CN106018160A - Method for measuring content of water-soluble and acid-soluble sulfate in soil - Google Patents
Method for measuring content of water-soluble and acid-soluble sulfate in soil Download PDFInfo
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- CN106018160A CN106018160A CN201610468207.0A CN201610468207A CN106018160A CN 106018160 A CN106018160 A CN 106018160A CN 201610468207 A CN201610468207 A CN 201610468207A CN 106018160 A CN106018160 A CN 106018160A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N5/00—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid
- G01N5/04—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by removing a component, e.g. by evaporation, and weighing the remainder
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- 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
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- 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
- G01N1/34—Purifying; Cleaning
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- 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
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- Engineering & Computer Science (AREA)
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- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention relates to a method for measuring the content of water-soluble and acid-soluble sulfate in soil. Sulfate in the soil is extracted with deionized water or diluted hydrochloric acid, an extracting solution is filtered with low-speed quantitative filter paper and then mixed with a barium chloride solution, and sulfate ions in the extracting solution are converted into barium sulfate precipitates. The precipitates are filtered and dried to reach constant weight, and the content of the water-soluble and acid-soluble sulfate in the soil can be calculated according to the mass of the barium sulfate precipitates. Compared with the prior art, the method is stable and realizes accurate measurement, and experiment parameter data can be obtained accurately.
Description
Technical field
The present invention relates to assay method, a kind of soil water dissolubility and the mensuration of acid-soluble sulfate.
Background technology
The distribution of China's saline-alkali soil is wide, and area is big, and type is many.Containing a large amount of water solublity, acid-soluble salt in solonchak, affect crop
Growth, the degree of the different salinity damages to crops of same concentration is the most different.In salinity, the harm with sodium carbonate is maximum, increases soil
Earth basicity and deterioration soil physical properties, make crop damage.Soil water dissolubility, acid-soluble sulfate be one of saline-alkali soil important
Attribute, is the barrier factors limiting plant growth.
Therefore, understanding water salt dynamic and measure water solublity, acid-soluble sulfate, the protection to crop plays an important role.In the past,
The mensuration of soil water dissolubility and acid-soluble sulfate is extracted sample impurity and too much and is calculated its content with simple chemical reaction,
Do not account in course of reaction because temperature, equipment other factors of uneven congruence affect the stable case of chemical reaction product.
A kind of stable, accurate assay method.
Summary of the invention
The present invention is to solve the problems referred to above in the presence of prior art, it is provided that a kind of safe and easy to operate soil
Earth water solublity and the assay method of acid-soluble sulfate, accurate mensuration soil water dissolubility and the content of acid-soluble sulfate, energy
Enough meet practical operation requirement.
The soil water dissolubility of the present invention and the assay method of acid-soluble sulfate, step 1, pipette 10～200ml respectively and fit
Amount test portion is in 500ml beaker, and in test tube, sulfate ion content is not to be exceeded 50mg, the exact volume of record test portion, uses water
It is diluted to 200ml, adds 2～drip methyl orange solution, being neutralized to PH5～8 with hydrochloric acid solution or sodium hydroxide solution, add
2.0ml hydrochloric acid solution, boils at least 5 minutes, then performs step 2 as boiled the clarification of rear solution, as there is insoluble matter, with fixed at a slow speed
Amount filter paper filtered while hot mixture also reduces hot water injection's filter paper, merging filtrate and washing liquid in 500ml beaker, is further continued for step
2；Step 2, is slowly added to the 5～15ml sodium chloride solutions of about 80 DEG C in the above-mentioned solution boiled, reheats this molten with suction pipe
Liquid at least 1h, is positioned over precipitates overnight step 3 in 50 ± 10 DEG C of calorstats after cooling, the glass core funnel of constant weight is contained in sucking filtration
On bottle, carefully it is filtered by suction precipitation, stirs the precipitation in cup with the glass stirring rod of ferrule, with deionized water repeatedly simultaneously
Beaker is washed in flushing, all washing liquids is incorporated in glass sand core funnel, rinses the precipitate of sand core funnel to without chloride ion；Step 4,
Take off glass sand core funnel, dry constant weight, the weight of record final glass sand core funnel；Step 5, pipettes in test portion volume identical
Blank test portion, according to step 1～4, measure the content of sulfate in blank test portion, after calculating sucking filtration, be dried the glass sand of constant weight
Core funnel quality difference before sucking filtration.
