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imidacloprid
相关语句
  吡虫啉
    Determination of Imidacloprid in Wheat Flour by High Performance Liquid Chromatography
    高效液相色谱法测定小麦粉中吡虫啉的残留量
短句来源
    Determination of Imidacloprid Residues in Tea by HPLC
    茶叶中吡虫啉残留量的HPLC测定方法
短句来源
    A liquid chromatography-mass spectrometry/mass spectrometry(LC-MS/MS) method was developed for the determination of imidacloprid in vegetable and tea samples.
    介绍了利用液相色谱-串联质谱(LC-MS/MS)快速、准确地测定蔬菜、茶叶产品中吡虫啉残留量的方法。
短句来源
    Determination of imidacloprid residuals in corn with HPLC and SPE cleanup method
    固相萃取净化高效液相色谱法测定玉米中吡虫啉
短句来源
    Determination of Imidacloprid Residues in Vegetable and Tea Samples Using Liquid Chromatography Mass Spectrometry/Mass Spectrometry
    液相色谱-串联质谱检测蔬菜和茶叶中吡虫啉的残留量
短句来源
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  相似匹配句对
    Determination of Imidacloprid Residues in Tea by HPLC
    茶叶中吡虫啉残留量的HPLC测定方法
短句来源
    Determination of Imidacloprid Residues in Exported Vegetable by HPLC
    吡虫啉在蔬菜中残留量高效液相色谱测定方法
短句来源
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  imidacloprid
Determination of the Insecticide Imidacloprid in Potato (Solanum tuberosum L.) and Onion (Allium cepa) by High-Performance Liqui
      
A high-performance liquid chromatography (HPLC) method has been proposed for the determination of imidacloprid residues in fortified potato (Solanum tuberosum L.) and onion (Allium cepa) and in treated potato and onion samples.
      
Sample preparation consisted of dichloromethane extraction of imidacloprid from the plant material, followed by purification of the obtained onion extract on an LC-Florisil disposable cartridge.
      
The HPLC-diode-array-detection (DAD) method has been developed on reversed phase for separation of imidacloprid with isocratic elution with a mixture of 0.01 M phosphate buffer (pH 3.15) and acetonitrile (75 : 25, v/v).
      
Spectral data obtained with DAD allow the identification of imidacloprid residue.
      
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A method for the determination of imidacloprid residue in tea was established by HPLC with UV detector.The tea sample is extracted by methyl alcohol, reextracted by dichloromethane, cleaned up by Florisil column, elutedby Petroleum ether-ethyl acetate, The proposed method is precise and selective with recovery of more than 86.7% andlimit of determination of 0.03mg/kg.

建立了用高效液相色谱法测定茶叶中吡虫啉农药残留量的方法,试样用甲醇提取,二氯甲烷萃取,氟罗里硅土柱净化,外标法定量,方法准确、精密度好,测定限为0.03mg/kg。

A method for the determination of imidacloprid residue in exported vegetables was established by HPLC. The vegetable samples is extracted by acid acetonitrile, cleaned up through a C18 solid-phase extraction column with ethyl acetate, and reversed-phase high performance liquid chromatography with a UV detector. The detection wavelength was 270 nm. The detectable limit of concentration was 0.05 mg/kg. The average spiked recoveries at levels of 0.1 to 0.5 mg/kg were found to be in the range of 86.67% to...

A method for the determination of imidacloprid residue in exported vegetables was established by HPLC. The vegetable samples is extracted by acid acetonitrile, cleaned up through a C18 solid-phase extraction column with ethyl acetate, and reversed-phase high performance liquid chromatography with a UV detector. The detection wavelength was 270 nm. The detectable limit of concentration was 0.05 mg/kg. The average spiked recoveries at levels of 0.1 to 0.5 mg/kg were found to be in the range of 86.67% to 100.33% with the relative standard deviations of variation of 3.19% to 9.95%.

建立了用高效液相色谱法测定出口蔬菜中吡虫啉农药残留量的方法。试样用酸性乙腈提取,C18柱净化,乙酸乙酯洗脱,反相高效液相色谱-紫外检测器测定,检测波长为270nm。方法的最低检测限为0.05mg/kg,0.1~0.5mg/kg水平添加回收率的范围是86.67%~100.33%,相对标准偏差为3.19%~9.95%。

A combination method of SPE and HPLC were used to determine imidacloprid residuals in corn. Imidacloprid was extracted with acetonitrile from the sample and the extraction was further purified with fresh activated Florisil. Acetone was used as eluent. Eluent was concentrated with nitrogen and diluted to volume and filtrated. The chromatographic conditions were: Agilent XDB-C18(250mm×4.6mm) column at 40℃, MeOH/ CH3CN/H2O(10∶10∶80) as mobile phase, UV detector at 270nm. Detection limit of the method...

A combination method of SPE and HPLC were used to determine imidacloprid residuals in corn. Imidacloprid was extracted with acetonitrile from the sample and the extraction was further purified with fresh activated Florisil. Acetone was used as eluent. Eluent was concentrated with nitrogen and diluted to volume and filtrated. The chromatographic conditions were: Agilent XDB-C18(250mm×4.6mm) column at 40℃, MeOH/ CH3CN/H2O(10∶10∶80) as mobile phase, UV detector at 270nm. Detection limit of the method was 0.2μg/mL, linear range and linearly dependent coefficient were 0.2~5μg/mL and 0.9993 respectively, average recovery is 84.2%. The result showed that this method is easy to operate, with greatly shortened analytical time, greatly enhanced accuracy, and obviously improved separation results.

研究采用固相萃取-高效液相色谱法测定玉米中吡虫啉的残留。样品中吡虫啉经乙腈提取,采用刚活化后弗罗里硅土对其进一步净化提纯,洗脱液为丙酮;将洗脱液用氮吹浓缩、定容、过滤后,供液相色谱测定;采用安捷伦XDB-C18(250mm×4.6mm)色谱柱,柱温40℃,甲醇-乙腈-水(10∶10∶80)为流动相,检测波长270nm;该方法的检测限为0.2μg/mL,线性范围0.2~5μg/mL,线性相关系数为0.9993,回收率达84.2%。结果表明,该分析方法不仅操作简便,分析周期短,而且方法准确度高,色谱分离效果好。

 
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