CN102033096A - Device for extracting and concentrating arsenic-containing sample to be tested - Google Patents
Device for extracting and concentrating arsenic-containing sample to be tested Download PDFInfo
- Publication number
- CN102033096A CN102033096A CN2009100356246A CN200910035624A CN102033096A CN 102033096 A CN102033096 A CN 102033096A CN 2009100356246 A CN2009100356246 A CN 2009100356246A CN 200910035624 A CN200910035624 A CN 200910035624A CN 102033096 A CN102033096 A CN 102033096A
- Authority
- CN
- China
- Prior art keywords
- bottle
- absorption
- arsenic
- sample
- extracting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a device for extracting and concentrating an arsenic-containing sample to be tested. The device comprises a concentration bottle (2), a constant-temperature heater (1), an SO3 absorption bottle (9) and a gas guide pipe (5), wherein the concentration bottle (2) is arranged on the constant-temperature heater (1); the absorption bottle (9) is filled with alkali absorption liquid; the concentration bottle (2) and the absorption bottle (9) are provided with ground stoppers; the concentration bottle (2) is connected with the absorption bottle (9) through the gas guide pipe (5); and the tail end of the gas guide pipe (5) extends into the alkali absorption liquid. When the device is used for extracting and condensing the arsenic-containing sample, arsenic content is not affected and arsenic measuring accuracy is enhanced; simultaneously, environmental pollution is prevented in extraction and concentration processes.
Description
Technical field
The present invention relates to a kind of extraction concentration device that contains the arsenic sample to be measured, belong to the chemical analysis instrument field.
Background technology
In the prior art, the process of arsenic content is in the micro-coulometric determination sample: get an amount of sample and move in the concentrated bottle, add the concentrated sulphuric acid, to concentrate bottle and be placed on heating evaporation on the electric furnace, get the extracting concentrate after cooling, and the extracting concentrate will be transferred to bottle takes place, can be connected with calibration microcoulomb arsenic apparatus well bottle takes place, add solution of potassium borohydride in bottle takes place arsenic hydride, instrument reacts titration automatically, measures arsenic content in the sample.Its principle is: after sample is concentrated with the sulfuric acid extracting, add acid potassium borohydride and make pentavalent arsenic or trivalent arsenic be converted into AsH
3, carry by carrier gas (being generally nitrogen) then and enter titration cell, and include I in the saturated iodo-potassium bromide composite electrolyte with titration cell
2And IBr
2 -Reaction makes I
2And IBr
2 -Ion concentration reduces, the IBr of consumption
2 -Produce by anode electrolysis, produce IBr by measuring the electrolytic cell anode electrolysis
2 -The electric weight that ion consumed can be obtained arsenic content in the sample according to Faraday's law.
Originally when using sulfuric acid extracting concentrating sample, with concentrate bottle place can not temperature adjustment electric furnace, its hot face temperature can reach more than several Baidu, under this state, organism in the sample very easily decomposes, and forms carbon distribution, needs to add hydrogen peroxide in sample and eliminate carbon distribution, can the people be the concentration of raising arsenic in the sample like this, make measurement result bigger than normal.Dense H of while
2SO
4Can resolve into SO during heating
3, SO
3Have stronger pungency and toxicity, do not adopt SO
3Absorption plant causes environmental pollution, and operating personnel's respiratory tract is had very large injury.
Summary of the invention
The invention provides a kind of extraction concentration device that contains the arsenic sample to be measured, use this device extracting to concentrate when containing the arsenic sample, can not influence arsenic content, improved the accuracy of arsenic measurement, in the extracting concentration process, can not cause environmental pollution simultaneously.
For solving the problems of the technologies described above, the present invention has adopted following technical scheme: a kind of extraction concentration device that contains the arsenic sample to be measured, except that concentrating bottle, also comprise constent temperature heater, and described concentrated bottle places on the constent temperature heater.
This device also comprises SO
3Absorption bottle and wireway fill alkaline absorption solution in the absorption bottle, described concentrated bottle and absorption bottle are provided with grinding port plug, and described concentrated bottle is connected with absorption bottle by wireway, and described wireway tail end stretches in the alkaline absorption solution.
Concentrate in the bottle and be provided with snorkel, described snorkel is inserted in to concentrate to stretch out in the bottle grinding port plug and concentrates outside the bottle, and described absorption bottle is connected with air pump by conduit, and described conduit is inserted in the absorption bottle grinding port plug, and conduit top stretches in the absorption bottle.
The invention has the beneficial effects as follows: when the arsenic in the sample concentrates through concentrated sulphuric acid extraction, under the control of constent temperature heater, make sample be in slight boiling condition and can not produce the carbon deposit phenomenon, and dense H
2SO
4Just be broken down into H
2O and SO
3, sample can keep fully, so just is unlikely to add hydrogen peroxide and makes sample result bigger than normal, has improved the accuracy of arsenic content.After using absorption bottle, H
2SO
4Decompose the SO of coming out
3The alkali lye that all is absorbed in the bottle is absorbed, reach the purpose that purifies the laboratory air, prevent the pollution of the environment.Be provided with snorkel, wireway, conduit and air pump in the device and constitute gas directing system, can prevent to concentrate bottle the liquid spill phenomenon takes place.
