CN106769924A - A kind of method for detecting heavy metal content in soil - Google Patents
A kind of method for detecting heavy metal content in soil Download PDFInfo
- Publication number
- CN106769924A CN106769924A CN201611077288.8A CN201611077288A CN106769924A CN 106769924 A CN106769924 A CN 106769924A CN 201611077288 A CN201611077288 A CN 201611077288A CN 106769924 A CN106769924 A CN 106769924A
- Authority
- CN
- China
- Prior art keywords
- solution
- absorption spectrum
- heavy metal
- content
- soil
- 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
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/44—Sample treatment involving radiation, e.g. heat
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
The invention discloses a kind of method for detecting heavy metal content in soil of offer, including soil is dried, grinding, add the filtering of alcoholic solution agitator treating, cleared up again, absorbance spectrum, then contrasted by the absorption spectrum with heavy metal titer, calculate the content of beary metal in soil, the inventive method is cleared up the leachable heavy metal in soil, cleared up rather than by all heavy metals in soil, taken into full account different shape heavy metal whether the situation that can be absorbed by plants, in addition, the inventive method calculates the content of the heavy metal species in soil digested solusion by calculating the absorption spectrum of specific heavy metal in soil digested solusion and the absorption spectrum of the heavy metal species titer, it is with strong points, accuracy rate is high.
Description
Technical field
The present invention relates to technical field of analysis and detection, specifically a kind of method for detecting heavy metal content in soil.
Background technology
Heavy metal refer to atomic density more than 5g/cm3 metallic element, there are about 45 kinds, such as copper, lead, zinc, manganese, iron, nickel, vanadium,
By the emperor himself, mercury, tungsten, aluminium, gold, silver etc..Although the heavy metals such as manganese, zinc are the trace elements required for vital movement, major part weight
Not vital movement institute is required for metal such as lead, mercury etc., and all heavy metals are all poisonous to human body more than finite concentration.
Because China pays little attention to during industry and Agriculture Production to environmental protection so that environmental pollution is increasingly
Seriously, it is the most serious that rapid test paper environment especially closely bound up with people's lives is subjected to heavy metal pollution harm.Weight
Metal can constantly be accumulated after food chain enters human body in human body, easily trigger cancer, have a strong impact on health.
Therefore, the monitoring and control of heavy metal in soil content oneself turn into be related to environmental protection, sustainable development and residence
The major issue that people's living standard is improved.
The content of the invention
Deficiency for more than, the present invention provides a kind of method for detecting heavy metal content in soil, comprises the following steps：
(1) pedotheque to be measured is taken, is dried and is ground to and be powdered；
(2) powder obtained in step (1) is put into alcoholic solution, with the speed of 1000r~2500r/min stirring 5~
10min, filtering, residue is washed with alcoholic solution, is filtered, merging filtrate, and thick liquid is obtained；
(3) thick liquid obtained in step (2) is put into HTHP digesting equipment, adds concentrated nitric acid and hydrogen peroxide, clear up 6
~9h, filtering is obtained digestion solution after cooling；
(4) light beam for sending spectrometer is by digestion solution obtained in step (3), measurement digestion solution 217.0nm,
Absorption spectrum at 193.7nm, 228.8nm；
(5) by standard lead solution (lead tolerance 10ug/1ml), measurement standard lead solution exists the light beam for sending spectrometer
Absorption spectrum at 217.0nm, the absorption spectrum and digestion solution by standard lead solution at 217.0nm are at 217.0nm
Absorption spectrum, calculate the lead content of digestion solution；
(6) by standard arsenic solution (arsenic content 10ug/1ml), measurement standard arsenic solution exists the light beam for sending spectrometer
Absorption spectrum at 193.7nm, the absorption spectrum and digestion solution by standard arsenic solution at 193.7nm are at 193.7nm
Absorption spectrum, calculates the arsenic content of digestion solution；
(7) by standard cadmium solution (cadmium content 10ug/1ml), measurement standard cadmium solution exists the light beam for sending spectrometer
Absorption spectrum at 228.8nm, the absorption spectrum and digestion solution by standard cadmium solution at 228.8nm are at 228.8nm
Absorption spectrum, calculates the cadmium content of digestion solution.
In such scheme, in step (1), the concentration of the alcoholic solution is 35%~75%.
In such scheme, in step (3), the concentration of the concentrated nitric acid is 95%~98%, and the concentration of the hydrogen peroxide is
68%~85%.
