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燃料中总硫量的测定,埃什卡法是个经典方法,目前仍然是个标准方法。但分析流程较长,需要两天。载砷活性炭中总硫量的测定目前尚未有报道,我们采用燃烧中和法测定。在1300～1350℃的高温下通入空气流,使各种状态存在的硫均转化为二氧化硫或三氧化硫。用含有过氧化氢的水溶液吸收,使其全部转化为硫酸。以次甲基兰—甲基红为指示剂,用氢氧化钠标准液进行滴定,此法分析时间为10分钟。
Determination of total sulfur in fuel, Eshka method is a classic method, is still a standard method. But the analysis process is longer, it takes two days. Determination of total sulfur in arsenic activated carbon has not been reported, we use the combustion and determination. At 1300 ~ 1350 ℃ high temperature through the flow of air, so that various states exist sulfur are converted to sulfur dioxide or sulfur trioxide. Absorb with an aqueous solution containing hydrogen peroxide and convert it all to sulfuric acid. Methylene blue - methyl red as an indicator, with sodium hydroxide standard titration, the method analysis time is 10 minutes.