Dissolved trace elements in profiles and surface waters collected during the Chinese GEOTRACES cruise (GP09) in the tropical northwest Pacific Ocean from April to June 2019

This is a study of dissolved trace elements in profiles and surface waters collected during the Spring 2019 Chinese GEOTRACES cruise (GP09) in the tropical northwest Pacific Ocean. GP09 afforded the opportunity to obtain trace element clean water samples (provided by the cruise organizers) from a region that is geologically complex as well as being a meeting place for various ocean currents and water masses. GP09 sampled the southwest corner of the North Pacific subtropical gyre, one of the largest oligotropic ocean regions and arguably the largest continuous ecosystem on Earth. Yet this region has been poorly studied for trace element distributions. We determined dissolved trace element concentrations by using established high-resolution ICP-MS methods.

本研究针对2019年春季中国GEOTRACES航次（GP09）在热带西北太平洋采集的剖面水样与表层海水中的溶解态痕量元素开展分析。该航次得以获取由航次组织者提供的痕量元素洁净水样，其采样区域地质条件复杂，同时亦是多种海流与水团的交汇地带。GP09的采样覆盖北太平洋副热带环流西南区域，该区域是全球规模最大的寡营养海洋区域之一，亦可堪称地球上最大的连续生态系统。然而此前针对该区域的痕量元素分布研究仍较为匮乏。本研究采用成熟的高分辨率电感耦合等离子体质谱（ICP-MS）方法，完成了溶解态痕量元素浓度的测定。