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海洋中的磷由河流和沙漠输入,我国北部海域由内蒙古西部沙漠-沙尘暴-黄河口-黄渤海构成世界磷循环的一部分。文中采用连续分级提取方法对主要入黄河的乌兰布和沙漠颗粒物磷形态分布特征进行了研究。结果表明:乌兰布和沙漠颗粒物原样中的总磷(TP)含量为740.52μg/g,其主要成分为无机磷(IP),占TP的比例为96.17%;有机磷(Porg)含量为28.13μg/g,占TP的3.80%。在所有不同粒度的沙漠颗粒物中,原生碎屑钙磷(Pdet)含量最高,占总磷的23.50%─65.99%,其次是自生钙磷(Paut),占总磷的20.43%─58.21%;乌兰布和沙漠每年向黄河输送1.1万吨总磷,其中可交换磷为492吨。
Phosphorus in the oceans is input by rivers and deserts. Part of the world phosphorus cycle is formed by the deserts in northern Inner Mongolia - sandstorms, the Yellow River Mouth and the Huang Bohai Sea. In this paper, continuous grading extraction method was used to study the distribution characteristics of phosphorus species in the Ulanbuh Desert and the main Huanghe River. The results showed that the content of total phosphorus (TP) was 740.52μg / g in the original sample of Ulanbuh Desert and its main component was inorganic phosphorus (IP), accounting for 96.17% of TP and Porg was 28.13 μg / g, accounting for 3.80% of TP. Among all the different sizes of desert particles, the content of native detritus Pdet was the highest, accounting for 23.50% -65.99% of the total phosphorus, followed by Paut, accounting for 20.43% -58.21% of the total phosphorus. Lamb and desert each year to the Yellow River transporting 11,000 tons of total phosphorus, of which 492 tons of exchangeable phosphorus.