In such scheme, further, in step (3), the concentrated nitric acid of addition and the volume ratio of hydrogen peroxide are 2.1~3.5:
1。
In such scheme, in step (3), the temperature of the HTHP digesting equipment is 180~250 degrees Celsius, pressure
It is 12~15Mpa.
Beneficial effects of the present invention are：
The inventive method, carries out soil to clear up treatment using the method for concentrated nitric acid and hydrogen peroxide, rather than with tradition side
The method of the sour combination of four kinds of nitric acid, hydrochloric acid, perchloric acid and hydrofluoric acid that method is used all disappears all metal ingredients in soil
Solution is determined, and reason is：Metal ingredient in soil can be divided into two kinds, one be can not dissolution metal, this kind of metal ingredient with
Highly stable form is present, will not by plant, especially will not crops absorb, therefore it will not also be transferred to people and animal body
In vivo；Two is leachable metal, and this metalloid can especially be absorbed, and then be transferred to animal bodies by plant by crops
It is interior.During metallic pollution is administered, it is only necessary to which the content for determining leachable heavy metal in soil can determine whether the dirt of soil
Dye situation, for can not dissolution heavy metal component, then without detection.In addition, the inventive method is by calculating soil digested solusion
In the absorption spectrum of specific heavy metal and the absorption spectrum of the heavy metal species titer calculate this kind of huge sum of money in soil digested solusion
The content of category, with strong points, accuracy rate is high.
Specific embodiment
The present invention is further illustrated with reference to specific embodiment, but the present invention is not limited only to following examples.
Embodiment 1
A kind of method for detecting heavy metal content in soil, comprises the following steps：
(1) pedotheque to be measured is taken, is dried and is ground to and be powdered；
(2) powder obtained in step (1) is put into alcoholic solution, 10min is stirred with the speed of 1000r/min, filtered,
Residue is washed with alcoholic solution, filtering, and merging filtrate is obtained thick liquid；
(3) thick liquid obtained in step (2) is put into HTHP digesting equipment, adds concentrated nitric acid and hydrogen peroxide, cleared up
6h, filtering is obtained digestion solution after cooling；
(4) light beam for sending spectrometer is by digestion solution obtained in step (3), measurement digestion solution 217.0nm,
Absorption spectrum at 193.7nm, 228.8nm；
(5) by standard lead solution (lead tolerance 10ug/1ml), measurement standard lead solution exists the light beam for sending spectrometer
Absorption spectrum at 217.0nm, the absorption spectrum and digestion solution by standard lead solution at 217.0nm are at 217.0nm
Absorption spectrum, calculate the lead content of digestion solution；
(6) by standard arsenic solution (arsenic content 10ug/1ml), measurement standard arsenic solution exists the light beam for sending spectrometer
Absorption spectrum at 193.7nm, the absorption spectrum and digestion solution by standard arsenic solution at 193.7nm are at 193.7nm
Absorption spectrum, calculates the arsenic content of digestion solution；
(7) by standard cadmium solution (cadmium content 10ug/1ml), measurement standard cadmium solution exists the light beam for sending spectrometer
Absorption spectrum at 228.8nm, the absorption spectrum and digestion solution by standard cadmium solution at 228.8nm are at 228.8nm
Absorption spectrum, calculates the cadmium content of digestion solution.
In the present embodiment, the concentration of step (1) described alcoholic solution is 75%；In step (3), the concentration of the concentrated nitric acid
It is 95%, the concentration of the hydrogen peroxide is 85%.
Further, the concentrated nitric acid and the volume ratio of hydrogen peroxide that step (3) is added are 2.1:1.
In step (3), the temperature of the HTHP digesting equipment is 250 degrees Celsius, and pressure is 12Mpa.
