کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7643501 | 1494884 | 2013 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The application of gas chromatography-time-of-flight mass spectrometry to the analysis of monomethyl mercury at sub-picogram levels
ترجمه فارسی عنوان
استفاده از طیف سنجی جرم کروماتوگرافی گاز-زمان پرواز به تجزیه و تحلیل جیوه مونومیتل در سطوح زیر پیکوگام
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
چکیده انگلیسی
The analysis of sub-picogram-range methyl mercury generally requires complicated hyphenated instrumentation combining chromatographic systems for the separation and identification of organic Hg components (by GC-MS or LC-MS) and inorganic mass spectrometric techniques for their quantification. To eliminate the complexities and possible biases associated with such complicated hyphenated systems, it is highly desirable to develop a simplified but reliable single-stage instrumental method for the analysis of methyl mercury in environmental samples. To this end, this paper presents an analytical technique based on thermal desorption (TD) - GC - time of flight (TOF) mass spectrometry (MS) for the quantitative analysis of mono-methyl mercury (MMHg) prepared in a liquid phase standard. This optimized system was calibrated using standards in the range of 18Â pg to 45Â ng and yielded a coefficient of correlation of R2Â =Â 0.9996. This GC-TOF-MS system allowed very low detection limits for MMHg (MDLÂ =Â 1.86Â pg and LODÂ =Â 0.031Â pg) with good reproducibility (RSEÂ =Â 1.82%). The potential applicability of the GC-TOF-MS system is highlighted for the trace-level analysis of sub-pg-range of methyl mercury.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Microchemical Journal - Volume 110, September 2013, Pages 107-112
Journal: Microchemical Journal - Volume 110, September 2013, Pages 107-112
نویسندگان
Yong-Hyun Kim, Ki-Hyun Kim, Hye-On Yoon, Richard J.C. Brown,