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合成了新显色剂５－氯－甲亚胺Ｈ，并研究了其与硼的反应条件。在ｐＨ５．５的乙酸－乙酸铵缓冲溶液中，显色剂与硼形成２：１的络合物。最大吸收波长为４３０ｎｍ。摩尔吸光系数为５．９５×１０~３Ｌ·ｍｏｌ~（－１）·ｃｍ~（－１）。Ｓａｎｄｅｌｌ灵敏度为０．００１８μｇ·ｃｍ~（－２）。硼量在０～２５μｇ／２５ｍＬ范围内符合比耳定律。用ＥＤＴＡ掩蔽各种干扰离子可直接测定氧化镁样品中的硼。方法快速、准确。
Synthesis of a new reagent 5 - chloro - methyl imine H, and its reaction with boron conditions. In a pH 5.5 acetate-ammonium acetate buffer solution, the color developer forms a 2: 1 complex with boron. The maximum absorption wavelength is 430nm. The molar extinction coefficient is 5.95 × 10 ~ 3L · mol ~ (-1) · cm ~ (-1). The sensitivity of Sandell is 0.0018μg · cm ~ (-2). Beer’s law is obeyed in the range of 0 ~ 25μg / 25mL. Masking various interfering ions with EDTA allows direct determination of boron in magnesium oxide samples. Method is fast and accurate.