CN1430060A - Pesticide residue chemical agent detecting tube and its preparation method - Google Patents
Pesticide residue chemical agent detecting tube and its preparation method Download PDFInfo
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- CN1430060A CN1430060A CN 01145008 CN01145008A CN1430060A CN 1430060 A CN1430060 A CN 1430060A CN 01145008 CN01145008 CN 01145008 CN 01145008 A CN01145008 A CN 01145008A CN 1430060 A CN1430060 A CN 1430060A
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Abstract
A detecting tube for detecting the residual agricultural chemicals containing organic phosphate is composed of a sleeve barrel, a needle, a piston and its tubular rod, and the mixture of resorcin particles, nitrosyliron sodium chloride particles and sodium hydroxide particles. After the juice of object to be detected is sucked in the barrel, it reacts on with said mixture for 3-5 S to dectect the residual agricultural chemicals according to color.
Description
Technical field
The invention belongs to pick-up unit and the method for making, particularly a kind of pesticide residue chemical agent detecting tube and preparation method thereof of utilizing chemical indicator.
Background technology
At present, both at home and abroad to biological samples such as blood, tissue, internal organs, and detection agricultural, the secondary product noxious material is indoor carrying out.Its step is the directive property test, qualitative, quantitative testing.According to the international public method of deciding, processes such as running program should be divided into extraction, separation, purification, concentrate, then filter paper or the activation after thin layer chromatography board on point sample, according to the reagent for preparing in advance, add 5% NaOH earlier, be added with 0.5% resorcinol alcoholic solution, 1% natrium nitroferrocyanatum after to be decomposed successively, through the radiation heating observations.The sample requirement is big, and detection time is long, the requirement for experiment condition height.Must possess and special poison analysis room and related reagent, solvent, glassware and relevant chromatogram checkout equipment, and operate by the professional.The agricultural byproducts residues of pesticides of China have caused the very big harm of society, and present detection means and technical force far can not satisfy social needs, many vegetable growers, orchard worker, fishman, tea grower, medicinal herb grower etc., for the economic pursuit benefit, violate the relevant rules of country, decree, overdose, the high poison of unconventional use, highly toxic pesticide cause farming, secondary product toxic amount severe overweight, become social concern, and directly caused the acute or slow poisoning of consumers in general.And domestic medical institutions at different levels do not set up relevant detection subject as yet.
Chinese patent 1296182 discloses a kind of " organic phosphorus detection method and special detection bag ", is applicable to that organophosphorus pesticide detects, and bag is bag in the sack cover, and middle bag cover pouch is put checking matter in the pouch 10% sodium hydroxide solution immersion 4-5 second; Second step disclose wear add at the bottom of the pouch in acid ammonium molybdate solution 5-10 second of bag 6%; The 3rd step disclosed and wears middle bag end adding sack 15% sodium sulfite solution about 60 seconds; Have or not color to confirm the residues of pesticides degree according to final mixed liquor, can on-the-spotly detect.
Summary of the invention
The present invention is for Detecting Pesticide program complexity, cost height, an inefficient difficult problem, and a kind of pesticide residue chemical agent detecting tube that overcomes above-mentioned deficiency that provides and preparation method thereof are provided in the real work.
According to the chemical feature of organophosphorus compounds agricultural chemicals, contain the feature of C-P key and C-O-P, C-S-P, C-N-P key, the organophosphorus compounds agricultural chemicals is divided into five types of two big classes:
1 phosphoric acid ester;
2 group thiophosphates: monothio phosphoric acid ester, dithio acid esters, monothio pyrophosphate class, two sulfo-pyrophosphate classes.
Detect principle: phosphate pesticide is hydrolysis or dichloro acetaldehyde phenol and resorcin reaction in alkaline solution, generates red compound.The group thiophosphate agricultural chemicals is hydrolyzed into sulfide Na in alkaline solution
2S and natrium nitroferrocyanatum effect, generate the aubergine compound, according to all hydrolysis and all produce the general character of red compound in alkaline solution of above-mentioned two organophosphorus esters of gallic acid agricultural chemicals, and utilize the NaOH solid to meet the characteristics that water discharges chemical energy generation heat, under the situation that need not external heating promotion chemical reaction rate, accelerated course of reaction.
