采用以氦作载气的常用气相色谱法时,钍(Ⅳ)的三氟乙酰丙酮盐显现一个不规则的峰,而且螯合物不能定量流洗。但是,用三氟乙酰丙酮蒸气作载气添加物时,不规则的峰可以改进。主要研究了用含有向心配位体蒸气的载气技术,发现比没有向心配位体蒸气存在时得到更可靠的色谱峰。在以三氟乙酰丙酮盐测定铀(Ⅳ)、铁(Ⅲ)和以乙酰丙酮盐测定铝(Ⅲ)、铬(Ⅲ)、铁(Ⅲ)和钍(Ⅳ)时,所建议的方法获得了同样的定量结果。 The trifluoroacetylacetone salt of thorium (IV) shows an irregular peak when using common gas chromatography with helium as the carrier gas, and the chelate can not be quantitatively eluted. However, with trifluoroacetylacetone vapor as a carrier gas addition, irregular peaks can be improved. The main study of carrier gas containing centrosymmetric vapors has been found to yield more reliable chromatographic peaks than the absence of centrosymmetric vapors. The proposed method for the determination of aluminum (III), chromium (III), iron (III) and thorium (IV) with uranium (IV), iron (III) and acetylacetonate with trifluoroacetylacetonate gives The same quantitative results.