as the device of chromium content in coordinate half-quantitative detection soil, the water-absorption fiber layer and the detection
Between substrate, between the water-absorption fiber layer and the cotton layer and between the water-absorption fiber layer and polyester fiber layer
It is bonded by the sodium alginate soln that concentration is 1-3wt%.
It is above-mentioned using the time as the device of chromium content in coordinate half-quantitative detection soil, it is described immerse area length be 0.5-
1cm, the length of the climb region are 4-6cm.
It is above-mentioned using the time as the device of chromium content in coordinate half-quantitative detection soil, it is described detection substrate width be 0.5-
1cm。
It is above-mentioned using the time as the device of chromium content in coordinate half-quantitative detection soil, it is described colour developing area detection substrate on glue
Colour developing test paper is posted, the length in the colour developing area is 1-1.5cm；The colour developing method for preparing test paper is as follows: will test substrate leaching
It steeps in chromophoric solution, the chromophoric solution is that 0.5-1.5g diphenylcarbazide and 1.2-1.5g tert-butylhydroquinone are dissolved in
It is made in 20-30mL dehydrated alcohol, after impregnating 10-15min, takes out, dry 30-60min at 30 DEG C.
Using the time as the preparation method of the device of chromium content in coordinate half-quantitative detection soil, include the following steps:
(1) preparation detection substrate: the raw material of preparation detection substrate is by Leersia Sw, reed, cinnamomum camphora tree bark and walnut shell group
Proportion at, Leersia Sw, reed, cinnamomum camphora tree bark and walnut shell is as follows: Leersia Sw is 20-30 parts by weight, reed 10-15 weight
Part, cinnamomum camphora tree bark 45-50 parts by weight and walnut shell 5-15 parts by weight；According to fast quantification, filter paper preparation process is made；
(2) it functional regional division: is marked off on the detection substrate and immerses area, climb region, colour developing area and grip zone, institute
Climb region is stated between the immersion area and the colour developing area, the colour developing area be located at the climb region and the grip zone it
Between, the immersion area, the climb region, the colour developing area and the grip zone share detection substrate, the immersion area and described
There is water-absorption fiber layer in the upper and lower surface of the detection substrate of climb region, the water-absorption fiber layer is superabsorbent fiber layer (Nantong
Jiang Chao textile technology Co., Ltd), the specification of the superabsorbent fiber layer are as follows: 0.1-0.2g/cm2；The water-absorption fiber layer with
It is bonded between the detection substrate by the sodium alginate soln that concentration is 1-3wt%, the painting of the sodium alginate soln of 1-3wt%
The amount of covering is 1cm2Coat 0.025mL；
(3) preparing width is that 0.5-1cm immerses area: it is covered with cotton layer on the water-absorption fiber floor for immersing area, it is described
The specification of cotton layer is as follows: 45 X 45 of yarn count, 128 X 68 of density, warp thread and weft yarn are that cotton fiber is made；The water-absorption fiber
It is bonded between layer and the cotton layer by the sodium alginate soln that concentration is 1-3wt%, the sodium alginate soln of 1-3wt%
Coated weight is 1cm2Coat 0.025mL；
(4) preparing width is the climb region 4-6cm: being covered with polyester fiber layer on the water-absorption fiber layer of the climb region, institute
The specification for stating polyester fiber layer is as follows: 75 X 75 of yarn count, 133 X 73 of density, warp thread and weft yarn are polyester fiber；The water suction
It is bonded between fibrous layer and the polyester fiber layer by the sodium alginate soln that concentration is 1-3wt%, the alginic acid of 1-3wt%
The coated weight of sodium solution is 1cm2Coat 0.025mL；
(5) preparing width is 1-1.5cm colour developing area: it is pasted with colour developing test paper on the detection substrate in the colour developing area, it is described
Colour developing method for preparing test paper is as follows: will test substrate and is soaked in chromophoric solution, the chromophoric solution is 0.5-1.5g hexichol carbon
Two hydrazine of acyl and 1.2-1.5g tert-butylhydroquinone, which are dissolved in 20-30mL dehydrated alcohol, to be made, and after impregnating 10-15min, is taken out,
Dry 30-60min at 30 DEG C；The sodium alginate for being 1-3wt% by concentration between the detection substrate and the colour developing test paper
Solution bonding, the coated weight of the sodium alginate soln of 1-3wt% are 1cm2Coat 0.025mL；
(6) it suppresses: suppressing 5-10min in the case where pressure is 0.1-0.5MPa pressure；
(7) dry: 30-40 DEG C of dry 48h or more；
(8) cut: according to the length for immersing area be 0.5-1cm, the length of the climb region is 4-6cm, described aobvious
The length in color area is 1-1.5cm, the length of the grip zone is 2-3cm and the width of the detection substrate be 0.5-1cm into
Row is cut.
