CN104237046A - Method for rapidly measuring content of grease in chemical fertilizer - Google Patents
Method for rapidly measuring content of grease in chemical fertilizer Download PDFInfo
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- CN104237046A CN104237046A CN201410411356.4A CN201410411356A CN104237046A CN 104237046 A CN104237046 A CN 104237046A CN 201410411356 A CN201410411356 A CN 201410411356A CN 104237046 A CN104237046 A CN 104237046A
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- Prior art keywords
- chemical fertilizer
- filter paper
- grease
- fat content
- water
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Abstract
The invention relates to a method for rapidly measuring the content of grease in chemical fertilizer. The method comprises the following steps: respectively weighing m g of a chemical fertilizer test sample which is coated by grease and m g of a chemical fertilizer test sample which is not coated by grease, respectively placing the chemical fertilizer test sample with the grease and the chemical fertilizer test sample without the grease into 250mL beakers, respectively adding 100ml of deionized water at the temperature of 25 to 30 DEG C, stirring the chemical fertilizer and the deionized water until the chemical fertilizer is completely dissolved, respectively filtering the mixture by utilizing a piece of rapid-quantifying filter paper, and repeatedly washing the filter paper for multiple times by utilizing the water at the same temperature so as to enable the chemical fertilizer solution on the filter paper to completely enter the filter liquid through the filter paper; respectively placing the filter paper containing the grease and the filter paper of a blank experiment in drying boxes at the temperature of 105 DEG C+/-2 DEG C to be dried for 2h, and then cooling the filter paper to a constant weight in a dryer; weighing the mass m1 of the filter paper containing the grease and the mass m0 of the blank experimental filter paper, wherein the chemical fertilizer is water soluble chemical fertilizer; the grease content calculation formula: grease content %=100*(m1-m0)/m. By adopting the method, the measuring speed can be effectively increased, the measuring error can be reduced, and the measuring operation is simple.
Description
Technical field
The present invention relates to a kind of method of Quick Measurement chemical fertilizer fat content
Background technology
Chemical fertilizer needs to have good mobility, applies, the difficulty such as transport in order to prevent its caking from causing, and generally can carry out anti-caking process to it after the pelletizing.At present domestic to fertilizer carry out the general method of anti-caking process be use anticaking agent, the principal ingredient of anticaking agent is the grease being equipped with a small amount of surfactant.The degree of fertilizer caking can be controlled by measuring chemical fertilizer surface fat content, reaching the object controlling chemical fertilizer products quality.
Traditional main measurement method of grease:
In general animal and plant fat, fat content is the highest, usually adopts measurement fat content to characterize fat content.Domestic is at present soxhlet extraction for measuring the most representative method of lipid, has another name called continuous extraction.Soxhlet extraction methods, is a kind of method of extract compounds from solid matter, utilizes solvent refluxing and siphon principle, make the lipid on solid matter extract by solvent, thus measure the content of lipid quantitatively.
Concrete grammar is:
1, cut into slices
Filter paper is cut into 8cm × 8cm, builds up the paper bag of open-ended, move into dry 2h in 105 ± 2 DEG C of baking ovens, take out and put into exsiccator, be cooled to room temperature.
2, packaging and drying
In above-mentioned filter paper packet of having weighed, load the sample of about 3g through porphyrize, seal bag mouth, put into the dry 3h of baking oven of 105 ± 2 DEG C, move in exsiccator and be cooled to room temperature.
3, extracting
Filter paper packet long forceps that sample is housed is put into extracting barrel, injects the absolute ether of 1.67 times of primary rainbow pipette, sample bag is immersed in ether completely.Connect extractor each several part, connect condensate water current, in water bath with thermostatic control, carry out extracting, regulate water temperature between 70 ~ 80 DEG C, make the ether of lower of condensation become beaded, extracting is to the ether filter paper drop extracted in cylinder checks oil stains-less (about needing 6 ~ 12h).After extracting, take out filter paper packet with long forceps, make in ventilation ether volatilize (extracting room temperature is advisable with 12 ~ 25 DEG C).
4, weigh
After treating ether volatilization, filter paper packet is placed in 105 ± 2 DEG C of dry 2h of baking oven, puts into till exsiccator is cooled to constant weight.
