论文部分内容阅读
目的：通过减少甲醛吸收液的用量对空气中二氧化硫测定结果的影响进行探讨。方法：采用5m l甲醛吸收液法与5m l四氯汞钾法及10m l甲醛法测定空气中二氧化硫的浓度，在满足吸收率条件下比较测定结果是否有差异。结果：5m l甲醛法准确度较10ml甲醛法高。结论：采用5ml甲醛吸收液吸收法可降低检出限，提高准确度。“,”Objective To study the effect of reducing the amount of formaldehyde absorbed liquid on the determination of sulfur dioxide in air.Methods 5ml 5ml and 10ml four were used to determine the concentration of sulfur dioxide in air.ResultsThe accuracy of 5ml was higher than that of 10ml.Conclusion This method can reduce the detection limit and increase the accuracy.