CN107643375A - A kind of ocean water quality quasi-instrument sea trial method based on ocean fixed platform - Google Patents
A kind of ocean water quality quasi-instrument sea trial method based on ocean fixed platform Download PDFInfo
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Abstract
The invention discloses a kind of ocean water quality quasi-instrument sea trial method based on ocean fixed platform, including tested test instrument inspection；Tested instrument installation is with laying；Water sampling and analysis；Data processing；Data analysis step；Test method of the present invention can provide the sea trial step of detailed ocean water quality class measuring instrument；Using live water acquisition data as comparison data, the arguement that reference instrument uses is avoided, data are true and reliable；Give the data analysing method of long-time stability, reliability.The inventive method is to existing ocean professional standard HY/T 141 2011《Oceanographic instrumentation sea trial specification》Partial content improved, it is proposed that suitable for the sea trial step and data analysing method of the ocean such as pH, dissolved oxygen, turbidity of development stage water quality class measuring instrument.
Description
Technical field
The present invention relates to a kind of marine apparatus measures method, more particularly to a kind of acid-base value suitable for the development stage
(pH), the sea trial method of testing of the ocean such as dissolved oxygen (DO), turbidity water quality class (one-parameter or combination) measuring instrument.
Background technology
In recent years, marine eco-environment monitoring technology in China's is fast-developing, forms monitoring instrument system covering extensive fields,
Independent research part instrument starts to be applied.
In terms of multi-sensor, the unit such as National Ocean Technology Center, Xiamen University have developed pH, dissolved oxygen, turbid
The measuring instruments such as degree.These instruments mainly complete laboratory test in the development stage, including：According to GB/T 32065-2015
《Oceanographic instrumentation Essential Environment test method (the 1st to 17 part)》With overpassed HY 016-1992《Oceanographic instrumentation Essential Environment
Test method (the 1st to 15 part)》Carry out a systems such as low temperature, high temperature, alternating temperature, damp and hot, salt fog, vibration, impact, pressure, mildew
Row experiment indoor test；According to HY/T 098-2007《Seawater pH measuring instrument detection methods》、HYT 096-2007《Seawater dissolves
Oxygen measuring device detection method》、HY/T 100-2007《Turbidity of sea water measuring instrument detection method》Carry out laboratory metering inspection etc. standard
Survey.After the completion of working above, user is delivered.In use, these domestic equipment short-period useds can basically reach external similar
The level of equipment, but as usage time extends, measurement result is often more and more unstable.It is believed that lacking in industry
(including short-term, nonstandard) development stage sea field test and the process modification thus carried out are to produce this problem
One major reason.Since the plan of Eleventh Five-Year Plan National 863 " quality control and standardization sea trial " project, oceanographic instrumentation
The sea trial problem of equipment development is gradually paid attention to, and Chinese Marine University, National center of ocean standard and metrology etc. are single
Ocean professional standard HY/T 141-2011 are formulated in position《Oceanographic instrumentation sea trial specification》.This specification is mainly：(1) pin
To " tissue of the oceanographic instrumentation sea trial of development stage and implementation " formulate, emphasis towards sea trial process management,
It is particularly suitable for being mounted in the instrument and equipment on ship and carries out experiment；(2) it is applied between test instrument to be measured and reference instrument
The test compared of data result.Existing subject matter is：(1) title " oceanographic instrumentation " scope is too wide in range, it is impossible to
Suitable for the requirement of full field oceanographic instrumentation sea trial；(2) it is not specified by the sea trial step of all types of oceanographic instrumentations；
(3) can the data of reference instrument be still arguement instead of live water sample analysis data；(4) without long-time stability and reliability
Content of the test.
