CN107702975A - A kind of pre-treating method of soil minor metallic element detection - Google Patents

A kind of pre-treating method of soil minor metallic element detection Download PDF

Info

Publication number
CN107702975A
CN107702975A CN201710802572.5A CN201710802572A CN107702975A CN 107702975 A CN107702975 A CN 107702975A CN 201710802572 A CN201710802572 A CN 201710802572A CN 107702975 A CN107702975 A CN 107702975A
Authority
CN
China
Prior art keywords
soil
pipeline section
section
separating pipe
resolution
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.)
Granted
Application number
CN201710802572.5A
Other languages
Chinese (zh)
Other versions
CN107702975B (en
Inventor
刘琴
石群
李子孟
王范盛
杨录虎
祝银
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhejiang Marine Fisheries Research Institute
Original Assignee
Zhejiang Marine Fisheries Research Institute
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Zhejiang Marine Fisheries Research Institute filed Critical Zhejiang Marine Fisheries Research Institute
Priority to CN201710802572.5A priority Critical patent/CN107702975B/en
Publication of CN107702975A publication Critical patent/CN107702975A/en
Application granted granted Critical
Publication of CN107702975B publication Critical patent/CN107702975B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00Sampling; Preparing specimens for investigation
    • G01N1/28Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
    • G01N1/44Sample treatment involving radiation, e.g. heat
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00Sampling; Preparing specimens for investigation
    • G01N1/28Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
    • G01N1/286Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00Sampling; Preparing specimens for investigation
    • G01N1/28Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
    • G01N1/286Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
    • G01N2001/2866Grinding or homogeneising

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)
  • Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)

Abstract

The present invention relates to Soil K+adsorption technical field, and in particular to a kind of pre-treating method of soil minor metallic element detection, comprises the following steps:It is added to after soil treatment in separating pipe, sequentially add nitric acid, hydrofluoric acid progressively clears up soil with perchloric acid solution, a kind of lower acid solution is added after a kind of separation of acid solution, separating pipe wherein used includes two vertical pipeline sections and horizontally disposed resolution pipeline section, two vertical pipeline sections include charging pipeline section and the drain pipe section being staggeredly arranged below charging pipeline section, the lower end of charging pipeline section connects with the upper end of drain pipe section through clearing up pipeline section, the internal diameter for clearing up pipeline section is gradually reduced from charging pipeline section to drain pipe section, so that resolution pipeline section interior edge equidirectional forms liquid storage reaction zone from deep to shallow.The present invention clears up soil substep, avoids the mixing of perchloric acid and nitric acid, improves resolution effect, separating pipe can efficiently separate acid solution, and can be directly added into a kind of lower acid solution after a kind of separation of acid solution, reduce the loss amount of solution.

