利用螯（络）合物分解法制备了ＺｎＯ微粉，选用的螯（络）合剂有氢氧化铵、乙二胺四乙酸二钠和巯基丙氨酸。实验结果表明，由于Ｚｎ－ＮＨ３络离子的稳定常数小，所得ＺｎＯ粒子直径大，而当络离子的稳定常数适当时可得到纳米级微粉粒子 The ZnO powder was prepared by the chelate decomposition method. The selected chelating agents were ammonium hydroxide, disodium ethylenediaminetetraacetate and cysteine. The experimental results show that due to the small stability constants Zn-NH3 complex ions, the resulting ZnO particle diameter, and when the complex ions when the stability constant appropriate nano-particles can be obtained