厦门大学同位素海洋化学实验室

2021.05.07

9:00

周隆泉楼

A3-206

张琨

Uptake of New and Regenerated Forms of Nitrogen   in Cosmonaut Sea

吕炳辰

赵秀峰

Particle dynamics of ²¹⁰Po and ²¹⁰Pb   based on multi-season investigations in the South China Sea and the Western   Pacific

陈金旭

The freshwater components of water masses in the   Prydz Bay based on oxygen isotope study

报告提要

张琨：1. f_average= 0.86±0.10, RPI_NO3-<1, RPI_NH4+>1,   Regenerated Nitrogen contribute more. 2. Compared with other sea areas,   Astronauts Sea has a relatively low uptake rate of ammonium, can be thought   of a high ƒ ratio area with low production.

赵秀峰：1. Differences in particle activity between ²¹⁰Po and ²¹⁰Pb.   2. Modelled sinking velocity of ²¹⁰Po. 3. Carbon fluxes based on ²¹⁰Po   and ²¹⁰Pb disequilibrium.

陈金旭：1. Study area and method. 2. Temporal variation of T/S/δ¹⁸O in   different water masses. 3. Result of the freshwater components in different   water masses. 4. Difficulties and deficiencies.

2021.05.14

9:00

周隆泉楼一楼多功能厅

杨紫菲

The slowly sedimentation, bioturbation and   organic matter degradation as reviewed by excess ²³⁰Th and ²¹⁰Pb   in the Cosmonaut Sea sediments

马露琦

王昕

Thorium and protactinium isotopic and   concentration measurements by high resolution single receiver inductively   coupled plasma mass spectrometry (HR-SC-ICP-MS)

许子夫

Getting high purity phosphate from multitype of   samples for oxygen isotope analyses by 1-Hexanol extraction

杨睿

Tracing Phosphorus sources in Jiulong River:   Insights from phosphate oxygen isotope ratios

报告提要

杨紫菲：1. The bioturbation intensity is firstly quantified in the East Antarctic   Cosmonaut Sea. 2. The bioturbation and microbial activities are inactive   within the Cosmonaut Sea. 3. The sedimentary environment of the Cosmonaut Sea   is conducive to the preservation of organic matter.

王昕：1. ²³⁰Th和²³¹Pa 同位素测量实验方法的建立和优化. 2. Element XR 测量方法的建立. 3. 南海北部²³⁰Th和²³¹Pa的分布.

许子夫：1. Theoretical basis of the method proposed in this study. 2.   Verification of the feasibility of the new method. 3. Purity of silver   phosphate produced by new method.

杨睿：1. Research significance of oxygen isotopes of phosphates. 2.   Distribution characteristics of oxygen isotopes of phosphates in JiuLong   River. 3. Oxygen isotopes of phosphates trace phosphorus sources.