“…This technique can additionally be used for various kinds of specie samples such as environmental, sediment, biological, food, suspension, fuel, drug, etc. Our research group has had excellent results with the use of permanent modifiers in different matrices analyzed by GFAAS, such as clinical (12, 17-20, 23-27, 31), biological (11,21), environmental samples (10,(32)(33)(34), as well as beverages (35,37), foods (4,16,(28)(29)(30), drugs (38,39), and others (22,36).…”