A new triazene reagent, 1-（4-antipyrine）-3-（2, 4, 6-tribromophenyl）-triazene （ABPT） was synthesized and characterized by elementary analysis and IR-speetrascopy. In a borax buffer of pH 10. 0 and in the presence of Triton X-100, a ternary complex was formed among Ni（ Ⅱ ）, ABPT and Triton X-100, having its absorption maximum at 515 nm, and molar absorptivity of 2. 1 × 10^5L ·mol^-1 · cm^-1. Linearity range of Ni（ Ⅱ ） was kept from 20. 0 to 400 μg · L^-1 , with value of detection limit （3s/k） of 8 μg · L^-1. Samples of domestic gabbage and water were analyzed by the proposed method, giving results in consistency with those found by AAS, and values of RSD＇s （n=6） found were less than 5%. Values of recovery found were in the range of 102. 5% to 105.0%.%合成并鉴定了一种新的三氮烯试剂1-（4-安替比林）-3-（2，4，6-三溴苯基）-三氮烯（ABPT），研究了该试剂与镍（Ⅱ）的显色反应条件。在pH10．0的硼砂-氢氧化钠介质中，在Triton X-100存在下，ABPT与镍（11）发生灵敏的显色反应。络合物的最大吸收波长为515nm，表观摩尔吸光率为2．1×10^5L·mol^-1·cm^-1。镍（Ⅱ）质量浓度在20．0～400μg·L^-1之间呈线性，检出限（3s／k）为8μg·L^-1，方法用于生活垃圾、水样品中痕量镍（Ⅱ）的测定，结果与原子吸收光谱法的测定结果相符，测定值的相对标准偏差（n=6）均小于5％，回收率在102．5％～105．0%之间。
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