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首页> 外文会议>UKM FST Postgraduate Colloquium >Development of Extraction Procedure for Determination of Mercury Species using SPME-assisted Dispersive Derivative Agent
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Development of Extraction Procedure for Determination of Mercury Species using SPME-assisted Dispersive Derivative Agent

机译：使用SPME辅助分散衍生物测定汞种的提取方法的开发

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The extraction procedure for determination of low level mercury using solid phase microextraction was successfully carried out. Design of experimental works using factorial design and central composite design were applied to screen and predict the optimum condition for extraction step. In this study, variables namely concentration level (5 % m/v) and volume of derivatization solution (150 μL) has depicted as main effect for controlling the suitability of derivative reagent condition. Maximum of signal response (account as total peak areas for mercury species) was obtained when extraction procedure was set up at pH of water sample (5.8), extraction time (14 min), extraction temperature (43 °C) and stirring rate (450 rpm). Reducing time required to reach equilibrium is new improvement achieved in this study. Detection limit for each species (MeHg 26.17 ngL~(-1); EtHg 48.84 ngL~(-1) and IHg 14.11 ngL~(-1)) was calculated lower than our previous work. Recovery, repeatability and reproducibility trial were recorded varied at acceptable range and relative standard deviation was calculated below than 10 %.
机译：使用固相微萃取测定低水平汞的萃取方法进行了成功进行。使用因子设计和中央复合设计的实验工程设计对筛网并预测提取步骤的最佳条件。在该研究中，变量即浓度水平（5％m / v）和衍生化溶液（150μl）的体积描绘为控制衍生物试剂条件的适用性的主要效果。当在水样（5.8）的pH下设置提取程序时，获得了最大的信号响应（作为汞种的总峰面积），提取时间（14分钟），提取温度（43°C）和搅拌速率（450 rpm）。减少达到均衡所需的时间是本研究中实现的新改进。每个物种的检测限（Mehg 26.17 ngl〜（-1）; ethg 48.84 ngl〜（-1）和Ihg 14.11 ngl〜（-1））比我们以前的工作低计算。在可接受的范围内记录回收，可重复性和再现性试验，并且计算低于10％的相对标准偏差。

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