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首页> 美国卫生研究院文献>International Journal of Environmental Research and Public Health >Quantitative Detection of Trace Malachite Green in Aquiculture Water Samples by Extractive Electrospray Ionization Mass Spectrometry
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Quantitative Detection of Trace Malachite Green in Aquiculture Water Samples by Extractive Electrospray Ionization Mass Spectrometry

机译：萃取电喷雾电离质谱法定量检测水产养殖水中的孔雀石绿

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摘要

Exposure to malachite green (MG) may pose great health risks to humans; thus, it is of prime importance to develop fast and robust methods to quantitatively screen the presence of malachite green in water. Herein the application of extractive electrospray ionization mass spectrometry (EESI-MS) has been extended to the trace detection of MG within lake water and aquiculture water, due to the intensive use of MG as a biocide in fisheries. This method has the advantage of obviating offline liquid-liquid extraction or tedious matrix separation prior to the measurement of malachite green in native aqueous medium. The experimental results indicate that the extrapolated detection limit for MG was ~3.8 μg·L−1 (S/N = 3) in lake water samples and ~0.5 μg·L−1 in ultrapure water under optimized experimental conditions. The signal intensity of MG showed good linearity over the concentration range of 10–1000 μg·L−1. Measurement of practical water samples fortified with MG at 0.01, 0.1 and 1.0 mg·L−1 gave a good validation of the established calibration curve. The average recoveries and relative standard deviation (RSD) of malachite green in lake water and Carassius carassius fish farm effluent water were 115% (6.64% RSD), 85.4% (9.17% RSD) and 96.0% (7.44% RSD), respectively. Overall, the established EESI-MS/MS method has been demonstrated suitable for sensitive and rapid (<2 min per sample) quantitative detection of malachite green in various aqueous media, indicating its potential for online real-time monitoring of real life samples.
机译：暴露于孔雀石绿（MG）可能对人类构成极大的健康风险；因此，开发快速，可靠的方法来定量筛选水中孔雀石绿的存在至关重要。在此，由于在渔业中大量使用MG作为杀生物剂，萃取电喷雾电离质谱（EESI-MS）的应用已扩展到湖水和水产养殖水中的MG的痕量检测。该方法的优点是避免了在天然水性介质中测量孔雀石绿之前的离线液-液萃取或繁琐的基质分离。实验结果表明，湖水中MG的外推检出限为〜3.8μg·L -1 （S / N = 3），而推算出的检出限为〜0.5μg·L -1在优化的实验条件下在超纯水中使用。 MG的信号强度在10–1000μg·L -1 的浓度范围内表现出良好的线性。分别以0.01、0.1和1.0 mg·L −1 的浓度对MG强化的实际水样进行测量，可以很好地验证所建立的校准曲线。湖泊水和Car鱼养殖场废水中孔雀石绿的平均回收率和相对标准偏差（RSD）分别为115％（6.64％RSD），85.4％（9.17％RSD）和96.0％（7.44％RSD）。总体而言，已证明已建立的EESI-MS / MS方法适用于灵敏，快速（每个样品<2分钟）的定量检测各种水性介质中的孔雀石绿，表明它具有在线实时监测实际生活中样品的潜力。

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