Description

A kind of pre-treating method of soil minor metallic element detection
Technical field
The present invention relates to Soil K+adsorption technical field, and in particular to a kind of pre-treatment side of soil minor metallic element detection Method.
Background technology
Due to the complexity of soil texture, the content that the content of soil is particularly wherein heavy metal element is detected, it is necessary to Soil is cleared up.Currently used digestion procedure has three kinds of wet method, dry ashing method and micro-wave digestion.Wherein it is used as detection side Wet in the standard GB/T 17141-1997 of method foundation is to weigh a small amount of sample to add nitric acid, and then adds hydrogen fluorine Acid and perchloric acid.Nitric acid destroys the lattice structure of soil, makes to separate out embedded in heavy metal element therein, hydrofluoric acid destroys silica Lattice structure, chemically react:SiO2(s) + 4 HF(aq) → SiF4(g) + 2 H2O (l), perchloric acid can be broken Organic composition in bad soil, make the heavy metal element analysis in the agron of formation after being enriched in originally in animal and plant body Go out.But in place of this method Shortcomings, i.e., nitric acid reacts with perchloric acid:HNO3+HClO4→NO2++H2O+ClO4-, Wherein NO2+For nitro cation, i.e. nitric acid obtains proton in perchloric acid and shows alkalescence and soil is disappeared so as to reduce nitric acid The effect of solution, and perchloric acid and the lower valency reaction of nitrogen oxides contained in nitric acid, can also reduce resolution of the perchloric acid to soil Effect.
The content of the invention
Being sequentially added mixing in soil for nitric acid, hydrofluoric acid, perchloric acid in National Standard Method can occur nitric acid and perchloric acid Reaction reduces the problem of resolution effect, and it is an object of the invention to provide a kind of pre-treatment side of soil minor metallic element detection Method, nitric acid, hydrofluoric acid, perchloric acid are added in soil successively and progressively cleared up, avoids nitric acid from being mixed with perchloric acid, improve resolution Effect.
The present invention provides following technical scheme:
A kind of pre-treating method of soil minor metallic element detection, comprises the following steps:
(1)Soil treatment:Sieving is ground after soil is dried, is then added in separating pipe, separating pipe is heated in a water bath;
(2)Nitric acid is cleared up:The salpeter solution that mass percent is 40wt%~45wt% is added into separating pipe and submerges soil, ultrasound Auxiliary resolution to bubble-free, then by salpeter solution from separating pipe isolated primary first-order equation liquid;
(3)Hydrofluoric acid is cleared up:The hydrofluoric acid solution that mass percent is 37wt%~40wt% is continuously added into separating pipe to submerge Soil, ultrasonic wave added clear up to bubble-free after by hydrofluoric acid from separating pipe isolated secondary response liquid;
(4)Perchloric acid is cleared up:The perchloric acid solution that mass percent is 70wt%~72wt% is continuously added into separating pipe to submerge Soil, ultrasonic wave added clear up to bubble-free after by perchloric acid from separating pipe isolated third-order reaction liquid;
(5)It is prepared by constant volume:Primary first-order equation liquid, secondary response liquid, third-order reaction liquid are mixed to get digestion solution, heating concentration resolution Liquid, then add water constant volume.
In the method for the present invention, salpeter solution is fed first into separating pipe and mixed with soil, in water-bath and ultrasonic bar Soil is cleared up under part, waits salpeter solution after the completion of clearing up isolated primary first-order equation liquid, Ran Houzai from separating pipe Sequentially add hydrofluoric acid, perchloric acid is progressively cleared up, finally primary first-order equation liquid, secondary response liquid are mixed with third-order reaction liquid Obtain digestion solution.So nitric acid, hydrofluoric acid, perchloric acid are added in soil successively and progressively cleared up, and through separating pipe separation from And the mixing of nitric acid and perchloric acid is avoided, improve resolution effect.
