化合物(6)上与氮相连的活泼氢原子，可能对某些反应有不利影响，故用碘甲烷对其进行甲基取代，得到了新的手性胍—化合物(7)，并做了表征。
The active hydrogen in the compound (6) might take negative effect in some reactions and was substituted by a methyl to get compound (7) which was a new chiral guanidine.
腐蚀性气体硫化氢的测定方法最常见的是亚甲基蓝分光光度法和碘量法，这两种测定方法都受到众多因素的影响。
The most common determining methods of corrosive gas - hydrogen sulfide are the methylene blue spectrophotometry and the iodimetry, however, these two methods are both affected by many factors.
应用甲基橙褪色分光光度法测定酱中碘。
To use them ethyl orange depigmentation spectrophotometry to detect the iodine in the sauce.
测量了比表面积和得率，孔径分布，用碘吸附值、亚甲基兰吸附值测定了中空活性炭纤维的吸附性能，用SEM观察了其表面结构。
The specific surface area, pore size and yield ratio have been measured. Iodine and Methylene blue adsorption were used to study the adsorption capacity of ACHF.
测量了比表面积和得率，孔径分布，用碘吸附值、亚甲基兰吸附值测定了中空活性炭纤维的吸附性能，用SEM观察了其表面结构。
The specific surface area, pore size and yield ratio have been measured. Iodine and Methylene blue adsorption were used to study the adsorption capacity of ACHF.
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