中文摘要：

介绍了Chernin型多通池的原理、设计及应用,该系统稳定性好,调节简单,光程在3—330m的范围内可调.通过对NO2的痕量探测,验证了该系统的稳定性及可靠性,在37m的吸收光程内,NO2的探测极限达19.1μg/m3.同时,利用该系统对烟雾箱内的邻、间、对-二甲苯,甲苯进行了痕量探测,在36m的吸收光程内,探测极限分别达到42.6,15.1,9.9和19.7μg/m3,该系统可以满足烟雾箱内挥发性有机化合物测量的需要,结果可用于研究二次有机气溶胶的生长机理和大气中污染物的光化学反应过程.

英文摘要：

A newly developed Chernin cell was combined with the smog chamber for the volatile organic compounds（VOCs） detection using ultraviolet-visible spectroscopy.The principle,design and application of the Chernin cell were introduced in this paper.The Chernin cell has good vibrostability and is easily adjusted.The optical pathlength can be adjusted from 3 to 330 m.The system precision,stability and reliability were proved with NO2 detection.With 37 m absorption pathlength,the NO2 detection limit was 19.1 μg/m3.For the application of this system for VOCs detection,the concentrations of o,m,p-xylene and toluene in the smog chamber were measured with 36 m absorption pathlength,and the corresponding detection limits were 42.6,15.1,9.9 and 19.7 μg/m3 respectively.