Fig. 1: Changes of major geochemical factors of seawater during different culture stages (25, 55, and 85 days) with/without crude oil exposure. | npj Materials Degradation

Fig. 1: Changes of major geochemical factors of seawater during different culture stages (25, 55, and 85 days) with/without crude oil exposure.

From: Microbiologically influenced corrosion of steel in coastal surface seawater contaminated by crude oil

Fig. 1

Changes of A sulfate concentration in seawater and B pH value along with incubation time. C The concentration of low-molecular organic acids and alcohols after 85 days of incubation. D Cell number of acid-producing bacteria (APB) and sulfate-reducing bacteria (SRB) calculated using MPN enumeration methods. “*” indicated the significant differences between groups by t-tests; “▾” indicated the undetected substances. “With Oil”: With crude oil amendment; “No Oil”: Without crude oil. T1: 25 days; T2: 55 days; T3: 85 days. Error bars represent standard deviations of three independent samples from triplicate systems.

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