CN204008478U - A kind of detection kit detecting for the total chromium of water - Google Patents
A kind of detection kit detecting for the total chromium of water Download PDFInfo
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- CN204008478U CN204008478U CN201420325494.6U CN201420325494U CN204008478U CN 204008478 U CN204008478 U CN 204008478U CN 201420325494 U CN201420325494 U CN 201420325494U CN 204008478 U CN204008478 U CN 204008478U
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Abstract
Of the present utility modelly relate to a kind of detection kit detecting for the total chromium of water, comprise kit body, the opening part of this kit body is provided with left cap, right cap and the top cover being connected with kit body on one side, standing of the prefabricated pipe that is plugged with prefabricated pipe is set in kit body, the top that prefabricated pipe is standing is provided with pH test paper storage tank, the medial surface of left cap is shaped with pH color board, the right-hand copper-bath slot that is placed with copper-bath that sets gradually from top to bottom of kit body, be placed with the phosphoric acid solution slot and the nitrite ion slot that is placed with diphenylcarbazide nitrite ion of phosphoric acid solution, the below of kit body is provided with Environmental protection bag accumulator tank, Environmental protection bag accumulator tank is placed with environment-protective sealing bag.Of the present utility model being: simple in structure, easy to carry, it is sequentially docile and obedient clockwise according to use and puts successively detection apparatus, operation smoothly, brings great convenience to detection.
Description
Technical field
The utility model relates to chemical composition detection field, especially refers to the detection to environment-protective water and waste water, refers specifically to a kind of detection kit detecting for the total chromium of water.
Background technology
Chromium is a Heavy Metallic Elements, and the state of its toxicity and its existence has very large relation, and sexavalent chrome has strong toxicity, and having confirmed as is carcinogenic substance, and can put aside in vivo, and skin and mucous membrane are had to strong corrosivity.And trivalent chromium is affected by the conditions such as pH in water, organism, redox materials, temperature and hardness, can change sexavalent chrome into, think the toxicity of comprehensive assessment chromium, need to analyze total chromium in water.
The assay method of total chromium has spectrophotometric method, atomic absorption spectrophotometry, plasma emission spectrometry, titrimetry etc.Wherein spectrophotometric method is because detection limit is low, and Instrument purchase cost is low, can realize the advantages such as field analysis and be widely used.At present, spectrophotometric method is mainly used GB7466-87 potassium permanganate oxidation-diphenyl carbazide spectrophotometry.Existing patent is the online automatic detection that adopting said method has been realized total chromium, is called in the Chinese utility model patent that the Chinese utility model patent of " for the method for the total chromium of online auto monitoring water " and the patent No. be 201120128459.1 and be called " total chromium in water utilizing ultraviolet digestion method on-line monitoring instrument " all uses diphenylcarbazide photometry to realize the online detection of total chromium as the patent No. is 201110172471.7; As shown in table 1, in all kinds of documents, also mentioned some other total chromium analysis method.
In table 1 document, total chromium analysis method gathers
The pretreatment process that said method majority needs acid adding to clear up, to eliminate the interference of reducing substances to sample determination in water sample.The method process is comparatively complicated, and consuming time longer.Except pretreatment process, above-mentioned most methods all need to remove excessive oxidant, but its operating process is also comparatively loaded down with trivial details.If desired save time process, must reselect oxygenant.Report, use the alkaline potassium persulfate can be without last handling process, direct chromogenic assay, but oxygenant storage life only 1 week, can not be for the making of kit, and oxidation digestion time needs 30 minutes.It is oxygenant that existing total chromium kit is used sodium hypobromite solid, has improved the oxygenant holding time, if but preserve for a long time, cannot judge that whether its oxygenant is rotten, and this oxidation reaction is slower, needs 60 minutes, can not fine adaptation Emergent detection needs.
From color development system, the total chromium of spectrphotometric method for measuring is used diphenylcarbazide more, and the specificity of this reaction is stronger.But diphenylcarbazide is subject to the impact of other ions (as ferric ion) in illumination, temperature and reagent and goes bad, and general storage life is about 1 month.If directly use diphenylcarbazide powder, although its storage life can extend to about 3 months, because the amount of taking of developer is slightly variant, cause the precision of data to reduce.
