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A novel colorimetric probe with positive correlation between toxicity and the reaction for the assessment of chromium ions
Analytical Methods ( IF 2.7 ) Pub Date : 2020-09-24 , DOI: 10.1039/d0ay01291b Jingzhou Hou 1, 2, 3, 4, 5 , Zhengfan Shui 5, 6, 7, 8, 9 , Jiawei Li 5, 6, 7, 8, 9 , Danqun Huo 5, 6, 7, 8, 9 , Xiaohui Tang 1, 2, 3, 4, 5 , Chenhui Yu 1, 2, 3, 4, 5 , Qiang He 1, 2, 3, 4, 5 , Cailin Qiao 5, 6, 7, 8, 9
Analytical Methods ( IF 2.7 ) Pub Date : 2020-09-24 , DOI: 10.1039/d0ay01291b Jingzhou Hou 1, 2, 3, 4, 5 , Zhengfan Shui 5, 6, 7, 8, 9 , Jiawei Li 5, 6, 7, 8, 9 , Danqun Huo 5, 6, 7, 8, 9 , Xiaohui Tang 1, 2, 3, 4, 5 , Chenhui Yu 1, 2, 3, 4, 5 , Qiang He 1, 2, 3, 4, 5 , Cailin Qiao 5, 6, 7, 8, 9
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Different valence states of chromium ions possess huge differences in toxicity. Hence, it is an innovative idea to design a reasonable probe to detect Cr according to the toxicity characteristics of different valence states. We report a novel, rapid, simple and accurate probe for the detection of Cr3+ and Cr6+ ions. As a probe, gold nanoparticles (Au NPs) are successfully modified using tartaric acid (TA) and 2-[4-(2-hydroxyethyl)-1-piperazinyl] ethanesulfonic acid (HEPES) via a two-step modification; the probe shows an increase in the sensitivity towards Cr6+ and decreases towards Cr3+, which is consistent with their toxicity characteristics, benefiting the assessment of total Cr toxicity. The proposed probe achieves considerable two-channel (ultraviolet absorption spectrum and naked eye vision) detection of Cr3+ and Cr6+ providing wide linearity regions and low detection limits. Meanwhile, the results of the interference experiments and analysis of the real samples showed high selectivity and accuracy of the proposed method. With popularization, this method possesses great potential in environmental monitoring and control.
中文翻译：
一种新型的比色探针，在毒性和反应之间呈正相关，用于评估铬离子
铬离子的不同价态在毒性上具有巨大差异。因此，根据不同价态的毒性特征设计合理的探针来检测Cr是一个创新的想法。我们报告了一种新颖，快速，简单且准确的探针，用于检测Cr 3+和Cr 6+离子。作为探针，金酒石纳米颗粒（Au NPs）通过酒石酸（TA）和2- [4-（2-羟乙基）-1-哌嗪基]乙磺酸（HEPES）通过两步修饰成功修饰；探针显示出对Cr 6+的敏感性增加而对Cr 3+的敏感性下降，这与它们的毒性特征相符，有助于评估总Cr毒性。所提出的探针实现了对Cr 3+和Cr 6+的相当大的两通道（紫外线吸收光谱和肉眼视觉）检测，从而提供了宽线性区域和低检测限。同时，干扰实验和对真实样品的分析结果表明，该方法具有较高的选择性和准确性。随着方法的推广，该方法在环境监测和控制中具有很大的潜力。
更新日期：2020-10-06
中文翻译：
一种新型的比色探针，在毒性和反应之间呈正相关，用于评估铬离子
铬离子的不同价态在毒性上具有巨大差异。因此，根据不同价态的毒性特征设计合理的探针来检测Cr是一个创新的想法。我们报告了一种新颖，快速，简单且准确的探针，用于检测Cr 3+和Cr 6+离子。作为探针，金酒石纳米颗粒（Au NPs）通过酒石酸（TA）和2- [4-（2-羟乙基）-1-哌嗪基]乙磺酸（HEPES）通过两步修饰成功修饰；探针显示出对Cr 6+的敏感性增加而对Cr 3+的敏感性下降，这与它们的毒性特征相符，有助于评估总Cr毒性。所提出的探针实现了对Cr 3+和Cr 6+的相当大的两通道（紫外线吸收光谱和肉眼视觉）检测，从而提供了宽线性区域和低检测限。同时，干扰实验和对真实样品的分析结果表明，该方法具有较高的选择性和准确性。随着方法的推广，该方法在环境监测和控制中具有很大的潜力。
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