第173期同位素论坛时间为2021年4月30日9：00，地点为周隆泉楼A3-206。
本期论坛主持人为胡嘉舜，共有2人作报告（张琨、王昕向导师申请延后报告）：
范玲芳：
Significant Nitrification in the Indian sector of the Southern Ocean
唐震：
Separation of barite from marine sediments
1. Introduction of barite separation from marine sediments.
2. Discussion on the applicability of barite separation methods in marine sediments.
3. Problems and prospects of barite separation methods.
欢迎各位积极参加！
