环境应急监测中两种便携式仪器的应用

在环境应急监测中,便携式气相色谱-质谱仪HAPSITE Smart IQ和便携式气相色谱仪zNose4200主要用来监测挥发性有机物。在环境污染事故中二者的应用已较成熟、广泛,二者分别发挥各自作用,在实际工作中将二者联合应用能够取得更好的效果。HAPSITE可以快速准确地对挥发性化学物质进行定性,但在定量过程中每个样品的测定过程需要数分钟,而zNose4200可以在数秒钟内对已知挥发性物质进行定量。在HAPSITE准确定性基础上,用zNose4200出具定量数据,可以有效缩短污染事故发生时环境应急监测的时间。两者联用技术,在很大程度上提高了环境应急监测能力。

Application of Two Portable Instruments in Environmental Emergency Monitoring

HAPSITE Smart IQ and portable zNOSE4200 are typically used to measure the volatile organic compounds（VOCs）.In recent years,both devices are widely used in environmental emergency.It was found that the combination of HAPSITE and zNOSE4200 is more efficient and robust in contrast to individual one in environmental monitoring.HAPSITE can quickly and accurately determine the species of VOCs.While it needs several minutes to quantify one sample.Differently,zNOSE4200 can quantify the known organic compounds in several seconds.In practice,the HAPSITE can be used to define the organic species.Afterwards,the concentration of organic compounds can be quantified by using zNOSE4200.Such combination will significantly reduce the detection time of VOCs.Specially,it is very important in environmental emergency.This approach will greatly improve our capacity of dealing with the environmental emergency.