摘要
用纳米银修饰玻碳电极并检测了痕量硫氰根。在pH6.0的磷酸盐缓冲溶液中,运用示差脉冲伏安法,氧化峰电流值和硫氰根的浓度在5.0×10-7～4.0×10-4mol·L-1范围内呈良好的线性关系;检出限为4.137×10-8mol·L-1;应用于吸烟人和非吸烟人的唾液中痕量硫氰根的测定,结果满意。
A new method for the determination of thiocyanate with glassy graphite electrode modified with nano-size silver was established. In a medium of pH 6.0 phosphate buffer, using the differential pulse voltammetry, the oxidation peak current is proportional to the thiocyanate concentration in the range of 5.0×10^(-7)~4.0×10^(-4)mol·L^(-1), with a detection limit of 4.137×10^(-8)mol·L^(-1). The method has been applied to the determination of thiocyanate in saliva of smokers and non-smokers with satisfactery results.
出处
《理化检验（化学分册）》
CAS
CSCD
北大核心
2005年第5期305-307,310,共4页
Physical Testing and Chemical Analysis(Part B:Chemical Analysis)
基金
国家教育部重点科技基金(批准号:00117)资助
关键词
纳米银
修饰电极
硫氰根
测定
Nano-size silver
Modified electrode
Thiocyanate
Determination
