Trace metal water column samples collected on the SIPEX II voyage of the Aurora Australis

This dataset will be comprised of measurements taken from trace metal water column samples collected during the SIPEX II Antarctic marine science voyage in 2012. In its current form no sample analysis has been performed. The dataset simply contains the log sheets for the Trace Metals Rosette (TMR) deployments as well as the output files from the TMR software (General Oceanics).

Water samples for dissolved trace metal measurements were collected from the surface (15m) down to the 1000m using an autonomous intelligent rosette system (General Oceanics, USA) specially adapted for trace metal work and deployed on a Dyneema rope. The rosette was equipped with 12x10-L Niskin-1010X bottles specially modified for trace metal water sampling. This system has been successfully deployed on the RSV Aurora Australis during voyages au0703 and au0806. Care was taken to avoid any contamination from the ship and the operating personnel. Water samplers were processed aboard under an ISO class 5 trace-metal-clean laminar flow bench in to a trace-metal-clean laboratory container on the ship's trawl deck. All transfer tubes, filtering devices and sample containers were rinsed liberally with sample before final collection. Samples were then drawn through C-Flex tubing (Cole Parmer) and filtered in-line through 0.2 micron pore-size acid-washed capsules (Pall Supor membrane, Acropak 200). Filtered and unfiltered samples were collected in acid-cleaned 125ml Nalgene LDPE bottles for analysis of dissolved trace metals. Samples were also collected for the determination of stable isotopes of nitrogen and carbon. As well, filtered samples were taken for macro-nutrient analysis in the lab (2 small vials per Niskin, frozen).

Regular sampling depths were as follows: 1000m, 750m, 500m, 300m, 200m, 150m, 125m, 100m, 75m, 50m, 30m, 15m.

At a subset of the SIPEX II ice stations, filtered samples were also collected for Iron(II) analysis aboard the ship by Christina Schallenberg (in the trace-metal-clean laboratory container), and unfiltered samples were collected for analysis of mercury and methyl-mercury by Caitlin Gionfriddo ([e-mail]).

本数据集包含2012年SIPEX II南极海洋科学考察航次中采集的痕量金属水柱样本的测量数据。截至当前，尚未对样本开展任何分析工作，仅收录了痕量金属采水器（Trace Metals Rosette, TMR）的部署日志，以及TMR配套软件（General Oceanics）生成的输出文件。

本次研究采用专为痕量金属检测优化的自主智能采水器系统（autonomous intelligent rosette system），由美国General Oceanics公司生产，通过迪尼玛（Dyneema）缆绳部署，从表层（15m）至1000m水深采集溶解态痕量金属检测用水样。该采水器搭载12个经特殊改装适配痕量金属采样的10L Niskin-1010X采水瓶。此系统曾在航次au0703与au0806中，于RSV Aurora Australis号上成功部署。全程采取严格防控措施，避免来自科考船及操作人员的污染。

水样处理工作在科考船拖网甲板上的痕量金属洁净实验室集装箱内，于符合ISO 5级标准的痕量金属洁净层流工作台中开展。所有传输管路、过滤装置及样本容器均在最终取样前用待采水样充分润洗。样本经C-Flex管路（Cole Parmer）抽取，并通过0.2μm孔径酸洗滤囊（Pall Supor膜，Acropak 200）进行在线过滤。

过滤后与未过滤的水样均收集于经酸洗处理的125ml Nalgene LDPE瓶中，用于溶解态痕量金属分析。此外还采集了用于氮、碳稳定同位素检测的水样。同时，为开展实验室宏营养盐分析，每份采水器取水样均采集2份小瓶过滤样本并冷冻保存。

常规采样水深依次为：1000m、750m、500m、300m、200m、150m、125m、100m、75m、50m、30m、15m。

在SIPEX II航次的部分冰站中，Christina Schallenberg于船上痕量金属洁净实验室集装箱内，对过滤水样开展亚铁（Iron(II)）检测；Caitlin Gionfriddo（邮箱：[e-mail]）则采集未过滤水样，用于汞及甲基汞含量分析。