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首页> 外文期刊>RSC Advances >Determination of six organophosphorus pesticides in water samples by three-dimensional graphene aerogel-based solid-phase extraction combined with gas chromatography/mass spectrometry
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Determination of six organophosphorus pesticides in water samples by three-dimensional graphene aerogel-based solid-phase extraction combined with gas chromatography/mass spectrometry

机译：三维石墨烯气体基固相萃取与气相色谱/质谱法相结合的水样中六种有机磷农药

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In the present study, a three-dimensional graphene aerogel (3D-GA), synthesised by chemical reduction of an aqueous solution of graphene oxides (GOs) with ethylenediaminethermal by a simple water bath method followed by freeze-drying treatment, was used for the solid-phase extraction (SPE) of six organophosphorus pesticides (OPPs) (i.e. trichlorfon, dimethoate, ethoprophos, parathion, fenitrothion and fenthion) from water samples. The target analytes were extracted using packed SPE cartridges and then eluted with tetrahydrofuran. The eluate was collected and dried with high-purity nitrogen gas at room temperature. After redissolving in acetone, the residue was analysed using gas chromatography/mass spectrometry (GC/MS). The proposed method demonstrated a good linearity between 0.5 and 500 g L-1 with the correlation coefficient of 0.9990-0.9998. The limits of detection (LODs) (S/N = 3) and the limits of quantification (LOQs) (S/N = 10) for the six OPPs pesticides were in the range of 0.12-0.58 g L-1 and 0.41-1.96 g L-1, respectively. The accuracy of the present method was evaluated by measuring the recovery of the spiked samples, which ranged from 93.8% to 104.2% with relative standard deviations (RSDs) of 1.1-5.6%. The established method was successfully applied to the determination of the target analytes in environmental water samples including tap water, river water, drinking water and lake water, demonstrating its great potential for the determination of OPPs in water.
机译：在本研究中，通过通过简单的水浴法用乙二胺醚MAL的石墨烯氧化物（GOS）水溶液的化学降低合成的三维石墨烯气体（3D-GA），然后用于冷冻干燥处理，用于六种有机磷农药（IP）的固相萃取（SPE）（即Trichlorfon，二甲酯，乙基普洛克，离散水样品，脱氮和脂肪）。用填充的SPE盒提取靶分析物，然后用四氢呋喃洗脱。收集洗脱液并在室温下用高纯度的氮气干燥。在重新溶解丙酮后，使用气相色谱/质谱法（GC / MS）分析残余物。所提出的方法在0.5至500g L-1之间显示出良好的线性度，相关系数为0.9990-0.9998。六个OPP杀虫剂的检测限（S / N = 3）和定量限制（LOQs）（S / N = 10）的范围为0.12-0.58g L-1和0.41-1.96 G L-1分别。通过测量掺入样品的回收率来评估本方法的准确性，该样品的回收率为93.8％至104.2％，相对标准偏差（RSD）为1.1-5.6％。成熟的方法成功地应用于环境水样中的靶分析物，包括自来水，河水，饮用水和湖水，展示其在水中测定opps的巨大潜力。

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  • 来源
    《RSC Advances》 |2018年第19期|共7页
  • 作者

    Sun P.; Gao Y. L.; Xu C.; Lian Y. F.;

  • 作者单位

    Heilongjiang Univ Sch Chem &

    Mat Sci Key Lab Funct Inorgan Mat Chem Minist Educ Harbin 150080 Heilongjiang Peoples R China;

    Heilongjiang Bayi Agr Univ Analyt Ctr Daqing 163319 Peoples R China;

    Heilongjiang Bayi Agr Univ Analyt Ctr Daqing 163319 Peoples R China;

    Heilongjiang Univ Sch Chem &

    Mat Sci Key Lab Funct Inorgan Mat Chem Minist Educ Harbin 150080 Heilongjiang Peoples R China;

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