5, result and calculating
Crude fat content (%)=(b-c)/(b-a) × 100
In formula: a: measuring cup adds filter paper packet heavy (g)
B: measuring cup adds filter paper packet and dries sample heavy (g)
C: measuring cup adds filter paper packet and extracting post-drying residue heavy (g)
Need before sample extraction in traditional measurement method, first by thin for solid matter grinding, to soak molten area to increase liquid; Need to select organic solvent to add the processes such as hot reflux and syphonic effect to make in filter paper Sample extraction completely to the grease in sample, there is the possibility producing error in each link, cause measuring error, the accuracy of directly impact measurement, the whole measuring process time reaches 6-12 hour simultaneously.
Summary of the invention
Object of the present invention, in order to improve accuracy of measurement, simplifies the operation course, and reduces Measuring Time, provides a kind of method of Quick Measurement chemical fertilizer fat content.
The present invention is achieved in the following ways:
A kind of method of fat content in Quick Measurement chemical fertilizer, it is characterized in that carrying out according to the following steps: take the chemical fertilizer sample of parcel grease respectively and do not wrap up each m gram of chemical fertilizer sample of grease, be placed in 250mL beaker respectively, add the deionized water 100ml of 25 ~ 30 DEG C respectively, be stirred to chemical fertilizer to dissolve completely, use the Filter paper filtering of fast quantification respectively, and with the repeated multiple times flushing of the water of identical temperature, make the fertilizer solution on filter paper enter in filtrate by filter paper completely; After flushing, respectively the filter paper of the filter paper containing grease and blank assay is placed in 105 DEG C ± 2 DEG C dry 2h of baking oven, then puts into exsiccator and be cooled to constant weight; Weigh and be respectively m containing the filter paper of grease and the quality of blank assay filter paper
1, m
0, described chemical fertilizer is water-soluble chemical fertilizer;
Fat content calculating formula: fat content %=100 × (m
1-m
0)/m.
Described water-soluble chemical fertilizer is ammonium nitrate or ammonium chloride.
Method of the present invention, in measuring process, by completely soluble in water for the chemical fertilizer of parcel grease, through Filter paper filtering, is separated chemical fertilizer with grease.The present invention is than existing analytical approach, and have following advantage: 1, measuring error is little, accuracy is high.2, measuring speed is fast.3, measure simple to operate.
Embodiment
The present invention will be described in detail in conjunction with the embodiments:
A kind of method of fat content in Quick Measurement chemical fertilizer, the accurate fat content % of according to the form below label taking respectively wraps up the chemical fertilizer sample of grease, take the chemical fertilizer sample of parcel grease respectively and do not wrap up each 25g of chemical fertilizer sample (accurately to 0.0002g) of grease, be placed in 250mL beaker respectively, add the deionized water 100ml of 25 ~ 30 DEG C respectively, be stirred to chemical fertilizer to dissolve completely, filter with fast grade filter paper respectively, and with the repeated multiple times flushing of the water of identical temperature, the fertilizer solution on filter paper is entered in filtrate completely by filter paper.After flushing, respectively the filter paper of the filter paper containing grease and blank assay is placed in 105 DEG C ± 2 DEG C dry 2h of baking oven, then puts into exsiccator and be cooled to constant weight.The filter paper quality weighed containing grease is 1.639 grams, and the quality weighing blank assay filter paper is 1.526 grams;
Fat content calculating formula is as follows: fat content %=100 × (1.639-1.526)/25=0.452.
In order to verify the accuracy of two kinds of methods, now take the chemical fertilizer standard model of three kinds of different fat contents, carry out the contrast test of two kinds of methods, result is as follows:
Can obviously find out from analytical table: the value taking soxhlet extraction methods to measure is larger with standard model dispersion degree, the recovery is at 80-112%, and the poor repeatability of the measurement of sample, and interpret sample measuring error is obvious; The inventive method sample measurement recovery is in the fluctuation of 91-102% scope, and sample repeatability is better, illustrates that measurement data accuracy is high.
