用活性炭采集,气相色谱法测定苯,以0.2L/min流速采集15min空气,加1mlCS解吸,进样2μl,测得苯为1.0μg,活性炭解吸效率为85%,则空气中苯的浓度为()
A:196.08
B:196.078
C:196.1
D:166.7
E:106.6
出自:理化检验技术