目標：本報告陳述實驗室因廢液處理不當爆炸導致氫氟酸灼傷案例。事件經過及處理：某大學實驗室，因操作人員疏忽，將不相容廢液混合，產生劇烈反應，使廢液桶爆炸，致氫氟酸噴濺灼傷操作人員。隨後進入之急救人員，亦因未穿戴適當防護具，導致呼吸道灼傷。氫氟酸爆炸後皮膚灼傷病患，立即以葡萄酸鈣塗抹傷口，經三個月治療恢復正常。另一個案呼吸道遭灼傷者，以類固醇及吸入性葡萄酸鈣製劑治療，一週後恢復。結論：廢液回收為廢棄物處理重要一環，處理過程應注意廢液相容問題。而不同途徑氫氟酸暴露，可造成不同型態的傷害，但以不同製備型態葡萄酸鈣 處理，可達治療效果。

　　　　　Objectives: Two case reports present the clinical manifestations and management of hydrofluoric acid burns resulting from an explosion caused by incompatible laboratory liquid wastes. Case reports: The explosion occurred at a university laboratory when a technician placed isopropyl alcohol liquid waste into a waste receptacle containing hydrofluoric acid. The technician received hydrofluoric acid burns in this accident. She was immediately treated with calcium gluconate paste and recovered within 3 months. The second case was a school nurse who came to the scene to help the technician and subsequently developed laryngeal swelling. She was treated with steroids and a nebulized form of calcium gluconate and recovered in 1 week. Neither of them were wearing adequate personal protective equipment. Conclusions: Although liquid waste pooling is a common practice for waste disposal, careful attention should be paid to the compatibility of various liquid wastes. Furthermore, hydrofluoric acid may cause a variety of injuries resulting from different routes of exposure. However, timely treatments with appropriate preparations of calcium gluconate may produce a satisfactory recovery.