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College Chemistry Laboratory Planning and Design Requirements

Sep 18, 2018

The chemical laboratory is a space with a certain risk factor. The experiment uses some reagents such as acid, alkali and organic solvent; glassware such as test tubes, flasks, beakers, and condenser tubes; atomic absorption, gas chromatography, liquid chromatography, and ultraviolet spectrophotometry. Such as precision instruments and high temperature equipment such as ovens and muffle furnaces. The planning and design of the laboratory must be based on “practical and safe”, comprehensively consider the safe operation requirements of various instruments and equipment, and configure the corresponding experimental equipment.

 

(1) General and Analytical Chemistry Laboratory

 

General and Analytical Chemistry laboratories conduct research experiments including mixing, heating, cooling, distillation, evaporation, dilution, and reaction of chemicals. These operations can be performed on an open bench or in a fume hood, and analytical equipment such as a spectrophotometer is required. Gas, liquid chromatographs, etc., analytical chemistry laboratories often use some hazardous materials, including highly toxic, volatile liquids, powders, pressurized flammable gases. Although the toxic substance analysis process can be decomposed into non-toxic synthetic compounds, it is still toxic in analytical operations. It is generally not recommended to analyze chemical laboratory operations for extremely toxic chemicals such as carcinogenic, deadly explosive and other chemicals and higher radioactive materials. Wait.

 

Configuration of experimental equipment: side table, central station (sink, reagent rack), fume hood, medicine cabinet, utensil cabinet, reflux condensing device (small water cup and water gram), suction filter device (pumping faucet, small water cup slot).

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(2) Organic Chemistry Laboratory

 

The organic chemistry laboratory conducts research experiments including general organic matter analysis (quantitative analysis and qualitative analysis, drug testing (content determination and identification, pesticide residue determination) 666 DDT pesticide residues, pyrethroid pesticide residues, organic nitrogen pesticide residues, organophosphorus pesticides Residue, gas analysis (analysis of artificial gas components, composition analysis of natural gas, analysis of liquefied petroleum gas composition), determination of harmful substances (benzopyrene, polycyclic aromatic hydrocarbons, aflatoxin), identification of unknowns in infrared spectrum, identification of unknown mass spectrometry Detecting samples (water, food, blood samples), etc. The organic laboratory has large-scale instruments and supporting facilities such as high-performance liquid chromatography, gas chromatography, thin-layer scanners, elemental analyzers, nuclear magnetic resonance instruments, and infrared absorption spectrometers.

 

Configuration of experimental equipment: side table, central station, central bench overall ventilation cover, medicine cabinet, utensil cabinet, reflux condensing device (small water cup and water copying), suction filter device (pumping faucet, small water cup slot).

 

(3) Inorganic Chemistry Laboratory

 

Inorganic chemistry laboratory engaged in research experiments including quantitative analysis of heavy metals (lead, cadmium, mercury, arsenic, etc.), including environmental, food, biological, Chinese herbal medicines and other types of samples, qualitative and quantitative analysis of common trace metals, such as: Fe, Cu, Ca, K, Mg, Mn, Zn, Li, Mo, Sr, Co, etc., trace precious metal elements (Au, Ag, Pt) and trace metal elements (such as: Tl), non-metals and their compounds (such as: Se , B, P, N, NO2-, NO3-, F-, Cl-, SO42-, etc.), various items for capacity analysis, analysis of Chinese herbal medicines and Chinese medicines, analysis of food nutrients (eg carbohydrates, Analysis of physical indicators such as starch, fat, cellulose, etc. (such as density, melting point, refractive index, optical rotation, PH value, moisture, etc.), and various physical and chemical indicators of inorganic chemical reagents. The inorganic laboratory has large imported precision instruments such as atomic absorption spectrometer, ultraviolet spectrometer, fluorescence spectrometer, inductively coupled plasma atomic emission spectrometer and ion chromatograph, which can undertake the analysis and testing of most inorganic projects.

Configuration of experimental equipment: side table, central station (sink, reagent rack), fume hood, medicine cabinet, utensil cabinet, suction filter device (pumping faucet, small water cup slot