One kind as the inventive method is improved, and separating pipe includes two vertical pipeline sections and horizontally disposed resolution pipeline section, and two Vertical pipeline section includes charging pipeline section and the drain pipe section being staggeredly arranged below charging pipeline section, the lower end for the pipeline section that feeds and drain pipe Through clearing up pipeline section connection, the internal diameter for clearing up pipeline section is gradually reduced from charging pipeline section to the direction of drain pipe section for the upper end of section, So that resolution inner tube segment forms liquid storage reaction zone from deep to shallow in same direction.Separating pipe includes charging pipeline section, goes out liquid Pipeline section and resolution pipeline section, the internal diameter for clearing up pipeline section are gradually reduced to drain pipe section from charging pipeline section and form liquid storage reaction zone, this Soil is entered in separating pipe and falls the liquid storage reaction zone in resolution pipeline section by sample from charging pipeline section, is then added to hydrofluoric acid Resolution soil in liquid storage reaction zone, separating pipe is tilted into 10 °~30 ° to drain pipe section makes hydrofluoric acid slowly be flowed from liquid storage reaction zone Separated into drain pipe Duan Bingcong separating pipes, then carry out the resolution of salpeter solution, perchloric acid solution successively with separating, both realized Progressively clear up, reduce the solution loss in separation process or soil loss again, and separate can be direct after a kind of acid solution A kind of acid solution resolution, without adding water to clean in soil, reduces the task of subsequent concentration under addition.
One kind as the inventive method is improved, clear up pipeline section cross section inner circle with the cylindrical center of circle in vertical direction On deviate, make cross section in off-centre operation annular.The highest liquid level line of liquid storage reaction zone is set to be in the cylindrical center of circle of digestion tube Top, the volume capacity of raising liquid storage reaction zone, and resolution pipeline section and the internal diameter that drain pipe section mutually picks out are big, flow liquid speed It hurry up.
One kind as the inventive method is improved, and resolution pipeline section is being provided with filter membrane close to the junction of itself and drain pipe section Plate, all sides of filter membrane plate and clears up the medial surface of pipeline section and fits, and the material of filter membrane plate is polytetrafluoroethylene (PTFE), the hole of filter membrane plate Footpath is 20~50 μm.Prevent a small amount of soil from flowing out separating pipe with acid solution, improve detection accuracy degree.
One kind as the inventive method is improved, and drain pipe section is provided with stop valve, and the port of export of drain pipe section, which is provided with, leads Stem bar.
Stop valve conveniently controls the solution in separating pipe, avoids maloperation from causing solution to flow out, and flow-guiding mouth can avoid it is molten Drop is spilt when liquid stream goes out, and reduces wetted area of the solution to drain pipe section port.
One kind as the inventive method is improved, and the drying temperature of soil is 200~300 DEG C, and drying time 8~12 is small When, it is 100~200 mesh to cross grit number.Accelerate digestion process, remove the impurity such as moisture.
One kind as the inventive method is improved, and bath temperature is 60~80 DEG C, and the power of ultrasonic wave is 45~60W, is surpassed Sound time 10min.Accelerate digestion process, improve resolution efficiency.
One kind as the inventive method is improved, and the quality of the soil added in separating pipe is 0.5~0.75g, and nitric acid is molten The volume of liquid is 4~6mL, and the volume of hydrofluoric acid solution is 2~3mL, and the volume of perchloric acid solution is 2~3mL.Select in right amount Soil improves the speed of follow-up heating concentration with acid solution while realizing to Soil K+adsorption.
One kind as the inventive method is improved, step(5)Middle heating-up temperature is 150~200 DEG C, digestion solution after concentration Volume is 1~2mL.Excessive acid solution is evaporated, facilitates subsequent instrumentation to detect.
Beneficial effects of the present invention are as follows:
The pre-treating method of the soil minor metallic element detection of the present invention first clears up soil substep, avoids perchloric acid and nitre The mixing of acid, resolution effect is improved, while the separating pipe selected can be realized and efficiently separate acid solution, and a kind of acid solution is divided A kind of lower acid solution can be directly added into from after to be cleared up, and reduced the loss amount of solution, improved operating efficiency.
Brief description of the drawings
Fig. 1 is the configuration diagram of the separating pipe of the inventive method.
Fig. 2 is the cross sectional view at A-A in Fig. 1.
In figure:1st, separating pipe, 11, charging pipeline section, 12, resolution pipeline section, 13, drain pipe section, 14, liquid storage reaction zone, 15, lead Stem bar, 2, filter membrane plate, 3, stop valve, 4, highest liquid level line.