External aspect, U.S.'s S＆T organization " seashore Technology-based Alliance " (Alliance for Coastal
Technologies, ACT) in terms of ph, dissolved oxygen, turbidity instrument carry out experiment work, mainly include：The degree of accuracy, precision,
The laboratory test of response time, stability etc. and the multiple regional river courses in the U.S. or ocean scene test.Existing master
Wanting problem is：(1) the test process such as the explanation on instrument mounting platform, water sampling does not have on-the-spot test step with China
It is inconsistent to close national standard；(2) test result is mainly to record the measurement data that experiment overall process is tested instrument；(3) do not count
According to analysis and conclusion (of pressure testing) analysis.
The content of the invention
In order to solve problems of the prior art, the present invention provides a kind of ocean water quality based on ocean fixed platform
Quasi-instrument sea trial method, overcomes in the prior art《Oceanographic instrumentation sea trial specification》Without all types of oceanographic instrumentations of law regulation
Sea trial step；The data of reference instrument can not replace live water sample analysis data, without long-time stability and reliability
Specific embodiment.
The technical scheme is that：
A kind of ocean water quality quasi-instrument sea trial method based on ocean fixed platform, comprises the following steps：
(1) it is tested test instrument inspection；
(2) instrument installation is tested with laying
Tested instrument, temperature measuring set, thermohaline depth measuring instrument are arranged in lower floor's same level of test platform, and
Top 0.5m layers install one group of temperature measuring set, thermohaline depth measuring instrument again, and above instrument is respectively mounted the anti-adhesion device such as copper mesh；
Test platform be put into by steel wire rope along arm or instrument well from fixed offshore platform it is marine, test platform in water should
It can keep in a basic balance, tested instrument position is that underwater is not less than 1m, and changes adjustment in time according to tidal level.Experiment is flat
The tablecloth discharge into and platform surrounding seawater it is basicly stable after, proceed by experiment；
(3) water sampling and analysis
Water sampling frequency is 1 time/d；Water acquisition position be depth where tested instrument and apart from tested instrument no more than
0.5m；During water sampling, while record the assistance datas such as water level, water temperature, temperature, air pressure, wind speed, wind direction, relative humidity；Measure
Water sample pH, dissolved oxygen or turbidity data；
(4) data processing
Reject measurement result when tested instrument breaks down；Reject measurement knot during beyond tested apparatus measures scope
Fruit；Reject the measurement result of manual operation or measurement error through confirming repeatedly；Reject in one group of data, the absolute value of deviation is big
In more than 3 times of data value of this group of data standard deviation；Measurement result；When between two groups of temperature measuring sets on platform or thermohaline is deep
When measured value between measuring instrument is substantially inconsistent, tested apparatus measures result corresponding with the data record moment is rejected；
(5) data analysis
1) stability
Draw tested instrument measurements and the time series chart of water determination value contrast；Calculate tested instrument measurements and phase
The root-mean-square error RMSE of water determination value in the same time, is calculated by formula 1：
In formula：
Xins,i--- tested instrument measurements；
Xsam,i--- mutually water determination value in the same time；
RMSE is smaller, represents that tested instrument measurements are better closer to water determination value, stability；
2) reliability
Examining the reliability of tested instrument long-term work includes following two indexs：
Mean time between failure, calculated by formula 2：
In formula：
T --- test period, unit h；
The number of r --- failure.
The good sample rate g of data, is calculated by formula 3：
In formula：
N --- the valid data number that tested instrument obtains；
N0--- in the test period, data amount check that tested instrument should obtain.
After step (2) on-test, first the preceding 12 groups of data for being tested instrument are checked, no serious abnormality situation
Under, continue to test；If data severely subnormal or no data, experiment stops；Tested instrument is the situation of direct reading instrument, should
Daily check measurement data；When there is data severely subnormal or no data, timely abort is answered to carry out Measuring error；If
Instrument can not recover normal, answer termination test.
It is 1 time/h that the step (2), which is tested instrument, thermohaline depth measuring instrument, the sample frequency of temperature measuring set, once independent
The cycle of experiment should be no less than 30 days.
