于2015年3月29日至5月6日乘东方红2号从青岛前往西北太平洋,采用现场测定与室内分析结合的方法分析了黄海到西北太平海域表层海水中Hg形态及分布特征,以认识黄海到西北太平洋海水Hg的含量及区域Hg的迁移。黄海-西北太平洋表层海水中总汞(THg,total mercury)变化范围为0.11~2.50 ng/L,平均为0.75±0.51 ng/L,THg的含量呈近海高大洋低;表层海水中活性汞(RHg,reactive mercury)范围为0.10~1.45 ng/L,平均为0.33±0.24 ng/L,RHg/THg平均为48.4%,海水中RHg与水温呈显著性正相关(r=0.494*,P=0.045);表层海水中溶解性气态汞(DGM,dissolved gaseous mercury)的含量为11.7~105.7 pg/L,平均浓度39.6±22.9 pg/L。海水中DGM与气温呈显著正相关(r=0.633*,P=0.011),与风速呈显著负相关关系(r=-0.660**,P=0.006)。从黄海到西北太平洋DGM含量逐渐升高,其日变化呈现白天高夜晚低的趋势,主要受光照的影响。 From March 29 to May 6, 2015, taking Dongfanghong No. 2 from Qingdao to the northwestern Pacific Ocean, the Hg morphology and distribution in the surface seawater from the Yellow Sea to the Pacific Northwest Pacific Ocean were analyzed by a combination of on-site and laboratory analyzes. Hg content and regional Hg migration in the Yellow Sea to the Northwest Pacific Ocean. Yellow Sea - The total mercury in the surface waters of the western North Pacific ranges from 0.11 to 2.50 ng / L, with an average of 0.75 ± 0.51 ng / L. The content of THg in the sea surface is lower than that in the offshore ocean. , reactive mercury ranged from 0.10 to 1.45 ng / L with an average of 0.33 ± 0.24 ng / L and RHg / THg averaged 48.4%. There was a significant positive correlation between RHg and water temperature in seawater (r = 0.494 *, P = 0.045) The content of dissolved gaseous mercury (DGM) in surface seawater ranged from 11.7 to 105.7 pg / L with the average concentration of 39.6 ± 22.9 pg / L. There was a significant positive correlation between seawater DGM and air temperature (r = 0.633 *, P = 0.011) and a significant negative correlation with wind speed (r = -0.660 **, P = 0.006). The content of DGM increased gradually from the Yellow Sea to the northwestern Pacific, and its diurnal variation presented a trend of high daytime night and low nighttime, mainly influenced by light.