CN1613794A - Automatic digester for dissolving organic nitrogenous and phosphor in sea water - Google Patents
Automatic digester for dissolving organic nitrogenous and phosphor in sea water Download PDFInfo
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- CN1613794A CN1613794A CN 200410036079 CN200410036079A CN1613794A CN 1613794 A CN1613794 A CN 1613794A CN 200410036079 CN200410036079 CN 200410036079 CN 200410036079 A CN200410036079 A CN 200410036079A CN 1613794 A CN1613794 A CN 1613794A
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Abstract
An automatic digestive equipment for dissolving organic nitrogenous and organic phosphorous in sea water consists of a sampler unit, a mixer, an ultraviolet digestive unit and a catalyzed oxidizing unit. The sampler unit consists of at least two sampler inlets, a sea water sampler inlet and an oxidant catalyst sampler inlet, and an outlet communicated with the mixer, which is connected with the ultraviolet digestive unit by pipeline, and the ultraviolet digestive unit is connected with the catalyzed oxidizing unit. Its advantages include high digestive efficiency, low consumption and simple apparatus.
Description
Technical field
The present invention relates to a kind ofly utilize ultraviolet digestion in conjunction with persulfate oxidation and utilize catalyzer to decompose the automatic digestion instrument of dissolved organic nitrogen and phosphorus in the seawater.
Background technology
Nitrogen and phosphorus are as source of students key element important in the ocean environment, and the primary production process of Marine ecosystems is being controlled in its distribution in water surrounding.At present the analysis of dissolved organic nitrogen, phosphorus can't directly be measured in the seawater, just can measure after must at first making it to transform into dissolved inorganic nitrogen, phosphorus by certain digestion method.The method of decomposing dissolved organic nitrogen, phosphorus mainly contains sulfuric acid and hydrogen peroxide digestion method, Perchloric Acid Digestion method, persulphate chemical oxidization method, ultraviolet photochemistry oxidation style, sal epsom high-temperature oxidation, nitrate oxidation style, hydride one vapor-phase chromatography etc.In these analytical procedures, be widely adopted at present and effect has following several preferably:
1. persulfate oxidation method;
2. ultraviolet photochemistry oxidation style;
From the result, above several method is all higher to the decomposition efficiency of dissolved organic nitrogen, but the decomposition efficiency of dissolved organic phosphorus is had nothing in common with each other.
Dissolved organic phosphorus in the seawater can be divided into organic single phosphorus and organic poly-phosphorus again according to the combination of phosphorus atom.Organic single phosphorus is meant the organic compound with C-O-P chemical bonding structure, and organic poly-phosphorus is meant the organic compound with P-O-P chemical bonding structure.Adopt the organic single phosphorus of ultraviolet photochemistry oxidation style more easily to decompose, and invalid to organic poly-phosphorus; The persulfate oxidation method is under situation hand-manipulated, owing to can use (120 ℃ of High Temperature High Pressure, 1.2 individual normal atmosphere), can decompose the dissolved organic phosphorus of the various forms in the seawater effectively, be at present effective means, so high temperature persulfate oxidation method also is general in the world experimental technique.But the persulfate oxidation method owing to be normal temperature, normal pressure (being lower than 100 ℃, 1 normal atmosphere) condition, can not be decomposed the organic poly-phosphorus in the seawater if be used for automatic digestion effectively.
More than several digestion methods also have a lot of shortcomings: complex operation step, digestion time is long, precision is poor, is unsuitable in situ measurement.
Summary of the invention
At the problems referred to above, the purpose of this invention is to provide a kind of automatic digestion instrument that is applicable to dissolved organic nitrogen and phosphorus in the seawater sample, can be applied to bank base or ship base field monitoring.
The present invention includes sample injection unit, mixing tank, ultraviolet digestion unit and catalytic oxidation unit, described sample injection unit comprises two injection ports at least, seawater sample injection port and oxygenant and catalyzer injection port also comprise an outlet that links to each other with mixing tank; Mixing tank is connected with ultraviolet digestion unit by pipeline, and ultraviolet digestion unit is connected with catalytic oxidation unit again.
Wherein said ultraviolet digestion unit comprises volution silica tube winding and ultraviolet lamp, and ultraviolet lamp is placed in the central authorities of volution silica tube winding.
Wherein said catalytic oxidation unit comprises quartzy pipeline and is the oil bath of its heating.
