三维荧光结合化学多维校正快速灵敏测定环境水样中的噻菌灵和双酚A

随着经济的高速发展,环境问题正在日益引起人们的广泛关注.在实际生产中,农药和塑化剂长期存在滥用的问题,使其成为最为广泛的环境污染源并对生态环境、食品、人畜等造成严重的危害.针对环境中农药和塑化剂的残留问题,开发一种灵敏、快速的高效检测分析方法,采用三维荧光结合化学计量学方法用于环境水样中噻菌灵(TBZ)与双酚A(BPA...

Determination of Thiabendazole and Bisphenol A in Environmental Water Samples Using Excitation-Emission Matrix Fluorescence Coupled With Chemical Multi-Way Calibration Method

As the economy is making high-speed progress, and environmental issues have raised people’s attention. Long-term abuse of pesticides and plasticizers in the actual production makes them the most pervasive environmental pollution source. Moreover, this issue does severe harm to ecotope, food stuff and human and animal, etc. In this paper, to solve the residual pesticides and plasticizers issue, a fast, sensitive and effective analysis strategy that the three-dimensional fluorescence spectroscopy coupled with the chemometrics-based method was developed for simultaneous determination of thiabendazole (TBZ) and bisphenol A (BPA) in environmental water samples. This analysis strategy gives consider both high sensitivity and abundant information of three-dimensional fluorescence spectroscopy and the significant advantage of “mathematical separation” of the chemical multi-way calibration method. It can achieve the trace analysis for TBZ and BPA only need simple pretreatment. Although the fluorescence spectra of TBZ and BPA overlapped each other and unknown interferences coexisted in the matrices, reliable qualitative and quantitative results were obtained by the proposed method with the help of a significant “second-order advantage”.TBZ had a good linear relationship (r=0.999 9) in range of 20~200 ng·mL-1, while BPA had good linear relationship (r=0.999 1) in 40~280 ng·mL-1. In two kinds of environmental water samples, the obtained average recoveries of TBA and BPA were 96.3%～99.1% and 90.0%～90.8%, respectively. Meanwhile, the standard deviations were less than 7.2%. In order to evaluate the performances of the proposed method, the figures of merit such as sensitivity (SEN), selectivity (SEL), the limit of detection (LOD) and limit of quantification (LOQ) were investigated. The satisfactory results indicated that it might be promising as an effective strategy for rapidly and accurately quantifying TBZ and BPA in complex environmental water samples. So this work provides an effective and scientific monitoring tool for pesticides and plasticizers residues.