Derwent Estuary Ambient Water Quality monitoring program - Site KB

Site KB is sampled monthly by the Derwent Estuary Program as part of the Derwent Ambient Water Quality monitoring program.
Since 2003, ambient water quality monitoring has been carried out on a monthly basis at up to 28 sites throughout the Derwent estuary by Norske Skog Boyer, Nyrstar Hobart and the State Government. Monitoring is carried out by three different boat-based sampling parties, but is co-ordinated to occur on the same day each month.
At each site, in-situ field measurements are taken using calibrated sensors for temperature, salinity, pH, dissolved oxygen and turbidity. Water clarity is also measured using a secchi disk. Surface and bottom water samples are collected for analysis of true color, total suspended solids(TSS), total and dissolved nutrients, organic carbon and zinc. at most sites, depth integrated samples are also collected for chlorophyll a using a plastic tube. Bottom samples in the Middle and Outer estuary are collected using a niskin bottle. Pumps are used in the upper estuary site to fill up the bottles. All water samples are analysed at Analytical Service Tasmania, a National Association of Testing Authorities-accredited laboratory. Monitoring site depth is 2 meters

KB站点由德文特河口项目（Derwent Estuary Program）每月采样，是德文特环境水质监测项目（Derwent Ambient Water Quality Monitoring Program）的一部分。
自2003年起，Norske Skog Boyer、Nyrstar Hobart及州政府在德文特河口全域的28个站点开展月度环境水质监测。监测由三个不同的船载采样团队执行，但协调为每月同一日进行。
每个站点使用校准传感器进行现场原位测量，指标包括温度、盐度、pH值、溶解氧及浊度。同时采用塞奇盘（secchi disk）测量水体透明度。
采集表层和底层水样，用于分析真色、总悬浮固体（Total Suspended Solids, TSS）、总营养盐与溶解性营养盐、有机碳及锌。多数站点还使用塑料管采集深度综合样本，以分析叶绿素a。
中河口及外河口的底层样本采用尼斯金采水瓶（niskin bottle）采集。上游河口站点则使用泵填充采样瓶。
所有水样均由塔斯马尼亚分析服务公司（Analytical Service Tasmania）分析，该机构为国家测试机构协会（National Association of Testing Authorities）认证实验室。监测站点水深为2米。