CN101915723A - Method and device for measuring total organic carbon in waterbody - Google Patents
Method and device for measuring total organic carbon in waterbody Download PDFInfo
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- CN101915723A CN101915723A CN 201010237328 CN201010237328A CN101915723A CN 101915723 A CN101915723 A CN 101915723A CN 201010237328 CN201010237328 CN 201010237328 CN 201010237328 A CN201010237328 A CN 201010237328A CN 101915723 A CN101915723 A CN 101915723A
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Abstract
The invention provides a method and a device for measuring total organic carbon in waterbody. The method for measuring the total organic carbon in waterbody comprises the following steps of: detecting the waterbody in an experiment pool to obtain voltage signals corresponding to the organic carbon in the waterbody; performing integration processing on the voltage signals to obtain area values corresponding to the voltage signals; and calculating the concentration of the total organic carbon in the waterbody according to the area values and the preset concentration formula, wherein the preset concentration formula is the linear relation formula between the concentration and the area values. The concentration of the total organic carbon in the waterbody can be accurately and reliably obtained by detecting the waterbody in the experiment pool to obtain the voltage signals corresponding to the organic carbon in the waterbody at different moments, then performing integration processing on the voltage signals to obtain the area values corresponding to the voltage signals and finally substituting the area value in the concentration formula. The invention improves the reliability of the method for measuring the total organic carbon in the waterbody as the detected voltage signals need not to be supposed to be stable or time-invariant.
Description
Technical field
The present invention relates to field of measuring technique, relate in particular to a kind of measuring method and device of total organic carbon in waterbody.
Background technology
At present, total organic carbon (Total OrganicCarbon in the water body (for example: ocean, lake or rivers), be designated hereinafter simply as: the overall target that TOC) is organic pollutants in water body, it is one of most important project of marine environmental monitoring, because TOC is an overall target of representing organic substance total amount in the water body with the content of carbon, so TOC more can directly reasonably represent in the water body by the degree of organic pollutants.In the prior art, the measuring technique of TOC is normally carried out on the platform of laboratory in the water body, is specially: the signal of the TOC correspondence of supposition in the water body be steadily or the time constant, then, according to the content of TOC in the detected calculated signals water body.
As from the foregoing, because the structure and the concentration of water body organism are influenced greatly by space-time, majority is in interrelated, interactional state, and in the prior art signal of the TOC correspondence in the measuring method of the TOC supposition water body be stably or the time constant, the result's of measurement accuracy and representativeness will be under suspicion.Therefore, the reliability of the measuring method of TOC is relatively poor in the prior art.
Summary of the invention
The invention provides a kind of measuring method and device of total organic carbon in waterbody,, realize the reliability of the measuring method of raising total organic carbon in waterbody in order to solve the relatively poor defective of measuring method reliability of total organic carbon in waterbody in the prior art.
The invention provides a kind of measuring method of total organic carbon in waterbody, comprising:
Water body in the experiment pool is detected, to obtain the voltage signal of the organic carbon correspondence in the described water body;
Described voltage signal is carried out Integral Processing, to obtain the area value of described voltage signal correspondence;
According to described area value and default concentration formula, calculate the concentration of the total organic carbon in the described water body, wherein, described default concentration formula is the linear relationship formula between described concentration and the described area value.
The present invention also provides a kind of measurement mechanism of total organic carbon in waterbody, comprising:
Detection module is used for the water body of experiment pool is detected, to obtain the voltage signal of the organic carbon correspondence in the described water body;
The Integral Processing module is used for described voltage signal is carried out Integral Processing, to obtain the area value of described voltage signal correspondence;
Computing module is used for calculating the concentration of the total organic carbon in the described water body according to described area value and default concentration formula, and wherein, described default concentration formula is the linear relationship formula between described concentration and the described area value.
