Application of PH3 electrochemical sensor in the detection of concentration residue after phosphine fumigation

Gas detector kopen-The PH3 electrochemical sensor can be used to detect the concentration residue detection after phosphine fumigation. Phosphine gas is usually a colorless and odorless gas when it is pure. It is highly toxic to humans.

Its toxicity mainly acts on the human nervous system and inhibits the human nervous center. Under normal circumstances, the human body is inhaled from the respiratory tract. Phosphine gas is not absorbed through the skin.

The phosphine gas produced by metal phosphide (such as aluminum phosphide) tends to have acetylene or garlic-flavored gas (such as a small amount of acetylene), making it temporarily alert. Generally, a special odor can be smelled at 1.5～3ppm.

Phosphine is currently one of the most commonly used high-efficiency fumigation insecticides, which is mainly obtained by reacting aluminum phosphide or zinc phosphide with water. Phosphine is widely used in the fumigation and insecticide of food storage in warehouses, fur warehouses and cabins. If improper use, poor protection or accidental leakage occurs, it may cause acute poisoning to staff and even surrounding residents.

Gas detector kopen-My country stipulates that the highest allowable concentration of phosphine in the air in a working environment is 3mg/m3 (0.22mL/m3), which is equivalent to 2ppm. According to the GB 2715-2005 "Food Sanitation Standards", the maximum residue limit of phosphine in grains is not more than 0.05mg/kg, that is, 0.05ppm (calculated as raw grains).

The use of Jingxun Changtong PH3 electrochemical sensor can effectively detect the residual gas concentration after phosphine fumigation, and can continuously monitor various industrial environments or special environments for 24 hours.

The electrochemical principle is used to accurately and timely detect the residual phosphine gas concentration. It plays an important role in preventing people from poisoning incidents.