The pH determination steps of step (3) water sample are：
(1) water sample bottle volume is the wide mouth polyethylene bottles that 50ml has Double layer lid, and the sample bottle used for the first time should be cleaned, and is used
Seawater soaks 1d；
(2) with a small amount of water sample washing sample bottle 2 times, bottle is slowly filled into water sample, screws bottle cap immediately；After water sampling
It should be determined in 6h；If adding 1 drop mercuric chloride solution, bottle cap is covered, it is allowed to preserve 2d；
(3) water sample pH assay methods use pH meter method, are analyzed according in GB 17378.4-2,007 26.5,26.6.
The DO determination step of step (3) water sample is：
(1) water sample bottle volume is 125ml brown ground Pyrex bulb, and bottle stopper is taper, and ground is tight, and volume must be through
Correction；
(2) one end of emulsion tube is connected into glass tube, the other end is enclosed on the delivery port of hydrophore, releases a small amount of water sample washing
Water sample bottle 2 times；Then glass tube is inserted into water sample bottom of bottle portion, slowly injects water sample, the glass mouth of pipe is in underwater all the time, treat
When water sample is filled and overflows water sample bottle product 1/2, glass tube is slowly extracted out, there can not be bubble in bottle；Each water sample dress takes 2
Bottle.1.0mL manganese chloride solutions and 1.0mL alkaline potassium iodide solution are implanted sequentially with quantitative charger immediately, bottle stopper is filled in, pins
Bottle cap turns upside down bottle no less than 20 times；
(3) water sample DO determination method uses iodimetric titration, is divided according in GB 17378.4-2,007 31.5,31.6
Analysis.
The turbidity determination step of step (3) water sample is：
(1) water sample bottle is without particular/special requirement；
(2) after water sampling, sample should be released from sampler as early as possible；Sampler is shaken while water sample is bottled, is prevented
Only suspension settles in sampler；Turbidity should be determined after water sampling on the day of；If add 5mL chlorine by per 500mL water samples
Change mercury solution, 22d can be preserved；
(3) water sample turbidity determination method uses turbidimeter method or AAS, according in GB 17378.4-2007
30.1.5,30.3.5 analyzed.
The beneficial effects of the invention are as follows：The inventive method can provide the sea of detailed ocean water quality class parameter measurement instrument
Upper test procedure；Using live water acquisition data as comparison data, the arguement that reference instrument uses is avoided, data truly may be used
Lean on；Give the data analysing method of long-time stability, reliability.
This method is to existing ocean professional standard HY/T 141-2011《Oceanographic instrumentation sea trial specification》Partial content
Improved, it is proposed that suitable for the sea of the ocean such as pH, dissolved oxygen, turbidity of development stage water quality class parameter measurement instrument
Test procedure and data analysing method.
Brief description of the drawings
Ocean water quality quasi-instrument sea trial method flow diagram of Fig. 1 present invention based on ocean fixed platform；
Test platform structural representation used in Fig. 2 present invention；
Fig. 3 is tested instrument whole measured value and the time series chart of water determination value；
Fig. 4 corresponds to the tested instrument measurements at moment and the time series chart of water determination value；
Wherein, 1, test platform；2nd, thermohaline depth measuring instrument；3rd, temperature measuring set；4th, it is tested instrument.
Embodiment
The present invention will be described in detail with reference to the accompanying drawings and detailed description.
The test procedure of the inventive method is：
(1) it is tested test instrument inspection
The shell of tested instrument and the enamelled coating on top layer, coating etc. answer uniform color, it is smooth firmly, should not have obvious wiping
Wound, corrosion, bottom drain, crackle and foaming phenomena；The cable plug of tested instrument should be connected reliably, and each fastener, connector should not
There is loose phenomenon；After inspection terminates, tested instrument mug is tackled, photo answers that details is clear, flashless or overexposure luminous point.
