(Table 1) Elementary composition and concentration of low-polarity dissolved organic matter in waters of the Northwest Indian Ocean and Red Sea

Study of elementary composition of chloroform extracts of dissolved organic matter from water of the Northwestern Indian Ocean has demonstrated that most of specimens have composition close to that of lipids, except that they have practically no nitrogen and phosphorus. Some of extracts have low carbon and hydrogen content. An assumption that low-polarity dissolved organic matter in such waters has lipid composition is not appropriate. It is shown that the proton magnetic resonance method is applicable for determining elementary composition of low-polarity dissolved organic matter.

对印度洋西北部水域溶解有机质（dissolved organic matter）的氯仿提取物（chloroform extracts）开展的元素组成研究显示，多数样品的组成与脂质（lipids）近似，但此类提取物几乎不含氮与磷。部分提取物的碳、氢含量偏低。此前认为此类水域中的低极性溶解有机质具有脂质组成的假设并不成立。研究证实，质子磁共振（proton magnetic resonance）法可用于测定低极性溶解有机质的元素组成。