What are the analytical instruments and what are the chemical analysis instruments?

Analytical instruments belong to one of the main branches of scientific instruments, with a wide range of types, including optical analysis instruments, electrochemical analysis instruments, chromatography analysis instruments, mass spectrometry analysis instruments, magnetic analysis instruments, thermal analysis instruments, physical property analysis instruments, nuclear analysis instruments, etc.

The chemical analysis instruments are:

1. Burette.

Refers to a measuring device that holds a titrant solution during a titration operation. The burette is a slender, graduated glass tube with uniform inner diameter, with a glass tip at the lower end of the tube, and different volumes such as 25 ml and 50 ml.

2. Pipette.

A measuring device used to accurately pipette a certain volume of solution. A pipette is a measuring instrument that is used only to measure the volume of the solution it is expelling.

3. a volumetric flask.

It is a thin-necked, pear-shaped, flat-bottomed volumetric device with a grinding glass plug and a reticle on the neck, indicating that the volume of the solution is exactly equal to the volume marked on the bottle when the concave surface of the liquid at the indicated temperature is tangent to the reticle at the bottleneck of the volume. Volumetric flasks are marked with temperature, volume, and scale marks.

4. Balance: It is a kind of equal-arm lever, which is an instrument to measure the mass of an object. According to the principle of leverage.

It is made, there is a small plate at each end of the lever, a weight is placed at one end, and the object to be weighed is placed at the other end, and the lever ** is equipped with a pointer, and when the two ends are balanced, the mass of both ends is equal.

5. a graduated cylinder. It is a glass instrument used to measure liquids. Specifications are expressed in terms of the maximum capacity of the energy used.

The main analysis methods of modern instrumental analysis are: 1. Optical analysis method: 1) atomic spectroscopy (atomic emission spectrometry; Atomic absorption spectrometry; atomic fluorescence spectrometry); 2) Molecular spectroscopy (UV spectrophotometry; visible spectrophotometry; infrared spectrophotometry); 2. Electrochemical analysis:

1) conductivity analysis; 2) potential analysis;

There are many ways to do this. You'd better consult your university doctoral supervisor!

Instrumental analysis is an analytical method that uses more special instruments, and is an analytical method based on the physical or physicochemical properties of a substance. According to a certain physical properties of a substance, such as relative density, phase transition temperature, refractive index, optical rotation and spectral characteristics, etc., the method of direct qualitative, quantitative, structural and morphological analysis without chemical reaction is called physical analysis method, such as spectral analysis. According to a certain physical property of a substance in chemical changes, the method of qualitative or quantitative analysis is called physicochemical analysis, such as potentiometric analysis, etc.

The instrumental analysis method has the characteristics of sensitivity, rapidity and accuracy, and has developed rapidly and is widely used. It mainly includes electrochemical analysis, optical analysis, mass spectrometry, chromatography, radiochemical analysis, etc. The instrumental analysis methods commonly used in forensic toxicology analysis include spectroscopic analysis, chromatography analysis and chromatography-mass chromatography-mass mass spectrometry analysis, and the latter two have good separation and qualitative and quantitative analysis efficiency.

Common analytical instruments are as follows:

Titration analyzer Li Juyan device: including burette, pipette, pipette, pipette, beaker, etc. Gravimetric Instruments:

Including pallet balances, thermal gravimetric analyzers, and more. Photometric analysis instruments: including flame photometric analyzers, answering spectrophotometric instruments, etc.

Electrochemical silver analysis instruments: acidity meter, conductivity meter, etc.

1. Titration analysis instruments: including burettes, pipettes, pipettes, pipettes, beakers, etc.

2. Gravimetric analysis instruments: including pallet balances, thermal gravimetric analyzers, etc.

3. Photometric analysis instruments: including flame photometric analyzers, spectrophotometric instruments, etc. Electrochemical analysis instruments: acidity meter, conductivity meter, etc.

4. Analytical instruments are widely used in chemistry, chemical industry, materials, environment, geology, energy, medicine, criminal investigation, life science, medicine and other fields.