Huo Shouliang, Zan Fengyu, Xi Beidou, Li Qingqin, Zhang Jingtian
Chinese Research Academy of Environmental Science, Beijing, 100012, China.
J Environ Monit. 2011 Apr;13(4):1088-95. doi: 10.1039/c0em00696c. Epub 2011 Feb 25.
The characteristics of organic phosphorus (P(o)) fractions in the sediments of nine lakes from the middle and lower reaches of the Yangtze River region, Yungui Plateau, Qinghai-Tibet Plateau, Northeast China Region, and Mongolia-Xinjiang Plateau, China were investigated and the differences of the different lakes on P fractionation was discussed. The results indicated that organic matter (OM) showed significant positive correlations with P(o) in sediment samples, and the rank order of the P(o) fractions was: residual P(o) > HCl-P(o) > fulvic acid-P(o) > humic acid-P(o) > NaHCO(3)-P(o) with mean relative proportions 7.4 : 3.4 : 2.4 : 1.7 : 1.0. The labile and moderately labile P(o) were the main fractions in the sediments for shallow eutrophic lakes except for Lake Qilu, however, nonlabile P(o) was dominant in the sediments from deep lakes. Labile P(o) was significantly correlated with total phosphorus (TP), inorganic phosphorus (P(i)), P(o), NaHCO(3)-P(i), HCl-P(i) and NaOH-P(i), and the nonlabile P(o) was significantly and positively related to OM, TP, P(o) and NaOH-P(i).
对中国长江中下游地区、云贵高原、青藏高原、东北地区以及蒙新高原九个湖泊沉积物中有机磷（P(o)）组分特征进行了研究，并探讨了不同湖泊在磷分级方面的差异。结果表明，沉积物样品中有机质（OM）与P(o)呈显著正相关，P(o)各组分的排序为：残余P(o)＞HCl-P(o)＞富里酸-P(o)＞腐殖酸-P(o)＞NaHCO₃-P(o)，平均相对比例为7.4 : 3.4 : 2.4 : 1.7 : 1.0。除杞麓湖外，浅富营养化湖泊沉积物中不稳定和中度不稳定的P(o)为主要组分，而深湖沉积物中以非不稳定P(o)为主。不稳定P(o)与总磷（TP）、无机磷（P(i)）、P(o)、NaHCO₃-P(i)、HCl-P(i)和NaOH-P(i)显著相关，非不稳定P(o)与OM、TP、P(o)和NaOH-P(i)显著正相关。
