Glass is a kind of glass that we all use. Because it is transparent, we will also feel convenient when drinking water. Whether the water inside contains garbage or whether the water quality is dirty can be seen clearly, which makes consumers feel more relieved when drinking water. However, we have also seen news in many places that some glasses are toxic. Is it really toxic? Glass manufacturers to tell you.
(1) Crystal glass. There are mainly two kinds of crystal glasses on the market: natural crystal glasses and artificial crystal glasses. The natural crystal glass is made of silicon dioxide and contains no or very low lead. It is generally a high-grade product. This kind of crystal glass is expensive. The common crystal glasses on the market are basically made of artificial crystal. They are cheap, but the content of lead oxide is as high as 24%. When the lead in the blood accumulates to a certain concentration, it will cause the decline of human memory and intelligence, mental disorders, nightmares, insomnia and other symptoms.
(2) A glass coated with paint. Although colorful glasses are very pleasing to the eye and make people happy, beautiful things are not necessarily beautiful. This kind of glass coated with pigment often contains harmful or even highly toxic elements, such as heavy metals such as lead, chromium, cadmium, nickel, copper and manganese, as well as non metals such as arsenic, fluorine, chlorine and sulfur. In the process of industrial production, these elements will be released and gasified, polluting the atmosphere and water sources, resulting in harm to human beings.
For example, cadmium will stimulate the respiratory tract. Long term exposure will cause anosmia, gingival macula or gradual yellow circle. Cadmium compounds are not easy to be absorbed by the intestine, but can be absorbed by the body through respiration, and accumulate in the liver or kidney, causing harm, especially to the kidney. It can also lead to osteoporosis and softening.