(2) instrument installation is tested with laying
Tested instrument (4 in accompanying drawing 2), 1 temperature measuring set (3 in Fig. 2), 1 thermohaline depth measuring instrument (2 in Fig. 2) installation
In lower floor's same level of test platform (1 in Fig. 2), and up 0.5m layers install 1 temperature measuring set (in Fig. 2 again
3), 1 thermohaline depth measuring instrument (2 in Fig. 2), above instrument all should install the anti-adhesion device such as copper mesh.
Thermohaline depth measuring instrument recommends SBE37 types, and it is T-shaped that temperature measuring set recommends RBR solo.
Test platform is put into marine by steel wire rope along arm or instrument well from fixed offshore platform.Test platform should in water
It can keep in a basic balance, tested instrument position is that underwater is not less than 1m, and changes adjustment in time according to tidal level.Experiment is flat
The tablecloth discharges into and platform surrounding seawater is basicly stable rear (typically should be greater than 30min), proceeds by experiment.
After on-test, first the preceding 12 groups of data for being tested instrument should be checked, in the case of no serious abnormality, continue to try
Test.If data severely subnormal or no data, experiment stops.Tested instrument is the situation of direct-reading (online) instrument, should be every
Its check measurement data.When there is data severely subnormal or no data, timely abort is answered to carry out Measuring error.If instrument
Device can not recover normal, answer termination test.It is reply test platform, instrument, attached on cable every at most 6 days in test period
Thing once check, clear up.
Tested instrument, temperature measuring set, the sample frequency of thermohaline depth measuring instrument are 1 time/h, on the basis of Beijing time.
The cycle of independent experiment should be no less than 30 days.During conditions permit, it can be opened in a calendar year in each season
Open up an independent experiment.
(3) water sampling and analysis
Water sampling frequency is 1 time/d.Water acquisition position be depth where tested instrument and apart from tested instrument no more than
0.5m.During water sampling, the assistance datas such as water level, water temperature, temperature, air pressure, wind speed, wind direction, relative humidity should be recorded simultaneously.
1)pH
A) water sample bottle volume is the wide mouth polyethylene bottles that 50ml has Double layer lid.The sample bottle used for the first time should be cleaned, and use
Seawater soaks 1d.
B) with a small amount of water sample washing sample bottle 2 times, bottle is slowly filled into water sample, screws bottle cap immediately.After water sampling
It should be determined in 6h.If adding 1 drop mercuric chloride solution, bottle cap is covered, it is allowed to preserve 2d.
C) water sample pH assay methods use pH meter method, are analyzed according in GB 17378.4-2,007 26.5,26.6.
2) dissolved oxygen
A) water sample bottle volume is 125ml brown ground Pyrex bulb, and bottle stopper is taper, and ground is tight, and volume must be through
Correction.
B) one end of emulsion tube is connected into glass tube, the other end is enclosed on the delivery port of hydrophore, releases a small amount of water sample washing
Water sample bottle 2 times.Then glass tube is inserted into water sample bottom of bottle portion, slowly injects water sample, the glass mouth of pipe is in underwater all the time, treat
When water sample is filled and overflows water sample bottle product 1/2, glass tube is slowly extracted out, there can not be bubble in bottle.Each water sample dress takes 2
Bottle.1.0mL manganese chloride solutions and 1.0mL alkaline potassium iodide solution are implanted sequentially with quantitative charger immediately, fills in bottle stopper (in bottle
Forbidden have bubble), pin bottle cap and bottle turns upside down no less than 20 times.
C) water sample DO determination method uses iodimetric titration, is divided according in GB 17378.4-2,007 31.5,31.6
Analysis.
3) turbidity
A) water sample bottle is without particular/special requirement.
B) after water sampling, sample should be released from sampler as early as possible.Sampler is shaken while water sample is bottled, is prevented
Suspension settles in sampler.Turbidity should be determined after water sampling on the day of.If add 5mL chlorinations by per 500mL water samples
Mercury solution, 22d can be preserved.