Claims (2)
1. the method for fat content in a Quick Measurement chemical fertilizer, it is characterized in that carrying out according to the following steps: take the chemical fertilizer sample of parcel grease respectively and do not wrap up each m gram of chemical fertilizer sample of grease, be placed in 250mL beaker respectively, add the deionized water 100ml of 25 ~ 30 DEG C respectively, be stirred to chemical fertilizer to dissolve completely, use the Filter paper filtering of fast quantification respectively, and with the repeated multiple times flushing of the water of identical temperature, make the fertilizer solution on filter paper enter in filtrate by filter paper completely; After flushing, respectively the filter paper of the filter paper containing grease and blank assay is placed in 105 DEG C ± 2 DEG C dry 2h of baking oven, then puts into exsiccator and be cooled to constant weight; Weigh and be respectively m1, m0 containing the filter paper of grease and the quality of blank assay filter paper; Described chemical fertilizer is water-soluble chemical fertilizer;
Fat content calculating formula: fat content %=100 × (m1-m0)/m.
2. the method for fat content in a kind of Quick Measurement chemical fertilizer as claimed in claim 1, is characterized in that described water-soluble chemical fertilizer is ammonium nitrate or ammonium chloride.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410411356.4A CN104237046A (en) | 2014-08-20 | 2014-08-20 | Method for rapidly measuring content of grease in chemical fertilizer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410411356.4A CN104237046A (en) | 2014-08-20 | 2014-08-20 | Method for rapidly measuring content of grease in chemical fertilizer |
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| CN104237046A true CN104237046A (en) | 2014-12-24 |
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| CN201410411356.4A Pending CN104237046A (en) | 2014-08-20 | 2014-08-20 | Method for rapidly measuring content of grease in chemical fertilizer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106092811A (en) * | 2016-05-27 | 2016-11-09 | 合肥学院 | A kind of detection method of preserved egg yellow oil yield |
| CN109708989A (en) * | 2018-12-28 | 2019-05-03 | 扬州大学 | A kind of device and its application method for the measurement of Oil in circulating gas, water and particle content |
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| JP2010223928A (en) * | 2009-03-23 | 2010-10-07 | Fukuhara Co Ltd | Method and instrument for measuring concentration of oil in compressed air |
| CN101893554A (en) * | 2010-07-01 | 2010-11-24 | 湖北富邦化工科技有限公司 | Method for quickly analyzing porous ammonium nitrate anticaking agent |
| CN101975715A (en) * | 2010-10-22 | 2011-02-16 | 彩虹集团电子股份有限公司 | Method for detecting carbon content of lithium iron phosphate |
| CN102759490A (en) * | 2012-07-22 | 2012-10-31 | 天脊煤化工集团股份有限公司 | Measuring method for encapsulating agent in porous granular ammonium nitrate |
| CN102879293A (en) * | 2012-09-28 | 2013-01-16 | 甘肃交通规划勘察设计院有限责任公司 | Method for determining dosage of modifiers in SBS (styrene-butadiene-styrene) modified asphalt by solvent separation process |
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| CN101299014A (en) * | 2007-11-09 | 2008-11-05 | 中国航天科技集团公司第六研究院第一六五研究所 | Method for measuring mechanical impurities content in coal oil |
| JP2010223928A (en) * | 2009-03-23 | 2010-10-07 | Fukuhara Co Ltd | Method and instrument for measuring concentration of oil in compressed air |
| CN101893554A (en) * | 2010-07-01 | 2010-11-24 | 湖北富邦化工科技有限公司 | Method for quickly analyzing porous ammonium nitrate anticaking agent |
| CN101975715A (en) * | 2010-10-22 | 2011-02-16 | 彩虹集团电子股份有限公司 | Method for detecting carbon content of lithium iron phosphate |
| CN102759490A (en) * | 2012-07-22 | 2012-10-31 | 天脊煤化工集团股份有限公司 | Measuring method for encapsulating agent in porous granular ammonium nitrate |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106092811A (en) * | 2016-05-27 | 2016-11-09 | 合肥学院 | A kind of detection method of preserved egg yellow oil yield |
| CN109708989A (en) * | 2018-12-28 | 2019-05-03 | 扬州大学 | A kind of device and its application method for the measurement of Oil in circulating gas, water and particle content |
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Application publication date: 20141224 |
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