摘要
目的:建立氢化物发生-电感耦合等离子体发射光谱(HG-ICP-OES)检测人尿砷含量的方法,为地方性砷中毒患者尿样中痕量砷的测定提供一条更便捷、灵敏的途径。方法:采用正交试验选择仪器最佳工作参数;探讨氢化物发生条件的影响因素;对该方法进行相关分析效能评价,并与二乙氨基二硫代甲酸银(DDC-Ag)法进行比对。结果:该方法检出限为0.21～0.53g/L,定量限2.1～5.3g/L;在10～500g/L范围内,砷浓度与等离子体发射光谱强度线性关系良好(R>0.9995),灵敏度(标准曲线斜率)为8.90±0.78;相对标准差在0.42%～1.73%之间,加标回收率95.67%～105.77%,检测结果与DDC-Ag法比较无统计学差异,且检出限更低,灵敏度更高,线性关系更好,精密度区间更窄,回收率范围更可靠。结论:该方法灵敏度高、准确性好,可用于地方性砷中毒患者尿中总砷含量测定。
Objective:To found a method of Hydride Generation-Inductively Coupled Plasma-Optical Emission Spectrometry(HG-ICP-OES)which could detect the total arsenic content in urine samples of arsenism accurately and sensitively.Method:Selecting the best performance parameters of the instrument by using orthogonal design,investigating the influential factor of hydride generation,examining the limit of detection and quantitation,linearity and range,sensitivity,accuracy and precision,and comparing to the diethylamino d...
出处
《黔南民族医专学报》
2009年第1期9-13,共5页
Journal of Qiannan Medical College for Nationalities
