更新时间:2025-04-14浏览量:15
Firstly, Hanyang University hydrofluoric acid explosion accident
A hydrofluoric acid explosion occurred in a laboratory on the third floor of the New Materials Engineering Hall at Hanyang University's Seoul campus, injuring four students and severely damaging experimental equipment. Fortunately, hydrofluoric acid did not leak out and did not cause secondary pollution.
According to the preliminary investigation, the explosion occurred during the routine experiment, and the specific cause is still being verified. Hydrofluoric acid, as a highly toxic and strong corrosion agent, has a very high safety management requirement in the whole process. The accident directly exposed the failure of the implementation of the experimental operating standards, and further reflected the major omissions in the laboratory safety training and supervision mechanism. Public opinion has questioned whether the school's daily safety training and supervision are in place. The school issued a statement in the early morning of the 9th, expressing deep condolences to the injured students and their families, promising to fully cooperate with the investigation and re-evaluate laboratory safety protocols.
Secondly, the characteristics and hazards of hydrofluoric acid
Hydrofluoric acid is an aqueous solution of hydrogen fluoride gas, usually a colorless, transparent and irritating smoky liquid.
(1) Explosive reaction with metals and other substances: hydrofluoric acid itself is not combustible, but can react with most metals to produce hydrogen, resulting in an explosion; When H blowing agent burns immediately; Highly corrosive.
(2) Skin contact: After hydrofluoric acid contacts the skin, fluoride ions can quickly penetrate into the subcutaneous tissue, dissolve the cell membrane and cause tissue liquefaction and necrosis. Over time, fluoride ions can also combine with calcium ions in the body, causing hypocalcemia, which can lead to death in severe cases.
(3) Inhalation hazards: inhalation of hydrofluoric acid vapor can cause bronchitis, pneumonia and even pulmonary edema; High concentrations of vapor can cause severe respiratory damage.
(4) Eye contact: After high concentration of hydrofluoric acid contact with the eyes, it can quickly form a white pseudomembran-like turbidity, which may lead to corneal perforation if not treated in time.
(5) Corrosion of bones: hydrofluoric acid can penetrate directly into the human body through the skin to corrode bones. Fluoride ions combine with calcium and magnesium ions in tissues to form insoluble salt, which leads to tissue liquefaction necrosis and bone decalcification, and causes delayed severe pain in deep tissues.
Thirdly, safety protection measures
(1) Good ventilation: hydrofluoric acid must be operated in the fume hood.
(2) Goggles + face screen: Fully protected goggles and face screen must be worn.
(3) Protective gloves: Hands must wear heavy double layer (at least) rubber gloves. Make sure your hands do not come into direct contact with hydrofluoric acid. If gloves are contaminated with hydrofluoric acid, remove them immediately and wash hands thoroughly. Contaminated gloves should be specially disposed of and not thrown into the dustbin.
(4) Wear protective clothing: shorts and slippers are not allowed during the experiment; The lab coat shall be equipped with an anti-splash apron and shall be made of natural rubber, neoprene or fluorinated rubber.
(5) Emergency spray and eye washing device: the operation of hydrofluoric acid shall not be carried out alone; In the event of a burn, use emergency spray or eye wash immediately.
(6) Prepare emergency drugs: the first choice for emergency drugs is hexafluorin lotion; At a minimum, calcium gluconate gel should be available to ensure that all emergency medications are within their expiration dates and are regularly renewed.
(7) Receive formal medical treatment: In the event of a burning accident, seek medical attention immediately after the end of the emergency treatment and receive formal treatment.
(8) Skin contact: Immediately wash the affected area with hexafluorine, and remove contaminated clothing during the flushing process. If no hexafluorin lotion is available, rinse immediately with plenty of running water for at least 30 minutes while removing contaminated clothing; Apply 2.5% calcium gluconate ointment or treat with calcium gluconate solution; Seek immediate medical attention.
(9) Eye contact: Immediately rinse the eyes with a lot of running water, using 1% calcium gluconate and cortisone eye drops; Seek immediate medical attention.
(10) Inhalation: Immediately transfer the patient to fresh air, keep the airway clear, and carry out oxygen inhalation; Seek immediate medical attention.
(11) Ingestion: For poisoning caused by oral HF, the stomach can be washed within 30 minutes, and milk or other calcium, magnesium, aluminum solutions (such as calcium gluconate solution, diluted lime water, magnesium sulfate, etc.) can be given. If swallowed for more than one hour, gastric lavage should not be recommended, but calcium and magnesium preparations can still be given; Seek immediate medical attention.
Fourth, the Dianshi instrument for the safety of the experiment escort
South Korea's laboratory explosion sounded the alarm bell of the global scientific research community, in the journey of scientific research experiments, safety is the eternal theme. Dianshi instrument always puts the safety of experimenters in the first place in product design, adheres to the concept of "safety first", strictly adheres to the safety line, and makes safety awareness run through every design detail.
Whether it is a constant volume bomb for the detonation performance test, or a laboratory chamber for the battery safety performance test, it is equipped with advanced active protection. The overtemperature alarm system monitors the temperature change at all times, and once there is an anomaly, an alarm is issued immediately. The overpressure protection device can accurately sense pressure fluctuations and take timely measures to ensure the safety of experimental personnel and equipment. Choosing the Dianshi instrument is to choose a peace of mind, so that every experiment is safe and worry-free, so that the road of scientific research is steady.