摘要
对 1998年 9月和 1999年 5月渤海航次和 1999年 8月北黄海航次所采集的柱状沉积物和表层沉积物样品进行了P形态的六步连续提取分析 ,分析了各种形态P在表层及垂直方向上的分布特征。并通过对沉积物充空气和N2 条件下培养前后各步形态P的测定 ,认识各步形态P培养前后的变化以及不同的氧化还原环境对各步形态P的影响。结果表明 :从渤海到北黄海总P的含量逐步降低。碎屑磷灰石的含量在六步中含量最高 ,约占 5 0 %左右 ,其次是非活性有机磷 ,约占 2 0 % ,其他几步含量较小 ;充N2 培养沉积物样品中碎屑磷灰石的含量要比充空气的低 。
Surface and core sediment samples were collected in September 1998 and May 1999 in the Bohai Sea, August 1999 in the North Yellow Sea. A six steps sequential extraction technique was used for the sediment samples. The contents of total phosphorus decreased gradually from the Bohai Sea to the Yellow Sea. The contents of edtrital apatite were the highest in the six phosphorus forms accounting for ca. 50%, followed by refractory organic phosphorus accounting for ca. 20%, then authigenic apatite, CaCO 3 bound inorganic phosphorus and leachable organic phosphorus, adsorbed inorganic phosphorus, iron bound inorganic phosphorus, CaCO 3 adsorbde inorganic phosphorus, loosely adsorbed inorganic phosphorus. In the incubated core sediment samples bubbled with air or nitrogen, the contents of phosphorus fractions in sediment incubated with nitrogen were higher than or similar to that with air except detrital apatite.
出处
《海洋环境科学》
CAS
CSCD
北大核心
2001年第2期18-23,共6页
Marine Environmental Science
基金
国家重点基础研究专项经费资助项目! (G19990 4370 5 )
国家自然科学基金!资助项目 (49736 190 )
山东省自然科学基金!资助项目 (
关键词
渤海
北黄海
沉积物
磷形态
分布特征
Bohai Sea
North Yellow Sea
sediment
phosphorus speciation