Embodiment 2
A kind of method for detecting heavy metal content in soil, comprises the following steps：
(1) pedotheque to be measured is taken, is dried and is ground to and be powdered；
(2) powder obtained in step (1) is put into alcoholic solution, 5min is stirred with the speed of 2500r/min, filtered,
Residue is washed with alcoholic solution, filtering, and merging filtrate is obtained thick liquid；
(3) thick liquid obtained in step (2) is put into HTHP digesting equipment, adds concentrated nitric acid and hydrogen peroxide, cleared up
9h, filtering is obtained digestion solution after cooling；
(4) light beam for sending spectrometer is by digestion solution obtained in step (3), measurement digestion solution 217.0nm,
Absorption spectrum at 193.7nm, 228.8nm；
(5) by standard lead solution (lead tolerance 10ug/1ml), measurement standard lead solution exists the light beam for sending spectrometer
Absorption spectrum at 217.0nm, the absorption spectrum and digestion solution by standard lead solution at 217.0nm are at 217.0nm
Absorption spectrum, calculate the lead content of digestion solution；
(6) by standard arsenic solution (arsenic content 10ug/1ml), measurement standard arsenic solution exists the light beam for sending spectrometer
Absorption spectrum at 193.7nm, the absorption spectrum and digestion solution by standard arsenic solution at 193.7nm are at 193.7nm
Absorption spectrum, calculates the arsenic content of digestion solution；
(7) by standard cadmium solution (cadmium content 10ug/1ml), measurement standard cadmium solution exists the light beam for sending spectrometer
Absorption spectrum at 228.8nm, the absorption spectrum and digestion solution by standard cadmium solution at 228.8nm are at 228.8nm
Absorption spectrum, calculates the cadmium content of digestion solution.
In the present embodiment, specifically, the concentration of step (1) described alcoholic solution is 35%；Step (3) described concentrated nitric acid
Concentration is 98%, and the concentration of the hydrogen peroxide is 68%.
Further, in step (3), the concentrated nitric acid of addition and the volume ratio of hydrogen peroxide are 3.5:1.
The temperature of step (3) the HTHP digesting equipment is 180 degrees Celsius, and pressure is 15Mpa.
Embodiment 3
A kind of method for detecting heavy metal content in soil, comprises the following steps：
(1) pedotheque to be measured is taken, is dried and is ground to and be powdered；
(2) powder obtained in step (1) is put into alcoholic solution, 8min is stirred with the speed of 1500r/min, filtered,
Residue is washed with alcoholic solution, filtering, and merging filtrate is obtained thick liquid；
(3) thick liquid obtained in step (2) is put into HTHP digesting equipment, adds concentrated nitric acid and hydrogen peroxide, cleared up
8h, filtering is obtained digestion solution after cooling；
(4) light beam for sending spectrometer is by digestion solution obtained in step (3), measurement digestion solution 217.0nm,
Absorption spectrum at 193.7nm, 228.8nm；
(5) by standard lead solution (lead tolerance 10ug/1ml), measurement standard lead solution exists the light beam for sending spectrometer
Absorption spectrum at 217.0nm, the absorption spectrum and digestion solution by standard lead solution at 217.0nm are at 217.0nm
Absorption spectrum, calculate the lead content of digestion solution；
(6) by standard arsenic solution (arsenic content 10ug/1ml), measurement standard arsenic solution exists the light beam for sending spectrometer
Absorption spectrum at 193.7nm, the absorption spectrum and digestion solution by standard arsenic solution at 193.7nm are at 193.7nm
Absorption spectrum, calculates the arsenic content of digestion solution；
(7) by standard cadmium solution (cadmium content 10ug/1ml), measurement standard cadmium solution exists the light beam for sending spectrometer
Absorption spectrum at 228.8nm, the absorption spectrum and digestion solution by standard cadmium solution at 228.8nm are at 228.8nm
Absorption spectrum, calculates the cadmium content of digestion solution；
In such scheme, the concentration of step (1) described alcoholic solution is 60%.
In such scheme, the concentration of step (3) described concentrated nitric acid is 97%, and the concentration of the hydrogen peroxide is 80%.
In such scheme, further, the volume ratio of concentrated nitric acid and hydrogen peroxide described in step (3) is 3:1.
In such scheme, the temperature of step (3) the HTHP digesting equipment is 200 degrees Celsius, and pressure is 14Mpa.
Experimental example
Test experience is carried out on He Wuli towns in that Peng Zhen of Qiezhou, rhinoceros pin town, is selected in 3 towns and is selected identical respectively
Soil, carries out 3 detection experiments, and lead, arsenic, cadmium content in detection soil are examined using the method for above-described embodiment 1~3
Survey.Result is as shown in table 1：
Table 1
It is not difficult to find out from the experimental result of above-mentioned table 1：Content of beary metal in the inventive method detection soil, stability
By force, accuracy rate is high.
