CN108444860A - A method of improving Suspended Particles in Water concentration mensuration accuracy - Google Patents
A method of improving Suspended Particles in Water concentration mensuration accuracy Download PDFInfo
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- CN108444860A CN108444860A CN201810127139.0A CN201810127139A CN108444860A CN 108444860 A CN108444860 A CN 108444860A CN 201810127139 A CN201810127139 A CN 201810127139A CN 108444860 A CN108444860 A CN 108444860A
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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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Abstract
The invention discloses a kind of methods improving Suspended Particles in Water concentration mensuration accuracy, include the following steps：0.45 μm of water system filter membrane is immersed first in the beaker for filling a certain amount of ultra-pure water, the filter membrane soaked through ultra-pure water is placed in measuring cup with anodontia flat mouth tweezers after a certain period of time, open bottle cap, it moves into take out to be placed in drier after 103~105 DEG C of drying 0.5h in baking oven and be cooled to room temperature, claim its weight；Then it dries repeatedly, is cooling, weighing, until constant weight；Secondly, the 100ml water samples containing suspended particulate substance are filtered using Suction filtration device；Again, the used 0.45 μm of water system filter membrane of Suction filtration device is placed in measuring cup, opens bottle cap, moved into dry to take out after 0.5h in 103~105 DEG C in baking oven and be placed in drier and be cooled to room temperature, claim its weight；Then it dries repeatedly, is cooling, weighing, until constant weight；Finally, suspended particulate matter concentration is calculated.Beneficial effects of the present invention：The present invention has convenient and efficient, easy to operate, the high feature of accuracy.
Description
Technical field
The present invention relates to technical field of environmental detection, it particularly relates to which a kind of raising Suspended Particles in Water concentration is surveyed
Determine the method for accuracy.
Background technology
Suspended Particles in Water is the important substance that river transports, since it has stronger adsorption capacity to pollutant, because
And it has great influence to the defeated transferization of pollution.Suspended Particles in Water number be influence Water quality it is important because
Element, numerous in the research of suspended particulate substance, all using the concentration of suspended particulate substance as an important finger of Water quality
Mark.Overlying water is mainly taken to cross 0.45 μm of water system filter membrane, root for Suspended Particles in Water method for measurement of concentration both at home and abroad at present
According to the dry weight variation before and after filter membrane use the concentration of particulate matter is acquired with the ratio between volume of water is filtered.However in practical operation
Usually occur the dry weight after filter membrane use in the process to be less than using experimental errors such as preceding dry weights, be measured for suspended particulate matter concentration
Accuracy brings tremendous influence.
Therefore, for existing Suspended Particles in Water method for measurement of concentration, error Producing reason is searched and to testing
Cheng Jinhang correlations are improved, to improve the accuracy of experiment.
Invention content
For above-mentioned technical problem in the related technology, the present invention proposes a kind of raising Suspended Particles in Water concentration mensuration
The method of accuracy can overcome the above-mentioned deficiency of the prior art.
To realize the above-mentioned technical purpose, the technical proposal of the invention is realized in this way：
A method of improving Suspended Particles in Water concentration mensuration accuracy comprising following steps：
S1：0.45 μm of water system filter membrane is immersed in the beaker for filling a certain amount of ultra-pure water, after a certain period of time with anodontia flat mouth tweezers
The filter membrane soaked through ultra-pure water is placed in measuring cup；
S2：Bottle cap is opened, moves into dry to take out after 0.5h in 103~105 DEG C in baking oven and is placed in drier and is cooled to room temperature, is claimed
Its weight；
S3：It dries repeatedly, is cooling, weighing, until constant weight；
S4：100ml water samples containing suspended particulate substance are filtered using Suction filtration device；
S5：The used 0.45 μm of water system filter membrane of Suction filtration device is placed in measuring cup, bottle cap is opened, is moved into baking oven in 103
It takes out to be placed in drier after~105 DEG C of drying 0.5h and be cooled to room temperature, claim its weight；
S6：It dries repeatedly, is cooling, weighing, until constant weight；
S7：Calculate suspended particulate matter concentration.
Further, in step sl, the certain time refers to 30min.
Further, in step s3, the constant weight refers to weighing difference weight twice to be no more than 0.5mg.
Further, in step s 6, the constant weight refers to weighing difference weight twice to be no more than 0.5mg.
Further, in the step s 7, the described calculating suspended particulate matter concentration the specific steps are：
S7.1：It is poor with the dry weight after use before to calculate filter membrane；
S7.2：Divided by the volume 100ml of water is suspended particulate matter concentration.
