Treating Condition Samples Ag (µg/L) Deionized water Blank 0.002 The film dip in 40℃ hot-water for 24h A 0.005 The film dip in 80℃ hot-water for 24h B 0.009 The solution diluted 1000 times with deionized water C 0.025

Table 4: The extraction of Ag+ ion of the silicone-modified antimicrobial PE ETT.