Beneficial effects of the present invention are as follows:
Provided by the invention using the time is the device of chromium content in coordinate half-quantitative detection soil for detecting chromium in soil
When content, chromium ion concentration has response relation in developing time and solution, can chromium in the detection soil of live rapid semi-quantitative
Ion concentration, and avoid using error caused by colorimetric card bring human error and colorimetric card colour fading, it is chromium ion
Detection provides a kind of novel detection method.
Detailed description of the invention
Specific embodiments of the present invention will be described in further detail with reference to the accompanying drawing.
Fig. 1 present invention is using the time as the structural schematic diagram of the device of chromium content in coordinate half-quantitative detection soil.
1- cotton layer；2- polyester fiber layer；3- colour developing test paper；4- superabsorbent fiber layer；5- detects substrate；The grip zone 6-.
Specific embodiment
In order to illustrate more clearly of the present invention, the present invention is done further below with reference to preferred embodiments and drawings
It is bright.Similar component is indicated in attached drawing with identical appended drawing reference.It will be appreciated by those skilled in the art that institute is specific below
The content of description is illustrative and be not restrictive, and should not be limited the scope of the invention with this.
Embodiment 1
It include immersing area, climb region, colour developing area and holding using the time as the device of chromium content in coordinate half-quantitative detection soil
Area is held, between the immersion area and the colour developing area, the colour developing area is located at the climb region and described for the climb region
Between grip zone, the immersion area, the climb region, the colour developing area and the grip zone share detection substrate, the immersion
There is water-absorption fiber floor in the upper and lower surface of the detection substrate in area and the climb region.The detection substrate by Leersia Sw, reed,
Cinnamomum camphora tree bark and walnut shell are made that (fast quantification filter paper manufacturing process is existing skill according to fast quantification filter paper manufacturing process
Art, details are not described herein), Leersia Sw, reed, the proportion of cinnamomum camphora tree bark and walnut shell are as follows: Leersia Sw is 26 kilograms, reed
13 kilograms, 48 kilograms of cinnamomum camphora tree bark and 10 kilograms of walnut shell.It is covered with cotton layer on the water-absorption fiber floor for immersing area, institute
The specification for stating cotton layer is as follows: 45 X 45 of yarn count, 128 X 68 of density, warp thread and weft yarn are that cotton fiber is made.The water suction is fine
Dimension layer is superabsorbent fiber layer (Nantong Jiang Chao textile technology Co., Ltd), the specification of the superabsorbent fiber layer are as follows: 0.15g/
cm2.Polyester fiber layer is covered on the water-absorption fiber layer of the climb region, the specification of the polyester fiber layer is as follows: yarn count 75
X 75,133 X 73 of density, warp thread and weft yarn are polyester fiber.It is described between the water-absorption fiber layer and the detection substrate
It is by concentration between water-absorption fiber layer and the cotton layer and between the water-absorption fiber layer and polyester fiber layer
The sodium alginate soln of 1wt% bonds.The length for immersing area is 1cm, and the length of the climb region is 5cm.The detection
The width of substrate is 1cm.Colour developing test paper is pasted on the detection substrate in the colour developing area, the length in the colour developing area is 1.5cm；
The colour developing method for preparing test paper is as follows: will test substrate and is soaked in chromophoric solution, the chromophoric solution is 1.5g hexichol carbon