The measuring method of total organic carbon in waterbody provided by the invention and device are by to detecting in the water body in the experiment pool, to obtain the voltage signal of the organic carbon correspondence in the different water bodys constantly; Then, voltage signal is carried out integration to obtain the area value of voltage signal correspondence; At last, area value is brought into the concentration that the concentration formula just can obtain total organic carbon in waterbody accurately and reliably.Because detected voltage signal need not to be assumed to stably or the time is constant, thereby can detect the concentration of total organic carbon in waterbody in real time accurately, improve the reliability of the measuring method of total organic carbon in waterbody.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do one to the accompanying drawing of required use in embodiment or the description of the Prior Art below introduces simply, apparently, accompanying drawing in describing below is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the process flow diagram of the measuring method embodiment one of total organic carbon in waterbody of the present invention;
Fig. 2 is the process flow diagram of the measuring method embodiment two of total organic carbon in waterbody of the present invention;
Fig. 3 is the process flow diagram of step 1 among the measuring method embodiment two of total organic carbon in waterbody of the present invention;
Fig. 4 is the process flow diagram of step 3 among the measuring method embodiment two of total organic carbon in waterbody of the present invention;
Fig. 5 is the measurement mechanism example structure synoptic diagram of total organic carbon in waterbody of the present invention.
Embodiment
For the purpose, technical scheme and the advantage that make the embodiment of the invention clearer, below in conjunction with the accompanying drawing in the embodiment of the invention, technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
Fig. 1 is the process flow diagram of the measuring method embodiment one of total organic carbon in waterbody of the present invention.As shown in Figure 1, the measuring method of present embodiment total organic carbon in waterbody comprises:
The measuring method of present embodiment total organic carbon in waterbody is by to detecting in the water body in the experiment pool, to obtain the voltage signal of the organic carbon correspondence in the different water bodys constantly; Then, voltage signal is carried out integration to obtain the area value of voltage signal correspondence; At last, area value is brought into the concentration that the concentration formula just can obtain total organic carbon in waterbody accurately and reliably.Because detected voltage signal need not to be assumed to stably or the time is constant, thereby can detect the concentration of total organic carbon in waterbody in real time accurately, improve the reliability of the measuring method of present embodiment total organic carbon in waterbody.
Fig. 2 is the process flow diagram of the measuring method embodiment two of total organic carbon in waterbody of the present invention.As shown in Figure 2, the measuring method of present embodiment total organic carbon in waterbody based on the measuring method embodiment one of above-mentioned total organic carbon in waterbody, includes step 1-step 3, and its difference is: also comprised before step 1:
Step 1 ', in experiment pool, inject ozone, so that the organic carbon in ozone and water body reaction is luminous.Concrete, the pairing voltage signal of organic carbon in the acquisition water body for convenience, step 1 in the present embodiment ' ozone is injected in the water body in the experiment pool, ozone will react with organic carbon and luminous, and the big more light intensity of the concentration of total organic carbon in waterbody is just strong more.
Further, carry out Integral Processing, before the area value that obtains the voltage signal correspondence, also comprise at step 2 pair voltage signal:
Step 2 ', voltage signal is removed the processing of making an uproar.Concrete, because in the water body to experiment pool detects with the process that obtains voltage signal, the process of detecting can be subjected to extraneous influence of various factors, thereby need remove the processing of making an uproar to detected voltage signal, for example, can handle voltage signal by one-dimensional wavelet transform, effectively voltage signal is removed the processing of making an uproar.
The measuring method of present embodiment total organic carbon in waterbody, by ozone being injected in the water body so that ozone and organic carbon reaction are luminous, light intensity by sending in the test experience pond easily, and be voltage signal, thereby can obtain the voltage signal of organic carbon correspondence in the water body easily with phototransformation.In addition, by the voltage signal that obtains is removed the processing of making an uproar, can effectively weaken extraneous factor to the influence that detected voltage signal causes, make voltage signal more accurate, more help improving the reliability of the measuring method of present embodiment total organic carbon in waterbody.
Based on technique scheme, optionally, as shown in Figure 3, the step 1 in the present embodiment comprises following concrete steps:
And the step 2 in the present embodiment is specially: first voltage signal and second voltage signal are carried out Integral Processing.Concrete, the area value that obtains in the step 2 comprises two parts, i.e. the area value sum of the area value of the first voltage signal correspondence and the second voltage signal correspondence.
The measuring method of present embodiment total organic carbon in waterbody, by after obtaining voltage signal in judgement and being in steady state (SS), detect the voltage signal of the organic carbon correspondence in the water body in the different time sections again, can obtain the area value of voltage signal correspondence more accurately and effectively, thereby can obtain the concentration of total organic carbon in waterbody more accurately, more help improving the reliability of the measuring method of present embodiment total organic carbon in waterbody.
Based on technique scheme, optionally, present embodiment step 1 is specially: according to default sample frequency the water body in the experiment pool is detected, wherein, sample frequency is the relative standard deviation frequency values hour of continuous a plurality of voltage signals.