Therefore, existing total chromium detection method is existent defect all, need to improve.
Summary of the invention
Technical problem to be solved in the utility model is the present situation for prior art, provides simple in structure, easy to carry, operation a kind of detection kit detecting for the total chromium of water smoothly.
The utility model solves the problems of the technologies described above adopted technical scheme:
A kind of detection kit detecting for the total chromium of water, comprise kit body, the opening part of this kit body is provided with left cap, right cap and the top cover being connected with kit body on one side, standing of the prefabricated pipe that is plugged with prefabricated pipe is set in kit body, the top that prefabricated pipe is standing is provided with pH test paper storage tank, the medial surface of left cap is shaped with pH color board, the right-hand copper-bath slot that is placed with copper-bath that sets gradually from top to bottom of kit body, be placed with the phosphoric acid solution slot and the nitrite ion slot that is placed with diphenylcarbazide nitrite ion of phosphoric acid solution, the below of kit body is provided with Environmental protection bag accumulator tank, Environmental protection bag accumulator tank is placed with environment-protective sealing bag.
The technical measures of optimizing also comprise:
Above-mentioned prefabricated pipe is round bottom screw-cap test tube.
On above-mentioned pH test paper storage tank, be provided with pH examination paper pop-top lid, this pH examination paper pop-top lid is connected with the top of pH test paper, and pH test paper is vertically inserted in pH test paper storage tank.
In standing of above-mentioned prefabricated pipe, be provided with 40 slots, be 4 rows, 10 distributions of every row.
Detection kit of the present utility model, by standing of the pH test paper that needs in testing process to use, copper-bath, phosphoric acid solution, diphenylcarbazide nitrite ion and prefabricated pipe according to clockwise direction setting, make convenient in operating process, smoothly, and below standing of prefabricated pipe, Environmental protection bag accumulator tank is set, after detection finishes, by putting into environment-protective sealing bag with the testing tool of crossing, preserve, can effectively prevent secondary pollution.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model detection kit;
Fig. 2 is the vertical view of top cover after opening in Fig. 1;
Fig. 3 is the cut-open view of A-A in Fig. 2;
Fig. 4 is the cut-open view (putting into prefabricated pipe) of B-B in Fig. 2;
Fig. 5 is the cut-open view (putting into prefabricated pipe, environment-protective sealing bag) of C-C in Fig. 2.
Embodiment
Below in conjunction with accompanying drawing, embodiment is described in further detail the utility model.
Be structural representation of the present utility model as shown in Figures 1 to 5,
Reference numeral is wherein: kit body 1, left cap 11, right cap 12, top cover 13, standing 2 of prefabricated pipe, prefabricated pipe 21, pH test paper storage tank 3, pH examination paper pop-top lid 31, pH test paper 32, pH color board 4, copper-bath slot 51, phosphoric acid solution slot 52, nitrite ion slot 53, Environmental protection bag accumulator tank 6, environment-protective sealing bag 61.
As shown in Figures 1 to 5,
A kind of detection kit detecting for the total chromium of water, comprise kit body 1, the opening part of this kit body 1 is provided with left cap 11, right cap 12 and the top cover 13 being connected with kit body 1 on one side, the interior setting of kit body 1 is plugged with standing 2 of the prefabricated pipe of prefabricated pipe 21, the top that prefabricated pipe is standing 2 is provided with pH test paper storage tank 3, the medial surface of left cap 11 is shaped with pH color board 4, the right-hand copper-bath slot 51 that is placed with copper-bath that sets gradually from top to bottom of kit body 1, be placed with the phosphoric acid solution slot 52 and the nitrite ion slot 53 that is placed with diphenylcarbazide nitrite ion of phosphoric acid solution, the below of kit body 1 is provided with Environmental protection bag accumulator tank 6, Environmental protection bag accumulator tank 6 is placed with environment-protective sealing bag 61.
PH color board 4 sign has the corresponding color contrast bar of pH1-14, during test pH value by reading pH value with the contrast of pH color board 4.
