内蒙古西部入黄河沙漠颗粒物磷形态研究

用改进的Ruttenberg分析方法对不同粒径黄河上游主要入河沙漠颗粒物磷的形态分布特征进行了研究.乌兰布和沙漠和库布齐沙漠颗粒物中磷以自生钙磷为主,其次是碎屑磷.黑风口沙样中总磷含量较高,磷也以自生钙磷为主,其次是有机磷.计算了沙漠颗粒物中生物可利用磷的含量.乌兰布和沙漠每年向黄河输送约1.1万吨总磷,其中可交换磷为492t.库布齐沙漠每年向黄河输送约9200t总磷,其中可交换磷约为688L

SPECIATION OF PHOSPHORUS IN INFLOW SAND PARTICLES OF THE YELLOW RIVER IN WESTERN INNER MONGOLIA

In this paper, an improved Ruttenberg analytical method was used to study the speciation of phosphorus in the inflow sand of the Yellow River. In samples from Wulanbuhe and Kubuqi desert, Ca-bound phosphorus is the dominant species, and residual phosphorus is secondary. Total phosphorus content is higher in samples from Heifengkou. Ca-bound phosphorus is also the dominant species, followed by organic phosphorus. The bio-available species of phosphorus in the sands are calculated. The Wulanbuhe desert transports 11000 tons of TP into the Yellow River annually, and the content of exchangeable phosphorus is 492 tons. The Kubuqi desert transports 9200 tons of TP into the Yellow River annually, and content of exchangeable phosphorus is 688 tons.