Temporal variations of organochlorine pesticides in precipitation in Beijing, China

► We determined the temporal variations of OCPs in precipitation in Beijing from February 2009 to March 2011. ► The concentrations of ∑OCPs were higher in late winter and spring. ► OCPs in dissolved phase dominated sampled concentrations. ► The wet deposition flux of ∑OCPs was 14.9 μg m−2 yr−1.