While carrying, left cap 11, right cap 12 are inwardly turned down, then by top cover 13 turnover and kit body 1 is covered, it is one box-like that the kit body 1 after covering is, and volume is small and exquisite, is easy to carry.
In embodiment, prefabricated pipe 21 is round bottom screw-cap test tube.
In embodiment, be provided with pH examination paper pop-top lid 31 on pH test paper storage tank 3, this pH examination paper pop-top lid 31 is connected with the top of pH test paper 32, and pH test paper 32 is vertically inserted in pH test paper storage tank 3.Taking of pH test paper 32 is convenient in the setting of pH examination paper pop-top lid 31.
In embodiment, in standing 2 of prefabricated pipe, be provided with 40 slots, be 4 rows, 10 distributions of every row.
In detection kit, mainly comprise: pH test paper 32, prefabricated pipe 21, copper-bath, phosphoric acid solution, diphenylcarbazide nitrite ion, standing 2, test tube, environment-protective sealing bag 61.Specific as follows:
(1) the round bottom screw-cap test tube of prefabricated pipe: 10ml or 15ml external diameter 16mm (tool pad, prevents leakage); 2ml potassium persulfate solution is in vitro housed; Wherein the collocation method of potassium persulfate solution is: 4g potassium persulfate is dissolved in 100ml water.Prefabricated pipe adopts each to screw-cap test tube (tool pad) of optical characteristics homogeneous, adopts screw-cap test tube and is to prevent from because of test tube, putting upside down and producing reagent leakage problem in transportation without flat mouth test tube.
(2) phosphoric acid solution: the volume ratio with 1:1 is mixed strong phosphoric acid and water.
(3) copper-bath: 1g copper sulphate is dissolved in 100ml water.
(4) diphenylcarbazide nitrite ion: take diphenylcarbazide 0.2g, be dissolved in 50ml acetone, be diluted with water to 100ml, mix, by being stored in brown bottle (or being surrounded by the bottle of black paper), refrigeration after hydrogen type cation exchange resin.
(5) prefabricated pipe is standing: the stratification step after mixing for the display of prefabricated pipe and whirlpool, and aperture and test tube external diameter adapt; Standing of the prefabricated pipe in this kit use 16mm aperture
(6) environment-protective sealing bag: produce refuse for reclaiming the reagent prefabricated pipe and other experimentations that test.Use 8 above PE materials, guarantee certain load bearing stength, this kit is used 14*20 (cm) valve bag of two-sided 8.
This detection kit detection method, comprises the following steps:
Step 1: get water sample to be measured, get pH test paper 32 test water sample pH value to be measured, if pH value is greater than 12 or be less than 1, regulate pH;
Step 2: get the complete water sample to be measured of 5ml pre-service and be placed in the prefabricated pipe 21 that presets 2ml potassium persulfate solution, and add 0.2ml copper-bath; Pre-service is for to carry out beforehand dilution by the water sample to be measured of high concentration; Concentration need to be diluted higher than 3mg/L;
Step 3: open heating and decompose device, set temperature is 165 ℃, after temperature arrives 165 ℃, inserts the prefabricated pipe of mixed sample in heating and decompose groove, and stopped pipe is cleared up 10 minutes;
Step 4: for adding sample after copper-bath to occur muddy or precipitation, and clear up that postprecipitation not exclusively disappears, need to strengthen after potassium persulfate concentration, again clear up mensuration;
Step 5: after having cleared up, take out and be cooled to room temperature, then add 0.05ml phosphoric acid solution, add again 0.2ml diphenylcarbazide nitrite ion after mixing;
Step 6: the mixed solution obtaining in step 4, after standing 10 minutes, is inserted in photometric cell, take blank as contrast, in the colorimetric analysis of 540nm place;
Step 7: by the total chromium typical curve of the absorbance substitution of water sample to be measured, and be multiplied by extension rate, obtain total chromium concn.
In embodiment, in step 1, the control method of pH value is for to be adjusted to pH5 ~ 9 with hydrochloric acid or NaOH.
In embodiment, before step 2, prefabricated pipe 21 is surveyed sample, randomly drawed a prefabricated pipe 21, check its inner oxidizing agent pH, if pH<1 illustrates that oxygenant is rotten.