Embodiment
Just the embodiment of the present invention is described further below in conjunction with the accompanying drawings.
Unless otherwise instructed, the raw material employed in the present invention is commercially available or commonly used in the art, such as Without special instruction, the method in following embodiments is the conventional method of this area.
Separating pipe used in the inventive method of embodiment 1
As shown in figure 1, the "the" shape that the separating pipe 1 of the present invention is placed in erectting, including two vertical pipeline sections and horizontally disposed Pipeline section 12 is cleared up, two vertical pipeline sections include charging pipeline section 11 and the drain pipe section 13 being staggeredly arranged below charging pipeline section, charging The upper end of the lower end of pipeline section and drain pipe section connect through clearing up pipeline section, clears up the internal diameter of pipeline section in the pipeline section that feeds to drain pipe section Walk and be gradually reduced upwards so that form liquid storage reaction zone 14 in resolution pipeline section, the depth of liquid storage reaction zone prolong charging pipeline section to The trend of drain pipe section is gradually from depth to shallow change.The material of separating pipe is the transparent organic resin of acid and alkali-resistance, such as poly- methyl Methyl acrylate lucite.For ease of improve flow rate of liquid, as shown in Fig. 2 resolution pipeline section cross section inner circle with it is cylindrical Center of circle in the vertical direction deviate, cross section and is so made the highest liquid level of liquid storage reaction zone in off-centre operation annular Line 4 did not had the cylindrical center of circle of the cross section of resolution pipeline section, increased the capacity of liquid storage reaction zone.For convenience of separation acid solution and retain Soil, resolution pipeline section are being provided with filter membrane plate 2, all sides and the resolution pipeline section of filter membrane plate close to the junction of itself and drain pipe section Medial surface fits, and the material of filter membrane plate is polytetrafluoroethylene (PTFE), and the aperture of filter membrane plate is 20~50 μm.For convenience of condition acid solution, Drain pipe section is provided with stop valve 3, and the port of export of drain pipe section is provided with flow-guiding mouth 15.
Need from separating pipe separate acid solution when, be first turned on stop valve, then separating pipe is tilted clockwise 10 °~ 30 °, the acid solution in separating pipe is entered liquid storage pipeline section through filter membrane plate from liquid storage reaction zone, collection acid is moved down into flow-guiding mouth water conservancy diversion In the vessel of liquid, the soil of liquid storage reaction zone then keeps in situ, and very small amount retains with the soil that acid solution flow through filter membrane plate, when dividing Fallen back to after recovering vertical state from pipe on the side of liquid storage reaction zone, and the acid solution with being again added in separating pipe mixes, The progressively resolution of nitric acid, hydrofluoric acid and perchloric acid to soil has been achieved in that, has avoided nitric acid from being mixed with perchloric acid and influences resolution Effect, and can directly add down a kind of acid solution after separating a kind of acid solution, it is not necessary to soil is washed, that is, reduced molten Liquid loses, and facilitates follow-up concentration again.
The implementation steps of the inventive method of embodiment 2
A kind of pre-treating method of soil minor metallic element detection, comprises the following steps:
(1)Soil treatment:Soil is ground after 200 DEG C of 12 hours drying times, then the screen cloth sieving through 100 mesh, took Soil 0.5g after sieve adds the liquid storage reaction zone of resolution pipeline section from charging pipeline section, is then placed in separating pipe in 60 DEG C of water-bath Heat 90min;
(2)Nitric acid is cleared up:The salpeter solution 4mL submergence soil that mass percent is 40wt% is added into separating pipe in a water bath Earth, ultrasonic wave added are cleared up to bubble-free, and the power of ultrasonic wave is 45W, ultrasonic time 15min, then by separating pipe from water-bath Salpeter solution is separated after taking-up and obtains primary first-order equation liquid;
(3)Hydrofluoric acid is cleared up:Separating pipe is placed in water-bath and adds the hydrofluoric acid solution 3mL that mass percent is 37wt% and is soaked No soil, ultrasonic wave added is cleared up to bubble-free, and the power of ultrasonic wave is 45W, ultrasonic time 15min, then by separating pipe from water Separation hydrofluoric acid solution obtains secondary response liquid after being taken out in bath;