Particularly, in the process that the water body in the experiment pool is detected, can detect according to default sample frequency, wherein, this employing frequency is a pairing frequency values when the numerical value of the relative standard deviation of detected voltage signal is minimum value.By adopting default sample frequency that the voltage signal of the organism correspondence in the experiment pool is detected, can obtain the voltage signal of organic carbon correspondence more accurately; And, can more accurately be easy to calculate the area value of voltage signal correspondence owing to adopt default sample frequency to detect.
Further, the measuring method of present embodiment total organic carbon in waterbody both can the continuous detection experiment pool in the concentration of total organic carbon, can also adopt the concentration of total organic carbon in the discontinuous mode test experience pond.When adopting discontinuous mode, step 1 will detect the water body in the experiment pool according to default sample frequency, concrete, above-mentioned steps 12 and step 13 can adopt following method to obtain: according to default sample frequency the water body in the experiment pool is carried out the interval and detect, to obtain a plurality of voltage signals, wherein, the number of voltage signal is the default number of times that detects.Concrete, the interval detection can be configured in advance and number of times will be detected, detect the voltage signal of correspondence in the different time sections then at interval according to default sample frequency.Step 2 in the present embodiment is specially: each voltage signal is carried out Integral Processing, to obtain the area value of each voltage signal correspondence.Concrete, the voltage signal in each time period is carried out Integral Processing, thereby can obtain each voltage signal corresponding area value in the time period at place separately.
Further again, the step 3 in the present embodiment can be specially:
Maximum area value and minimum area value in step 31, the removal area value;
Further, default concentration formula in the present embodiment can adopt the formula that configures in advance, also can carry out the scene and set in the process of primary detection voltage signal.Particularly, in order to set default concentration formula in advance, the measuring method of present embodiment total organic carbon in waterbody also comprised before step 33:
Step 33 ', set default concentration formula, be specially:, obtain default concentration value and the linear relationship between the average area value, with the concentration formula that obtains presetting according to average area value and default concentration value.Concrete, can be complementary with default concentration value by calculating the average area value that obtains, make the average area value corresponding one by one, thereby can obtain the concentration value preset and the linear relationship between the average area value easily with the concentration value of presetting.For example: can detect the average area value twice, twice average area value will be distinguished corresponding different default concentration values, then, according to two groups of average area values and default concentration value, calculate default concentration formula.
The measuring method of present embodiment total organic carbon in waterbody detects the water body in the experiment pool by adopting default sample frequency, can obtain the voltage signal of organic carbon correspondence more accurately; And, can more accurately be easy to calculate the area value of voltage signal correspondence owing to adopt default sample frequency to detect.By setting default concentration formula, can set the concentration formula easily according to actual needs, thereby make the concentration value of the total organic carbon that calculates more accurate, more help improving the reliability of the measuring method of present embodiment total organic carbon in waterbody.
One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can be finished by the relevant hardware of programmed instruction, aforesaid program can be stored in the computer read/write memory medium, this program is carried out the step that comprises said method embodiment when carrying out; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CD.
Fig. 5 is the measurement mechanism example structure synoptic diagram of total organic carbon in waterbody of the present invention.As shown in Figure 5, the measurement mechanism of present embodiment total organic carbon in waterbody comprises: detection module 10, Integral Processing module 20 and computing module 30.
Particularly, the detection module 10 in the present embodiment, Integral Processing module 20 and the computing module 30 concrete courses of work can not repeat them here referring to the record of the measuring method embodiment of total organic carbon in waterbody of the present invention.
The measurement mechanism of present embodiment total organic carbon in waterbody is by to detecting in the water body in the experiment pool, to obtain the voltage signal of the organic carbon correspondence in the different water bodys constantly; Then, voltage signal is carried out integration to obtain the area value of voltage signal correspondence; At last, area value is brought into the concentration that the concentration formula just can obtain total organic carbon in waterbody accurately and reliably.Because detected voltage signal need not to be assumed to stably or the time is constant, thereby can detect the concentration of total organic carbon in waterbody in real time accurately, improve the reliability of the measuring method of present embodiment total organic carbon in waterbody.
It should be noted that at last: above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (10)
1. the measuring method of a total organic carbon in waterbody is characterized in that, comprising:
Water body in the experiment pool is detected, to obtain the voltage signal of the organic carbon correspondence in the described water body;
Described voltage signal is carried out Integral Processing, to obtain the area value of described voltage signal correspondence;
According to described area value and default concentration formula, calculate the concentration of the total organic carbon in the described water body, wherein, described default concentration formula is the linear relationship formula between described concentration and the described area value.
