The cause of formation of gas of unidentified peculiar smell that Shanghai part area appears shows to already was found out, the be caused by of leak of herbicide of factory of a pesticide that fastens area of the Gao Qiao outside be located in Shanghai Pudong.

The reporter gets confirming from bureau of Shanghai environmental protection, 15 days of evening were controlled at 10 o'clock, north of mouth of Shanghai poplar riverside, rainbow, brake, static how, origin appears in the air of central the city zone such as Pu Tuo, lasting peace unidentified peculiar smell. Partial citizen occurrence bosom is frowsty, disgusting, swimmy wait for a symptom. Check through urgent platoon, leak of many kilograms of 300 herbicide happening brings about the Shanghai pesticide factory that decides peculiar smell gas is area of the Gao Qiao outside be located in basically already at present. Because 15 days of late Shanghai blow northeaster, after herbicide leak, blow along with wind come loose many areas of Shanghai.

The conclusion that investigates at present is, because worker operation is undeserved, together with temperature is high, valve pressure is great, cause valve damage, cause herbicide leak.