【摘要】：采用TPTZ(2,4,6三吡啶-s-三嗪,C18H12N6)方法對2015年6月采集的南海北部表層海水,以及珠江口東側(cè)S斷面進行了碳水化合物的分析。結(jié)果表明,溶解單糖(dissolved monosaccharide,MCHO)、溶解多糖(dissolved polysaccharide,PCHO)及溶解總糖(total dissolved carbohydrate,TCHO)的濃度范圍分別是0.22~13.66,1.51~21.02和2.63~26.24μmol C/L。表層海水MCHO、TCHO和PCHO具有相似的分布特點:近岸高,遠海低;高值區(qū)大多分布在近岸受陸地影響較大的海區(qū)。S斷面分析表明,該區(qū)域海水分層明顯,MCHO、TCHO和PCHO分布較為相似,上層濃度高于下層濃度,濃度最高值出現(xiàn)在上層海水,部分站位受珠江沖淡水影響較大。表層海水的Chl a(chlorophyll a)與DOC(dissolved organic carbon)濃度分布大體上也呈現(xiàn)類似特點,不同之處在于水平分布方面Chl a的濃度分布與鹽度分布更為類似,垂直分布方面在真光層以下Chl a與DOC的濃度分布無高值區(qū)。同時結(jié)果也表明二者的濃度分布對MCHO、TCHO和PCHO的分布有較大影響。
[Abstract]:A TPTZ method was used to analyze carbohydrates in the surface waters of the northern South China Sea collected in June 2015 and the S section east of the Pearl River Estuary. The results showed that the concentration ranges of dissolved monosaccharide, dissolved polysaccharide and total sugar (total dissolved carbohydrate TCHO were 0.22 ~ 13.6C ~ (-1) C ~ (-1 / L) and 2.63 ~ 26.24 渭 mol / C ~ (-1 / L), respectively. The distribution characteristics of MCHO TCHO and PCHO in the surface seawater are similar: the near shore is high, the far sea is low, and the high value area is mostly distributed in the sea area. S section analysis shows that the distribution of MCHOTCHO and PCHO in the sea water stratification in this area is obviously similar to that of PCHO. The concentration of the upper layer is higher than that of the lower layer, and the highest concentration appears in the upper sea water, and some stations are greatly affected by the Pearl River flushing fresh water. The concentration distributions of Chl a (chlorophyll a) and DOC (dissolved organic carbon) in surface seawater are similar in general, but the concentration distribution of Chla is more similar to that of salinity in horizontal distribution. In the vertical distribution, there is no high value region of concentration distribution of Chla and DOC below the true light layer. The results also show that their concentration distribution has great influence on the distribution of MCHO TCHO and PCHO.
【作者單位】： 中國海洋大學化學化工學院;青島海洋科學與技術(shù)國家實驗室海洋生態(tài)與環(huán)境科學功能實驗室;
【基金】：山東省“泰山學者”建設(shè)工程研究專項(2011) 青島海洋科學與技術(shù)國家實驗室“鰲山人才”計劃項目(2015ASTP)
【分類號】：P734

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