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The Contribution of Organic Matter to the Alkaline Reserve of Natural Waters

机译：有机物对天然水碱性储备的贡献

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摘要

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 mu mol/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 mu mol/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 mu atm)and in the dissolved inorganic carbon (an error over 150 mu mol/kg).The maximum absolute contribution of the humic matter (over 3000 mu mol/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/1 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.
机译：利用两种碱度测定法，对日本海，Razdol'naya河口水域和鄂霍次克海沉积物间隙水中有机物（腐殖质）对海水碱性储量的贡献进行了表征。量度：采用Bruevich的方法和与空气平衡的方法。发现日本海的地表水含有约20μmol / kg的有机来源碱度，该值随深度降低两倍。在计算海水碳酸盐系统的实际情况中，该值可以忽略不计。同时，有机碱度对拉兹多纳亚河水域的贡献接近120μmol / kg。在忽略Razdol'naya河口-阿穆尔湾碳酸盐体系的计算中，这可能会导致二氧化碳分压值的严重误差（误差可能超过1500μatm）和溶解的无机碳（误差超过150μmol/ kg）。在鄂霍次克海选定沉积物中的间隙水中发现了腐殖质的最大绝对贡献（超过3000μmol/ kg）。在这些沉积物中，检出的腐殖质浓度高达300 mg / 1。获得的数据表明，确定腐殖质的含量必须是充分分析河口碳酸盐体系和间隙海洋中间隙水的必不可少的条件。沉积物。

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