Beneficial effects of the present invention：The present invention first soaks 0.45 μm of water system filter membrane, then carries out drying operation, can have in this way
The reduction experimental error of effect improves the accurate of suspended particulate matter concentration measurement；The present invention has convenient and efficient simultaneously, operation letter
It is single, the high feature of accuracy.
Description of the drawings
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the present invention
Example, for those of ordinary skill in the art, without creative efforts, can also obtain according to these attached drawings
Obtain other attached drawings.
Fig. 1 is a kind of method of the raising Suspended Particles in Water concentration mensuration accuracy described according to embodiments of the present invention
Flow chart；
Fig. 2 is a kind of behaviour of the method for the raising Suspended Particles in Water concentration mensuration accuracy described according to embodiments of the present invention
Make schematic diagram；
In figure：
1,0.45 μm of water system filter membrane；2, ultra-pure water；3, beaker.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, the every other embodiment that those of ordinary skill in the art are obtained belong to what the present invention protected
Range.
As shown in Figs. 1-2, a kind of raising Suspended Particles in Water concentration mensuration according to embodiments of the present invention is accurate
The method of property comprising following steps：
S1：0.45 μm of water system filter membrane is immersed in the beaker for filling a certain amount of ultra-pure water, after a certain period of time with anodontia flat mouth tweezers
The filter membrane soaked through ultra-pure water is placed in measuring cup；
S2：Bottle cap is opened, moves into dry to take out after 0.5h in 103~105 DEG C in baking oven and is placed in drier and is cooled to room temperature, is claimed
Its weight；
S3：It dries repeatedly, is cooling, weighing, until constant weight；
S4：100ml water samples containing suspended particulate substance are filtered using Suction filtration device；
S5：The used 0.45 μm of water system filter membrane of Suction filtration device is placed in measuring cup, bottle cap is opened, is moved into baking oven in 103
It takes out to be placed in drier after~105 DEG C of drying 0.5h and be cooled to room temperature, claim its weight；
S6：It dries repeatedly, is cooling, weighing, until constant weight；
S7：Calculate suspended particulate matter concentration.
In one embodiment, in step sl, the certain time refers to 30min.
In one embodiment, in step s3, the constant weight refers to weighing difference weight twice to be no more than
0.5mg。
In one embodiment, in step s 6, the constant weight refers to weighing difference weight twice to be no more than
0.5mg。
In one embodiment, in the step s 7, the described calculating suspended particulate matter concentration the specific steps are：
S7.1：It is poor with the dry weight after use before to calculate filter membrane；
S7.2：Divided by the volume 100ml of water is suspended particulate matter concentration.
In order to facilitate understand the present invention above-mentioned technical proposal, below by way of in specifically used mode to the present invention it is above-mentioned
Technical solution is described in detail.
When specifically used, implementation process of the invention is：0.45 μm of immersion of water system filter membrane 1 is filled into a certain amount of ultra-pure water
In 2 beaker 3, the filter membrane soaked through ultra-pure water is placed in measuring cup with anodontia flat mouth tweezers after 30min, opens bottle cap, is moved
Enter to take out to be placed in drier after 103~105 DEG C of drying 0.5h in baking oven and be cooled to room temperature, claims its weight；It dries repeatedly, is cold
But it, weighs, until constant weight（Difference is weighed twice is no more than 0.5mg）；Then the 100ml water samples containing suspended particulate substance are utilized
Suction filtration device filters, and then the used 0.45 μm of water system filter membrane of Suction filtration device is placed in measuring cup, opens bottle cap, moves into and dries
It takes out to be placed in drier after 103~105 DEG C of drying 0.5h in case and be cooled to room temperature, claim its weight；Dry repeatedly, is cooling,
It weighs, until constant weight（Difference is weighed twice is no more than 0.5mg）；It is poor with the dry weight after use before to calculate filter membrane, and divided by
The volume 100ml of water is suspended particulate matter concentration.
In order to verify the practicability of the present invention, two known suspended particulate matter concentrations are chosen（1g/L）Water sample, use respectively
Improved experimental method is measured with unmodified experimental method；Original method is done about before the use of 0.45 μm of water system filter membrane
Weight assay method is that filter membrane is directly placed dry 30min or so in baking oven, is first utilized 0.45 μm of water system filter membrane after improvement super
Dry 30min in baking oven is placed into after pure water wetting, in this, as dry weight before the use of filter membrane.
