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. 2017 Mar 16;12:2109–2115. doi: 10.2147/IJN.S130608

Table 1.

Atomic percentages of plasticized polyvinyl chloride endotracheal tube determined through X-ray photoelectron spectroscopy analysis

C1s O1s Na1s Si2p Cl2p O/C
Untreated 86.1 12.3 1.7 0.14
Nano-R 75.1 11.4 7.9 0.15
Untreated (24-hour TSB) 76.8 11.1 2.4 5.3 0.14
Nano-R (24-hour TSB) 84.5 10.4 1.5 3.6 0.16

Abbreviations: C1s, carbon 1s electron shell; O1s, oxygen 1s electron shell; Na1s, sodium 1s electron shell; Si2p, silicon 2p electron shell; Cl2p, chlorine 2p electron shell; O/C, oxygen to carbon ratio; Nano-R, 0.1% R. arrhizus solution; TSB, tryptic soy broth.