2. the measuring method of total organic carbon in waterbody according to claim 1 is characterized in that, described water body in the experiment pool is detected before, also comprise:
In described experiment pool, inject ozone, so that the reaction of the organic carbon in described ozone and the described water body is luminous;
Described water body in the experiment pool is detected, be specially: the light that the water body in the described experiment pool is sent detects, and described light is converted to described voltage signal.
3. the measuring method of total organic carbon in waterbody according to claim 2, it is characterized in that, described described voltage signal is carried out Integral Processing, before the area value that obtains described voltage signal correspondence, also comprise: described voltage signal is removed the processing of making an uproar.
4. according to the measuring method of the arbitrary described total organic carbon in waterbody of claim 1-3, it is characterized in that described water body in the experiment pool is detected is specially:
Judge whether described voltage signal is stable;
If described voltage signal is in steady state (SS), in described experiment pool, do not continuing under the situation of injection water body, detect first voltage signal of the organic carbon correspondence in the described water body, until the ratio of described first voltage signal and the mean value of the voltage signal that is in steady state (SS) less than pre-set threshold value;
After the ratio of the magnitude of voltage of described first voltage signal and the mean value of the voltage signal that is in steady state (SS) is less than pre-set threshold value, in described experiment pool, continuing to inject under the situation of water body, detect second voltage signal of the organic carbon correspondence in the described water body, mxm. appears until detecting described second voltage signal, the size of the magnitude of voltage of obtained previous moment when wherein, described mxm. is detected described second voltage signal magnitude of voltage that occurs previous moment for the first time greater than constantly magnitude of voltage of back one;
Described described voltage signal is carried out Integral Processing, be specially: described first voltage signal and described second voltage signal are carried out Integral Processing.
5. the measuring method of total organic carbon in waterbody according to claim 4 is characterized in that, describedly judges that described voltage signal is whether stable and is specially:
Calculate the relative standard deviation of continuous a plurality of described voltage signals;
If described relative standard deviation, determines then that described voltage signal is in steady state (SS) less than default standard deviation.
6. according to the measuring method of the arbitrary described total organic carbon in waterbody of claim 1-3, it is characterized in that, described water body in the experiment pool detected, be specially:
According to default sample frequency the water body in the described experiment pool is detected, wherein, described sample frequency is the relative standard deviation frequency values hour of continuous a plurality of described voltage signals.
7. the measuring method of total organic carbon in waterbody according to claim 6 is characterized in that, the default sample frequency of described basis detects the water body in the described experiment pool, is specially:
According to default sample frequency the water body in the described experiment pool is carried out the interval and detect, to obtain a plurality of described voltage signals, wherein, the number of described voltage signal is the default number of times that detects;
Described voltage signal is carried out Integral Processing, be specially: each described voltage signal is carried out Integral Processing, to obtain the area value of each described voltage signal correspondence.
8. the measuring method of total organic carbon in waterbody according to claim 7 is characterized in that, and is described according to described area value and default concentration formula, calculates the concentration of the total organic carbon in the described water body, is specially:
Remove maximum area value and minimum area value in the described area value;
Remaining described area value is averaged, to obtain the average area value;
According to described average area value and default concentration formula, calculate the concentration of the total organic carbon in the described water body.
9. the measuring method of total organic carbon in waterbody according to claim 8, it is characterized in that, described according to described average area value and default concentration formula before, also comprise: set default concentration formula, be specially: according to described average area value and default concentration value, obtain described default concentration value and the linear relationship between the described average area value, with the concentration formula that obtains presetting.
10. the measurement mechanism of a total organic carbon in waterbody is characterized in that, comprising:
Detection module is used for the water body of experiment pool is detected, to obtain the voltage signal of the organic carbon correspondence in the described water body;
The Integral Processing module is used for described voltage signal is carried out Integral Processing, to obtain the area value of described voltage signal correspondence;
Computing module is used for calculating the concentration of the total organic carbon in the described water body according to described area value and default concentration formula, and wherein, described default concentration formula is the linear relationship formula between described concentration and the described area value.
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Cited By (1)
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| CN102288643A (en) * | 2011-08-01 | 2011-12-21 | 山东省科学院海洋仪器仪表研究所 | Method and device for measuring organic matter of soil |
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