Fengying Liang

Abstract The microwave-assisted digestion method has been widely developed due to its high digestion efficiency and effective avoidance of volatile element loss. However, concentrated strong inorganic acids are still recommended for digestion in the majority of the standards and reported studies. This increases laboratory safety risks and environmental burdens.

1 Introduction Acute respiratory distress syndrome (ARDS) is a severe and life-threatening condition characterised by rapid onset of widespread inflammation and increased permeability of the alveolar-capillary barrier, leading to impaired gas exchange and respiratory failure [1, 2]. Despite advances in supportive care, including lung-protective ventilation strategies and neuromuscular blockade, the mortality rate for ARDS remains high, ranging from 30% to 45% [3].