In embodiment, the foundation of total chromium typical curve: the total chromium standard solution that configures respectively 0.1,0.3,0.5,0.7,1.0,1.5mg/L; Respectively get 5ml, by analytic sample step, measure, record 540nm place light absorption value, thereby obtain total chromium typical curve.
In embodiment, the analytical approach of total chromium typical curve is least square method.
In embodiment, after step 6, used prefabricated pipe 21 is put into environment-protective sealing bag 61 and seal up for safekeeping; Finally hand over specialized company to process.
In testing process, need to use pH test paper 32, copper-bath, phosphoric acid solution, diphenylcarbazide nitrite ion according to use order, in kit body 1, according to clockwise direction, put successively, take conveniently, use smoothly, give bringing great convenience of detecting.And after whole testing process finishes, used instrument need to be packed in environment-protective sealing bag 61 and seal up for safekeeping, prevent its secondary pollution to environment, therefore Environmental protection bag accumulator tank 6 is arranged to the below of detection kit.
Most preferred embodiment of the present utility model is illustrated, and the various variations of being made by those of ordinary skills or remodeling can not depart from scope of the present utility model.
Claims (4)
1. the detection kit detecting for the total chromium of water, comprise kit body (1), it is characterized in that: the opening part of described kit body (1) is provided with left cap (11), right cap (12) and the top cover (13) being connected with kit body (1) on one side, standing of the prefabricated pipe (2) that is plugged with prefabricated pipe (21) is set in described kit body (1), the top of described prefabricated pipe standing (2) is provided with pH test paper storage tank (3), the medial surface of described left cap (11) is shaped with pH color board (4), the right-hand copper-bath slot (51) that is placed with copper-bath that sets gradually from top to bottom of described kit body (1), be placed with the phosphoric acid solution slot (52) of phosphoric acid solution and be placed with the nitrite ion slot (53) of diphenylcarbazide nitrite ion, the below of described kit body (1) is provided with Environmental protection bag accumulator tank (6), described Environmental protection bag accumulator tank (6) is placed with environment-protective sealing bag (61).
2. a kind of detection kit detecting for the total chromium of water according to claim 1, is characterized in that: described prefabricated pipe (21) is round bottom screw-cap test tube.
3. according to claim 2 a kind of for the water detection kit that always chromium detects, it is characterized in that: on described pH test paper storage tank (3), be provided with pH examination paper pop-top lid (31), this pH examination paper pop-top lid (31) is connected with the top of pH test paper (32), and described pH test paper (32) is vertically inserted in pH test paper storage tank (3).
4. a kind of detection kit detecting for the total chromium of water according to claim 3, is characterized in that: described prefabricated pipe is provided with 40 slots on standing (2), is 4 rows, 10 distributions of every row.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420325494.6U CN204008478U (en) | 2014-06-18 | 2014-06-18 | A kind of detection kit detecting for the total chromium of water |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420325494.6U CN204008478U (en) | 2014-06-18 | 2014-06-18 | A kind of detection kit detecting for the total chromium of water |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105223168A (en) * | 2015-10-29 | 2016-01-06 | 伊创仪器科技（广州）有限公司 | Online metal analysis system |
| CN106770231A (en) * | 2016-12-03 | 2017-05-31 | 百奥森（江苏）食品安全科技有限公司 | A kind of detection kit for total chromium detection in water |
| CN107831122A (en) * | 2017-10-27 | 2018-03-23 | 无锡艾科瑞思产品设计与研究有限公司 | It is a kind of to be used for the kit that chromium detects in water |
-
2014
- 2014-06-18 CN CN201420325494.6U patent/CN204008478U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105223168A (en) * | 2015-10-29 | 2016-01-06 | 伊创仪器科技（广州）有限公司 | Online metal analysis system |
| CN106770231A (en) * | 2016-12-03 | 2017-05-31 | 百奥森（江苏）食品安全科技有限公司 | A kind of detection kit for total chromium detection in water |
| CN107831122A (en) * | 2017-10-27 | 2018-03-23 | 无锡艾科瑞思产品设计与研究有限公司 | It is a kind of to be used for the kit that chromium detects in water |
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