What selenium-enriched areas are there in China?

Enshi, Hubei 1

1980, the geological department further confirmed that the exposed area of selenium-containing carbonaceous shale in Enshi City is 850 square kilometers, and the reserves of selenium deposits are more than 5 billion tons. The Shuanghe Yutangba selenium deposit in Xintang Township is called "the rare and only independent industrial selenium deposit in the world", which fills the gap that there is no independent selenium deposit in the world. Enshi is a "world biological selenium bank", with many kinds of selenium-enriched biological resources and high selenium content, which is rare in the world.

2. Anhui Shitai

Known as one of the three selenium-rich villages in China, it is a big mountain village in Xianyu Mountain, Shitai, Anhui Province. Professors and experts from China University of Science and Technology once tested the contents of trace elements in the soil, and found that the selenium content in the soil where Dashan Village is located is between Enshi, Hubei Province and Ziyang, Shaanxi Province, which is rare in China.

3. Ziyang in Shaanxi Province

Ziyang County is a famous research and development base of selenium-enriched biological resources in China. Animals and plants growing in Ziyang are natural carriers of organic selenium, and the development of selenium-enriched edible beverages has a good resource base.

4. Yichun in Jiangxi Province

Mingyueshan hot spring is a rare selenium-enriched hot spring at home and abroad. It is distributed within 0.8 square kilometers of Wentang Town at the foot of Mingyue Mountain. The water temperature is kept at 68℃~72℃ all the year round. Colorless and tasteless, it can be drunk and bathed. The water quality is good and does not contain sulfur. It contains nearly 20 kinds of trace elements which are very beneficial to human body.

5. Fenghua Zhejiang

Lengxi Village, located in the southeast of Shangtian Town, is located at the foot of Changshou Mountain. The soil is rich in selenium, and the mild and humid climate and beautiful scenery make it ecologically livable.

6. Sichuan Wanyuan

Wanyuan City is a big tea-producing county in Sichuan Province. The soil is rich in selenium and has the special quality of alpine tea.

7. Peace in Qinghai

The area of selenium-enriched soil in Ping 'an District has reached more than 600 square kilometers, and the average selenium content is 0.44mg/kg, which is higher than the national soil background value. Thick soil layer and moderate selenium content are suitable for development and utilization, reaching sufficient or moderate selenium level.

8. Hunan Taoyuan

Selenium-poor soil with selenium content less than 0.4 mg/kg in Taoyuan County only accounts for 10% of the total area, about 660,000 mu. Selenium-enriched soil > 0.4 mg/kg accounts for 50% of the total area, reaching 3.3 million mu; The soil with high selenium content > 1 mg/kg is distributed in strips or spots in Niuchehe, Zhongjiapu, Ligonggang, Cannongji, Shi Jiao, Cha 'anpu and Shaping, accounting for 3-5% of the total area, about 200,000 mu.

9. Yongfu in Guangxi

Yongfu County is rich in selenium, with 2 micrograms of selenium per kilogram of water and 0/.65,438+0 mg of selenium per kilogram of soil, which is 3.3 times of the national average (0.29 mg per kilogram).

Extended data

On the Function of Selenium

Selenium has a wide range of functions, as detailed below, but there are two main principles:

1, which constitutes an antioxidant enzyme in vivo, protects the cell membrane from oxidative damage and maintains its permeability;

2.Se -P protein has the function of chelating toxic substances such as heavy metals and reducing the toxicity of toxic substances.

Selenium is called "the king of cancer prevention" by scientists (formerly known as "the king of cancer prevention").

Scientific research has found that blood selenium level is closely related to the occurrence of cancer. A large number of survey data show that the selenium content in food and soil in an area is directly related to the incidence of cancer. For example, if the selenium content in food and soil in this area is high, the incidence and mortality of cancer will be low, otherwise, the incidence and mortality of cancer in this area will be high. Facts show that selenium is closely related to the occurrence of cancer. At the same time, the scientific community also recognizes that selenium has anti-cancer function and is the "king of anti-cancer" among trace elements in human body.

References:

Baidu Encyclopedia: Selenium