Claims (5)
1. it is a kind of detect heavy metal content in soil method, it is characterised in that comprise the following steps：
(1) pedotheque to be measured is taken, is dried and is ground to and be powdered；
(2) powder obtained in step (1) is put into alcoholic solution, with the speed of 1000r~2500r/min stirring 5~
10min, filtering, residue is washed with alcoholic solution, is filtered, merging filtrate, and thick liquid is obtained；
(3) thick liquid obtained in step (2) is put into HTHP digesting equipment, adds concentrated nitric acid and hydrogen peroxide, clear up 6~
9h, filtering is obtained digestion solution after cooling；
(4) light beam for sending spectrometer is by digestion solution obtained in step (3), measurement digestion solution 217.0nm, 193.7nm,
Absorption spectrum at 228.8nm；
(5) by standard lead solution (lead tolerance 10ug/1ml), measurement standard lead solution exists the light beam for sending spectrometer
Absorption spectrum at 217.0nm, the absorption spectrum and digestion solution by standard lead solution at 217.0nm are at 217.0nm
Absorption spectrum, calculate the lead content of digestion solution；
(6) by standard arsenic solution (arsenic content 10ug/1ml), measurement standard arsenic solution exists the light beam for sending spectrometer
Absorption spectrum at 193.7nm, the absorption spectrum and digestion solution by standard arsenic solution at 193.7nm are at 193.7nm
Absorption spectrum, calculates the arsenic content of digestion solution；
(7) by standard cadmium solution (cadmium content 10ug/1ml), measurement standard cadmium solution exists the light beam for sending spectrometer
Absorption spectrum at 228.8nm, the absorption spectrum and digestion solution by standard cadmium solution at 228.8nm are at 228.8nm
Absorption spectrum, calculates the cadmium content of digestion solution.
2. it is according to claim 1 detection heavy metal content in soil method, it is characterised in that：In step (1), the wine
The concentration of smart solution is 35%~75%.
3. it is according to claim 1 detection heavy metal content in soil method, it is characterised in that：It is described dense in step (3)
The concentration of nitric acid is 95%~98%, and the concentration of the hydrogen peroxide is 68%~85%.
4. it is according to claim 1 detection heavy metal content in soil method, it is characterised in that：In step (3), addition
The volume ratio of concentrated nitric acid and hydrogen peroxide is 2.1~3.5:1.
5. it is according to claim 1 detection heavy metal content in soil method, it is characterised in that：In step (3), the height
The temperature of warm high-pressure digestion equipment is 180~250 degrees Celsius, and pressure is 12~15Mpa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611077288.8A CN106769924A (en) | 2016-11-30 | 2016-11-30 | A kind of method for detecting heavy metal content in soil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611077288.8A CN106769924A (en) | 2016-11-30 | 2016-11-30 | A kind of method for detecting heavy metal content in soil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106769924A true CN106769924A (en) | 2017-05-31 |
Family
ID=58898779
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611077288.8A Pending CN106769924A (en) | 2016-11-30 | 2016-11-30 | A kind of method for detecting heavy metal content in soil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106769924A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107167361A (en) * | 2017-07-07 | 2017-09-15 | 苏州汉宣检测科技有限公司 | A kind of heavy metal in soil content analysis method |
| CN107702961A (en) * | 2017-11-20 | 2018-02-16 | 郑州德析检测技术有限公司 | A kind of method of heavy metal-polluted soil resolution improvement pre-treatment |
| CN111337335A (en) * | 2020-02-17 | 2020-06-26 | 农业农村部环境保护科研监测所 | Cadmium digestion and purification separation method for cadmium-containing iron and organic matter mixed sample |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998020341A1 (en) * | 1996-11-08 | 1998-05-14 | Mountain States Analytical, Inc. | Sample preparation for metals analysis using accelerated acid digestion (aad) |
| CN103558068A (en) * | 2013-10-31 | 2014-02-05 | 大连大公环境检测有限公司 | Pretreatment method for soil detection |
| CN105466752A (en) * | 2016-01-09 | 2016-04-06 | 上海博优测试技术有限公司 | Pretreatment method for determining of heavy metal in soil |
| CN105606435A (en) * | 2016-03-29 | 2016-05-25 | 山西省环境科学研究院 | Pretreatment method for measuring content of mercury in soil and detection method using same |