C) water sample turbidity determination method uses turbidimeter method or AAS, according in GB 17378.4-2007
30.1.5,30.3.5 analyzed.
(4) data processing
Reject measurement result when tested instrument breaks down；Reject measurement knot during beyond tested apparatus measures scope
Fruit；Reject the measurement result of manual operation or measurement error through confirming repeatedly；Reject in one group of data, the absolute value of deviation is big
In more than 3 times of measurement result of this group of data standard deviation；When between two groups of temperature measuring sets on platform or thermohaline depth measuring instrument
Between measured value it is substantially inconsistent when, reject and corresponding with the data record moment be tested apparatus measures results；
Note：Deviation refers to each unitary determination value and the difference of this group of data arithmetic average value in one group of data.
(5) data analysis
1) stability
Draw tested instrument measurements and the time series chart of water determination value contrast；Calculate tested instrument measurements and phase
The root-mean-square error RMSE of water determination value in the same time, is calculated by formula 1.
In formula：
Xins,i--- tested instrument measurements；
Xsam,i--- mutually water determination value in the same time；
RMSE is smaller, represents that tested instrument measurements are better closer to water determination value, stability.
2) reliability
Examining the reliability of tested instrument long-term work includes following two indexs：
Mean time between failure, calculated by formula 2；
In formula：
T --- test period, unit h；
The number of r --- failure.
The good sample rate g of data, is calculated by formula 3.
In formula：
N --- the valid data number that tested instrument obtains；
N0--- in the test period, data amount check that tested instrument should obtain.
Embodiment 1
Illustrate test data analyzer process by taking dissolved oxygen (DO) measuring instrument as an example
In May, 2012 Qingdao wheat island marine site dissolved oxygen sensing instrument field test data and live water acquisition data
1st, data processing is carried out according to step (4)
(1) measurement result during tested instrument failure is rejected：On May 23 12:On 00 to May 23 18:00 totally 6 groups of data.
(2) other disallowable data：Nothing.
(3) actually active data number：Totally 597 groups.
2nd, data analysis is carried out according to step (5)
(1) stability analysis
1) time series chart (Fig. 3) of tested instrument whole measured value and water determination value is drawn, the corresponding moment is tested
Instrument measurements and the time series chart (Fig. 4) of water determination value；
2) calculating root-mean-square error by formula 1 is：RMSE=0.0281, root-mean-square error is smaller, and stability of instrument is preferable.
(2) fail-safe analysis
1) mean time between failure
Test period T：T=31d × 24h/d=744h；
The number r of failure：Are carried out by analysis and is found for experiment process record and data, within the whole test period, from 5
On the moon 48:On 00 to May 59:00th, May 21 days 0:On 00 to May 21 9:00th, May 23 days 12:On 00 to May 23 18:00、5
On the moon 28 9:On 00 to May 28 14:00th, May 30 days 11:On 00 to May 30 14:During 00, tested instrument occurs 5 times and shown altogether
Write failure, therefore r=5；
MTBF=T/r=744h/5=148.80h is calculated according to formula 2.
2) the good sample rate g of data
Valid data number N：According to step (4) result, N=597；
Data amount check N should be obtained0：According to the sample frequency that instrument is set as 1 time/h, N0=1 time/h × 24h/d × 31d=
744；
The good sample rate g=N/N of data is calculated according to formula 30=80.24%.