Described methyl orange solution: ρ=1 g/L.
Described hydrochloric acid solution: c(HCl)=6 mol/L.
Described sodium hydroxide solution: c(NaOH)=5mol/L.
Described sodium chloride solution: ρ (NaCl)=100 g/L.
Compared with prior art, the present invention has that method is stable, measure accurately to the present invention, it is possible to accurate obtain reality
Test supplemental characteristic.
Detailed description of the invention
Step 1, pipettes 10～200ml appropriate test portions respectively in 500ml beaker, and in test tube, sulfate ion content should
More than 50mg.The exact volume of record test portion, is diluted with water to 200ml.Add 2～drip the methyl orange solution of ρ=1 g/L, using c
(HCl) hydrochloric acid solution of=6 mol/L or c(NaOH) sodium hydroxide solution of=5mol/L is neutralized to PH5～8, adds 2.0ml
Hydrochloric acid solution, boils at least 5 minutes.Step 2 is then performed, as insoluble matter occurs, with the most quantitatively filtering as boiled the clarification of rear solution
Paper filtered while hot mixture also reduces hot water injection's filter paper, merging filtrate and washing liquid in 500ml beaker, is further continued for step 2；
Step 2, is slowly added to the chlorine of 5～15ml ρ (NaCl)=100 g/L of about 80 DEG C in the above-mentioned solution boiled with suction pipe
Change sodium solution, reheat this solution at least 1h, after cooling, be positioned over precipitates overnight in 50 ± 10 DEG C of calorstats.
Step 3, is contained in the glass core funnel of constant weight on bottle,suction, is carefully filtered by suction precipitation, uses ferrule simultaneously
Glass stirring rod stir the precipitation in cup, repeatedly rinse with deionized water and wash beaker, all washing liquids are incorporated to glass core leakage
In bucket, rinse the precipitate of sand core funnel to without chloride ion；
Step 4, takes off glass sand core funnel, dries constant weight, the weight of record final glass sand core funnel；
Step 5, pipettes in the identical blank test portion of test portion volume, according to step 1～4, measures containing of sulfate in blank test portion
Amount, the glass sand core funnel of dry constant weight quality difference before sucking filtration after calculating sucking filtration.
Claims (5)
1. soil water dissolubility and a mensuration for acid-soluble sulfate, is characterized in that, including step 1, pipette respectively 10～
The appropriate test portion of 200ml is in 500ml beaker, and in test tube, sulfate ion content is not to be exceeded 50mg, the accurate body of record test portion
Long-pending, it is diluted with water to 200ml, adds 2～drip methyl orange solution, being neutralized to PH5～8 with hydrochloric acid solution or sodium hydroxide solution,
Add 2.0ml hydrochloric acid solution, boil at least 5 minutes, then perform step 2 as boiled the clarification of rear solution, as insoluble matter occurs, use
Quantitative filter paper filtered while hot mixture reduce hot water injection's filter paper, merging filtrate and washing liquid in 500ml beaker at a slow speed, followed by
Continuous step 2；Step 2, is slowly added to the 5～15ml sodium chloride solutions of about 80 DEG C in the above-mentioned solution boiled, then adds with suction pipe
Heat this solution at least 1h, is positioned over precipitates overnight in 50 ± 10 DEG C of calorstats after cooling；Step 3, by the glass core funnel of constant weight
Be contained on bottle,suction, be carefully filtered by suction precipitation, stir the precipitation in cup simultaneously with the glass stirring rod of ferrule, spend from
Sub-water repeatedly rinses and washes beaker, all washing liquids is incorporated in glass sand core funnel, rinse sand core funnel precipitate to without chlorine from
Son；Step 4, takes off glass sand core funnel, dries constant weight, the weight of record final glass sand core funnel；Step 5, pipettes in examination
The blank test portion that material volume is identical, according to step 1～4, measures the content of sulfate in blank test portion, is dried perseverance after calculating sucking filtration
The glass sand core funnel of weight quality difference before sucking filtration.
