Exposure tank for animal inhalation exposure experiment and exposure device

Abstract

The invention provides an exposure box for an animal inhalation exposure experiment and an exposure device, and belongs to the technical field of toxicological test equipment. In the exposure box, a box body is divided into an animal exposure zone and a flow diversion zone through a movable inserting plate; an air inlet and a mist inlet are respectively formed in the side wall of the tank body which is located at one side of the flow diversion zone; flow diversion plates in layered arrangement are fixedly arranged at the upper part, which is located at one side of the flow diversion zone, of the movable inserting plate; the flow diversion plates are used for forming an S-shaped runner and fully diluting and mixing dry current-carrying air and water mist entering through the air inlet and the mist inlet, and mixed air can be introduced to the animal exposure zone through multiple ventilating holes uniformly formed in the lower part of the movable inserting plate; multiple air vents arerespectively formed in the side wall of the tank body which is located at one side of the animal exposure zone. The exposure device comprises the exposure box for the animal inhalation exposure experiment, an air pump, a medical atomizer and a temperature-humidity meter. The exposure box provided by the invention is simple in structure and lower in cost, is capable of experimentally simulating a real effect of environmental water mist exposure and is capable of carrying out multiple groups of experiments at the same time.

Description

technical field [0001] The invention belongs to the technical field of toxicology experimental equipment, in particular to an exposure box and an exposure device for animal inhalation poisoning experiments. Background technique [0002] Water-based pollutants can be exposed to the human body through ingestion, inhalation, and skin. Among them, inhalation exposure is relatively small and the exposure method is complicated, so there are few studies. However, due to the serious shortage of water resources, it is an inevitable trend to reuse treated sewage as reclaimed water. The utilization rate of recycled water is increasing year by year, and it is widely used in various ways such as agricultural irrigation, car washing, toilet flushing, landscape water and river supplementation. Reclaimed water will be aerosolized to varying degrees during the above-mentioned utilization process, and there may be health risks after being inhaled by the human body. Existing studies have sho...

AI Technical Summary

Problems solved by technology

[0004] One type is a commercial integrated product, which integrates computer control system, air treatment system and exposure function unit in a large cabinet, which can automatically adjust exposure parameters (temperature, air pressure, aerosol concentration, etc.), but its price is very expensive (Each unit costs hundreds of thousands of RMB), too large, takes up a lot of space in the laboratory and is not easy to move, only one water sample can be used for exposure at a time, and it takes a long time to clean the pipeline after exposure And the cabinet; and, each exposure experiment often needs to fix the parameters, and the computer's precise control of the parameters not only occupies the space of the cabinet, but also makes the overall price of the product high, but it is not necessary

[0005] Another type of exposure device is a simple box without a diversion area. The atomized water sample directly enters the animal exposure area in the form of high-concentration water mist, and it is still in the state of small droplets in the form of white mist. Animals lick their mouths to increase dietary exposure, which is quite different from the actual exposure to gaseous water, and excessive humidity will increase animal discomfort

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