Derwent Estuary Ambient Water Quality monitoring program - Site U16/17

Site U16/17 is sampled monthly by Norske Skog 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

U16/17采样点由Norske Skog公司按月开展采样，作为德文特河（Derwent）环境水质监测项目的组成部分。
自2003年起，Norske Skog Boyer、Nyrstar Hobart与塔斯马尼亚州政府联合，在德文特河口（Derwent Estuary）全流域至多28个采样点按月实施环境水质监测工作。本次监测由三支独立的船基采样团队负责，但所有采样均统筹安排在每月的同一天进行。
在每个采样点，研究人员使用经校准的传感器原位测定水温、盐度、pH值、溶解氧与浊度；同时采用赛氏透明度盘（Secchi Disk）测定水体透明度。
采集表层与底层水样，用于分析真色、总悬浮颗粒物（Total Suspended Solids, TSS）、总营养盐与溶解态营养盐、有机碳以及锌元素。
在多数采样点，还会使用塑料采集管采集深度整合水样，用于叶绿素a（Chlorophyll a）的检测。
河口中部与外河段的底层水样采用尼斯金采水器（Niskin Bottle）采集。
河口上游采样点则使用泵体完成水样灌装。
所有水样均送至塔斯马尼亚分析服务中心（Analytical Service Tasmania）进行检测，该机构为澳大利亚国家检测机构协会（National Association of Testing Authorities, NATA）认可的实验室。
监测点水深为2米。