GBW(E)070356 土壤有效态成分分析标准物质
                     

                                    
                                        
                                            
                                                标准值
                                                不确定度
                                                单位
                                                CAS
                                                备注
                                        

                                    
                                    

                                        
                                            有机质
                                                114
                                                12
                                                质量分数（g/kg）
                                               
                                               
                                        


                                    
                                    

                                        
                                            全氮
                                                6.2
                                                0.4
                                                质量分数（g/kg）
                                               
                                               
                                        


                                    
                                    

                                        
                                            水溶性盐总量
                                                2.1
                                                0.3
                                                质量分数（g/kg）
                                               
                                               
                                        


                                    
                                    

                                        
                                            水溶性钠离子Na+
                                                0.043
                                                0.006
                                                质量分数（g/kg）
                                               
                                               
                                        


                                    
                                    

                                        
                                            水溶性钾离子K+
                                                0.047
                                                0.005
                                                质量分数（g/kg）
                                               
                                               
                                        


                                    
                                    

                                        
                                            水溶性钙离子Ca2+
                                                0.32
                                                0.03
                                                质量分数（g/kg）
                                               
                                               
                                        


                                    
                                    

                                        
                                            水溶性镁离子Mg2+
                                                0.063
                                                0.005
                                                质量分数（g/kg）
                                               
                                               
                                        


                                    
                                    

                                        
                                            水溶性氯根Cl-
                                                (0.05)
                                               
                                                质量分数（g/kg）
                                               
                                                （）为参考值，不确定度为能扩展不确定度（k=2）。
                                        


                                    
                                    

                                        
                                            水溶性硫酸根SO42-
                                                0.32
                                                0.04
                                                质量分数（g/kg）
                                               
                                               
                                        


                                    
                                    

                                        
                                            水溶性碳酸氢根HCO3-
                                                0.46
                                                0.07
                                                质量分数（g/kg）
                                               
                                               
                                        


                                    
                                    

                                        
                                            游离铁Fe2O3
                                                16
                                                2
                                                质量分数（g/kg）
                                               
                                               
                                        


                                    
                                    

                                        
                                            水解性氮
                                                0.92
                                                0.10
                                                质量分数（g/kg）
                                               
                                               
                                        


                                    
                                    

                                        
                                            pH无量纲
                                                5.95
                                                0.09
                                                质量分数（g/kg）
                                               
                                               
                                        


                                    
                                    

                                        
                                            可交换酸度cmol/kg
                                                1.5
                                                0.3
                                                质量分数（g/kg）
                                               
                                               
                                        


                                    
                                    

                                        
                                            水解性酸度cmol(+)/kg
                                                12
                                                2
                                                质量分数（g/kg）
                                               
                                               
                                        


                                    
                                    

                                        
                                            阳离子交换量cmol(+)/kg
                                                49
                                                3
                                                质量分数（g/kg）
                                               
                                               
                                        


                                    
                                    

                                        
                                            交换性盐基总量cmol(+)/kg
                                                38
                                                4
                                                质量分数（g/kg）
                                               
                                               
                                        


                                    
                                    

                                        
                                            交换性钙cmol(1/2Ca2+)/kg
                                                31
                                                3
                                                质量分数（g/kg）
                                               
                                               
                                        


                                    
                                    

                                        
                                            交换性镁cmol(1/2Mg2+)/kg
                                                5.7
                                                0.6
                                                质量分数（g/kg）
                                               
                                               
                                        


                                    
                                    

                                        
                                            交换性钠cmol(Na+)/kg
                                                0.33
                                                0.06
                                                质量分数（g/kg）
                                               
                                               
                                        


                                    
                                    

                                        
                                            交换性钾cmol(K+)/kg
                                                0.97
                                                0.05
                                                质量分数（g/kg）
                                               
                                               
                                        


                                    
                                    

                                        
                                            电导率mS/cm
                                                0.50
                                                0.03
                                                质量分数（g/kg）
                                               
                                               
                                        


                                    
                                    

                                        
                                            有效磷P
                                                27
                                                4
                                                质量分数(mg/kg)
                                               
                                               
                                        


                                    
                                    

                                        
                                            速效钾K
                                                367
                                                30
                                                质量分数(mg/kg)
                                               
                                               
                                        


                                    
                                    

                                        
                                            缓效钾K
                                                855
                                                95
                                                质量分数(mg/kg)
                                               
                                               
                                        


                                    
                                    

                                        
                                            有效硫S
                                                95
                                                11
                                                质量分数(mg/kg)
                                               
                                               
                                        


                                    
                                    

                                        
                                            有效硅Si
                                                591
                                                74
                                                质量分数(mg/kg)
                                               
                                               
                                        


                                    
                                    

                                        
                                            有效硼B
                                                0.82
                                                0.13
                                                质量分数(mg/kg)
                                               
                                               
                                        


                                    
                                    

                                        
                                            有效钼Mo
                                                0.49
                                                0.08
                                                质量分数(mg/kg)
                                               
                                               
                                        


                                    
                                    

                                        
                                            有效铜Cu（DTPA）
                                                0.66
                                                0.13
                                                质量分数(mg/kg)
                                               
                                                （DTPA）为二乙烯三胺五乙酸浸提，不确定度为能扩展不确定度（k=2）。
                                        


                                    
                                    

                                        
                                            有效锌Zn（DTPA）
                                                2.3
                                                0.5
                                                质量分数(mg/kg)
                                               
                                                （DTPA）为二乙烯三胺五乙酸浸提，不确定度为能扩展不确定度（k=2）。
                                        


                                    
                                    

