毛细管电泳用于溶液中无机离子的分析具有分离性能高、分离速度快、分析费用低、操作简单等优点,但精确性稍低。通过各种校准方法可部分地克服这一缺点。毛细管电泳极高的分离性能和极快的分离速度使土壤养分快速以至准实时分析成为可能,但其在土壤无机离子分析上的研究仍显不足,目前需要解决的问题之一是提高样品的前处理速度及对磷的提取能力。这些问题的解决将有利于提高土壤养分分析效率,促进毛细管电泳法在土壤养分分析方面的应用。

When applied in analyzing inorganic ions in solution, the technology of capillary electrophoresis is high in resolution, fast in separation, low in cost and simple in operation, but low in reproductivity, which, however, can be partly corrected by readjusting composition of the electrolyte solution, rinsing capillaries and some other ways to calibrate the device. The high resolution and rapid separation of capillary electrophoresis makes possible rapid or even real-time analysis of soil nutrition. However, the research on inorganic ion analysis in soil with capillary electrophoresis is still far from enough. The most urgent problems at present are how to speed up pre-treatment of soil samples and improve P extraction capacity. Solution of these problems will raise the efficiency of soil nutrition analysis and help modernize the technology for soil nutrition analysis.

中国科学院创新项目(KZCX2-404)、国家高技术研究发展计划(863)课题(2003AA209010)、国家重点基础研究发展规划(973)课题(G1999011803)资助。