CN106168628A - With concentration test device in a kind of sea water - Google Patents

Abstract

With concentration test device in a kind of sea water, by neutralizing enrichment facility, CCE, polyfluortetraethylene pipe and control line form, and neutralize 2 syringe pumps that enrichment facility connects by polyfluortetraethylene pipe by the ultra-pure water storage bottle of fluid reservoir, sample bottle, peristaltic pump, trapping column, electronic two clematis stem bulk samples collection valve, neutralizer, electronic two clematis stem sample concentration valves, chromatographic system, controllers form.The present invention is manipulated by device to control sample flow and to neutralize electric current, is completed the neutralization concentration process of sample by pipeline and circuit online, and to chromatographic system for sample, completes to analyze.Present configuration is simple, easy to operate, practical, and low cost improves degree of accuracy.It is very big that the present invention is applicable to some saline and alkalines, but in the analysis of ion concentration the most low-down sample experiment.

Description

A seawater neutralization concentration test device

technical field

The invention relates to the technical field of analytical chemistry, in particular to a seawater neutralization concentration test device.

Background technique

For the analysis of high-saline alkaline seawater samples, their salinity is very high, but the ion content is very low, and proper pre-treatment is required for detection and analysis.

High-saline alkaline seawater samples often affect the analysis results or the choice of analysis methods, so the samples must be neutralized before analysis. The traditional neutralization method is chemical neutralization or resin neutralization. During the implementation process Ion pollution will be introduced in the sample, which will affect the results of the samples to be analyzed and make the results higher;

However, the content of the measured components is too low, affected by the sensitivity of the instrument, it has been working in the limit state of the instrument, the detection reproducibility is poor, and the accuracy is low, which seriously affects the test results. The traditional test method is to inject a large volume of samples, resulting in large dead volume, poor detection response value, poor quantitative reproducibility, and low accuracy.

Contents of the invention

The object of the present invention is to provide a seawater neutralization concentration test device in order to solve the above problems.

The object of the present invention can be achieved through the following measures:

A seawater neutralization and concentration test device, including a liquid storage part, a neutralization and concentration part, and a control part. The liquid storage part includes an ultrapure water storage bottle and a sample bottle; the neutralization and concentration part includes a syringe pump I, a syringe pump II, a peristaltic pump , a trapping column, an electric two-position six-way large-volume sample collection valve, a neutralizer, an electric two-position six-way sample concentration valve, and a chromatographic system; the control part includes a controller and a control connection line.

The controller is equipped with command control keyboard and liquid crystal display.

The controller is connected with the syringe pump I, the syringe pump II, the peristaltic pump, the electric two-position six-way large-volume sample collection valve, the neutralizer, and the electric two-position six-way sample concentration valve through the control connection line.

The ultrapure water storage bottle is connected with the syringe pump I through the PE tube.

The ultrapure water storage bottle is connected with the peristaltic pump through the PE tube.

The test sample bottle is connected with the syringe pump II through the PE tube.

The electric two-position six-way large-volume sample collection valve communicates with syringe pump I and syringe pump II, neutralizer, and waste liquid barrel I respectively.

The neutralizer is respectively connected with the electric two-position six-way large-volume sample collection valve, the peristaltic pump, the electric two-position six-way sample concentration valve, and the waste liquid bucket II.

The electric two-position six-port sample concentration valve communicates with the neutralizer and the chromatographic system respectively.

The trap column is set between the syringe pump and the electric two-position six-way large-volume sample collection valve.

The present invention is composed of a neutralization and concentration device and a circuit control device. The neutralization and concentration device consists of an ultrapure water storage bottle of a liquid storage tank and two injection pumps connected by a sample bottle through a polytetrafluoroethylene tube, a peristaltic pump, a capture column, It consists of an electric two-position six-way large-volume sample collection valve, a neutralizer, an electric two-position six-way sample concentration valve, a chromatographic system, and a controller.

The liquid storage tank is composed of an ultrapure water storage bottle and a test sample bottle.

The invention controls the sample flow rate and the neutralization current by operating the controller, completes the neutralization and concentration process of the sample online through the pipeline and the circuit, and supplies the sample to the chromatographic system to complete the analysis.

Advantage of the present invention and beneficial effect are:

1. The present invention has simple structure, convenient operation, strong practicability and low cost. The reproducibility and precision of the method are improved.

2. The present invention can choose to use the online neutralization and concentration function of the sample through the switching of the control circuit and the valve, which reduces the influence of the strong saline-alkaline sample on the analysis result, expands the choice of the analysis party; improves the response value of the instrument detection, The reproducibility and accuracy of instrument testing are guaranteed.

3. The present invention is applicable to the analysis experiments of some samples with very high salinity and very low ion content.

