Mercury Methylation Study Sediment Samples, Carson River, 1999, USGS

USGS conducted preliminary assays on aged (3 mo.) surface sediment (0-4 cm) collected from 13 sites during October 1998 in order to decipher general spatial trends in...美国地质调查局（United States Geological Survey）于1998年10月对从13个采样点采集的、陈化3个月的0~4厘米表层沉积物开展了初步化验分析，旨在解析……的整体空间分布趋势。