According to media reports, the earliest news of "foot smelly salt" appeared in March this year. At that time, Henan Pingdingshan Evening News interviewed the relevant person in charge of Shen Ying Salt Industry Co., Ltd. in Pingdingshan, Henan Province, explaining that salt contains butyric acid, which is beneficial to human stomach and intestines, and the manufacturer did not remove butyric acid from rock salt in the production process. Subsequently, the local salt industry department did not know whether butyric acid should be eliminated.
Since then, the "foot odor salt" produced by Shen Ying Salt Industry in Pingdingshan, Henan Province has appeared in Fuyang, Tai 'an and Laiwu, Anhui Province, Haimen, Xinyu and Nanchang, Jiangsu Province, and the iodized refined iodized salt produced by Zhongyan Long Hao Salt Chemical Co., Ltd. has a similar taste in Xinyu. Since then, relevant local functional departments have sealed these salts.
Official website information shows that Pingdingshan Shen Ying Salt Industry Co., Ltd., established in 1994, has the right to exploit1500,000 tons of high-purity wells to exploit salt resources. It is a comprehensive enterprise integrating salt making, salt product processing and sales, and a national designated salt production enterprise with the qualification of salt wholesale license. The main products are: edible salt, industrial salt, washing salt, process salt, soda ash, ammonium chloride and so on. Products are sold to China and more than 30 provinces and cities in Southeast Asia.
Zhongyan Long Hao Salt Chemical Co., Ltd. is the largest fixed-point salt producer in China and one of the largest well, mine and salt producers in China. It is controlled by China National Salt Industry Corporation, with Henan Salt Industry Company as a shareholder. Located in the east section of Yancheng Road, Ye County, Pingdingshan City, Henan Province, with total assets of 900 million yuan. The products mainly include refined iodized salt, green edible salt, monosodium glutamate salt, industrial salt, fruit and vegetable washing salt, bath salt, potassium iodate and so on.
People in the salt industry said that hydrogen sulfide can also produce similar "foot odor". The source said that salt can be divided into "sea salt" and "rock salt". Most of the well mineral salts are mined by drilling with water solution. Salt water is produced by drilling and water-soluble mineral salts. In this process, when the hydrogen sulfide gas leaked from the rock fault is dissolved into the brine, it is easy to bring the primary hydrogen sulfide into the vacuum salt making process if the operation in the brine treatment process is not in place. "Hydrogen sulfide is a colorless gas that smells like rotten eggs, and the' foot odor' contained in salt products comes from this."
It is understood that hydrogen sulfide is a colorless gas which is irritating and suffocating. Low-concentration exposure only has local irritation to respiratory tract and eyes, while high-concentration exposure has obvious systemic effects, showing symptoms of central nervous system and asphyxia. Hydrogen sulfide has a "rotten egg-like" smell, but its extremely high concentration will soon cause olfactory fatigue without realizing its taste.
In addition, the "foot odor salt" found in Gansu was sent to the third-party testing agency Nanjing Salt Industry Quality Supervision and Inspection Station in Jiangsu Province for testing, and it was found that the batch of salt products sent for inspection contained toxic and harmful component nitrite.
Although there are no specific test results in various places at present, the salt industry staff in the above areas all said that from the sensory point of view of salt alone, an odor is an unqualified product. But what causes the "foot odor" remains to be tested by authoritative departments.
First, we can pay due attention to salt-producing areas. For example, most people in Shandong eat sea salt, which is rock salt. It is the rock salt with "smelly feet" mentioned above.
Second, rock salt will stink when heated. Although there is no difference in appearance, if it is rubbed or heated by hand, there will be a smell, which can be identified by this method.
If there is a problem with the salt products around you, citizens can call the salt law enforcement department to report complaints.