Because of insufficient ventilation during winter, water condensation associated with a high concentration of ammonia (70-100 ppm) in the air, occurred on several breeding farms. The ammonia became bound to the condensation water and was converted into nitrites (6000-16000 mg/l) and nitrates (1630-1700 mg/l). Ingestion by the birds resulted in acute death, probably as a result of the high nitrite concentration. The brown colour of the blood pointed to the conversion of haemoglobin to methaemoglobin and this is one of the features of nitrite poisoning.
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J Hazard Mater
January 2025
School of Metallurgical Engineering, Xi'an University of Architecture and Technology, Xi'an, Shaanxi 710055, PR China.
The presence of PbO in the flue gas can poison FeCe catalyst, reducing its denitrification efficiency. In this work, the mechanism of PbO poisoning of FeCe catalyst, along with the effects of W and Co co-doping on the NO oxidation performance and PbO resistance of FeCe catalyst were investigated. The S of FeCe catalyst decreased and the crystallinity increased obviously after PbO poisoning.
View Article and Find Full Text PDFLeg Med (Tokyo)
January 2025
Department of Forensic Medicine, Faculty of Medicine, Jagiellonian University Medical College, Grzegórzecka 16 31-531 Kraków, Poland. Electronic address:
This paper reports three rare cases of accidental sodium nitrite poisoning, including one fatality, caused by the consumption of aspic purchased from a private vendor. Clinical symptoms included cyanosis, hypotension, and respiratory distress, with methemoglobin (MetHb) levels ranging from 5 % to 41.7 %.
View Article and Find Full Text PDFClin Toxicol (Phila)
January 2025
Minnesota Regional Poison Center, Minneapolis, MN, USA.
Introduction: Sodium nitrite is a potent oxidizer, which may precipitate rapidly lethal methemoglobinemia. Prompt diagnosis and treatment may salvage otherwise fatal cases. It is unclear if emergency departments are prepared for increasing cases.
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