4. The present invention ensures the reproducibility of the method and improves the accuracy of the method.

Description of drawings

Fig. 1 is a structural schematic diagram of the present invention.

detailed description

Below in conjunction with accompanying drawing and embodiment the present invention will be further described:

As shown in Figure 1, a kind of seawater neutralizes concentration test device, comprises liquid storage part, neutralizes and concentrates part, control part, and described liquid storage part comprises ultrapure water storage bottle 1 and sample bottle 2; The concentration part includes syringe pump Ⅰ3, syringe pump Ⅱ4, peristaltic pump 5, trapping column 6, electric two-position six-way large-volume sample collection valve 7, neutralizer 8, electric two-position six-way sample concentration valve 9, and chromatographic system 10 ; The control part includes a controller 11 and a control connection line.

The controller 11 is provided with an instruction control keyboard 13 and a liquid crystal display 14 .

The controller 11 is connected with the injection pump I3, the injection pump II4, the peristaltic pump 5, the electric two-position six-way large-volume sample collection valve 7, the neutralizer 8, and the electric two-position six-way sample concentration valve 9 through the control connection line.

The ultrapure water storage bottle 1 is in communication with the syringe pump I3 through the PE tube 12 .

The ultrapure water storage bottle 1 communicates with the peristaltic pump 5 through a PE pipe 12 .

The test sample bottle 2 communicates with the syringe pump II 4 through the PE tube 12 .

The electric two-position six-way large-volume sample collection valve 7 communicates with the syringe pumps I3 and II4, the neutralizer 8, and the waste liquid barrel I15 respectively.

The neutralizer 8 communicates with the electric two-position six-way large-volume sample collection valve 7, the peristaltic pump 5, the electric two-position six-way sample concentration valve 9, and the waste liquid barrel II16 respectively.

The electric two-position six-way sample concentration valve 9 communicates with the neutralizer 8 and the chromatographic system 10 respectively.

The trap column 6 is arranged between the syringe pump 3 and the electric two-position six-way large-volume sample collection valve 7 .

Example

The sample pump 4 carries the sample into the two-position six-way large-volume sample collection valve 7. At this time, the solid line of the two-position six-way large-volume sample collection valve 7 is connected, and the sample temporarily stays in the quantification of the two-position six-way large-volume sample collection valve 7. In the ring, excess samples are discharged into the waste liquid channel I15 for collection; after the pure water is captured by the trapping column by the syringe pump 3, it is pumped into the two-position six-way large-volume sample collection valve 7. At this time, the two-position six-way large-volume sample collection valve 7 The dotted line is connected, and under the push of pure water, the sample in the quantitative loop is brought into the neutralizer 8 for neutralization, and the neutralized sample enters the electric two-position six-way sample concentration valve 9 to concentrate, and the concentrated sample enters the chromatographic system 10 Perform sample analysis. At the same time, the peristaltic pump 5 continuously pumps ultrapure water into the neutralizer to regenerate the neutralizer, and the waste liquid of the regeneration liquid flows into the waste liquid channel II 16 from the waste liquid pipe for collection.

The above-mentioned syringe pump I3, syringe pump II4, peristaltic pump 5, electric two-position six-way large-volume sample collection valve 7, neutralizer 8, electric two-position six-way sample concentration valve 9 all control the keyboard 13 through the command of the control box 11 Complete the operation and realize the neutralization and concentration process of the sample.

Claims (1)

1., in sea water and a concentration test device, including reservoir portion, neutralize concentrating part, control part, it is characterized in that: institute The reservoir portion stated includes ultra-pure water storage bottle (1) and sample bottle (2)；Described neutralization concentrating part includes syringe pump I (3), note Penetrate pump II (4), peristaltic pump (5), trapping column (6), electronic two clematis stem bulk samples collect valve (7), neutralizer (8), electronic Two clematis stem sample concentration valve (9), chromatographic systems (10)；Described control part includes controller (11) and controls connecting line；

Controller (11) is provided with instruction and controls keyboard (13) and LCDs (14)；

Controller (11) is big by controlling connecting line and syringe pump I (3), syringe pump II (4), peristaltic pump (5), electronic two clematis stem Volume sample collects valve (7), neutralizer (8), electronic two clematis stem sample concentration valve (9) connection；

Ultra-pure water storage bottle (1) is connected by PE pipe (12) with syringe pump I (3)；

Ultra-pure water storage bottle (1) is connected by PE pipe (12) with peristaltic pump (5)；

Test specimen bottle (2) is connected by PE pipe (12) with syringe pump II (4)；

Electronic two clematis stem bulk samples collect valve (7) respectively with syringe pump I (3) and syringe pump II (4), neutralizer (8), give up Liquid bucket I (15) connects；

Neutralizer (8) collects valve (7), peristaltic pump (5), electronic two clematis stem samples with electronic two clematis stem bulk samples respectively Concentrate valve (9), waste liquid barrel II (16) connection；

Electronic two clematis stem sample concentration valve (9) connect with neutralizer (8), chromatographic system (10) respectively；

Trapping column (6) is arranged at syringe pump (3) and electronic two clematis stem bulk samples are collected between valve (7).