车间空气钨和碳化钨的测定,目前尚缺乏灵敏、简便的方法。近年来,车间空气钨和碳化钨的测定采用硫氰酸钾——三氯化钛于470mm波长下比色定量,灵敏度为100μg/10ml(以钨计)。最近,我们在研究车间空气钨和碳化钨测定方法时,发现用硫氰酸钾——三氯化钛于400mm波长下比色定量,灵敏度可达10μg/ Workshop air tungsten and tungsten carbide determination, the current lack of sensitive and easy way. In recent years, the workshop air tungsten and tungsten carbide determination of potassium thiocyanate - titanium trichloride at 470mm wavelength colorimetric quantification, the sensitivity of 100μg / 10ml (tungsten). Recently, when we studied the determination of tungsten and tungsten carbide in the workshop, we found that the sensitivity of colorimetric determination with potassium thiocyanate-titanium trichloride at 400mm wavelength is up to 10μg /