用分光光度法、电化学方法试验了几种常用的市售阻垢剂及取自电厂的水质稳定剂对铜、铁、锌、镍离子的络合作用和对铜管的缓蚀作用；用电化学方法测试了几种 ＨＳｎ７０－１Ａ新铜管试样在多种冷却水中的耐蚀性。试验结果 表明，这些阻垢剂和水质稳定剂大多对铜离子、锌离子或（和）铁离子有较强的络合作用；常规使用浓度下这些水质稳定剂不一定有缓蚀作用；提出必须经试验确定具体使用条件下水质稳定剂的“上限浓度”和缓蚀剂的“下限浓度”；新铜管试样的耐蚀性差别主要归因于试样出厂时内壁表面膜的状况。 Several commonly used commercial scale inhibitors and water quality stabilizers from power plants were tested by spectrophotometry and electrochemical methods for the complexation of copper, iron, zinc and nickel ions and corrosion inhibition of copper pipes. Electrochemical methods were used to test the corrosion resistance of several new HSn70-1A copper tubes in a variety of cooling water. The test results show that most of these scale inhibitors and water stabilizers have a strong complexation with copper ions, zinc ions or (and) iron ions; these water stabilizers do not necessarily have a corrosion inhibition effect under conventional use concentrations; The “upper limit concentration” of the water stabilizer and the “lower limit concentration” of the corrosion inhibitor under specific conditions were determined through experiments. The difference of corrosion resistance of the new brass sample was mainly attributed to the condition of the inner wall surface membrane when the sample was shipped.