(4)Perchloric acid is cleared up:Separating pipe is placed in water-bath and adds the perchloric acid solution 2mL that mass percent is 70wt% and is soaked No soil, ultrasonic wave added is cleared up to bubble-free, and the power of ultrasonic wave is 45W, ultrasonic time 10min, then by perchloric acid from water Separation perchloric acid solution obtains third-order reaction liquid after being taken out in bath;
(5)It is prepared by constant volume:Primary first-order equation liquid, secondary response liquid, third-order reaction liquid are mixed to get digestion solution, added at 150 DEG C Heat concentration, adds water constant volume when the volume of digestion solution is 1mL.
The implementation steps of the inventive method of embodiment 3
A kind of pre-treating method of soil minor metallic element detection, comprises the following steps:
(1)Soil treatment:Soil is ground after 250 DEG C of 10 hours drying times, then the screen cloth sieving through 150 mesh, took Soil 0.625g after sieve adds the liquid storage reaction zone of resolution pipeline section from charging pipeline section, then separating pipe is placed in 70 DEG C of water-bath Middle heating 60min;
(2)Nitric acid is cleared up:The salpeter solution 5mL submergence soil that mass percent is 42wt% is added into separating pipe in a water bath Earth, ultrasonic wave added are cleared up to bubble-free, and the power of ultrasonic wave is 55W, ultrasonic time 12min, then by separating pipe from water-bath Salpeter solution is separated after taking-up and obtains primary first-order equation liquid;
(3)Hydrofluoric acid is cleared up:Separating pipe is placed in water-bath and adds the hydrofluoric acid solution 2.5mL that mass percent is 38wt% Submerge soil, ultrasonic wave added is cleared up to bubble-free, and the power of ultrasonic wave is 55W, ultrasonic time 12min, then by separating pipe from Separation hydrofluoric acid solution obtains secondary response liquid after being taken out in water-bath;
(4)Perchloric acid is cleared up:Separating pipe is placed in water-bath and adds the perchloric acid solution 2.5mL that mass percent is 71wt% Submerge soil, ultrasonic wave added is cleared up to bubble-free, and the power of ultrasonic wave is 55W, ultrasonic time 12min, then by perchloric acid from Separation perchloric acid solution obtains third-order reaction liquid after being taken out in water-bath;
(5)It is prepared by constant volume:Primary first-order equation liquid, secondary response liquid, third-order reaction liquid are mixed to get digestion solution, added at 180 DEG C Heat concentration, adds water constant volume when the volume of digestion solution is 1.5mL.
The implementation steps of the inventive method of embodiment 4
A kind of pre-treating method of soil minor metallic element detection, comprises the following steps:
(1)Soil treatment:Soil is ground after 300 DEG C of 8 hours drying times, then the screen cloth sieving through 200 mesh, takes sieving Soil 0.75g afterwards adds the liquid storage reaction zone of resolution pipeline section from charging pipeline section, is then placed in separating pipe in 80 DEG C of water-bath Heat 30min;
(2)Nitric acid is cleared up:The salpeter solution 6mL submergence soil that mass percent is 45wt% is added into separating pipe in a water bath Earth, ultrasonic wave added are cleared up to bubble-free, and the power of ultrasonic wave is 60W, ultrasonic time 10min, then by separating pipe from water-bath Salpeter solution is separated after taking-up and obtains primary first-order equation liquid;
(3)Hydrofluoric acid is cleared up:Separating pipe is placed in water-bath and adds the hydrofluoric acid solution 3mL that mass percent is 40wt% and is soaked No soil, ultrasonic wave added is cleared up to bubble-free, and the power of ultrasonic wave is 60W, ultrasonic time 10min, then by separating pipe from water Separation hydrofluoric acid solution obtains secondary response liquid after being taken out in bath;
(4)Perchloric acid is cleared up:Separating pipe is placed in water-bath and adds the perchloric acid solution 3mL that mass percent is 72wt% and is soaked No soil, ultrasonic wave added is cleared up to bubble-free, and the power of ultrasonic wave is 60W, ultrasonic time 10min, then by perchloric acid from water Separation perchloric acid solution obtains third-order reaction liquid after being taken out in bath;
(5)It is prepared by constant volume:Primary first-order equation liquid, secondary response liquid, third-order reaction liquid are mixed to get digestion solution, added at 200 DEG C Heat concentration, adds water constant volume when the volume of digestion solution is 2mL.