The present invention designs by following technical scheme.
Pesticide residue chemical agent detecting tube comprises that the top sets firmly the sleeve of syringe needle and sleeve is built-in to fasten the pump that constitutes with piston by handle, pipe, it is characterized in that syringe needle plug-in mounting plug, is filled with chemical detection reagent in the confined space between sleeve top and the piston in it.
Described chemical agent detector tube is characterized in that being filled with in the confined space between sleeve top and the piston in it chemical detection reagent resorcinol particle, natrium nitroferrocyanatum particle and sodium hydrate particle.
The preparation method of pesticide residue chemical agent detecting tube is that the white chemical detectable of filling in the space airtight between sleeve top and the piston in it is to make by the component of following weight distribution ratio:
1 part of resorcinol particle
1 part of natrium nitroferrocyanatum particle
8 parts of sodium hydrate particles.
During use, take off the plug of plug-in mounting on the syringe needle, syringe needle is thrust in the examined object, pull at fixed handle, pipe is fastened the drive piston and is moved backward, make the space of filling chemical reagent form negative pressure, the juice that is about in the checking matter sucks in the chemical reagent, and the liquid material 5-200 μ l content of agricultural chemicals that contains organic phosphoric acid ester is more than 0.2-0.3 μ g, by chemical reaction 3-5 second, can predict the residues of pesticides situation in the checking matter, the positive presents redness.
The pesticide residue chemical agent detecting tube of making like this is simple in structure, with low cost, and on-the-spot the use is easy to carry, time saving and energy saving, rapid and convenient, and directly perceived, specialty, layman all can use; Has the advantage quick, micro-, accurate, that reappearance is high, specificity is strong.Be that a kind of reagent heats and not charing voluntarily, be convenient to store; The testing result of pesticide residue chemical agent detecting tube can long preservation.Thousands of routine poisonous substances detect, and none is failed to report, reports by mistake.
Description of drawings
Accompanying drawing is an assembly structure synoptic diagram of the present invention.
Among the figure 1 sleeve, 2 pipes fasten, 3 handles, 4 pistons, 5 syringe needles, 6 reagent, 7 plugs, 8 pinhead sleeves.
Embodiment
Pesticide residue chemical agent detecting tube, structure are sleeve and the built-in pump that constitutes with piston of being fastened by handle, pipe of sleeve that the top sets firmly syringe needle.In syringe needle plug-in mounting plug, be filled with chemical detection reagent in the confined space between sleeve top and the piston in it.Because the reagent two ends have plug and piston shutoff respectively, therefore be sealing state.
This chemical agent detector tube adopts the injection mo(u)lding of water white transparency acrylic plastering, cover tube length 65mm, and external diameter 14mm, internal diameter 12mm, wall thickness 1mm, pipe fasten long 80mm; Syringe needle adopts No. 5 injection needles of medical stainless steel.
Also can be made into cover tube length 80mm, external diameter 7mm, internal diameter 5mm, wall thickness 1mm, pipe fasten the different size of long 90mm.
Be filled with white chemical detectable resorcinol particle, natrium nitroferrocyanatum particle and sodium hydrate particle in the confined space between chemical agent detector tube sleeve top and the piston in it.This reagent components in weight portions is:
1 part of resorcinol particle
1 part of natrium nitroferrocyanatum particle
8 parts of sodium hydrate particles.
Above detectable particle diameter all＜75 μ m.If it is bigger to sell product particle, feasible mechanical crushing stirs, packing.
Be filled with the chemical detection reagent 20-30mg that mixes in the confined space between every chemical agent detector tube sleeve top and its interior piston.