Description of drawings
Fig. 1 is a structural representation of the present invention
Embodiment
According to shown in Figure 1, a kind of extraction concentration device that contains the arsenic sample to be measured, it comprises concentrated bottle 2, constent temperature heater 1, SO
3Absorption bottle 9, snorkel 8, wireway 5, conduit 6 and air pump 7.Described concentrated bottle 2 places on the constent temperature heater 1.Fill alkaline absorption solution in the absorption bottle 9.Described concentrated bottle 2 and absorption bottle 9 are provided with grinding port plug, concentrate on the bottle grinding port plug 3 and are inserted with snorkel 8 and wireway 5, and described snorkel 8 one ends stretch into to concentrate in the bottle 2 and do not contact with sample, and the other end stretches out and concentrates outside the bottle 2.Described wireway 5 is inserted between the grinding port plug that concentrates bottle 2 and absorption bottle 9, and wireway 5 one ends stretch into to concentrate in the bottle and do not contact with sample, and another tail end stretches in the alkaline absorption solution, and the gas that concentrates in the bottle 2 is imported in the alkaline absorption solution.Described conduit 6 is inserted in the absorption bottle grinding port plug 4, and conduit 6 tops stretch in the absorption bottle 9 and do not contact with absorption liquid, and the other end is connected with air pump 7.
Claims (3)
1. extraction concentration device that contains the arsenic sample to be measured, it comprises and concentrates bottle (2), it is characterized in that it also comprises constent temperature heater (1), described concentrated bottle (2) places on the constent temperature heater (1).
2. the extraction concentration device that contains the arsenic sample to be measured according to claim 1 is characterized in that it also comprises SO
3Absorption bottle (9) and wireway (5), absorption bottle fills alkaline absorption solution in (9), described concentrated bottle (2) and absorption bottle (9) are provided with grinding port plug, and described concentrated bottle (2) is connected with absorption bottle (9) by wireway (5), and described wireway (5) tail end stretches in the alkaline absorption solution.
3. the extraction concentration device that contains the arsenic sample to be measured according to claim 2, it is characterized in that concentrating bottle (2) and be provided with snorkel (8), described snorkel (8) is inserted in to concentrate in the bottle grinding port plug (3) and stretch out and concentrates outside the bottle (2), described absorption bottle (9) is connected with air pump (7) by conduit (6), and described conduit (6) is inserted in the middle top of absorption bottle grinding port plug (4) and stretches in the absorption bottle (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100356246A CN102033096A (en) | 2009-09-28 | 2009-09-28 | Device for extracting and concentrating arsenic-containing sample to be tested |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100356246A CN102033096A (en) | 2009-09-28 | 2009-09-28 | Device for extracting and concentrating arsenic-containing sample to be tested |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102033096A true CN102033096A (en) | 2011-04-27 |
Family
ID=43886269
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100356246A Pending CN102033096A (en) | 2009-09-28 | 2009-09-28 | Device for extracting and concentrating arsenic-containing sample to be tested |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102033096A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106370713A (en) * | 2016-08-18 | 2017-02-01 | 华东理工大学 | Light gas olefin arsenic content detection method |
-
2009
- 2009-09-28 CN CN2009100356246A patent/CN102033096A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106370713A (en) * | 2016-08-18 | 2017-02-01 | 华东理工大学 | Light gas olefin arsenic content detection method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102156152B (en) | Online detection method and device for total organic carbon of power plant water supply | |
| CN205426841U (en) | Hydrogen gas sensor | |
| CN102539468A (en) | Analytical method of nitrogen content in scrap like steel | |
| CN101210882A (en) | Method for determining soil microbes biomass carbon | |
| CN108802156A (en) | Measure the assay method of content of iodine in coal | |
| CN203465125U (en) | Oxidation sampling equipment of organic tritium | |
| CN201497668U (en) | Extraction concentrating device of measured arsenic-containing samples | |
| CN102033096A (en) | Device for extracting and concentrating arsenic-containing sample to be tested | |
| CN102323264A (en) | Method and device for testing content of sulfur in iron ore | |
| CN206311537U (en) | A kind of portable water quality PH, ORP monitoring analyzer | |
| CN102768191A (en) | Method for easily detecting trace thallium in water | |
| CN111721609A (en) | Pretreatment device and method for simultaneously treating multiple samples of hydrothermal distillation fluorine | |
| CN201611342U (en) | Automatic sample introduction Kjeldahl nitrogen determination apparatus | |
| CN110082303A (en) | The method that instrument detects COD content in water quality | |
| CN206420812U (en) | A kind of water quality testing meter | |
| CN201348580Y (en) | Chlorine gas Sampler | |
| CN207937368U (en) | A kind of system measuring soil with organic matter | |
| CN211453453U (en) | Low-conductivity water sample on-line pH meter measuring pool with ion activator | |
| CN106990141A (en) | A kind of stove water conductivity computational methods and system | |
| CN210322806U (en) | Device for detecting concentration of ferrous ions in real time | |
| CN202305497U (en) | Device for determining sulfur content in iron ore | |
| GB9918945D0 (en) | Hydrogen peroxide monitoring | |
| CN204269461U (en) | A kind of measure for pond sediment total nitrogen disappear and boil device | |
| Rogers et al. | The determination of small amounts of arsenic | |
| CN204855360U (en) | Water quality monitoring system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110427 |