CN1033320A - The plumbous detector tube of poisonous metal in the simple and easy fast measuring water - Google Patents
The plumbous detector tube of poisonous metal in the simple and easy fast measuring water Download PDFInfo
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- CN1033320A CN1033320A CN 87106809 CN87106809A CN1033320A CN 1033320 A CN1033320 A CN 1033320A CN 87106809 CN87106809 CN 87106809 CN 87106809 A CN87106809 A CN 87106809A CN 1033320 A CN1033320 A CN 1033320A
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- water
- detector tube
- mtb
- milligrams
- thymol blue
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Abstract
What the present invention relates to is the plumbous detector tube of poisonous metal in a kind of simple and easy fast measuring water.The agent that detects in the detector tube is methylthymol blue (MTB) chelating resin, and it measures lead tolerance accuracy height in the water, precision is good.This detector tube is cheap, easy to use, be easy to carry, and measuring does not need power in using, and is suitable for the self-control detection of factory, scale wastewater treatment.
Description
What the present invention relates to is the plumbous detector tube of poisonous metal in a kind of simple and easy fast measuring water.
Measure the content of poisonous metal lead in the water, instrument analytical method and chemical analysis method are generally arranged.Commonly used in the instrument analytical method have atomic absorption method, a plasma emission spectrometry etc.; Use in the chemical analysis method maximum be spectrophotometric method.These methods all need instrument, the technician of special laboratory, costliness, and formality is complicated, and inconvenience is arranged more.Japanese publication " electrochemical ” Za Chi 39 No11(1971) once reported with the lead tolerance in the detector tube method fast measuring water; It detects agent is the 4-(2-pyridylazo) the resorcinol chelating resin; Its color is orange-yellow or orange, and this what detect that agent and lead ion do that the time spent generates is red ribbon, and the contrast between these two kinds of colors is bad, and stratum boundary is not distinct, even is difficult to differentiate, and quantitative accuracy and precision are very poor; Sensing range is 5～120PPm; This plumbous detector tube mensuration to lead when having copper, zinc ion simultaneously in the water has a strong impact on.
The objective of the invention is to seek a kind of new detector tube that lead tolerance in a kind of fast measuring water easy to use, simple and easy is made in agent that detects, enable not to be subjected in the tested water simultaneous other impurity such as copper (Cu), the isoionic influence of zinc (Zn), and improve accuracy and the precision of measuring lead tolerance in the tested water.
The structure of the plumbous detector tube of this patent invention is a two ends sealing by fusing, methyl thymol blue (MTB) chelating resin is housed in the glass tube of lower end drawing-down detects agent, and blocking up at these two end plugs that detect agent that absorbent cotton constitutes.Methyl thymol blue (MTB) chelating resin synthetic method is as follows:
In 600～800 milliliters double distilled water, add 5 its granularities of gram at the pulverous strong basic anion-exchange resin of 100～200 purposes (201 * 8), the water-bath that places 24 °～26 ℃ was with 380～420 rev/mins speed continuous stirring 8～16 minutes, add 2.5～15 milligrams of methyl thymol blues (MTB) then, stop after at least 30 minutes stirring, take out, filter, with double distilled water flushing 3～5 times, filter is done, at room temperature to be dried to water cut be 20～30% in the dark place, covers the light sealing and preserve.During use by the said structure glass tube of packing into.When measuring in the water sample lead tolerance, two ends with pipe cut off earlier, with emulsion tube the butt end of detector tube and the little funnel of glass are linked together, vertically are placed on the test tube rack, the lower end of detector tube is inserted in the glass small beaker that the bottom is placed with absorbent cotton and is made its contact absorbent cotton.Measure the preparation sample of water to be measured with transfer pipet, add in the little funnel of glass.Sample flows through detector tube automatically by the capillarity of self gravitation and absorbent cotton, treats that sample has flowed automatically, measures automatically and finishes.Detect agent generation chemical reaction in lead ion in the sample and the detector tube, generate bright blue look colour band, the content of lead ion is proportional in colour band length and the sample, and measurement colour band length is also looked into typical curve, just can draw the lead tolerance in the sample.
Method with water preparation sample to be measured is such, get 10～30 milligrams of potassium citrates, 10～40 milligrams in tartrate, 30～80 milligrams of sodium potassium tartrate tetrahydrates, 10～50 milligrams in potassium cyanide, ammonium chloride 0.3～3 gram, with water-soluble separate and fixed molten to 50 milliliters to be measured, this solution promptly is the sample by water preparation to be measured.
