用重量法测定大气中总悬浮颗粒物的浓度。采样流量为1.2m3/min,连续采样24h,现场气温为15° C,大气压力为98.6kPa,采样前后滤膜增重302mg。大气中总悬浮颗粒物浓度为:
A.0.19mg/m3 B.0.17mg/m3 C.11mg/m3 D.10mg/m3正确答案B
用重量法测定大气中总悬浮颗粒物的浓度。采样流量为1.2m3/min,连续采样24h,现场气温为15° C,大气压力为98.6kPa,采样前后滤膜增重302mg。大气中总悬浮颗粒物浓度为:
A.0.19mg/m3 B.0.17mg/m3 C.11mg/m3 D.10mg/m3正确答案B