You may have always wondered what zinc was. You may have seen it on the backs of many food products. However, have you ever wondered what it is and what is it used for?
To begin with the basic facts about zinc, you must know that zinc is an element itself. Its chemical symbol is Zn, and its atomic number is 30. Zinc comes with 30 protons and electrons, and 35 neutrons. It has a 65.37 g.mol-1, and it has a density of 7.11 g.cm-3 at 20oC. Zinc melts at 420oC and boils at 907oC. It has a Vanderwaals radius of 0.138 nm and an ionic radius of 0.074 nm (+2). It has 10 isotopes, and it was discovered by Andreas Marggraf in 1746. Zinc is usually brittle and crystalline at ordinary temperatures, but it becomes more ductile and malleable when heated between 110oC and 150oC. It will combine with oxygen and non-metals, and it will also react with dilute acids to produce hydrogen. (Lenntech)
Zinc also has various applications. It is often used for galvanizing iron (50% of all zinc produced will go into this and while in its metal state), however, it is also used in the preparation of certain alloys, it is the negative plate in some electric batteries, roofing and gutters in building construction, the metal in U.S. pennies, and die casting in the automobile industry. It is also believed that zinc possesses anti-oxidant properties, which protect against premature aging of the muscles in the body. (Lenntech)
Zinc oxide is also used for many things, such as white colors in paint, and an activator in the rubber industry. In its pigment form, it can serve as various plastics, cosmetics, photocopier paper, wallpaper, and printing. (Lenntech)
Zinc is placed in a lot of things. It is commonly found greatly in vegetables, meats, and even chocolate! It is often found in drinking water, and is exposed to it even more when it is placed inside of a metal tank. (Healthaliciousness) Industrial and toxic wastes can cause zinc to get to such a high level that it is dangerous. (Lenntech)
Zinc is not only found in water, but also air and soil. The levels of zinc are rising unnaturally, and likely due through human activity. Some soils are now heavily contaminated with the zinc, and these are found where the zinc has to be mined. A huge increase in zinc could also be caused from sewage from various industries. (Lenntech)
If zinc heavily pollutes water, fish can absorb these large amounts, and be harmed in the process. Various animals can also be affected by the water by even just drinking it. (Lenntech)
Soils are not safe either. This is why plants are a rare thing to see near a factory. Not only does this affect plants, but it also affects earthworms and microorganisms as well. (Lenntech)
There are many types of zinc ores, including hemimorphite, smithsonite, sphalerite (commonly known as blende), and wurzite. These ores are mainly mined from Australia, Canada, Peru, Russia, and as well as U.S. Mainly these countries, but a few others produce about 7 million tons a year. (Lenntech)
Zinc is percepted as good and healthy thing, mainly because it is a mineral. However, this is not true when in large amounts. However, too little is also bad too. People must find a healthy medium.
When people do not get enough zinc, they can get a loss of appetite, decreased sense of smell and taste, slow healing, and/or even birth defects! (Lenntech)
It takes a truly enormous amount of zinc for it to be too much, but it is possible to get too much of it. This can cause anaemia, nausea, skin irritations, stomach cramps, and vomiting. An extremely high amount of zinc can even damage the pancreas, it can cause a decrease protein metabolism, can cause arteriosclerosis, and being exposed to it can cause respiratory disorders. (Lenntech)
So, in conclusion, zinc is a sensitive. We can’t survive without it, and we can’t survive with too much of it. Without it, we would get sick. With too much of it, we will get sick.
Works Cited
Healthaliciousness. “Top 10 Foods Highest in Zinc.” 2013. http://www.healthaliciousness.com. https://www.healthaliciousness.com/articles/zinc.php. 30 September 2013.
Lenntech. “Zinc-Zn.” 2013. http://www.lenntech.com. https://www.lentech.com/periodic/elements/zn.htm. 30 September 2013.