The plumbous detector tube of the present invention is cheap, several maos of plumbous detector tube cost.Detected water sample accommodation is wide, as long as the water sample pH value in 3～7 scopes, all can be measured the lead tolerance of water sample exactly.Measuring process need not power, and also not the special messenger does not keep an eye on and operates, and sample is voluntarily by behind the detector tube, can be in 48 hours whenever read measurement result.Detector tube itself is all very little with other used apparatus volume, and general assembly (TW) can not surpass 1 kilogram, is easy to carry.
Detector tube of the present invention is based on the colour band length that measurement produces and carries out quantitative.The present invention adopts methyl thymol blue chelating resin to detect agent and is equipped with water to be measured preparation sample and uses, and detects to be with behind the sample of agent contact measured water preparation brownly slightly, generates bright blue look colour band with the lead ion reaction, and with distinct contrast, stratum boundary is clear.Therefore, determine that accuracy, the precision of lead tolerance in the detected water sample all are higher than the detector tube of preamble Japan report.
Detector tube of the present invention is highly sensitive, and the sensing range of lead tolerance is 0.5～40PPm, and minimum detectable quantity is 0.5PPm.The self-control detection that is suitable for factory, scale wastewater treatment.
Common anion N O
- 8, Cl
-, F
-, CO
= 8With kation K
+, Na
+, Ca
++, Mg
++Mensuration to detector tube of the present invention does not have influence; Negative ion SO
= 4, CH
3COO
-When its coexistence amount reaches 10 times of lead ion content, kation Cu
++, Zn
++, Hg
++, Cd
++When waiting its coexistence amount to reach 6 times of lead ion amounts the mensuration of detector tube of the present invention is not found influence.
Embodiment:
The structure of the plumbous detector tube of the present invention is a two ends sealing by fusing as shown in drawings, 2.5 millimeters of internal diameters, and 120 millimeters of length overalls, the glass tube 1 of lower end drawing-down is equipped with 180 milligrams of lead in the wider section in the pipe and detects agent 2, and blocking up at two end plugs that detect agent has absorbent cotton 3.It is methyl thymol blue (MTB) chelating resin that lead detects agent, its synthetic method is as follows: add 5.5 its granularities of gram and be the Powdered strong basic anion-exchange resin of 100～200 purposes (201 * 8) in 700 milliliters double distilled water and place 26 ℃ water-bath with 390 rev/mins speed continuous stirring 12 minutes, add 8 milligrams of methyl thymol blues (MTB) then, stir and stopped in 30 minutes, take out and filter, do with filter after the double distilled water flushing 3 times, at room temperature being dried to water cut is 25%.Take by weighing this and detect in 180 milligrams of glass tubes of packing into of agent, then sealing by fusing.
Earlier the two ends of pipe are cut off during use, link together with the little funnel of glass of emulsion tube with 30 millimeters of butt end and diameters, vertically be placed on the test tube rack, the lower end of detector tube is inserted in the glass small beaker that the bottom is placed with absorbent cotton and is made it contact absorbent cotton.Measure 2 milliliters in the preparation sample of water to be measured with transfer pipet, add in the little funnel of glass.Sample flows through detector tube automatically by the capillarity of deadweight and absorbent cotton, and sample flow is intact in 30 minutes, measures automatically and finishes.Detect agent generation chemical reaction in lead ion when sample flow is managed after testing in the sample and the detector tube, generate bright blue look colour band, the content of lead ion is proportional in colour band length and the sample, measures colour band length and look into typical curve just to draw lead tolerance in the sample.
Prescription with water preparation sample to be measured is such, get 20 milligrams of potassium citrates, 30 milligrams in tartrate, 60 milligrams of sodium potassium tartrate tetrahydrates, 20 milligrams in potassium cyanide, ammonium chloride 2 grams, with to be measured water-soluble separate and fixed molten to 50 milliliters, this solution promptly be the sample that water to be measured is prepared.
Once measuring lead tolerance with the plumbous detector tube of the present invention by above-mentioned steps is the preparation standard model of 20 mcg/ml, and totally 10 times, the standard deviation of its colour band linear measure longimetry is 0.30, and precision is 1.5%; With plumbum ion concentration is the known sample of 20 mcg/ml, does 10 plumbum ion concentrations and measures, and the precision of its measurement is 1.7%, and wherein the maximum relative error of single measurement is 2.5%.