Specific implementation process is as follows：
Choose known suspended particulate matter concentration（1g/L）Water sample tested, be divided to two groups of experiments of AB to carry out, every group set 6 it is flat
Row；The improved experimental method of A groups（The present invention）Measure its suspended particulate matter concentration, the unmodified determination of experimental method of B groups
Suspended particulate matter concentration；Two groups of samples carry out under identical experiment condition.The experimental results showed that：Using improved experiment side
The suspended particulate matter concentration that the A groups of method Suspended particulates finally measure is 1.016 ± 0.05 mg/L, and average value is
1.013 mg/L；Use the suspended particulate matter concentration that the B groups of unmodified determination of experimental method suspended particulate substance finally measure for
1.103 ± 0.12 mg/L, average value are 1.084 mg/L；As it can be seen that suspended particulate substance measurement can be improved using the present invention
Accuracy, and with the features such as convenient and efficient, easy to operate.
In conclusion the present invention first soaks 0.45 μm of water system filter membrane, then drying operation is carried out, can effectively reduced in this way
Experimental error improves the accurate of suspended particulate matter concentration measurement；The present invention has convenient and efficient, easy to operate, accuracy simultaneously
High feature.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
With within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention god.
Claims (5)
1. a kind of method improving Suspended Particles in Water concentration mensuration accuracy, which is characterized in that include the following steps：
S1：0.45 μm of water system filter membrane is immersed in the beaker for filling a certain amount of ultra-pure water, after a certain period of time with anodontia flat mouth tweezers
The filter membrane soaked through ultra-pure water is placed in measuring cup；
S2：Bottle cap is opened, moves into dry to take out after 0.5h in 103~105 DEG C in baking oven and is placed in drier and is cooled to room temperature, is claimed
Its weight；
S3：It dries repeatedly, is cooling, weighing, until constant weight；
S4：100ml water samples containing suspended particulate substance are filtered using Suction filtration device；
S5：The used 0.45 μm of water system filter membrane of Suction filtration device is placed in measuring cup, bottle cap is opened, is moved into baking oven in 103
It takes out to be placed in drier after~105 DEG C of drying 0.5h and be cooled to room temperature, claim its weight；
S6：It dries repeatedly, is cooling, weighing, until constant weight；
S7：Calculate suspended particulate matter concentration.
2. a kind of method improving Suspended Particles in Water concentration mensuration accuracy according to claim 1, feature exist
In in step sl, the certain time refers to 30min.
3. a kind of method improving Suspended Particles in Water concentration mensuration accuracy according to claim 1, feature exist
In in step s3, the constant weight refers to weighing difference weight twice to be no more than 0.5mg.
4. a kind of method improving Suspended Particles in Water concentration mensuration accuracy according to claim 1, feature exist
In in step s 6, the constant weight refers to weighing difference weight twice to be no more than 0.5mg.
5. a kind of method improving Suspended Particles in Water concentration mensuration accuracy according to claim 1, feature exist
In, in the step s 7, the described calculating suspended particulate matter concentration the specific steps are：
S7.1：It is poor with the dry weight after use before to calculate filter membrane；
S7.2：Divided by the volume 100ml of water is suspended particulate matter concentration.
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| CN201810127139.0A CN108444860A (en) | 2018-02-08 | 2018-02-08 | A method of improving Suspended Particles in Water concentration mensuration accuracy |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110927353A (en) * | 2019-12-11 | 2020-03-27 | 中国环境科学研究院 | Rural domestic sewage measurement system |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104034626A (en) * | 2014-06-26 | 2014-09-10 | 南通永康检测技术有限公司 | Detection method for content of suspended solids in wastewater |
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2018
- 2018-02-08 CN CN201810127139.0A patent/CN108444860A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104034626A (en) * | 2014-06-26 | 2014-09-10 | 南通永康检测技术有限公司 | Detection method for content of suspended solids in wastewater |
Non-Patent Citations (3)
| Title |
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| 文莉琳: "水质悬浮物测定中滤膜的预处理", 《资源节约与环保》 * |
| 林文伟 等: "水质悬浮物测定中出现负误差现象的探讨", 《中小企业管理与科技》 * |
| 赵俊凤 等: "废水悬浮物测定中负值现象的研究", 《石油与天然气化工》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110927353A (en) * | 2019-12-11 | 2020-03-27 | 中国环境科学研究院 | Rural domestic sewage measurement system |
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