摘  要：精四氯化钛中的三氯乙酰氯会影响海绵钛的质量。为测定三氯乙酰氯的含量,应用傅里叶变换红外光谱技术、自制5 cm长光程液体池和一套密封取样装置，定量分析了精四氯化钛中的三氯乙酰氯。本方法的线性范围在（0～0.163）g/L，相关系数r=0.999 4，吸光系数是2.767 L/g·cm，检出限3.61×10-4 g/L。本方法检出限低、灵敏度高、线性范围宽，可满足四氯化钛工业生产监控这种杂质的要求。   关键词：傅里叶变换红外光谱；四氯化钛；三氯乙酰氯；定量分析；密封取样装置   中图分类号：TQ114；TH744.41        文献标识码：A          文章编号：1672-4984（2008）03-0095-03   Quantitative analysis for trichloroacetyl chloride in titanium tetrachloride by infrared spectrophotometers   SONG Yu-ping1，2， TAN Hong2， SUN Jun-ping1， YANG Hong-bo2， CHEN Hong-liang1，2， XU Hua-jie1，2， HE Jin-lin2   （1.Guizhou University，Guiyang 550001，China； 2.Guizhou Research Center of Physical Testing and Chemical Analysis，Guiyang 550001，China）   Abstract： Trichloroacetyl chloride in titanium tetrachloride affects the quality of titanium sponge, FT-IR（Fourier transform infrared） spectrophotometer with a homemade 5 cm path length liquid cell and a set of airproof sampling units has been used to determine trichloroacetyl chioride in titanium tetrachloride. The results show that the liner range of calibration curve is from 0 g/L to 0.163 g/L, r, the correlation coefficient is 0.999 4, the absorbance coefficient is 2.767 L/g·cm and the detection limit is 3.61×10-4 g/L. All above indicate this method can determine low concentration trichloroacetyl chloride, with high sensitivity and wide liner range. Thus, it will satisfy industrial production requirement well.   Key words： FT-IR spectrophotometers； Titanium tetrachloride； Trichloroacetyl chloride； Quantitative analysis; Airproof sampling unit   Editor：liyan