Distribution and dissolution of several forms of phosphorus in coastal marine-sediments
Distribution and dissolution of several forms of phosphorus in coastal marine-sediments
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发表时间：
1987
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通讯作者：
H. Yamada;M. Kayama
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作者：
H. Yamada;M. Kayama
简历Hisashi YAMADA a，Mitsu KAYAMA B a农林水产省东海区域渔业研究实验室水污染科，Arasaki，永井，横须贺，238-03，日本。B海洋生物化学实验室，应用生物科学系，广岛大学，Midori-Machi，Fukuyama，720，日本。收到日期：1/9/86年1月9日，修订日期：1987年1月23日，接受日期：1987年3月3日。以日本濑户内海Hiuchi Nada、Suho Nada和别府湾3个海区的沉积物为研究对象，将沉积物中的磷分为5种形态：Sol-P、AI-P、Fe-P、Ca-P和Org-P。通过室内试验研究了pH值和厌氧条件对磷形态溶解的影响。通过比较原位通量和计算的扩散通量，沉积物-水界面的磷酸盐释放的重要性被认为是。磷的主要形态为有机磷，其含量不随沉积深度的变化而变化。Ca-P也是无机磷的主要形式，其浓度不随深度变化。Al-P和Fe-P含量在沉积柱的深层逐渐降低。分布的Severa！近岸海洋沉积物中磷的存在形态与大洋沉积物中不同。沉积物中T-P、Org-P、Al-P、Fe-P、C和N的含量具有较好的相关性，而Ca-P的分布相关性不好。Org-P在所研究的pH和厌氧状态条件下不溶解。Al-P和Fe-P在弱厌氧和强厌氧条件下的溶解情况相似。沉积物-水界面上沉积的金属磷酸盐的溶解对磷酸盐的释放起着重要的作用，夏季约有60%的磷酸盐释放依赖于这种溶解过程。海洋Acta，1987，10，3，311-321。磷在海洋沉积物中的再分配和溶解作用在日本濑户内海的Hiuchi Nada、Suho Nada和别府湾三个地区的沉积物中，海洋沉积物中的磷分为5种分子形式，即Sol-P、Al-P、Fe-P、Ca-P和Org-P。pH值和厌氧条件对磷化合物溶解的影响在实验室进行了埃特研究。水-沉积物界面在磷酸盐释放中的作用与原位通量和扩散通量的计算值相比有埃特。磷的主要成分Org-P的浓度与沉积物的深度无关，也不存在无机磷Ca-P不可抗力的另一种策勒。Al-P和Fe-P的浓度在沉积物柱的深槽中逐渐降低。磷在海洋沉积物和海洋沉积物中的分配是不同的。在0399-1784/87/03 311 11/$3.1 0/Gauthier-Villars 311 H的实验条件下，T-P、Org-P、Al-P、Fe-P、Carbone和azote的浓度在所有样品中均很高，但迈斯磷的策勒不高。山田M. KAYAMA pH et d'anaerobie，Org-P n'est pas soluble.铝磷和铁磷在厌氧条件下是可溶的。在水-沉积物界面上溶解磷酸盐金属沉淀物对磷酸盐的释放有意义，不依赖于埃特等现象的60%。海洋Acta，1987，10，3，311-321。
RESUME Hisashi YAMADA a, Mitsu KAYAMA b a Water Pollution Division, Tokai Regional Fisheries Research Laboratory, Ministry of Agriculture, Forestry and Fisheries, Arasaki, Nagai, Yokosuka, 238-03, Japan. b Laboratory of Marine Biochemistry, Faculty of Applied Biological Science, Hiroshima University, Midori-Machi, Fukuyama, 720, Japan. Received 1/9/86, in revised form 23/1/87, accepted 3/3/87. Phosphorus in coastal marine sediments was divided into five forms: Sol-P, AI-P, Fe-P, Ca-P and Org-P. The distribution of phosphorus forms was investigated with sediments from three regions: Hiuchi Nada, Suho Nada and Beppu Bay, in the Seto Inland Sea, Japan. The effects of pH and anaerobie condition on the dissolution of phosphorus forms were studied in laboratory experiments. By comparing in situ flux with calculated diffusive flux, the importance of the sediment-water interface to phosphate liberation was considered. The major form of phosphorus was Org-P, which did not change in concentration with sediment depth. Ca-P was also a major form of inorganic phosphate and did not change in concentration with depth. The concentration of Al-P and Fe-P decreased gradually in the deeper layer of the sediment column. The distribution of severa! forms of phosphorus in coastal marine sediments differed from that in oceanic sediments. The concentration of T-P, Org-P, Al-P, Fe-P, carbon and nitrogen correlated with each other, but the distribution of Ca-P in sediments did not correlate well. Org-P did not dissolve under the investigated conditions of pH and anaerobie state. Al-P and Fe-P dissolved under weak and strong anaerobie conditions alike. The dissolution of precipitated metal phosphate at the sediment-water interface was significant for the liberation of phosphate, sorne 60% of which was dependent on this liberation process in summer. Oceanol. Acta, 1987, 10, 3, 311-321. Repartition et dissolution de plusieurs composes du phosphore dans les sediments marins cotiers Le phosphore present dans les sediments marins cotiers est divise en 5 formes moleculaires, Sol-P, Al-P, Fe-P, Ca-P et Org-P dont la repartition a ete etudiee dans les sediments de trois regions, Hiuchi Nada, Suho Nada et Beppu Bay, dans la mer interieure Seto, au Japon. Les effets du pH et des conditions anaerobies sur la dissolution des composes du phosphore ont ete etudies experimentalement en laboratoire. Le role de l'interface eau-sediment dans la liberation des phosphates a ete estime en comparant le flux in situ et la valeur calculee du flux de diffusion. La concentration du principal compose du phosphore, Org-P, ne varie pas avec la profondeur du sediment, pas plus que celle d'une autre forme majeure du phosphate inorganique, Ca-P. Les concentrations en Al-P et Fe-P diminuent progressivement dans la couche profonde de la colonne sedimentaire. La repartition de plusieurs composes du phosphore differe dans les sediments marins cotiers et dans les sediments oceaniques. Les concentrations en T-P, Org-P, Al-P, Fe-P, carbone et azote sont bien correlees entre elles, mais pas celle de Ca-P. Dans les conditions experimentales de 0399-1784/87/03 311 11/$ 3.1 0/@ Gauthier-Villars 311 H. YAMADA. M. KAYAMA pH et d'anaerobie, Org-P n'est pas soluble. Al-P et Fe-P sont solubles dans des conditions d'anaerobie faibles et fortes. La dissolution du phosphate metallique precipite a l'interface eau-sediment est significative pour la liberation du phosphate, dont 60% dependent de ce phenomene en ete. Oceanol. Acta, 1987, 10, 3, 311-321.