Two hydrazine of acyl and 1.5g tert-butylhydroquinone, which are dissolved in 30mL dehydrated alcohol, to be made, and after impregnating 10min, is taken out, dry at 30 DEG C
60min。
Embodiment 2
Using the time as the preparation method of the device of chromium content in coordinate half-quantitative detection soil, include the following steps:
(1) preparation detection substrate: the raw material of preparation detection substrate is by Leersia Sw, reed, cinnamomum camphora tree bark and walnut shell group
Proportion at, Leersia Sw, reed, cinnamomum camphora tree bark and walnut shell is as follows: Leersia Sw is 26 kilograms, 13 kilograms of reed, cinnamomum camphora tree
48 kilograms and 10 kilograms of walnut shell of bark；According to fast quantification, filter paper preparation process is made；
(2) it functional regional division: is marked off on the detection substrate and immerses area, climb region, colour developing area and grip zone, institute
Climb region is stated between the immersion area and the colour developing area, the colour developing area be located at the climb region and the grip zone it
Between, the immersion area, the climb region, the colour developing area and the grip zone share detection substrate, the immersion area and described
There is water-absorption fiber layer in the upper and lower surface of the detection substrate of climb region, the water-absorption fiber layer is superabsorbent fiber layer (Nantong
Jiang Chao textile technology Co., Ltd), the specification of the superabsorbent fiber layer are as follows: 0.15g/cm2；The water-absorption fiber layer with it is described
It detects and is bonded between substrate by the sodium alginate soln that concentration is 1wt%, the coated weight of sodium alginate soln is 1cm2Coating
0.025mL；
(3) it prepares the immersion area that width is 1cm: being covered with cotton layer, the cotton on the water-absorption fiber floor for immersing area
The specification of layer of cloth is as follows: 45 X 45 of yarn count, 128 X 68 of density, warp thread and weft yarn are that cotton fiber is made；The water-absorption fiber layer
It is bonded between the cotton layer by the sodium alginate soln that concentration is 1wt%, the coated weight of sodium alginate soln is 1cm2
Coat 0.025mL；
(4) it prepares the climb region that width is 5cm: being covered with polyester fiber layer on the water-absorption fiber layer of the climb region, institute
The specification for stating polyester fiber layer is as follows: 75 X 75 of yarn count, 133 X 73 of density, warp thread and weft yarn are polyester fiber；The water suction
It is bonded between fibrous layer and the polyester fiber layer by the sodium alginate soln that concentration is 1wt%, the painting of sodium alginate soln
The amount of covering is 1cm2Coat 0.025mL；
(5) it prepares the colour developing area that width is 1.5cm: being pasted with colour developing test paper on the detection substrate in the colour developing area, it is described
Colour developing method for preparing test paper is as follows: will test substrate and is soaked in chromophoric solution, the chromophoric solution is 1.5g hexichol phosphinylidyne two
Hydrazine and 1.5g tert-butylhydroquinone, which are dissolved in 30mL dehydrated alcohol, to be made, and after impregnating 10min, is taken out, dry at 30 DEG C
60min；It is bonded between the detection substrate and the colour developing test paper by the sodium alginate soln that concentration is 1wt%, 1wt%'s
The coated weight of sodium alginate soln is 1cm2Coat 0.025mL；
(6) it suppresses: suppressing 10min in the case where pressure is 0.3MPa pressure；
(7) dry: 40 DEG C of dry 72h；
(8) cut: the length according to the grip zone is 2cm and the width of the detection substrate is that 1cm is cut out
It cuts, the length after cutting up to the immersion area is 1cm, the length of the climb region is 5cm, the length in the colour developing area is
1.5cm using the time as the device of chromium content in coordinate half-quantitative detection soil.
