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銻的此色分析,最初采用罗丹明B法,此后苏联文献报告用甲基紫为銻的定性分析試剂,日本文献报告采用甲基紫为銻的定量比色試剂,曹、卢、汤等氏更推荐用孔雀綠及結晶紫做銻的比色分析試剂,最近我們試驗了多种三苯甲烷类染料,如:酸性紫,溶性藍,麝香草藍,溴麝香草藍,亮綠等,發現亮綠同样可以作銻的显色剂。采用亮綠进行銻的比色测定,最大优点为空白試驗的苯層溶液,几为完全無色;而在同样条件下,如用罗丹明B显色,則空白試驗所得的苯層溶液显淡紅色(見表1),故用本法测定銻时,用純苯作空白液即可,若用罗丹明B作显色剂,則必須每次伴同做一
The color analysis of the wolfberry was originally conducted using the Rhodamine B method. Since then, the Soviet Union reported using methyl violet as the qualitative analysis reagent for quinones, and the Japanese literature reported the use of methyl violet as the quantitative colorimetric reagent for wolfberry, Cao, Lu, and Tang. He recommended the use of malachite green and crystal violet as colorimetric reagents. Recently, we tested a variety of triphenylmethane dyes, such as: acidic violet, soluble blue, thyme blue, thyme blue, bright green Etc., found bright green can also be used as a color developer. The colorimetric determination of ruthenium using bright green, the biggest advantage is the blank test benzene layer solution, several completely colorless; and under the same conditions, such as the use of rhodamine B color, the blank test results of the benzene solution was light red (See Table 1), so when using this method to determine helium, pure benzene can be used as a blank solution. If using rhodamine B as a color developer, it must be accompanied by a