In situ deposit-aqueous interface water-quality sampler and sampling method thereof
A water quality sampler and water quality sampling technology, applied in the direction of sampling devices, etc., to achieve the effect of convenient use and installation, convenient operation and strong operability
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[0023] Example 1,
[0024] Examples of in-situ sediment-water interface water quality samplers, see figure 1 with figure 2 The sampler includes two long flat plates and a permeable membrane 2; one plate is the sampling plate 1, and the other is the protective plate 3. The sampling plate and the protective plate clamp the permeable membrane and are fixed together by screws; The longitudinal sequence of the plate is divided into sediment gap water sampling section 2-1 and interface overlying water sampling section 2-2. Along the longitudinal direction of the sampling plate, a plurality of longitudinal spacings are set in the sediment gap water sampling section and the interface overlying water sampling section, which is 2mm- A 3mm horizontal groove 2-3 is used as a water quality sampling chamber. The volume of the groove is between 2000 microliters and 4000 microliters, the permeable membrane covers the groove, and the protective plate is provided at the position of the groove corr...
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[0028] Example 2,
[0029] The preferred embodiment of the in-situ sediment-water interface water quality sampler, see Example 1. The difference from Example 1 is that the distance between the longitudinal groove and the groove is 2.5 mm, and the volume of the groove is 3000 micrometers. Rise.
Example Embodiment
[0030]Example 3,
[0031] The sampling method of the in-situ sediment-water interface water quality sampler is the in-situ sediment-water interface water quality sampler, the sampler is the in-situ sediment-water interface water quality sampler described in Example 1, and the sampling method steps include:
[0032] a. Remove the dissolved oxygen in the distilled water from the water sampling chamber, and put the in-situ sediment-water interface water sampler into a closed container with water, the sampling chamber on the sampling plate upwards, the sampler is completely immersed in water, and the water temperature is maintained At 20 degrees ± 2 degrees, continue to add nitrogen to the water, measure the dissolved oxygen concentration in the water, and control the dissolved oxygen concentration in the water to be lower than 1 mg / L for 30 minutes;
[0033] b. Sampling, insert the sediment gap water sampling section of the in-situ sediment-water interface water quality sampler into ...
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