                                        
                                            有效铁Fe（DTPA）
                                                393
                                                41
                                                质量分数(mg/kg)
                                               
                                                （DTPA）为二乙烯三胺五乙酸浸提，不确定度为能扩展不确定度（k=2）。
                                        


                                    
                                    

                                        
                                            有效锰Mn（DTPA）
                                                116
                                                30
                                                质量分数(mg/kg)
                                               
                                                （DTPA）为二乙烯三胺五乙酸浸提，不确定度为能扩展不确定度（k=2）。
                                        


                                    
                                    

                                        
                                            有效镉Cd（DTPA）
                                                0.091
                                                0.018
                                                质量分数(mg/kg)
                                               
                                                （DTPA）为二乙烯三胺五乙酸浸提，不确定度为能扩展不确定度（k=2）。
                                        


                                    
                                    

                                        
                                            有效铅Pb（DTPA）
                                                (0.12)
                                               
                                                质量分数(mg/kg)
                                               
                                                （）为参考值，（DTPA）为二乙烯三胺五乙酸浸提，不确定度为能扩展不确定度（k=2）。
                                        


                                    
                                    

                                        
                                            有效镍Ni（DTPA）
                                                1.2
                                                0.3
                                                质量分数(mg/kg)
                                               
                                                （DTPA）为二乙烯三胺五乙酸浸提，不确定度为能扩展不确定度（k=2）。
                                        


                                    
                                    

                                        
                                            有效铬Cr（DTPA）
                                                0.033
                                                0.010
                                                质量分数(mg/kg)
                                               
                                                （DTPA）为二乙烯三胺五乙酸浸提，不确定度为能扩展不确定度（k=2）。
                                        


                                    
                                    

                                        
                                            有效钴Co（DTPA）
                                                1.3
                                                0.2
                                                质量分数(mg/kg)
                                               
                                                （DTPA）为二乙烯三胺五乙酸浸提，不确定度为能扩展不确定度（k=2）。
                                        


                                    
                                    

                                        
                                            有效硒Se（KH2PO4）
                                                0.046
                                                0.011
                                                质量分数(mg/kg)
                                               
                                                （KH2PO4）为磷酸二氢钾浸提，不确定度为能扩展不确定度（k=2）。
                                        


                                    
                                    

                                        
                                            交换性锰Mn
                                                587
                                                81
                                                质量分数(mg/kg)
                                               
                                               
                                        


                                    
                                    

                                        
                                            水溶态氟F
                                                4.7
                                                0.8
                                                质量分数(mg/kg)
                                               
                                               
                                        


                                    
                                    

                                        
                                            有效铜Cu（HCl）
                                                0.28
                                                0.03
                                                质量分数(mg/kg)
                                               
                                                （HCl）为稀盐酸浸提，不确定度为能扩展不确定度（k=2）。
                                        


                                    
                                    

                                        
                                            有效锌Zn（HCl）
                                                10.4
                                                1.3
                                                质量分数(mg/kg)
                                               
                                                （HCl）为稀盐酸浸提，不确定度为能扩展不确定度（k=2）。
                                        


                                    
                                    

                                        
                                            有效铁Fe（HCl）
                                                303
                                                32
                                                质量分数(mg/kg)
                                               
                                                （HCl）为稀盐酸浸提，不确定度为能扩展不确定度（k=2）。
                                        


                                    
                                    

                                        
                                            有效锰Mn（HCl）
                                                820
                                                130
                                                质量分数(mg/kg)
                                               
                                                （HCl）为稀盐酸浸提，不确定度为能扩展不确定度（k=2）。
                                        


                                    
                                    

                                        
                                            有效镉Cd（HCl）
                                                0.13
                                                0.03
                                                质量分数(mg/kg)
                                               
                                                （HCl）为稀盐酸浸提，不确定度为能扩展不确定度（k=2）。
                                        


                                    
                                    

                                        
                                            有效铅Pb（HCl）
                                                (0.3)
                                               
                                                质量分数(mg/kg)
                                               
                                                （）为参考值，（HCl）为稀盐酸浸提，不确定度为能扩展不确定度（k=2）。
                                        


                                    
                                    

                                        
                                            有效镍Ni（HCl）
                                                3.0
                                                0.4
                                                质量分数(mg/kg)
                                               
                                                （HCl）为稀盐酸浸提，不确定度为能扩展不确定度（k=2）。
                                        


                                    
                                    

                                        
                                            有效铬Cr（HCl）
                                                （0.4）
                                               
                                                质量分数(mg/kg)
                                               
                                                （）为参考值，（HCl）为稀盐酸浸提，不确定度为能扩展不确定度（k=2）。
                                        


                                    
                                    

                                        
                                            有效钴Co（HCl）
                                                1.8
                                                0.3
                                                质量分数(mg/kg)
                                               
                                                （HCl）为稀盐酸浸提，不确定度为能扩展不确定度（k=2）。
                                        


                                    
                                    

                                        
                                            有效硒Se（HCl）
                                                （0.006）
                                               
                                                质量分数(mg/kg)
                                               
                                                （）为参考值，（HCl）为稀盐酸浸提，不确定度为能扩展不确定度（k=2）。
                                        


                                    
                                    

                                        
                                            有效砷As（HCl）
                                                (0.32)
                                               
                                                质量分数(mg/kg)
                                               
                                                （）为参考值，（HCl）为稀盐酸浸提，不确定度为能扩展不确定度（k=2）。