中华人民共和国国家环境保护标准HJ889-2017土壤阳离子交换量的测定三氯化六氨合钴浸提-分光光度法Soilquality—Determinationofcationexchangecapacity（CEC）—Hexamminecobalttrichloridesolution-Spectrophotometricmethod（发布稿）本电子版为发布稿。请以中国环境出版社出版的正式标准文本为准。2017-12-17发布2018-02-01实施环境保护部发布i目次前言.................................................................................................................................................ii1适用范围.........................................................................................................................................12规范性引用文件.............................................................................................................................13术语和定义.....................................................................................................................................14方法原理.........................................................................................................................................15干扰和消除.....................................................................................................................................16试剂和材料.....................................................................................................................................27仪器和设备.....................................................................................................................................28样品.................................................................................................................................................29分析步骤.........................................................................................................................................210结果计算与表示...........................................................................................................................311精密度和准确度......................................................
