| Topic |
Author |
Posted On |
| The Impact and Detection of Veterinary Drug Residues in Animal Products |
alfachemistry36@gmail.com |
3 days, 18 hours ago |
Residue may be defined as trace of a substance present in a matrix (e.g., meat, urine, etc.) after some kinds of administration (e.g., within the framework of veterinary practice or illegal use) to an animal. [1] Veterinary drugs play an important role in the prevention and treatment of animal diseases, increasing production efficiency and improving the quality of animal products. They are widely used in animal husbandry production and have become an indispensable material basis for modern animal husbandry. However, there are always some people who illegally use, abuse, illegally add, inject other veterinary drugs or harmful substances in the livestock and poultry industry for the pursuit of economic interests. The drugs that are more likely to cause excessive Veterinary Drug Residue are mainly antibiotics, sulfonamides, furans, antiparasitics, hormones and β-agonists. When the antibiotics are frequently used in large quantities, the drug-resistant pathogens in the animal body can easily infect humans. And the antibiotic drug residues can cause the bacteria in the human body to develop drug resistance and disturb the human micro-ecology, resulting in various side effects. Residues of veterinary drugs and harmful substances affect the safety of animal foods and the sustainable development of animal husbandry, which directly endanger human health and life safety. Therefore, it is necessary to detect veterinary drug residues and harmful substances in animal foods.
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| CIGS Nanoparticles: The Future of Thin-Film Solar Cells |
alfachemistry36@gmail.com |
4 days ago |
Copper indium gallium selenide (Cu(In, Ga)Se2, or CIGS) nanoparticles as the absorber layer of high-efficiency thin-film solar cells have become one of the global photovoltaic research hotspots because of their low production cost, low pollution, and good low-light performance, etc. The photoelectric conversion efficiency of the CIGS solar cells is currently the highest among all kinds of thin-film solar cells, and it is regarded as the next generation of new and very promising thin-film solar cells. Although the current maximum efficiency has reached 23.35%, there are still many challenges to further improve the efficiency.
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| Characteristics and Oxidizing Properties of Potassium Ferrate |
alfachemistry36@gmail.com |
4 days, 2 hours ago |
| Pure potassium ferrate is a dark purple shiny powder. It is stable in dry air below 198°C. It is very soluble in water to form a light purple-red solution. After standing, it will decompose and release oxygen, and precipitate hydrated iron oxide. The alkalinity of the solution increases with decomposition. It is quite stable in strong alkaline solutions and is an excellent oxidant. It has a highly efficient disinfection effect. It has stronger oxidizing properties than Potassium Ferrate. The iron in potassium ferrate is +6 valent iron, which is different from the +2 or +3 valent state of general iron elements. It has strong oxidizing activity in the entire pH range, and the oxidation potential can reach 2.20V. It can directly oxidize ammonia to nitrate, oxidize hydrogen sulfide to sulfate, and oxidize organic matter to carbon dioxide and water. It can both deodorize and detoxify. Since Fe(VI) in high iron does not directly transform into Fe3+ when it decomposes in water, but undergoes the evolution of intermediate forms from hexavalent to trivalent ions with different charges, positive hydrolysis products will be produced during the transformation process. |
| The Role and Importance of Colorant Standards in Safety Analysis |
alfachemistry36@gmail.com |
4 days, 23 hours ago |
Colorant standard is a kind of reference material with high purity, which has been widely used in the analysis of food and cosmetic ingredients mainly to improve the color of products. However, the abuse of colorants, especially some prohibited colorants, has caused frequent food and cosmetic safety incidents, and more and more attention has been paid to the analysis of colorants. Therefore, Colorant standards are primarily applied to the analysis of colorants content in products.
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| What are the uses of Heavy-oxygen water? |
alfachemistry36@gmail.com |
4 days, 23 hours ago |
| Heavy-oxygen water is a chemical substance that is a colorless, odorless, and tasteless liquid. Although it shares many similarities with ordinary water, some of its physical properties are slightly different. This unique form of water is mainly used as a tracer in scientific research fields such as chemistry, biology, medicine, agriculture, and geology. For more detailed information, you can check out the heavy-oxygen water website. |
