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In ancient times, silver needle testing was a commonly used method of detecting poisons. However, modern science tells us that this method is not reliable. This article will explain in a scientific way whether the silver needle drug test is unreliable.
First, we need to understand the properties of silver. Silver is an active metal that can react with many chemicals. When silver comes into contact with toxic substances, they may undergo a chemical reaction that discolors the silver or produces precipitation. Therefore, it is believed that silver needles can detect poisons.
However, modern scientific studies have shown that this method is not reliable. First of all, silver needles can only detect poisons that contain silver ions. This means that only certain poisons can be detected by the silver needle. For other types of poisons, silver needles do not work.
Secondly, there are still some shortcomings in the silver needle drug test. For example, silver needles may react with certain substances, resulting in false-positive results. In addition, silver needles can also cause poisoning if used incorrectly. This is because silver reacts with oxygen in the air to form silver oxide, which is a toxic substance.
Therefore, from a scientific point of view, silver needle drug testing is not reliable. While in ancient times, this method may have been a useful tool, in modern society, we should adopt a more scientific approach to detecting poisons. For example, chemical reagents or biosensors can be used to detect poisons. These methods are more accurate and reliable, and can avoid the potential dangers of silver needle testing.
At present, food safety testing technology is quite mature, and the two main ones are chromatography and spectroscopy. Chromatographs can detect the presence of excessive additives or pesticide residues in food through color analysis, and can also quantify animal and plant proteins to determine the nutritional structure of food. The principle of spectroscopy is to use the relationship between different substances and their radiation energy to determine the structure of food, in addition to gene chip technology, molecular imprinting technology and so on. With these high-tech, not to mention poison, even if you put an extra spoonful of salt, you can measure it clearly.
However, although the silver needle cannot detect drugs, it can sterilize and disinfect. Scientists in the United States have done experiments to pass more than 7,000 E. coli sewage per milliliter for 3 hours. The electrode treatment showed that all E. coli died. Studies have shown that human immunity is closely related to the content of silver ions in the body, and the content of silver ions decreases by 0001%, the probability of acquiring various diseases will increase. In this way, it is not for nothing that the nobles of the ancient palace loved silver tableware.