Embodiment 3
Chromium content detection is carried out by the device of chromium content in coordinate half-quantitative detection soil of the time to what embodiment 2 obtained
Test:
(1) preparation of standard solution: the chromium standard reserving solution of different volumes is drawn respectively into normal capacity bottle, and is added
1wt% sulfuric acid -1wt% the phosphoric acid solution of volumetric flask volume 10%, is diluted to scale, and adjusting pH value is 7, shakes up, stands
20min, obtaining chromium ion concentration is 60mg/kg, 65mg/kg, 70mg/kg, 75mg/kg, 80mg/kg, 85mg/kg, 90mg/
The solution of kg, 120mg/kg, 150mg/kg, 180mg/kg and 200mg/kg.
(2) it detects: area will be immersed and be immersed in solution to be detected, timing, gained testing result such as 1 institute of table are started simultaneously at
Show.
The corresponding developing time of the different chromium ion concentrations of table 1
As it can be seen from table 1 using the device of detection chromium content prepared by the present invention, in chromium concn and immersion chromium-containing solution
Time have a response relation, but chromium concn and the time immersed in chromium solution are not linear relationship, can be with semi-quantitative analysis chromium
Chromium ion concentration in solution.
Embodiment 4
Contain chromium soil with taking A, soil is handled: being cleared up with the concentrated sulfuric acid and concentrated phosphoric acid, quality containing chromium soil,
The volume ratio of the volume of the concentrated sulfuric acid and the concentrated phosphoric acid is 1g:25mL:10mL；It is heated to soil sample to emerge white cigarette, add
Concentrated nitric acid is until soil sample becomes white, and the volume ratio of the quality and concentrated nitric acid containing chromium soil is 1g:10mL, and digestion solution is Huang
Green, then reaction terminates；Digestion solution after reaction is transferred in normal capacity bottle, adjusting pH value is 7, adds distilled water dilute
It releases to scale, and shakes up, stand 12-20min, supernatant liquor is taken to be measured.
Scene, which uses to detect using the time as the device of chromium content in coordinate half-quantitative detection soil prepared by embodiment 2, determines
After appearance in solution chromium ion concentration, developing time 48s can confirms after constant volume in solution with sxemiquantitative at the concentration of chromium ion
Between 90-100mg/kg.Soil sample is taken back into laboratory, quantitative determines through laboratory and (uses diphenylcarbazide colorimetric method),
Chromium ion concentration is 92mg/kg.
Embodiment 5
Contain chromium soil with taking B, soil is handled: being cleared up with the concentrated sulfuric acid and concentrated phosphoric acid, quality containing chromium soil,
The volume ratio of the volume of the concentrated sulfuric acid and the concentrated phosphoric acid is 1g:25mL:10mL；It is heated to soil sample to emerge white cigarette, add
Concentrated nitric acid is until soil sample becomes white, and the volume ratio of the quality and concentrated nitric acid containing chromium soil is 1g:10mL, and digestion solution is Huang
Green, then reaction terminates；Digestion solution after reaction is transferred in normal capacity bottle, adjusting pH value is 7, adds distilled water dilute
It releases to scale, and shakes up, stand 12-20min, supernatant liquor is taken to be measured.
Scene, which uses to detect using the time as the device of chromium content in coordinate half-quantitative detection soil prepared by embodiment 2, determines
After appearance in solution chromium ion concentration, developing time 36s can confirms after constant volume in solution with sxemiquantitative at the concentration of chromium ion
Between 150-180mg/kg.Soil sample is taken back into laboratory, quantitative determines through laboratory and (uses diphenylcarbazide colorimetric method),
Chromium ion concentration is 168mg/kg.
Obviously, the above embodiment of the present invention be only to clearly illustrate example of the present invention, and not be pair
The restriction of embodiments of the present invention may be used also on the basis of the above description for those of ordinary skill in the art
To make other variations or changes in different ways, all embodiments can not be exhaustive here, it is all to belong to this hair
The obvious changes or variations that bright technical solution is extended out are still in the scope of protection of the present invention.
