中文摘要：本文构建了一个以基于莱克多巴胺的氨基甲酸酯聚集的功能化金纳米粒子为探针的简单、特异性、灵敏的比色法检测二甲戊灵除草剂残留。基于莱克多巴胺的氨基甲酸酯聚集的功能化金纳米粒子通过与多个受体的相互作用，可有效地聚集二甲戊灵除草剂残留，并表现为由红到蓝的颜色变化。检测结果显示，线状图吸收率为A(650)/A(522)，二甲戊灵除草剂浓度范围为5.0-500 μM，检测限为0.22μM，非常接近欧洲委员会规定的最大残留值。该方法已经成功应用于环境水和食物样本中二甲戊灵除草剂残留检测，且回收率较好。
外文摘要：In this work, a simple, selective and sensitive colorimetric method was developed for the detection of pendimethalin herbicide using ractopamine-dithiocarbamate capped gold nanoparticles (RAC-DTC-Au NPs) as a probe. The pendimethalin was effectively induced the aggregation of RAC-DTC-Au NPs via various interactions (donor-acceptor, pi-pi, van der Waals and hydrogen-bonding), resulting a color change from red to blue. As a result, the linear graph was plotted between the absorption ratio at A(650)/A(522) and the pendimethalin concentration in the range of 5.0-500 mu M. The detection limit was found to be 0.22 mu M, which is very close to the maximum residue limit (MRL) of pendimethalin that was established by European Commission. The proposed method was successfully applied to detect pendimethalin in environmental water and food samples with good recoveries. (C) 2017 Elsevier B.V. All rights reserved.
外文关键词：Pendimethalin, RAC-DTC-Au NPs, Colorimetric sensor, DLS, TEM
作者：Rohit, Jigneshkumar V.; Kailasa, Suresh Kumar
作者单位：SV Natl Inst Technol, Dept Appl Chem, Surat 395007, India.
期刊名称：SENSORS AND ACTUATORS B-CHEMICAL
期刊影响因子：4.758
出版年份：2017
出版刊次：6
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