摘  要：精四氯化鈦中的三氯乙酰氯會影響海綿鈦的質量。為測定三氯乙酰氯的含量,應用傅里葉變換紅外光譜技術、自制5 cm長光程液體池和一套密封取樣裝置，定量分析了精四氯化鈦中的三氯乙酰氯。本方法的線性范圍在（0～0.163）g/L，相關系數r=0.999 4，吸光系數是2.767 L/g·cm，檢出限3.61×10-4 g/L。本方法檢出限低、靈敏度高、線性范圍寬，可滿足四氯化鈦工業生產監控這種雜質的要求。   關鍵詞：傅里葉變換紅外光譜；四氯化鈦；三氯乙酰氯；定量分析；密封取樣裝置   中圖分類號：TQ114；TH744.41        文獻標識碼：A          文章編號：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