Hazard of pesticide residues Pesticide residue refers to the phenomenon where pesticides, directly or indirectly, remain in grains, vegetables, fruits, livestock products, aquatic products, and soils and bodies of water after pesticides are applied in agricultural production. Bitumen Heating Storage Equipment Asphalt heating storage equipment is an important road construction equipment, mainly used to heat and store asphalt in order to carry out road construction and maintenance when needed. The equipment has the characteristics of high efficiency, safety and environmental protection, and can provide stable asphalt supply for road construction. Bitumen Heating Storage Equipment,Bitumen Tank Container,Gas Thermal Oil Heater,Asphalt Storage Tank Equipment BituRock Science & Technology (Jiangsu) CO., LTD , https://www.biturockequipment.com
Some of the currently used pesticides can be biodegraded into harmless ones in a relatively short period of time, while organochlorine pesticides including DDT are difficult to degrade, and are highly residual pesticides (see Organic Chlorine Pesticides). According to the residual characteristics, residual pesticides can be divided into three types: pesticides that are easily left in the plant body are called plant residual pesticides, such as 666, Endrin, etc.; pesticides that are easily left in the soil are called Soil residual pesticides, such as aldrin, dieldrin, etc.; soluble in water, and long-term residual pesticides in the water known as residual pesticides in water, such as endrin. There are two types of residual pesticides in plants, soils, and bodies of water: one is to maintain the original chemical structure; the other remains in the form of chemical conversion products or biodegradation products.
Pesticides that remain in the soil enter the plant through the plant's root system. The amount of pesticide residues in different plant organisms depends on their ability to absorb pesticides. The absorption of aldrin from different plants was as follows: peanut> soybean> oat> barley> corn. After pesticides are absorbed, the order of their distribution in plants is: root> stem> leaf> fruit.
The Pesticide Residue Tester can quickly detect pesticide residues in the sample. The sensitivity is high, and the minimum detection limit for pesticides such as methamidophos and dichlorvos is better than the national standard.
Asphalt heating storage equipment is mainly composed of heating device, storage tank and control system. The heating unit uses oil or gas burners to transfer heat to the asphalt to heat it to the proper temperature. Storage tanks are large containers used to store heated asphalt, generally made of high-temperature resistant materials. The control system is responsible for monitoring the operating status of the equipment and the temperature of the asphalt to ensure the safe and stable operation of the equipment.
The heating principle of asphalt heating storage equipment is to transfer heat to asphalt through thermal conduction, so that it is heated. Heating devices are generally divided into direct heating and indirect heating in two ways. Direct heating is the use of the burner directly into the storage tank, hot air through the contact of hot air with the asphalt to heat it. Indirect heating is the use of heat exchangers to heat the asphalt in the storage tank without direct contact with the air. The two heating methods have advantages and disadvantages, and need to be selected according to the actual situation.
Asphalt heating storage equipment heating speed, can quickly heat asphalt to the use of temperature, improve production efficiency. At the same time, the equipment also has environmental protection characteristics, reducing exhaust gas and smoke emissions, reducing the impact on the environment. In addition, the operation of asphalt heating storage equipment is simple and easy to maintain, which can meet the needs of various road construction and maintenance projects.
In short, asphalt heating storage equipment is an important road construction equipment, with high efficiency, safety, environmental protection and other characteristics. It can provide a stable supply of asphalt for road construction, improve construction efficiency, reduce the impact on the environment and waste of resources. The equipment has a wide application prospect in the field of road construction.