紫外吸收法测定天然气中硫化氢含量的研究

针对测定天然气中硫化氢含量的紫外吸收法目前还缺乏国家标准的问题,在不同机构开展该原理仪器的一系列比对测试研究,采用GB/T 6683-1997《石油产品试验方法精密度数据确定法》对数据处理,获得紫外吸收法测定硫化氢含量的重复性和再现性要求,明确了该检测方法的结果判定依据,为编制该方法的国家标准起到了重要作用.同时,研究...

A Study on the Determination of Hydrogen Sulfide in Natural Gas by Ultraviolet Absorption Method

Aiming at the problem for the ultraviolet absorption method in the determination of hydrogen sulfide content in natural gas, is still lack of national standards, a series of comparative tests of the instruments are carried out in different institutions, and data are processed according to Petroleum products–Determination of precision data in relation to methods of test(GB/T 6683-1997), requirements of the repeatability and reproducibility of UV absorption method for determination of hydrogen sulfide content are obtained, and the determination of the test results is made clear, which plays an important role in the preparation of the national standard of this method. At the same time, the comparative experiment with iodometric method is also used in the study. The results show that, compared with the artificial chemical titration method, the ultraviolet absorption method can control more influencing factors at a lower random level through the instrument, so it appears more stable and controllable. In addition, the continuous stability test data of 7 months show that stability of the test this method is excellent, and it has the long-term stability and accuracy requirements for online monitoring of hydrogen sulfide content in pipeline gas.