Trace boron in water and plant samples was preconcentrated by a novel headspace liquid phase micro-sublimation method, followed by determination by inductively coupled plasma optical emission spectroscopy.
Sodium hydroxide solution was used as the absorption solvent during the preconcentration step. The type and volume of absorption solvent, absorption time and temperature, and pH of the absorption solution and sample solution were optimized for the extraction. The linear range was from 0.1 to 80 μg/mL, with a relative standard deviation of 7.4%. The limit of detection based on a signal-to-noise ratio of three was 0.008 μg/mL. Under the optimized conditions, real water samples and plant samples were analyzed.
The results showed this method can be applied for the determination of boron in environmental samples.
Additional Information:
1 Author Information: Aide Sun , Qingcai Xu, Shujian Xu , Xuehui Shangguan ,Hongyuan Shen , Jing Sun.
Correspondence: sunj@nwipb.cas.cn.
2 Published: Analytical Letters, 2013,46: 2610–2619