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (6)
- A kind of 1. ocean water quality quasi-instrument sea trial method based on ocean fixed platform, it is characterised in that including following step Suddenly：(1) it is tested test instrument inspection；(2) instrument installation is tested with layingTested instrument, temperature measuring set, thermohaline depth measuring instrument are arranged in lower floor's same level of test platform, and up 0.5m layers install one group of temperature measuring set, thermohaline depth measuring instrument again, and above instrument is respectively mounted the anti-adhesion device such as copper mesh；Test platform is put into marine by steel wire rope along arm or instrument well from fixed offshore platform, and test platform should be able to be protected in water Hold in a basic balance, tested instrument position is that underwater be not less than 1m, and is changed according to tidal level and adjusted in time.Test platform cloth Discharge into and platform surrounding seawater it is basicly stable after, proceed by experiment；(3) water sampling and analysisWater sampling frequency is 1 time/d；Water acquisition position is to be tested instrument place depth and apart from tested instrument no more than 0.5m； During water sampling, while record the assistance datas such as water level, water temperature, temperature, air pressure, wind speed, wind direction, relative humidity；Determine water sample PH, dissolved oxygen or turbidity data；(4) data processingReject measurement result when tested instrument breaks down；Reject measurement result during beyond tested apparatus measures scope；Pick Except the measurement result of the manual operation through confirming repeatedly or measurement error；Reject in one group of data, the absolute value of deviation is more than should The measurement result that more than 3 times of group data standard deviation；When between two groups of temperature measuring sets on platform or between thermohaline depth measuring instrument Measured value it is substantially inconsistent when, reject and corresponding with the data record moment be tested apparatus measures results；(5) data analysis1) stabilityDraw tested instrument measurements and the time series chart of water determination value contrast；Calculate tested instrument measurements with it is identical when The root-mean-square error RMSE of water determination value is carved, is calculated by formula 1：<mrow> <mi>R</mi> <mi>M</mi> <mi>S</mi> <mi>E</mi> <mo>=</mo> <msqrt> <mfrac> <mrow> <munderover> <mo>&Sigma;</mo> <mrow> <mi>i</mi> <mo>=</mo> <mn>1</mn> </mrow> <mi>n</mi> </munderover> <msup> <mrow> <mo>(</mo> <msub> <mi>X</mi> <mrow> <mi>i</mi> <mi>n</mi> <mi>s</mi> <mo>,</mo> <mi>i</mi> </mrow> </msub> <mo>-</mo> <msub> <mi>X</mi> <mrow> <mi>s</mi> <mi>a</mi> <mi>m</mi> <mo>,</mo> <mi>i</mi> </mrow> </msub> <mo>)</mo> </mrow> <mn>2</mn> </msup> </mrow> <mi>n</mi> </mfrac> </msqrt> <mo>-</mo> <mo>-</mo> <mo>-</mo> <mrow> <mo>(</mo> <mn>1</mn> <mo>)</mo> </mrow> </mrow>In formula：Xins,i--- tested instrument measurements；Xsam,i--- mutually water determination value in the same time；RMSE is smaller, represents that tested instrument measurements are better closer to water determination value, stability；2) reliabilityExamining the reliability of tested instrument long-term work includes following two indexs：Mean time between failure, calculated by formula 2：<mrow> <mi>M</mi> <mi>T</mi> <mi>B</mi> <mi>F</mi> <mo>=</mo> <mfrac> <mi>T</mi> <mi>r</mi> </mfrac> <mo>-</mo> <mo>-</mo> <mo>-</mo> <mrow> <mo>(</mo> <mn>2</mn> <mo>)</mo> </mrow> </mrow>In formula：T --- test period, unit h；The number of r --- failure.The good sample rate g of data, is calculated by formula 3：<mrow> <mi>g</mi> <mo>=</mo> <mfrac> <mi>N</mi> <msub> <mi>N</mi> <mn>0</mn> </msub> </mfrac> <mo>-</mo> <mo>-</mo> <mo>-</mo> <mrow> <mo>(</mo> <mn>3</mn> <mo>)</mo> </mrow> </mrow>In formula：N --- the valid data number that tested instrument obtains；N0--- in the test period, data amount check that tested instrument should obtain.
- 2. the ocean water quality instrument class sea trial method based on ocean fixed platform, its feature exist according to claim 1 In, after step (2) on-test, first the preceding 12 groups of data for being tested instrument are checked, in the case of no serious abnormality, after Continuous experiment；If data severely subnormal or no data, experiment stops；Tested instrument is the situation of direct reading instrument, should be daily Check measurement data；When there is data severely subnormal or no data, timely abort is answered to carry out Measuring error；If instrument It can not recover normal, answer termination test.
