硼是植物营养必需的微量元素,但含量高于一定水平即抑制植物生长,成为有害元素,因此土壤农化及环化工作者常把硼列入重要分析项目。 测定土壤水溶性硼常用姜黄素法,此法要在严格控制的显色条件下进行,否则难以保证良好的再现性。 1961年Caplle首先提出用甲亚胺—H(Azomethi-ne-H)法测定硼之后,Basson,Edwards用甲亚胺—H连续流动分析法测定了植物、河水、灌溉水及废水中的硼,均获得良好结果。袁可能应用甲亚胺—H比色法测定了植物、土壤中硼,该法在分析前不予先合成甲亚胺—H,而是在测样时分别加入H—酸钠盐及水杨醛,静止一小时后测定。1981年巴西的Krug等应用甲方亚胺—H流动注射分光光度法测定了植物中硼,显著地提高了分析速度,达到每小时分析60样的速度。本文用甲亚胺—H流动注射分光光度 Boron is a trace element essential for plant nutrition, but higher than a certain level inhibits the growth of plants and becomes a harmful element. Therefore, boron is often included in important analytical programs by soil agrochemicals and cyclization workers. Determination of soil soluble boron commonly used curcumin method, this method should be under strict control of color conditions, or difficult to ensure good reproducibility. After Caplle first proposed the boron measurement by the Azomethi-ne-H method in 1961, Basson and Edwards measured boron in plants, river water, irrigation water, and wastewater using the method of flow-through analysis with azomethine-H. Good results were obtained. Yuan may use azomethine-H colorimetric determination of plants, soil boron, the method before analysis without the synthesis of azomethine-H, but the sample was added sodium H-acid and salicin Aldehyde, measured at rest one hour later. In 1981, Krug et al. Used flow-injection spectrophotometry to determine boron in plants and significantly increased the speed of analysis to 60 samples per hour. In this paper, azomethine-H flow injection spectrophotometry