Advantage of the present invention is to adopt dissolved organic nitrogen, phosphorus in shortwave ultraviolet lamp (185nm) the digestion seawater sample, with in the bibliographical information, long-wave ultra violet lamp (254nm or 365nm) compares, and stronger energy is arranged; The silica tube of the present invention design is the volution winding, and ultraviolet lamp is placed in the central authorities of volution silica tube winding, and the shell internal cavity is vacuum environment, has reduced ultraviolet loss, has prolonged the reaction times; , compare simultaneously, have digestive efficiency height, sample (reagent) and consume less, realize characteristics such as the on-the-spot digestion automatically of sample and equipment are simple with current international practice high temperature persulfate oxidation method in conjunction with persulfate oxidation (catalyzer).Should digest the instrument low cost of manufacture automatically, be easy to produce in batches.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is that ultraviolet digests unitary structural representation.
Embodiment
As shown in Figure 1, sample injection unit of the present invention is a multi-channel peristaltic pump 1, and it comprises two sample intake passages 2 and 3.Mixing tank 4 is that one the inside of a plurality of injection ports and outlet is arranged is the box body of cavity.
Ultraviolet digests unitary detailed structure as shown in Figure 2, and it comprises shell 9, valve 10, holds the volution silica tube winding 5 and the shortwave ultraviolet lamp 6 of seawater sample, and shortwave ultraviolet lamp 6 (185nm) is installed in the cavity of silica tube winding 5.Shell 9 is a light-proof material, cavity wherein can be evacuated by valve 10.
Catalytic oxidation unit comprises the quartzy pipeline 7 of volution and is the oil bath 8 of its heating.
Seawater sample and oxygenant and catalyzer pump into mixing tank 4 by sample intake passage 2,3 respectively by multi-channel peristaltic pump 1 control, seawater sample and oxygenant and catalyzer are after mixing, enter volution silica tube winding 5, at first decompose via shortwave ultraviolet lamp 6 (185nm), sample enters quartzy pipeline 7 subsequently then, under the effect of (95 ℃) and catalyzer under the heating of oil bath 8, carried out digest and decompose by Potassium Persulphate, Digestive system is measured by pipeline output.
Claims (5)
1. dissolved organic nitrogen and phosphorus digest instrument automatically in the seawater, it is characterized in that it comprises sample injection unit, mixing tank, ultraviolet digestion unit and catalytic oxidation unit, described sample injection unit comprises two injection ports at least, seawater sample injection port and oxygenant and catalyzer injection port also comprise an outlet that links to each other with mixing tank; Mixing tank is connected with ultraviolet digestion unit by pipeline, and ultraviolet digestion unit is connected with catalytic oxidation unit again.
2. automatic digestion instrument according to claim 1 is characterized in that described sample injection unit is a multi-channel peristaltic pump.
3. automatic digestion instrument according to claim 1 is characterized in that described mixing tank is that one the inside of a plurality of injection ports and outlet is arranged is the box body of cavity.
4. automatic digestion instrument according to claim 1 is characterized in that described ultraviolet digestion unit comprises volution silica tube winding and ultraviolet lamp, and ultraviolet lamp is placed in the central authorities of volution silica tube winding.
5. automatic digestion instrument according to claim 1 is characterized in that described catalytic oxidation unit comprises quartzy pipeline and is the oil bath of its heating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410036079 CN1613794A (en) | 2004-11-15 | 2004-11-15 | Automatic digester for dissolving organic nitrogenous and phosphor in sea water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410036079 CN1613794A (en) | 2004-11-15 | 2004-11-15 | Automatic digester for dissolving organic nitrogenous and phosphor in sea water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1613794A true CN1613794A (en) | 2005-05-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410036079 Pending CN1613794A (en) | 2004-11-15 | 2004-11-15 | Automatic digester for dissolving organic nitrogenous and phosphor in sea water |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1613794A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102235991A (en) * | 2010-05-07 | 2011-11-09 | 中国科学院电子学研究所 | Integrated total phosphorus and total nitrogen micro sensor system |
| CN103398886A (en) * | 2013-08-07 | 2013-11-20 | 苏州扬清芯片科技有限公司 | Online water quality digestion system |
-
2004
- 2004-11-15 CN CN 200410036079 patent/CN1613794A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102235991A (en) * | 2010-05-07 | 2011-11-09 | 中国科学院电子学研究所 | Integrated total phosphorus and total nitrogen micro sensor system |
| CN102235991B (en) * | 2010-05-07 | 2013-07-24 | 中国科学院电子学研究所 | Integrated total phosphorus and total nitrogen micro sensor system |
| CN103398886A (en) * | 2013-08-07 | 2013-11-20 | 苏州扬清芯片科技有限公司 | Online water quality digestion system |
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