- 3. the ocean water quality quasi-instrument sea trial method based on ocean fixed platform, its feature exist according to claim 1 It is 1 time/h to be tested instrument, thermohaline depth measuring instrument, the sample frequency of temperature measuring set in, the step (2), an independent experiment Cycle should be no less than 30 days.
- 4. the ocean water quality quasi-instrument sea trial method based on ocean fixed platform, its feature exist according to claim 1 In the pH determination steps of step (3) water sample are：(1) water sample bottle volume is the wide mouth polyethylene bottles that 50ml has Double layer lid, and the sample bottle used for the first time should be cleaned, and use seawater Soak 1d；(2) with a small amount of water sample washing sample bottle 2 times, bottle is slowly filled into water sample, screws bottle cap immediately；Should be after water sampling Determined in 6h；If adding 1 drop mercuric chloride solution, bottle cap is covered, it is allowed to preserve 2d；(3) water sample pH assay methods use pH meter method, are analyzed according in GB 17378.4-2,007 26.5,26.6.
- 5. the ocean water quality quasi-instrument sea trial method based on ocean fixed platform, its feature exist according to claim 1 In the DO determination step of step (3) water sample is：(1) water sample bottle volume is 125ml brown ground Pyrex bulb, and bottle stopper is taper, and ground is tight, and volume must be through changing Just；(2) one end of emulsion tube is connected into glass tube, the other end is enclosed on the delivery port of hydrophore, releases a small amount of water sample washing water sample Bottle 2 times；Then glass tube is inserted into water sample bottom of bottle portion, slowly injects water sample, the glass mouth of pipe is in underwater all the time, treat water sample When filling and overflowing water sample bottle product 1/2, glass tube is slowly extracted out, there can not be bubble in bottle；Each water sample dress takes 2 bottles；It is vertical 1.0mL manganese chloride solutions and 1.0mL alkaline potassium iodide solution are implanted sequentially with quantitative charger, bottle stopper is filled in, pins bottle cap Bottle is turned upside down no less than 20 times；(3) water sample DO determination method uses iodimetric titration, is analyzed according in GB 17378.4-2,007 31.5,31.6.
- 6. the ocean water quality quasi-instrument sea trial method based on ocean fixed platform, its feature exist according to claim 1 In the turbidity determination step of step (3) water sample is：(1) water sample bottle is without particular/special requirement；(2) after water sampling, sample should be released from sampler as early as possible；Sampler is shaken while water sample is bottled, prevents from hanging Float settles in sampler；Turbidity should be determined after water sampling on the day of；If add 5mL mercury chloride by per 500mL water samples Solution, 22d can be preserved；(3) water sample turbidity determination method uses turbidimeter method or AAS, according to 30.1.5 in GB 17378.4-2007, 30.3.5 analyzed.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108759905A (en) * | 2018-04-04 | 2018-11-06 | 国家海洋技术中心 | A kind of special thermohaline depth measuring instruments of binary parallel A RGO are than survey method |
| CN109540174A (en) * | 2018-11-19 | 2019-03-29 | 上海海洋大学 | Based on the multi-site of sea test range with the comparison method of model marine instrument and equipment |
| CN114636441A (en) * | 2022-02-23 | 2022-06-17 | 国家海洋技术中心 | Multi-parameter sensor suitable for underwater low-temperature high-pressure environment and testing method thereof |
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| CN109540174A (en) * | 2018-11-19 | 2019-03-29 | 上海海洋大学 | Based on the multi-site of sea test range with the comparison method of model marine instrument and equipment |
| CN114636441A (en) * | 2022-02-23 | 2022-06-17 | 国家海洋技术中心 | Multi-parameter sensor suitable for underwater low-temperature high-pressure environment and testing method thereof |
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