摘要
叙述了一种简单快速测定车间空气中三氟化硼的方法，采用多用途空气收集器采集空气中的三氟化硼，三氟化硼在吸收液中水解成硼酸，然后用苯羟乙酸（ＭＡ）和扁桃酸（ＭＧ）络合显色，苯萃取，在６３３ｎｍ波长下分光光度法测定。方法的检测限为０．０５５ｍｇ／Ｌ，最低检测浓度为０．１ｍｇ／ｍ３（采集３０Ｌ空气）线性范围０～０．５ｍｇ／Ｌ，平均采样效率为９６．８％。
An extraction spectrophotometric determination methOd of boron trifluoride (BF3) in air of workplace is developed. Boron trifluoride is collected with the universal air sampler containing absorbing solution and hydrolyzed to boric acid in the absorbing solution. The boron reacts with mandelic acid and malachite green. The boron-complex ion obtained is extracted into benzene and its absorbance is measured at 633nm. The calibration graph is linear in the range of 0～0. 5mg/L of boron. The minimum detectable concentration of BF3 is 0.1mg/m3 in 30L of air sample. The mean sampling rate of the procedure is 96.8%.
出处
《卫生研究》
CAS
CSCD
北大核心
1994年第5期266-269,共4页
Journal of Hygiene Research
关键词
三氟化硼
萃取
分光光度法
Boron trifluoride
extraction
spectraphotometry