Chemical detection reagent is Shanghai chemical reagent factory and analyzes pure AR level commercially available prod.
Range of application:
1. public security system: the poisoning of poisoning, commit suiside, poisoning in addition;
2. clinical examination: acute and chronic poisoning patient detects, and arranges for formulating therapeutic scheme and rescue
Execute and provide support;
3. agricultural production management: agricultural byproducts are produced the agricultural chemicals use test;
4. teaching: teaching unit exemplary tool;
5. functional government departments: agricultural byproducts field of circulation product liabilities supervision;
6. colony: consumer's instrument of defending oneself.
Store: keep dry, more than 0 ℃, the term of validity 3 years.
Put into practice in the work legal medical expert, Efficiency in Buildings in Tianjin Area, Tangshan Area, Cangzhou Area and area, Langfang, commit suiside take poison, colony's accidental poisoning, 3000 examples of poisoning, to phosphoric acid ester poisonous substance (DDV) 900 examples, account for 30%; The group thiophosphate poisonous substance: Rogor 800 examples 1605 agricultural chemicals 1300 examples, add up to 2100 examples, account for 70%, detect, success ratio 100%, none is failed to report, reports by mistake.
Claims (4)
1. pesticide residue chemical agent detecting tube, comprise that the top sets firmly the sleeve and the built-in pump that constitutes with piston of being fastened by handle, pipe of sleeve of syringe needle, it is characterized in that syringe needle plug-in mounting plug, be filled with chemical detection reagent in the confined space between sleeve top and the piston in it.
2. chemical agent detector tube according to claim 1 is characterized in that being filled with in the confined space between sleeve top and the piston in it chemical detection reagent resorcinol particle, natrium nitroferrocyanatum particle, sodium hydrate particle.
3. the preparation method of a pesticide residue chemical agent detecting tube is characterized in that the chemical detection reagent of filling in the space airtight between sleeve top and the piston in it is to make by the component of following weight distribution ratio:
1 part of resorcinol particle
1 part of natrium nitroferrocyanatum particle
8 parts of sodium hydrate particles.
4. chemical agent detector tube according to claim 1 is characterized in that being filled with in the confined space between sleeve top and the piston in it chemical detection reagent 20-30mg that mixes, the reagent particle diameter all＜75 μ m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01145008 CN1430060A (en) | 2001-12-30 | 2001-12-30 | Pesticide residue chemical agent detecting tube and its preparation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01145008 CN1430060A (en) | 2001-12-30 | 2001-12-30 | Pesticide residue chemical agent detecting tube and its preparation method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1430060A true CN1430060A (en) | 2003-07-16 |
Family
ID=4677959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01145008 Pending CN1430060A (en) | 2001-12-30 | 2001-12-30 | Pesticide residue chemical agent detecting tube and its preparation method |
Country Status (1)
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| CN (1) | CN1430060A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1303421C (en) * | 2004-03-24 | 2007-03-07 | 南京大学 | Synchronous purifying and extracting process for analysis of organic chlorine and organic phosphorus pesticide |
| CN108051552A (en) * | 2017-11-03 | 2018-05-18 | 无锡艾科瑞思产品设计与研究有限公司 | A kind of fruit pesticide residue detection device |
| CN110736744A (en) * | 2019-10-24 | 2020-01-31 | 北京航天益来电子科技有限公司 | Novel chemistry corroborating operation device |
-
2001
- 2001-12-30 CN CN 01145008 patent/CN1430060A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1303421C (en) * | 2004-03-24 | 2007-03-07 | 南京大学 | Synchronous purifying and extracting process for analysis of organic chlorine and organic phosphorus pesticide |
| CN108051552A (en) * | 2017-11-03 | 2018-05-18 | 无锡艾科瑞思产品设计与研究有限公司 | A kind of fruit pesticide residue detection device |
| CN110736744A (en) * | 2019-10-24 | 2020-01-31 | 北京航天益来电子科技有限公司 | Novel chemistry corroborating operation device |
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