Claims (4)
1, involved in the present invention is the plumbous detector tube of poisonous metal in a kind of mensuration water, it is characterized in that detector tube is in the glass tube of a two ends sealing by fusing, lower end drawing-down methyl thymol blue [MTB] chelating resin to be housed to detect agent, and blocking up at these two end plugs that detect agent that absorbent cotton constitutes.
2, according to the detector tube of poisonous metal lead in the described mensuration water of claim 1, it is characterized in that methyl thymol blue (MTB) chelating resin in building-up process, the ratio of strong basic anion-exchange resin and methyl thymol blue (MTB) is:
Strong basic anion-exchange resin: 1 gram
0.5～3 milligram of methyl thymol blue
3, according to the detector tube of poisonous metal lead in the described mensuration water of claim 1, it is characterized in that methyl thymol blue (MTB) chelating resin strong basic anion-exchange resin in building-up process at first puts into double distilled water, then in 24 °～26 ℃ water-bath with 380～420 rev/mins speed continuous stirring 8～16 minutes, add methyl thymol blue (MTB) again, at least stir after 30 minutes and stop, take out and filter, do with 3～5 filters of double distilled water flushing, being dried to water cut under the room temperature is 20～30%, covers the light sealing and preserves.
4,, it is characterized in that water to be measured preparation sample is 10～30 milligrams of potassium citrates, 10～40 milligrams in tartrate, 10～50 milligrams in potassium cyanide, ammonium chloride 0.3～3 gram, 30～80 milligrams of usefulness of sodium potassium tartrate tetrahydrate water-soluble separate and molten to 50 milliliters calmly to be measured according to the detector tube of poisonous metal lead in the described mensuration water of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN87106809.5A CN1004582B (en) | 1987-10-14 | 1987-10-14 | Simple and quick detecting tube for determining harmful metallic lead in water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN87106809.5A CN1004582B (en) | 1987-10-14 | 1987-10-14 | Simple and quick detecting tube for determining harmful metallic lead in water |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1033320A true CN1033320A (en) | 1989-06-07 |
| CN1004582B CN1004582B (en) | 1989-06-21 |
Family
ID=4815852
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN87106809.5A Expired CN1004582B (en) | 1987-10-14 | 1987-10-14 | Simple and quick detecting tube for determining harmful metallic lead in water |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1004582B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1563945B (en) * | 2004-04-20 | 2010-04-28 | 白莉 | Total iron assaying liquid and color comparison tube |
| CN104865345A (en) * | 2015-05-29 | 2015-08-26 | 福建拓普检测技术有限公司 | Method for simply detecting lead content in working environment and sampling device |
| CN104931492A (en) * | 2015-06-10 | 2015-09-23 | 苏州东辰林达检测技术有限公司 | Detection reagent for lead content in seaweed and detection method using detection reagent |
| CN104931490A (en) * | 2015-05-29 | 2015-09-23 | 福建拓普检测技术有限公司 | Method for simply detecting whether air in operation environment contains lead and detection device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1045361C (en) * | 1995-01-18 | 1999-09-29 | 青岛海洋大学 | Efficient energy-saving dc fluorescent lamp |
-
1987
- 1987-10-14 CN CN87106809.5A patent/CN1004582B/en not_active Expired
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1563945B (en) * | 2004-04-20 | 2010-04-28 | 白莉 | Total iron assaying liquid and color comparison tube |
| CN104865345A (en) * | 2015-05-29 | 2015-08-26 | 福建拓普检测技术有限公司 | Method for simply detecting lead content in working environment and sampling device |
| CN104931490A (en) * | 2015-05-29 | 2015-09-23 | 福建拓普检测技术有限公司 | Method for simply detecting whether air in operation environment contains lead and detection device |
| CN104865345B (en) * | 2015-05-29 | 2016-04-20 | 福建拓普检测技术有限公司 | A kind of method of simple detection operating environment Lead in Air content |
| CN104931490B (en) * | 2015-05-29 | 2017-07-25 | 福建拓普检测技术有限公司 | In a kind of simple detection operation surrounding air whether leaded detection means |
| CN106990103A (en) * | 2015-05-29 | 2017-07-28 | 福建拓普检测技术有限公司 | In a kind of detection operation surrounding air whether leaded detection means |
| CN106990103B (en) * | 2015-05-29 | 2019-04-23 | 福建拓普检测技术有限公司 | In a kind of detection operating environment air whether leaded detection device |
| CN104931492A (en) * | 2015-06-10 | 2015-09-23 | 苏州东辰林达检测技术有限公司 | Detection reagent for lead content in seaweed and detection method using detection reagent |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1004582B (en) | 1989-06-21 |
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