کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1227654 | 1494871 | 2015 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Integration of hydride generation and photochemical vapor generation for multi-element analysis of traditional Chinese medicine by ICP-OES
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Integration of hydride generation and photochemical vapor generation for multi-element analysis of traditional Chinese medicine by ICP-OES Integration of hydride generation and photochemical vapor generation for multi-element analysis of traditional Chinese medicine by ICP-OES](/preview/png/1227654.png)
چکیده انگلیسی
A dual-mode chemical vapor generation (DM-CVG) sample introduction system that integrates hydride generation (HG) and photochemical vapor generation (PVG) was coupled to a commercial inductively coupled plasma optical emission spectrometer (ICP-OES) for simultaneous multi-element analysis of traditional Chinese medicine samples for trace hydride-forming elements and non-hydride-forming elements. Three hydride-forming elements (Cd, As, and Ge) and two non-hydride-forming but photochemical vapor-generating elements (Co and Ni) were selected as target elements to validate the proposed method. Optimum experimental conditions for DM-CVG-ICP-OES were carefully investigated, and satisfactory limits of detection (LODs), 0.2-1.4 μg Lâ 1, and relative standard deviations (RSDs), 1.3%-4.6%, were obtained for these target elements. A certified reference celery sample (GBW10048) was used to investigate the feasibility of the proposed method for real analysis. Strong suppression on the PVG efficiency occurred either when little nitric acid residue or some unknown coexisting materials remained in the sample solutions. Complete acid-evaporation/catching and moderate dilution of the digests could effectively alleviate this negative effect. Four different acid-evaporation/catching methods were performed and compared. Catching acid by adding an appropriate volume of formic acid gave the best signal response and the results agreed well with the certified values. Satisfactory analytical results were also obtained in real sample analysis of TCM Curcuma wenyujin Y.H. Chen et C. Ling.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Microchemical Journal - Volume 123, November 2015, Pages 164-169
Journal: Microchemical Journal - Volume 123, November 2015, Pages 164-169
نویسندگان
Yan Shen, Chengbin Zheng, Xiaoming Jiang, Xi Wu, Xiandeng Hou,