1.By modeling of "Y"-shaped junction of the compoundriver channel with an intersection angle 90°, the flow velocity and water level at the junction were obtained by use of the acoustic Doppler velocimeter (ADV) and point gauges.
3.Using blowing and arresting device and GC/MS, full automatic permanent current control, 47 kinds of volatile organic compound in water sample from 7 cross section in Huangpujiang River was analyzed.
