Can the total sulfur content be used to determine wet hydrogen sulfide corrosion?
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Since there is no direct hydrogen sulfide analysis, can the presence of wet hydrogen sulfide conditions be determined based on total sulfur?
Total sulfur refers not only to hydrogen sulfide but also to other forms of sulfur. It is recommended that the original poster clarify the specific issues and detailed parameters so that other marine enthusiasts can help confirm them
No, there are many types of sulfur compounds, and their physicochemical properties vary greatly; it is not possible to determine their corrosivity based on total sulfur levels alone.
Hydrogen sulfide in gases. There are now standards for detecting hydrogen sulfide in liquids; as for total sulfur and many other elemental sulfur compounds, this is definitely not feasible.
No, total sulfur includes many different forms of sulfur; hydrogen sulfide is just one of them. It’s not certain whether hydrogen sulfide is present in the medium, so it’s not possible
Theoretically, the total sulfur content should be higher than that of hydrogen sulfide, when the units are consistent; however, we often observe the opposite result
It’s not possible, because some organic sulfur compounds do not cause corrosion to equipment
Our company produces zinc oxide desulfurization agents, which have specific technical requirements regarding sulfate ions. The customer uses a total sulfur analyzer to measure the sulfur content and convert it into sulfate ions. We insist that using total sulfur is disadvantageous to our company, and there are methods for detecting sulfate ions (such as precipitation method and turbidimetry). If the customer determines that the product is unqualified based on the total sulfur value, we will apply for arbitration. Later, the customer believed that for sulfur content determination using a total sulfur analyzer, if the amount of sulfur converted to sulfuric acid was within acceptable limits, it was considered qualified; even if it exceeded those limits slightly, it was still regarded as qualified. Although we think it’s not very appropriate, since the other party has raised no quality objections, we’ll go with it for now. Similarly, total sulfur cannot represent hydrogen sulfide.
If abnormal opposite data appear occasionally, it may be due to factors such as interference or sampling, which is understandable. Your frequent occurrences indicate that there are technical issues in your analysis and testing, such as problems with instruments, methods, personnel, and data interpretation.