| CN105606590A (en) * | 2014-11-24 | 2016-05-25 | 中国科学院生态环境研究中心 | Method for simultaneously determining contents of various elements in soil or deposits |
-
2016
- 2016-11-30 CN CN201611077288.8A patent/CN106769924A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998020341A1 (en) * | 1996-11-08 | 1998-05-14 | Mountain States Analytical, Inc. | Sample preparation for metals analysis using accelerated acid digestion (aad) |
| CN103558068A (en) * | 2013-10-31 | 2014-02-05 | 大连大公环境检测有限公司 | Pretreatment method for soil detection |
| CN105606590A (en) * | 2014-11-24 | 2016-05-25 | 中国科学院生态环境研究中心 | Method for simultaneously determining contents of various elements in soil or deposits |
| CN105466752A (en) * | 2016-01-09 | 2016-04-06 | 上海博优测试技术有限公司 | Pretreatment method for determining of heavy metal in soil |
| CN105606435A (en) * | 2016-03-29 | 2016-05-25 | 山西省环境科学研究院 | Pretreatment method for measuring content of mercury in soil and detection method using same |
Non-Patent Citations (1)
| Title |
|---|
| 褚卓栋 等: "高压密闭消解土壤砷、汞、铅、镉酸体系比较", 《中国环境监测》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107167361A (en) * | 2017-07-07 | 2017-09-15 | 苏州汉宣检测科技有限公司 | A kind of heavy metal in soil content analysis method |
| CN107702961A (en) * | 2017-11-20 | 2018-02-16 | 郑州德析检测技术有限公司 | A kind of method of heavy metal-polluted soil resolution improvement pre-treatment |
| CN111337335A (en) * | 2020-02-17 | 2020-06-26 | 农业农村部环境保护科研监测所 | Cadmium digestion and purification separation method for cadmium-containing iron and organic matter mixed sample |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Liu et al. | A turn-on and reversible fluorescence sensor for Al 3+ ion | |
| CN106769924A (en) | A kind of method for detecting heavy metal content in soil | |
| Colak et al. | Determination of trace metal content of various herbal and fruit teas produced and marketed in Turkey. | |
| CN104697983A (en) | Method of detecting heavy metal lead, cadmium, arsenic and copper in TCM (Traditional Chinese Medicine) tablet | |
| CN103454131B (en) | The efficient assay method of cobalt, nickel, aluminium content in a kind of natural micro alloy iron powder | |
| CN102519948B (en) | Detection method for hexavalent chromium ions | |
| Ha et al. | “Green” colorimetric assay for the selective detection of trivalent chromium based on Xanthoceras sorbifolia tannin attached to gold nanoparticles | |
| Turkoglu et al. | Spectrophotometric determination of copper in natural waters and pharmaceutical samples with chloro (phenyl) glyoxime | |
| CN103471889B (en) | Utilize the stable gold nano grain of gamma-polyglutamic acid-to detect the method for trivalent chromic ion | |
| Abderrahim et al. | A new sorbent for uranium extraction: polyethyleniminephenylphosphonamidic acid | |
| CN104316522A (en) | Method for rapidly detecting organophosphorus pesticides in vegetables by using Nanogold colorimetric method | |
| CN104359879B (en) | A kind of Resonance Rayleigh Scattering Spectral Method for determining tea polyphenols | |
| Niu et al. | Highly selective, sensitive and fast-responsive fluorescent sensor for Hg2+ | |
| CN104236966A (en) | Method for detecting content of extractable arsenic in textile | |
| Yardımcı et al. | Spectrophotometric fluoride determination using St. John’s wort extract as a green chromogenic complexant for Al (III) | |
| CN105973869A (en) | Method for rapidly detecting urotropin by using Raman spectrum | |
| CN103454264A (en) | Determination method of contents of vanadium, titanium and chromium in natural microalloy iron powder | |
| CN102841061A (en) | Method for detecting nickelous ions | |
| CN108007927A (en) | A kind of method that manganese content in manganese slag is detected using EDTA proportion optimization designs | |
| CN104892598A (en) | A 1,10-fenanthrolin derivative, a preparing method thereof and applications of the derivative | |
| CN103528969A (en) | Method for detecting bivalent copper ions and reagent kit | |
| CN105806788A (en) | Rapid analysis method for concentration of cyanide in cyanide leaching solution of gold ore | |
| CN102830078A (en) | Method for detecting bivalent manganese ions | |
| CN104122216A (en) | Copper ion spectrum probe as well as preparation method and application thereof | |
| De Stefano et al. | Uranium (VI) sequestration by polyacrylic and fulvic acids in aqueous solution |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170531 |