Zhang G, Li B, Fan J, Feng S
Department of Chemistry, Henan Normal University, Xinxiang, Henan 453002, People's Republic of China.
Talanta. 1997 Jul;44(7):1141-7. doi: 10.1016/s0039-9140(96)02080-2.
A simple and very sensitive kinetic fluorimetric method is reported for the determination of trace amount of thiocyanate. The proposed method is based on the inhibition effect of thiocyanate on oxidation of rhodamine 6G by potassium bromate in sulfuric acid solution. The detection limit for thiocyanate is 1.63 x 10(-6) mmol/l. The linear range of the determination is 4.82 x 10(-6)-4.13 x 10(-5) mmol/l. This method has been used to determine trace thiocyanate in urine and saliva of smokers and non-smokers. The results obtained are satisfactory.
报道了一种简单且灵敏度很高的动力学荧光法测定痕量硫氰酸盐。该方法基于在硫酸溶液中硫氰酸盐对溴酸钾氧化罗丹明6G的抑制作用。硫氰酸盐的检测限为1.63×10⁻⁶ mmol/L。测定的线性范围为4.82×10⁻⁶ - 4.13×10⁻⁵ mmol/L。该方法已用于测定吸烟者和非吸烟者尿液及唾液中的痕量硫氰酸盐。所得结果令人满意。
