化学发光法测定土壤中有效铜

Chemiluminescence to Determine the Effective Copper in the Soil

用Zn-EDTA为掩蔽剂与稳定剂条件下，以鲁米诺-氰化钾体系化学发光测定土壤中有效铜，有稳定性好、选择性高的特点，试验确定了最佳稳定条件．铜的检出限为1×10^-11g／mL，方法的线性范围为5×10^-10～5×10^-7g／mL，变异系数最大为4．4％．

Under the condition of Zn-EDTA as the inhibitor and stabilizer, using the luminal--potassium cyanide system chemiluminescence, the effective copper in the soil is determined. The proposed method has good stability and high selective characteristic. The copper picks out limits is 1 ×10^-11 g/mL, the method linear scope is 5 ×10^-10-5×10^-7 g/mL, the coefficient of variation is 4.4% mostly.