摘要
用双通道离子色谱仪同时测定湿沉降中F^(-)、Cl^(-)、NO_(3)^(-)、SO_(4)^(2-)四种阴离子和Na^(+)、NH_(4)^(+)、K^(+)、Mg^(2+)、Ca^(2+)五种阳离子。实验结果表明:四种阴离子和五种阳离子标准曲线相关系数均大于0.999,检出限均低于0.02 mg/L。相对标准偏差不大于5.7%,加标回收率范围在94.0%~104%。利用测得的九种阴、阳离子浓度,结合pH和电导率数值,计算湿沉降阴、阳离子浓度平衡和电导率平衡,均满足《酸沉降监测技术规范》(HJ/T 165-2004)要求。
A dual channel ion chromatograph was used to simultaneously determine four anions of F^(-),Cl^(-),NO_(3)^(-),SO_(4)^(2-),and five cations of Na^(+),NH_(4)^(+),K^(+),Mg^(2+),Ca^(2+)in wet deposition.The experimental results show that the correlation coefficients of the standard curves of four anions and five cations are greater than 0.999,and the detection limits are lower than 0.02 mg/L.The relative standard deviation is no more than 5.7%,and the recovery rate ranges from 94.0%to 104%.Using the measured nine kinds of anion and cation concentrations,combined with pH and conductivity values,the anion and cation concentration balance and conductivity balance of wet sedimentation are calculated,which meet the requirements of technical specification for acid sedimentation monitoring(HJ/T 165-2004).
作者
姜燕
张娅
Jiang Yan;Zhang Ya(Jiangsu Yangzhou Environmental Monitoring Center,Yangzhou 225000,China;School of Environmental Scienceand Engineering,Yangzhou University,Yangzhou 225009,China)
出处
《环境科学与管理》
CAS
2023年第6期121-125,137,共6页
Environmental Science and Management
基金
国家自然科学基金(22172140)。
关键词
双通道离子色谱仪
湿沉降
阴、阳离子浓度平衡
电导率平衡
dual channel ion chromatograph
wet deposition
anion and cation concentration balance
conductivity balance
