ppmv

The effect of UVR on photosynthesis and calcification under high CO2 concentration ( 1000 ppmv ) increased significantly comparing with that under the control ( 380 ppmv ) .

UVR对光合及钙化的影响，在高CO2浓度（1000ppmv）下，与对照（380ppmv）相比明显增大。

Rt-Sulfur columns exhibit the same selectivity as Rt-XLSulfur columns , but they are designed for analyses of higher levels of sulfur compounds , generally in the ppmv range .

Rt-Sulfur型填充柱对硫化物的分析分离具有与Rt-SLSulfur型填充柱相同的选择性，但是它们更适合于分析更高浓度的硫化物，象PPMV级浓度的硫化物。

The retrievable method of Raman lidar backscattered signal is expounded and the law of CO2 density profile is obtained . The concentration for atmospheric CO2 varies about between 350 ppmv and 400 ppmv .

对拉曼雷达的回波信号的反演方法进行了具体阐述，初步取得了大气中CO2气体含量分布规律，合肥地区的二氧化碳气体含量大约在350-400ppmv范围内波动。