Claims (9)

1. a kind of pre-treating method of soil minor metallic element detection, comprises the following steps:
(1)Soil treatment:Sieving is ground after soil is dried, is then added in separating pipe, separating pipe is heated in a water bath;
(2)Nitric acid is cleared up:The salpeter solution that mass percent is 40wt%~45wt% is added into separating pipe and submerges soil, ultrasound Auxiliary resolution to bubble-free, then by salpeter solution from separating pipe isolated primary first-order equation liquid;
(3)Hydrofluoric acid is cleared up:The hydrofluoric acid solution that mass percent is 37wt%~40wt% is continuously added into separating pipe to submerge Soil, ultrasonic wave added clear up to bubble-free after by hydrofluoric acid from separating pipe isolated secondary response liquid;
(4)Perchloric acid is cleared up:The perchloric acid solution that mass percent is 70wt%~72wt% is continuously added into separating pipe to submerge Soil, ultrasonic wave added clear up to bubble-free after by perchloric acid from separating pipe isolated third-order reaction liquid;
(5)It is prepared by constant volume:Primary first-order equation liquid, secondary response liquid, third-order reaction liquid are mixed to get digestion solution, heating concentration resolution Liquid, then add water constant volume.
2. the pre-treating method of soil minor metallic element detection according to claim 1, it is characterised in that separating pipe bag Two vertical pipeline sections and horizontally disposed resolution pipeline section are included, two vertical pipeline sections include charging pipeline section and the cloth that staggers below charging pipeline section The drain pipe section put, the lower end for the pipeline section that feeds and the upper end of drain pipe section connect through clearing up pipeline section, clear up the internal diameter of pipeline section from Charging pipeline section is to being gradually reduced on the direction of drain pipe section, so that resolution inner tube segment is formed from deep to shallow in same direction Liquid storage reaction zone.
3. the pre-treating method of soil minor metallic element detection according to claim 2, it is characterised in that resolution pipeline section The inner circle of cross section deviated with cylindrical center of circle in the vertical direction, make cross section in off-centre operation annular.
4. the pre-treating method of soil minor metallic element detection according to claim 2, it is characterised in that resolution pipeline section Filter membrane plate is being provided with close to the junction of itself and drain pipe section, all sides of filter membrane plate fit with clearing up the medial surface of pipeline section, The material of filter membrane plate is polytetrafluoroethylene (PTFE), and the aperture of filter membrane plate is 20~50 μm.
5. the pre-treating method of the soil minor metallic element detection according to Claims 2 or 3 or 4, it is characterised in that go out Liquid pipe section is provided with stop valve, and the port of export of drain pipe section is provided with flow-guiding mouth.
6. the pre-treating method of soil minor metallic element detection according to claim 1, it is characterised in that soil is done Dry temperature is 200~300 DEG C, and 8~12 hours drying times, it is 100~200 mesh to cross grit number.
7. the pre-treating method of soil minor metallic element detection according to claim 1, it is characterised in that bath temperature For 60~80 DEG C, the power of ultrasonic wave is 45~60W, 10~15min of ultrasonic time.
8. the pre-treating method of soil minor metallic element detection according to claim 1, it is characterised in that in separating pipe The quality of the soil of addition is 0.5~0.75g, and the volume of salpeter solution is 4~6mL, and the volume of hydrofluoric acid solution is 2~3mL, The volume of perchloric acid solution is 2~3mL.
9. the pre-treating method of soil minor metallic element detection according to claim 1, it is characterised in that step(5) Middle heating-up temperature is 150~200 DEG C, and the volume of digestion solution is 1~2mL after concentration.
CN201710802572.5A 2017-09-07 2017-09-07 Pretreatment method for detecting trace metal elements in soil Active CN107702975B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710802572.5A CN107702975B (en) 2017-09-07 2017-09-07 Pretreatment method for detecting trace metal elements in soil