2. soil water dissolubility as claimed in claim 1 and the mensuration of acid-soluble sulfate, it is characterised in that: described methyl orange
Solution: ρ=1 g/L.
3. soil water dissolubility as claimed in claim 1 and the mensuration of acid-soluble sulfate, it is characterised in that: described hydrochloric acid is molten
Liquid: c(HCl)=6 mol/L.
4. soil water dissolubility as claimed in claim 1 and the mensuration of acid-soluble sulfate, it is characterised in that: described hydroxide
Sodium solution: c(NaOH)=5mol/L.
5. soil water dissolubility as claimed in claim 1 and the mensuration of acid-soluble sulfate, it is characterised in that: described sodium chloride
Solution: ρ (NaCl)=100 g/L.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610468207.0A CN106018160A (en) | 2016-06-24 | 2016-06-24 | Method for measuring content of water-soluble and acid-soluble sulfate in soil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610468207.0A CN106018160A (en) | 2016-06-24 | 2016-06-24 | Method for measuring content of water-soluble and acid-soluble sulfate in soil |
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| CN106018160A true CN106018160A (en) | 2016-10-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610468207.0A Pending CN106018160A (en) | 2016-06-24 | 2016-06-24 | Method for measuring content of water-soluble and acid-soluble sulfate in soil |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106840826A (en) * | 2017-03-02 | 2017-06-13 | 中国科学院新疆生态与地理研究所 | A kind of leach extraction method of soil water-soluble state lithium |
| CN107589036A (en) * | 2017-07-17 | 2018-01-16 | 贵州金洋检测工程有限公司 | Test methods of sulphur contents in a kind of water quality |
| CN109932275A (en) * | 2019-04-17 | 2019-06-25 | 成都虹波钼业有限责任公司 | The detection method of sulfate radical content in a kind of molybdenum base solution |
| CN110231247A (en) * | 2019-07-16 | 2019-09-13 | 内蒙古路易精普检测科技有限公司 | The measuring method of total sulfate in water and waste water |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102116725A (en) * | 2011-03-17 | 2011-07-06 | 湖北富邦科技股份有限公司 | Method for accurately analyzing content of tartrazine |
| CN102564890A (en) * | 2011-12-27 | 2012-07-11 | 浙江天蓝环保技术股份有限公司 | Method for detecting content of sulfur trioxide in gypsum |
| CN103308419A (en) * | 2013-06-27 | 2013-09-18 | 浙江天能电池(江苏)有限公司 | Method for testing content of barium sulfate for negative plate of storage battery |
-
2016
- 2016-06-24 CN CN201610468207.0A patent/CN106018160A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102116725A (en) * | 2011-03-17 | 2011-07-06 | 湖北富邦科技股份有限公司 | Method for accurately analyzing content of tartrazine |
| CN102564890A (en) * | 2011-12-27 | 2012-07-11 | 浙江天蓝环保技术股份有限公司 | Method for detecting content of sulfur trioxide in gypsum |
| CN103308419A (en) * | 2013-06-27 | 2013-09-18 | 浙江天能电池(江苏)有限公司 | Method for testing content of barium sulfate for negative plate of storage battery |
Non-Patent Citations (1)
| Title |
|---|
| 环境保护部: "《HJ635-2012：土壤水溶性和酸溶性硫酸盐的测定 重量法》", 29 February 2012 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106840826A (en) * | 2017-03-02 | 2017-06-13 | 中国科学院新疆生态与地理研究所 | A kind of leach extraction method of soil water-soluble state lithium |
| CN107589036A (en) * | 2017-07-17 | 2018-01-16 | 贵州金洋检测工程有限公司 | Test methods of sulphur contents in a kind of water quality |
| CN109932275A (en) * | 2019-04-17 | 2019-06-25 | 成都虹波钼业有限责任公司 | The detection method of sulfate radical content in a kind of molybdenum base solution |
| CN110231247A (en) * | 2019-07-16 | 2019-09-13 | 内蒙古路易精普检测科技有限公司 | The measuring method of total sulfate in water and waste water |
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Application publication date: 20161012 |