کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10556855 | 968435 | 2011 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Determination of dimethylsulfide and dimethylselenide in human urine by portable gas chromatography-photoionization detection with headspace sampling
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Determination of dimethylsulfide and dimethylselenide in human urine by portable gas chromatography-photoionization detection with headspace sampling Determination of dimethylsulfide and dimethylselenide in human urine by portable gas chromatography-photoionization detection with headspace sampling](/preview/png/10556855.png)
چکیده انگلیسی
A simple and sensitive method for the determination of dimethylsulfide (DMS) and dimethylselenide (DMSe) employing a gas chromatograph-photoionization detector with headspace sampling (HS-GC-PID) was developed. Parameters affecting the HS-GC-PID sensitivity including matrix effect, heating temperature, extraction time and carrier gas flow-rate were optimized. The matrix effect was required for standard addition calibration method for quantification purposes. The method has been validated when rectilinear relationship was between the concentrations of analytes and peak area in the range of 0.2-50 ng mLâ 1 for DMSe and 0.5-100 ng mLâ 1 for DMS, the correlation coefficients were from 0.995-0.998, and the limits of detection for DMS and DMSe were 25 pg mLâ 1 and 48 pg mLâ 1, respectively. The proposed method was further applied to quantification of DMS and DMSe in urine samples.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Microchemical Journal - Volume 99, Issue 2, November 2011, Pages 352-355
Journal: Microchemical Journal - Volume 99, Issue 2, November 2011, Pages 352-355
نویسندگان
Qingyang Liu, Yanju Liu, Xinxin Wang,