【摘要】 <正> H（TPM）螯合剂（三氟乙酰基特戊酰基甲烷）用于无机物气相色谱分析,目前报道较多的是该螯合物的分离研究。其定量应用有Sokolov等人发表的聚乙烯中微量铝的测定（灵敏度为0.25ppm）。鉴于H（TPM）鳌合剂结构的特点,本文用Cr（TPM）₃对痕量铬进行了定量分析考察,可以看出:Cr（TPM）₃螯合物具有良好的挥发性和热稳更多还原

【Abstract】 The synthesized Cr(TPM)s chelate was confirmed by elemental analysis, IR, NMR and thermogravimatry. Its chromatographic behavior was also studied. The quantitative analysis of trace Cr in water has been performed by TPM chelation and gas chromatography with BCD. The method has the minimum detectable amount of 0.74×10-8μg and the linear range between 1.6ppb and 200ppb. The relative standard deviation is less than 8% in the pH range of 1.3 to 4.6.更多还原