[ Instrument Network Instrument R & D ] China ’s first 4500-meter deep-sea tracer in-situ fluorescence sensor engineering prototype was jointly developed by the research team of micro-analytical instruments led by Guan Yafeng, researcher of the Dalian Institute of Chemical Technology of the Chinese Academy of Sciences, and associate researcher Geng Xuhui. On the 18th, the sea trial was successful, and the Dalian Institute of Chemical Technology recently received the equipment participation certificate.
In the Deep Sea Warrior / Exploration One Southwest / Central Indian Ocean TS10-03 scientific research voyage, the engineering prototype was equipped with the "Deep Sea Warrior" manned submersible SY145 submarine submarine test for a maximum test depth of 2450 meters. This instrument is China's first fluorescence sensor for in-situ detection in the deep ocean. Its successful research and development will enhance the contour and distribution range of target flows in the deep ocean, including the ability to detect cold spring and hydrothermal plume diffusion. It has important science value.
Based on the years of academic accumulation of the Dalian Institute of Chemical Research's micro-analytical instrument research group in highly sensitive fluorescent detectors, the instrument has further improved the detection sensitivity, and the detection sensitivity is comparable to the international level. In addition, under deep sea conditions, the instrument faces extreme conditions such as high pressure (about 245 atmospheres), which places stringent requirements on the performance of the sensor. The team cooperated with the Deep Sea Institute of the Chinese Academy of Sciences. Through scientific design and repeated verification, the team successfully developed an in-situ fluorescence sensor that meets the extreme conditions of the deep sea.
This project is a sub-project of the Chinese Academy of Sciences' strategic Class A pilot project "Deep Ocean / Abyss Intelligent Technology and Undersea In-situ Scientific Experimental Station". Dalian Institute of Chemical Technology is responsible for the development of deep-sea in-situ organic component gas chromatography-mass spectrometry and fluorescence sensors. (Text / Photo by Geng Xuhui)
Compound Fertilizer
Compound fertilizers are chemical
fertilizers made by chemical methods or/and mixed methods containing any two or
three of the nutrient elements of crops, nitrogen, phosphorus and potassium.
Its role is to meet the comprehensive needs and balance of multiple nutrients
needed by agriculture under different production conditions. It is widely used
in modern agriculture.
Due to the needs of agriculture, compound fertilizers, especially high-concentration compound fertilizers, are an inevitable trend in the development of Chemical Fertilizer varieties. The early fertilizer industry in most countries was dominated by fertilizers in the production unit (fertilizers containing a nutrient). With the development of soil fertilizer science and agricultural fertilization technology, agriculture has moved towards scientific fertilization. Scientific fertilization must be based on different soil types and properties, fertility levels, crop types and climatic conditions and other factors to determine the variety and quantity of fertilizer, so that the excessive application or shortage of one or more nutrients in the soil and waste.
The content of each nutrient element of the compound fertilizer is generally expressed in the corresponding percentage of N–P2O5-K2O, and its sum is the concentration of the fertilizer. According to Chinese standards, the total content of 25% to 30% is a low concentration, 30% to 40% is a medium concentration, and more than 40% is a high concentration compound fertilizer. Compound fertilizers can evenly supply several nutrients to crops at the same time, so as to give full play to the mutual promotion of nutrients. Because of its different production processes, it can be divided into three categories: compound fertilizer, compound fertilizer and mixed compound fertilizer.
Fertilizer Industry,Agricultural Fertilization,Scientific Fertilization,The Compound Fertilisers
WUHAN RUISUNNY CHEMICAL CO. LTD , https://www.ruisunny-chem.com