Long-term water quality monitoring in the Altamaha, Doboy and Sapelo sounds and the Duplin River near Sapelo Island, Georgia from May 2001 to August 2009

Water samples were collected on Georgia Coastal Ecosystems LTER oceanographic monitoring cuirses approximately every three months from May 2001 through December 2006 and monthly from November 2006 to August 2009. Concentrations of dissolved nutrients (ammonium, nitrate+nitrite, phosphate), dissolved organics (DOC, DON, DOP), particulate organic carbon and nitrogen, total suspended sediment, and total particulate iron and phosphorus were measured using standard analytical methods. The concentrations of six elements (calcium, potassium, magnesium, sodium, silicon, and strontium) were also determined occasionally using elemental analysis by inductively coupled plasma mass spectrometry (ICP-MS).本数据集的水样采集于佐治亚海岸生态系统长期生态研究（Long Term Ecological Research, LTER）海洋监测航次，采集周期为：2001年5月至2006年12月期间约每3个月一次，2006年11月至2009年8月期间调整为每月一次。采用标准分析方法测定了溶解态营养盐（铵盐、硝态氮+亚硝态氮、磷酸盐）、溶解态有机物（溶解有机碳（Dissolved Organic Carbon, DOC）、溶解有机氮（Dissolved Organic Nitrogen, DON）、溶解有机磷（Dissolved Organic Phosphorus, DOP））、颗粒有机碳与颗粒有机氮、总悬浮沉积物，以及总颗粒态铁与总颗粒态磷的浓度。另有钙、钾、镁、钠、硅及锶六种元素的浓度，偶有通过电感耦合等离子体质谱（Inductively Coupled Plasma Mass Spectrometry, ICP-MS）开展元素分析完成测定。