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710802572.5A CN107702975B (en) 2017-09-07 2017-09-07 Pretreatment method for detecting trace metal elements in soil

Publications (2)

Publication Number Publication Date
CN107702975A true CN107702975A (en) 2018-02-16
CN107702975B CN107702975B (en) 2020-04-03

Family

ID=61172276

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710802572.5A Active CN107702975B (en) 2017-09-07 2017-09-07 Pretreatment method for detecting trace metal elements in soil

Country Status (1)

Country Link
CN (1) CN107702975B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109507012A (en) * 2018-12-25 2019-03-22 广电计量检测(湖南)有限公司 The full potassium digestion procedure of total Phosphorus In Soil and detection method
CN111948007A (en) * 2020-09-17 2020-11-17 中国环境监测总站 Method for measuring various metal elements in soil

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101634617A (en) * 2009-08-18 2010-01-27 广东省生态环境与土壤研究所 Digestion method of soil metal elements
CN104931330A (en) * 2015-06-11 2015-09-23 大连谱尼测试科技有限公司 Digestion method of detection of heavy metals in soil
CN106092720A (en) * 2016-08-19 2016-11-09 上海应用技术学院 A kind of Soil K+adsorption measures the micro-wave digestion pre-treating method of total sodium potassium calcium content

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101634617A (en) * 2009-08-18 2010-01-27 广东省生态环境与土壤研究所 Digestion method of soil metal elements
CN104931330A (en) * 2015-06-11 2015-09-23 大连谱尼测试科技有限公司 Digestion method of detection of heavy metals in soil
CN106092720A (en) * 2016-08-19 2016-11-09 上海应用技术学院 A kind of Soil K+adsorption measures the micro-wave digestion pre-treating method of total sodium potassium calcium content

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109507012A (en) * 2018-12-25 2019-03-22 广电计量检测(湖南)有限公司 The full potassium digestion procedure of total Phosphorus In Soil and detection method
CN111948007A (en) * 2020-09-17 2020-11-17 中国环境监测总站 Method for measuring various metal elements in soil
CN111948007B (en) * 2020-09-17 2023-04-07 中国环境监测总站 Method for measuring various metal elements in soil

Also Published As

Publication number Publication date
CN107702975B (en) 2020-04-03

Similar Documents

Publication Publication Date Title
CN107702975A (en) A kind of pre-treating method of soil minor metallic element detection
CN106630531A (en) Water-conservancy dredging equipment with follow-up sludge treatment function
WO2020073609A1 (en) Soil remediation device for heavy metal-contaminated soil
CN211255539U (en) Mine waste water treatment equipment
CN103645085B (en) The apparatus and method of the online sedimentation of the dense thick complicated feed liquid matrix of high temperature
JP2022044528A (en) Repair method of arsenic-contaminated soil due to electromotive strengthening penetrative reactive wall
CN203513300U (en) Preparation system of high-purity lithium carbonate
CN103940980A (en) Device and method for measuring content of organic carbon in soil
CN208032572U (en) A kind of manganese chloride solution exclusion device
CN203474481U (en) Slurry processing device applicable to titanium tetrachloride production process
CN208258332U (en) Rooter is used in a kind of greening of Multifunctional garden
CN108640111B (en) Preparation method of graphite oxide capable of being washed by water directly
CN204917979U (en) Industrialization preparation oxidation graphene powder's equipment
CN109279589A (en) A kind of activated carbon of phosphoric acid method workshop high efficiente callback phosphoric acid plant
CN205832826U (en) The rotary Despumation device of silk screen
CN108854249A (en) A kind of sewage treatment equipment for separating liquid from solid
CN210163164U (en) Industrial wastewater concentration solidification water treatment equipment
CN204370553U (en) A kind of rainwater flow-discarding device
CN209205183U (en) A kind of photovoltaic silicon wafer surface treatment feed flow stirring system
CN208907138U (en) A kind of noble metal reclaimer
CN205420011U (en) Tombarthite effluent treatment plant
CN206746300U (en) A kind of absorption tower with selective serum recycle system
CN205313422U (en) Water -soluble fertile production system of macroelement
CN208562490U (en) A kind of rare-earth precipitation extraction element
CN110697669A (en) Method for increasing concentration of wet-process phosphoric acid and coproducing hemihydrate gypsum

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
GR01 Patent grant
GR01 Patent grant