CAJ | 학술논문

利用25次南极科考获得的海水样,采用原子分光光度法(AAS)测定了海水中溶解态镉的含量,研究了东南极普里兹湾不同空间与时间尺度下海水中溶解态镉的分布特征.并利用同航次相关的营养盐、叶绿素a等数据,分析了影响海水中溶解态镉分布的主要因素.研究结果显示,普里兹湾表层海水中溶解态镉的分布与叶绿素a具有良好的相关性,生物过程是影响普里兹湾表层海水中溶解态镉平面分布的主要影响因素.表层海水中镉与磷具有良好的线性关系,冰架边缘的海冰融化可能是造成冰架边缘Cd/P比值高的主要原因.溶解态镉在垂直分布上表现出近似磷酸盐等营养盐的分布趋势.普里兹湾海水中溶解态镉的浓度在时间序列上的变化不大,潮汐可能是影响海水中镉浓度微弱变化的主要因素.
이용25차남겁과고획득적해수양,채용원자분광광도법(AAS)측정료해수중용해태력적함량,연구료동남겁보리자만불동공간여시간척도하해수중용해태력적분포특정.병이용동항차상관적영양염、협록소a등수거,분석료영향해수중용해태력분포적주요인소.연구결과현시,보리자만표층해수중용해태력적분포여협록소a구유량호적상관성,생물과정시영향보리자만표층해수중용해태력평면분포적주요영향인소.표층해수중력여린구유량호적선성관계,빙가변연적해빙융화가능시조성빙가변연Cd/P비치고적주요원인.용해태력재수직분포상표현출근사린산염등영양염적분포추세.보리자만해수중용해태력적농도재시간서렬상적변화불대,조석가능시영향해수중력농도미약변화적주요인소.
In order to better understand the spatial and temporal distribution of dissolved cadmium in Prydz Bay, east Antarctica, seawaters were sampled by CTD during the CHINARE-25 cruise (Oct. 2008 - Apr. 2009) and the concentrations of cadmium were analyzed by AAS (Atomic Absorption Spectrometry) in the clean laboratory. Together with the data of macronutrients and chl.a from the same cruise, the relationship between cadmium and biological process was studied. The results showed that the concentrations of Cd in the surface water had a good relationship with chl.a and biologicl process was the important factor that influenced the distribution of dissolved Cd in the surface water. Linear relationship was found between dissolved Cd and phosphate in the surface water and the high ratio of Cd/P at the edge of ice shelf was most probably due to ice melting, vertical distribution of Cd was similar to those of macronutdent such as phosphate and was affected by decomposition of organic particals. The temporal change of dissolved Cd in upper layer was slight and tide probably had influence on the change.