Kumar Meher Alok, Labhsetwar Nitin, Bansiwal Amit
Environmental Materials Division, National Environmental Engineering Research Institute, (Council of Scientific and Industrial Research), Nehru Marg, Nagpur 440020, India; Academy of Scientific and Innovative Research (AcSIR), CSIR-National Environmental Engineering Research Institute (CSIR-NEERI), Nagpur 440020, India.
Food Chem. 2018 Feb 1;240:131-138. doi: 10.1016/j.foodchem.2017.07.041. Epub 2017 Jul 12.
In the present work a fast, reliable and safe Ion Exchange Chromatography-Pulsed Amperometry Detection (IC-PAD) method for direct determination of free cyanide in drinking water has been reported. To the best of our knowledge for the first time we are reporting the application of Gold working electrode for detection of free cyanide in a chromatography system. The system shows a wide linear range up to 8000µg/L. The electrode was found to have improved sensitivity and selectivity in the presence of interfering ions. The detection limit of the system was calculated to be 2µg/L. Long term evaluation of the electrode was found to be stable. Reproducible results were obtained from analysis of drinking water samples with recoveries of 98.3-101.2% and Relative Standard Deviations (RSD) of <2%. This study proves the potential application of the newly developed method for the analysis of free cyanide in drinking water.
在本研究中，报道了一种快速、可靠且安全的离子交换色谱-脉冲安培检测法（IC-PAD），用于直接测定饮用水中的游离氰化物。据我们所知，我们首次报道了在色谱系统中使用金工作电极检测游离氰化物。该系统显示出高达8000μg/L的宽线性范围。发现在存在干扰离子的情况下，该电极具有更高的灵敏度和选择性。该系统的检测限经计算为2μg/L。对该电极的长期评估发现其性能稳定。通过对饮用水样品的分析获得了可重现的结果，回收率为98.3-101.2%，相对标准偏差（RSD）<2%。本研究证明了新开发的方法在饮用水中游离氰化物分析方面的潜在应用。
