In-situ concentration device and method for phytoplankton sample

A technology for concentrating device and phytoplankton, which is applied in the field of in-situ concentrating device for phytoplankton samples to achieve the effects of reducing errors, reducing disturbance and having a simple device structure

Active Publication Date: 2021-06-22
NORTH CHINA SEA ENVIRONMENTAL MONITORING CENT OF STATE OCEANIC ADMINISTATION
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  • Abstract
  • Description
  • Claims
  • Application Information

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  • In-situ concentration device and method for phytoplankton sample
  • In-situ concentration device and method for phytoplankton sample

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Embodiment 1

[0038] This embodiment provides an in-situ concentration device for phytoplankton samples, such as Figure 1-2As shown, it includes a concentration device and a metering device; the concentration device includes a cylinder 1, an upper cover 2, a one-way valve device and a cylinder screen 10; the metering device includes a connecting rod 11, a positioning rod 12, a slow down Device 13, volume locator 15, base 16, hook 17, weight 18.

[0039] The bottom of the cylinder 1 is an open structure, and the top cover 2 is provided with a magnet 4, the magnetic force of the magnet 4 can offset the weight of the entire concentration device; the one-way valve device is located on the cylinder 1 The lower part of the interior, the cylinder screen 10 covers the bottom of the cylinder 1; the outer surface of the cylinder 1 is provided with a cylinder scale line 5, and the scale value of the cylinder scale line 5 is from the bottom It increases upwards, and its 0 o'clock position is at the s...

Embodiment 2

[0061] This embodiment provides a method for using the in-situ concentration device for phytoplankton samples described in Embodiment 1, the specific process is as follows:

[0062] According to the precipitation situation at the bottom of the sample vial, and according to experience to estimate the concentrated volume, fix the volume locator on the positioning rod corresponding to the position of the positioning rod scale (this position is the expected concentration end scale);

[0063] Connect the slow-down device to the positioning rod and make its lower end stay at the zero position of the positioning rod scale (in actual use, other suitable starting scale positions can be determined according to the height of the sample bottle to be concentrated).

[0064] Connect the connecting rod to the positioning rod, and according to the weight of the enrichment device, choose a suitable weight to hang on the hook so that the connecting rod can be balanced, then attach one end of the...

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Abstract

The invention discloses an in-situ concentration device and method for a phytoplankton sample. The device comprises a concentration device and a metering device, the concentration device comprises a cylinder body, a one-way valve device and cylinder body bolting silk; the metering device comprises a connecting rod, a positioning rod, a slow descending device, a volume positioner, a base and a weight. By utilizing the device and method, in-situ concentration can be directly realized in the sample bottle, the problem that the density of the sample is inevitably changed because the sample needs to be poured into a concentration device and then transferred out after being concentrated by other devices is solved, and the loss of the sample and the error are fundamentally reduced.

Description

technical field [0001] The invention relates to the technical field of quantitative devices for phytoplankton samples, in particular to an in-situ concentration device and method for phytoplankton samples. Background technique [0002] According to the marine monitoring specification (GB17378.7-2007) and the marine survey specification (GB12763.6-2007), when the phytoplankton (small and micro plankton) collected by nets and water are used for quantitative observation and counting, if the concentrated counting method is used , it is necessary to concentrate the sample to a small volume, shake it well, take a small amount of concentrated sample for observation, identification and counting, and finally combine the concentrated volume and counted volume to calculate the phytoplankton in the station represented by the sample and the nearby sea area. biological density. [0003] The traditional method is to use a straw wrapped with a sieve to directly or siphon the supernatant fr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/40
CPCG01N1/40G01N1/405Y02P60/21
Inventor 刘霜张继民潘玉龙周艳荣
Owner NORTH CHINA SEA ENVIRONMENTAL MONITORING CENT OF STATE OCEANIC ADMINISTATION
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