Determination of Selenium in Organic Matrices Using Hydride Generation Atomic Fluorescence Spectrometry Combined with Online Oxygen Combustion
10.19756/j.issn.0253-3820.241280
- VernacularTitle:在线氧燃烧结合氢化物发生原子荧光光谱法用于有机质中硒的测定
- Author:
Yuan-Yuan MA
1
,
2
;
Xiao-Hui HU
;
Yong-Yu DING
;
Xiang-Dong GAO
;
Tai-Cheng DUAN
Author Information
1. 中国科学院长春应用化学研究所,电分析化学国家重点实验室,长春 130022
2. 中国科学技术大学应用化学与工程学院,合肥 230026
- Keywords:
Online sample decomposition;
Hydride generation atomic fluorescence spectrometry;
Selenium;
Oxygen combustion
- From:
Chinese Journal of Analytical Chemistry
2024;52(10):1602-1608
- CountryChina
- Language:Chinese
-
Abstract:
An online sample decomposition and detection method for high-throughput determination of Se content in organic samples was established based on oxygen combustion combined with hydride generation atomic fluorescence spectrometry.The sole product of Se in oxygen combustion,SeO2,was quantitatively captured on the walls of the combustion flask in an open system.It was then eluted online and reacted in situ with 10％(V/V)HC1 carrier solution and 2％(m/V)NaBH4 reductant solution within the combustion flask.After optimization,for a maximum sample processing amount of 0.2 g,the sample analysis throughput was 20 sample/h.The detection limit(LOD,3SD)for Se reached 0.012 mg/kg,and the relative standard deviations for parallel determinations(RSDs,n=6)was 1.7％.The analytical results of certified reference materials,scallop(GBW10024)and chicken(GBW10018),were consistent with the certified values,and the analytical results of real samples were in good agreement with those obtained by traditional wet digestion.
