Department of Bioengineering, Faculty of Engineering and Architecture, Konya Food and Agriculture University, 42080, Konya, Turkey; Research and Development Center for Diagnostic Kits (KIT-ARGEM), Konya Food and Agriculture University, 42080, Konya, Turkey.
Anal Chim Acta. 2021 Jun 29;1166:338597. doi: 10.1016/j.aca.2021.338597. Epub 2021 May 2.
The concentration of nitrite (NO) ions above allowable limits in water resources and food stuffs is considered hazardous and has been proven to be of great threat to the environment and public health. In this work, an acenaphtho [1,2-d] imidazole derivative (1) as a ratiometric colorimetric probe is developed. UV-Vis experiments demonstrate that the probe 1 shows excellent selectivity toward NO in the presence of other potential interfering species, a rapid response (20 s) and a low detection limit (100 nM) by a distinct visual color change with a bathochromic shift of 120 nm from colorless to intense yellow. Besides, this probe is further used for the quantification of nitrite ions in environmental water resources such as tap water, underground water, and surface water samples. The high recoveries (96-99% with relative standard deviations (RSD) of <2.0%) make the probe 1 a promising candidate for practical applications in daily life in the detection of nitrite ions.
水中和食物中亚硝酸盐（NO）离子的浓度超过允许范围被认为是有害的，并且已经被证明对环境和公众健康构成了极大的威胁。在这项工作中，开发了一种吖萘并[1,2-d]咪唑衍生物（1）作为比率比色探针。紫外-可见实验表明，探针 1 在存在其他潜在干扰物质的情况下对 NO 具有优异的选择性，通过从无色到强烈黄色的 120nm 红移的明显可见颜色变化，具有快速响应（20s）和低检测限（100nM）。此外，该探针还进一步用于环境水资源（如自来水、地下水和地表水样本）中亚硝酸盐离子的定量检测。高回收率（96-99%，相对标准偏差（RSD）小于 2.0%）使得探针 1 成为日常生活中检测亚硝酸盐离子的有前途的候选者。
