D-tyrosine对碳钢表面铁细菌生物膜的杀菌增强作用机理研究

胥聪敏,罗立辉,王文渊,赵苗苗,田永强,宋鹏迪

Enhancing Sterilization Effect of Bactericide by D-tyrosine to Iron Bacterial Biofilm on Carbon Steel Surface

Congmin XU,Lihui LUO,Wenyuan WANG,Miaomiao ZHAO,Yongqiang TIAN,Pengdi SONG

表2 Q235B碳钢在含SRB培养基中腐蚀0、3和7 d后EIS拟合结果

Table 2 EIS fitting results of Q235B corroded in SRB-containing medium for 0, 3 and 7 d

Mixture ratio Time / d Matched circuit diagram Rs / Ω·cm2 Qf / F·cm-2 Rf / Ω·cm2 Qdl / F·cm-2 Rt / Ω·cm2 W No fungicides added 0 Fig.4c 4.127 0.00013 --- --- 517 0.00022 3 Fig.4a 2.438 --- --- 0.0242 84.34 --- 7 Fig.4a 1.537 --- --- 0.0913 953 --- 50 mg/L THPS 0 Fig.4b 2.979 0.00205 296 0.0063 57.4 --- 3 Fig.4a 0.4107 --- --- 0.183 625 --- 7 Fig.4a 9.12 --- --- 0.0977 543.2 --- 40 mg/L THPS+1 mg/L D-tyrosine 0 Fig.4b 7.16 0.00028 590.3 0.0467 188.3 --- 3 Fig.4a 7.22 --- --- 0.01973 372.8 --- 7 Fig.4b 15.68 0.000087 486 0.042 759.2 ---