Claims (2)
1. using the time as the device of chromium content in coordinate half-quantitative detection soil, which is characterized in that including immerse area, climb region,
Colour developing area and grip zone, between the immersion area and the colour developing area, the colour developing area is located at described climb for the climb region
It rises between area and the grip zone, the immersion area, the climb region, the colour developing area and the grip zone share detection base
There is water-absorption fiber floor in the upper and lower surface of the detection substrate of material, the immersion area and the climb region；
The detection substrate is made of Leersia Sw, reed, cinnamomum camphora tree bark and walnut shell according to fast quantification filter paper manufacturing process,
Leersia Sw, reed, the proportion of cinnamomum camphora tree bark and walnut shell are as follows: Leersia Sw be 20-30 parts by weight, reed 10-15 parts by weight,
Cinnamomum camphora tree bark 45-50 parts by weight and walnut shell 5-15 parts by weight；
It is covered with cotton layer on the water-absorption fiber floor for immersing area, the specification of the cotton layer is as follows: 45 X 45 of yarn count, density
128 X 68, warp thread and weft yarn are that cotton fiber is made；
The water-absorption fiber layer is superabsorbent fiber layer, the specification of the superabsorbent fiber layer are as follows: 0.1-0.2g/cm2；
Polyester fiber layer is covered on the water-absorption fiber layer of the climb region, the specification of the polyester fiber layer is as follows: yarn count 75
X 75,133 X 73 of density, warp thread and weft yarn are polyester fiber；
It is between the water-absorption fiber layer and the cotton layer and described between the water-absorption fiber layer and the detection substrate
It is bonded by the sodium alginate soln that concentration is 1-3wt% between water-absorption fiber layer and polyester fiber layer；
The length for immersing area is 0.5-1cm, and the length of the climb region is 4-6cm；
The width of the detection substrate is 0.5-1cm；
Colour developing test paper is pasted on the detection substrate in the colour developing area, the length in the colour developing area is 1-1.5cm；The colour developing examination
Paper is soaked in chromophoric solution the preparation method is as follows: will test substrate, and the chromophoric solution is 0.5-1.5g diphenylcarbazide
It is dissolved in 20-30mL dehydrated alcohol and being made with 1.2-1.5g tert-butylhydroquinone, after impregnating 10-15min, take out, at 30 DEG C
Dry 30-60min.
2. using the time as the preparation method of the device of chromium content in coordinate half-quantitative detection soil, which is characterized in that including as follows
Step:
(1) preparation detection substrate: the raw material of preparation detection substrate is made of Leersia Sw, reed, cinnamomum camphora tree bark and walnut shell, Lee
Family name's standing grain, reed, the proportion of cinnamomum camphora tree bark and walnut shell are as follows: Leersia Sw is 20-30 parts by weight, reed 10-15 parts by weight, perfume (or spice)
Camphor tree bark 45-50 parts by weight and walnut shell 5-15 parts by weight；According to fast quantification, filter paper preparation process is made；
(2) functional regional division: marking off on the detection substrate and immerse area, climb region, colour developing area and grip zone, described to climb
Rise area between the immersion area and the colour developing area, the colour developing area between the climb region and the grip zone,
The immersion area, the climb region, the colour developing area and the grip zone share detection substrate, the immersion area and described climb
There is water-absorption fiber floor in the upper and lower surface of the detection substrate in area, the water-absorption fiber layer is superabsorbent fiber layer, the superabsorbent
The specification of water cellulose layer are as follows: 0.1-0.2g/cm2；Passing through concentration between the water-absorption fiber layer and the detection substrate is 1-
