微库仑法测定有机液体产品中微量硫含量

Determination of the trace sulfur content in organic liquid product with micro-coulometry

对有机液体产品中微量硫含量的微库仑测定方法进行了研究,提出了根据氯化物、氮化物含量的不同使用2种不同的电解液,确定了产品中的氯化物、氮化物对测定结果影响的最低干扰浓度。试验验证了叠氮化钠溶液对氯化物、氮化物干扰的掩蔽作用。通过试验,找出了影响测定结果的操作因素和最佳的操作条件。

The micro-coulometry of determination the trace sulfur content in organic liquid product was studied. Two different electrolyte were used according to the different chloride and nitride content. The minimum interference concentration of chloride and nitride in the organic liquid product was determined. The masking effect of the sodium azide solution on the interference of chloride and nitride was verified. The operation factors that had effect on the test results and the optimum operation conditions were found out.