Chemical analysis refers to a type of analytical method that uses the chemical reaction and its quantitative relationship to determine the composition and content of the measured substances. Chemical reagents, balances, and some glassware are required for the assay.
Instrumental analysis (modern analytical or physical analysis): An analytical method based on physical or physicochemical properties of matter. This kind of method usually measures the physical quantity such as optics, electricity, magnetism, sound, heat,etc. and obtains the analysis result, and measure these physical quantities, generally need to use more complicated or special apparatus and equipment, so call "the instrument analysis". Instrumental analysis can be used not only for qualitative and quantitative analysis, but also for structural, valence, state analysis, micro and thin layer analysis, micro and ultra-trace analysis, etc. It is the direction of analytical chemistry.
Compared to chemical analysis, instrument analysis has the following characteristics:
1. L level, even lower. Suitable for the determination of trace, trace and ultra trace components. High sensitivity, detection limit can be reduced. For example, the amount of sample was reduced from the chemical analysis of mL, mg to instrumental analysis of 2. Selectivity is good. Many instrument analysis methods can select or adjust the measurement conditions so that the coexistent components do not interfere with each other.
3. Easy to operate, fast analysis, easy to automate.
4. The relative error is relatively large. Chemical analysis can generally be used for constant and high-content analysis, with a high degree of accuracy, with errors less than a few thousandths. The relative error of most instrumental analysis is relatively large, generally 5%, not suitable for constant and high-content analysis.
5. Instrumental analysis requires expensive instruments and medical instruments.
The two are the same:
1, can be used as qualitative and quantitative analysis methods. Chemical analysis can generally be used for constant and high-content analysis, with a high degree of accuracy, with errors less than a few thousandths. The relative error of most instrumental analysis is relatively large, generally 5%, not suitable for constant and high-content analysis.
2, the same principle of analysis.
Instrumental analysis (modern analytical or physical analysis): An analytical method based on physical or physicochemical properties of matter. This kind of method usually measures the physical quantity such as optics, electricity, magnetism, sound, heat,etc. and obtains the analysis result, and measure these physical quantities, generally need to use more complicated or special apparatus and equipment, so call "the instrument analysis". Instrumental analysis can be used not only for qualitative and quantitative analysis, but also for structural, valence, state analysis, micro and thin layer analysis, micro and ultra-trace analysis, etc. It is the direction of analytical chemistry.
Compared to chemical analysis, instrument analysis has the following characteristics:
1. L level, even lower. Suitable for the determination of trace, trace and ultra trace components. High sensitivity, detection limit can be reduced. For example, the amount of sample was reduced from the chemical analysis of mL, mg to instrumental analysis of 2. Selectivity is good. Many instrument analysis methods can select or adjust the measurement conditions so that the coexistent components do not interfere with each other.
3. Easy to operate, fast analysis, easy to automate.
4. The relative error is relatively large. Chemical analysis can generally be used for constant and high-content analysis, with a high degree of accuracy, with errors less than a few thousandths. The relative error of most instrumental analysis is relatively large, generally 5%, not suitable for constant and high-content analysis.
5. Instrumental analysis requires expensive instruments and medical instruments.
The two are the same:
1, can be used as qualitative and quantitative analysis methods. Chemical analysis can generally be used for constant and high-content analysis, with a high degree of accuracy, with errors less than a few thousandths. The relative error of most instrumental analysis is relatively large, generally 5%, not suitable for constant and high-content analysis.
2, the same principle of analysis.
Acrylic Bottle,New Design Acrylic Bottles,30Ml Acrylic Bottles,Diamond Shaped Packaging Bottles
Zhejiang Xinlei Packaging.Co.Ltd.(China) , https://www.xinleipack.com