The contribution of organic matter to the alkaline reserve of natural waters
The contribution of organic matter to the alkaline reserve of natural waters
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有机质对天然水体碱储备的贡献
DOI：
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发表时间：
2006
期刊：
影响因子：
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通讯作者：
E. Shkirnikova
中科院分区：
文献类型：
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作者：
P. Tishchenko;K. Wallmann;N. A. Vasilevskaya;T. I. Volkova;V. I. Zvalinskii;N. D. Khodorenko;E. Shkirnikova
有机物（腐殖化合物）的贡献，在日本海的海水中的碱性储备，在Razdol'naya河河口沃茨，并在鄂霍次克海沉积物的间隙沃茨的特点是使用两个程序的碱度测量：Bruevich的方法和样品与空气平衡。结果发现，日本海表层沃茨中有机物的碱度约为20 μmol/kg，随着深度增加，碱度值降低了两倍。在大多数海水碳酸盐体系计算的实际情况下，可以忽略该值。同时，有机碱度对Razdol'naya河沃茨的贡献接近120 μmol/kg。结果表明，在计算拉兹多尔纳亚河口-阿穆尔湾碳酸盐体系时，如果忽略该值，可能会导致二氧化碳分压值（误差可能超过1500 μatm）和溶解无机碳值（误差超过150 μmol/kg）的粗差。腐殖物质的最大绝对贡献（超过300 μmol/kg）被发现的间隙沃茨在选定的鄂霍次克海沉积物。在这些沉积物的间隙沃茨中，腐殖物质浓度高达300毫克/升。所获得的数据表明，腐殖物质的量的测定必须是一个必要的条件，充分分析河口碳酸盐系统和减少海洋沉积物中的间隙水。
The contribution of organic matter (humic compounds) to the alkaline reserve of seawater in the Sea of Japan, in the Razdol’naya River estuarine waters, and in the interstitial waters of the sediments of the Sea of Okhotsk was characterized using two procedures for alkalinity measurements: the method by Bruevich and that of the sample equilibrium with air. It was found that the surface waters of the Sea of Japan contained about 20 μmol/kg of alkalinity of organic origin, and this value twofold decreased with depth. For most of the actual cases of the calculations of the seawater carbonate system, this value may be neglected. Meanwhile, the contribution of organic alkalinity to the Razdol’naya River waters amounts to nearly 120 μmol/kg. It was shown that, if this value in the calculation of the carbonate system of the Razdol’naya River estuary-Amur Bay is neglected, this may cause gross errors in the values of the partial pressure of carbon dioxide (the error might be over 1500 μatm) and in the dissolved inorganic carbon (an error over 150 μmol/kg). The maximum absolute contribution of the humic matter (over 300 μmol/kg) was found for the interstitial waters in selected sediments of the Sea of Okhotsk. In the interstitial waters of these sediments, humic matter concentrations as high as 300 mg/l were detected. The data obtained show that the determination of the amount of humic matter must be an indispensable condition for an adequate analysis of estuarine carbonate systems and of the interstitial water in reduced marine sediments.