The sodium alginate soln of 3wt% bonds, and the coated weight of the sodium alginate soln of 1-3wt% is 1cm2Coat 0.025mL；
(3) preparing width is that 0.5-1cm immerses area: being covered with cotton layer, the cotton on the water-absorption fiber floor for immersing area
The specification of layer is as follows: 45 X 45 of yarn count, 128 X 68 of density, warp thread and weft yarn are that cotton fiber is made；The water-absorption fiber layer with
It is bonded between the cotton layer by the sodium alginate soln that concentration is 1-3wt%, the coating of the sodium alginate soln of 1-3wt%
Amount is 1cm2Coat 0.025mL；
(4) preparing width is the climb region 4-6cm: it is covered with polyester fiber layer on the water-absorption fiber layer of the climb region, it is described to wash
The specification of synthetic fibre fibrous layer is as follows: 75 X 75 of yarn count, 133 X 73 of density, warp thread and weft yarn are polyester fiber；The water-absorption fiber
It is bonded between layer and the polyester fiber layer by the sodium alginate soln that concentration is 1-3wt%, the sodium alginate of 1-3wt% is molten
The coated weight of liquid is 1cm2Coat 0.025mL；
(5) preparing width is 1-1.5cm colour developing area: being pasted with colour developing test paper, the colour developing on the detection substrate in the colour developing area
Method for preparing test paper is as follows: will test substrate and is soaked in chromophoric solution, the chromophoric solution is 0.5-1.5g hexichol phosphinylidyne two
Hydrazine and 1.2-1.5g tert-butylhydroquinone, which are dissolved in 20-30mL dehydrated alcohol, to be made, and after impregnating 10-15min, is taken out, 30 DEG C
Lower dry 30-60min；The sodium alginate soln for being 1-3wt% by concentration between the detection substrate and the colour developing test paper
Bonding, the coated weight of the sodium alginate soln of 1-3wt% are 1cm2Coat 0.025mL；
(6) it suppresses: suppressing 5-10min in the case where pressure is 0.1-0.5MPa pressure；
(7) dry: 30-40 DEG C of dry 48h or more；
(8) cut: according to the length for immersing area be 0.5-1cm, the length of the climb region is 4-6cm, the colour developing area
Length be 1-1.5cm, the length of the grip zone be 2-3cm and it is described detection substrate width be that 0.5-1cm is cut out
It cuts.
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| CN102121905A (en) * | 2010-12-16 | 2011-07-13 | 上海交通大学 | Test strip for detecting heavy metal-chromium (Cr) in water quality and preparation method thereof |
| CN102419326A (en) * | 2011-08-18 | 2012-04-18 | 昆明泊银科技有限公司 | Test paper for detecting hexavalent chromium ions and preparation method thereof |
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| CN104034725A (en) * | 2014-06-25 | 2014-09-10 | 湖北工业大学 | Rapid detection test paper for trace chromium and preparation method of rapid detection test paper |
| CN106290349A (en) * | 2016-11-03 | 2017-01-04 | 百奥森（江苏）食品安全科技有限公司 | Heavy metal detection test paper and detection method thereof in a kind of water |
| CN107237127A (en) * | 2017-03-16 | 2017-10-10 | 浙江工商大学 | A kind of acrylic fibers colour developing fiber PANF AET PAR synthesis and its application |
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|---|---|---|---|---|
| CN102121905A (en) * | 2010-12-16 | 2011-07-13 | 上海交通大学 | Test strip for detecting heavy metal-chromium (Cr) in water quality and preparation method thereof |
| CN102419326A (en) * | 2011-08-18 | 2012-04-18 | 昆明泊银科技有限公司 | Test paper for detecting hexavalent chromium ions and preparation method thereof |
| CN103412125A (en) * | 2013-08-25 | 2013-11-27 | 河南科技学院 | Gold-labeled test strip for rapid detection of chromium ions as well as preparation method and application thereof |
| CN104034725A (en) * | 2014-06-25 | 2014-09-10 | 湖北工业大学 | Rapid detection test paper for trace chromium and preparation method of rapid detection test paper |
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