PMID- 32237707
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20200818
LR  - 20200818
IS  - 1520-6882 (Electronic)
IS  - 0003-2700 (Linking)
VI  - 92
IP  - 10
DP  - 2020 May 19
TI  - High Sensitivity Analysis of Selenium by Ultraviolet Vapor Generation Combined 
      with Microplasma Gas Phase Enrichment and the Mechanism Study.
PG  - 7257-7264
LID - 10.1021/acs.analchem.0c00878 [doi]
AB  - Ultraviolet vapor generation (UVG), as an environmental/user-friendly and 
      efficient sampling approach, was first combined with the gas phase enrichment of 
      Se by dielectric barrier discharge (DBD) microplasma. Volatile Se species from 
      UVG, being much more complicated than conventional hydrides, can be trapped 
      quantitatively ( approximately 100%) on the quartz surface of DBD tube under O(2)-containing 
      atmosphere and released ( approximately 100%) under H(2)-containing atmosphere. The absolute 
      detection limit (LOD) for Se was 4 pg (injection volume = 1.2 mL), and the linear 
      (R(2) > 0.995) range was 0.05-50 mug/L. The results were in good agreement with 
      those of certified reference materials (CRMs) of water and soil samples, and 
      spiked recoveries for real samples were 90-102% with 1-10% relative standard 
      deviations (RSDs). By gas phase analyte enrichment, the proposed method improved 
      analytical sensitivity (peak height) by 16 times. The mechanism was deduced that 
      dominating SeCO species besides H(2)Se generating from UVG were all trapped on 
      the DBD quartz tube surface as SeO(2) or selenite and then released/transported 
      as atoms to the detection zone. The combination of UVG and DBD can facilitate the 
      green uses, miniaturization, and portability revealing its promising potential in 
      field elemental analysis.
FAU - Liu, Meitong
AU  - Liu M
AD  - Institute of Quality Standard and Testing Technology for Agro-products, Chinese 
      Academy of Agricultural Sciences, Beijing 100081, China.
AD  - Key Laboratory of Agro-food Safety and Quality, Ministry of Agriculture and Rural 
      Affairs, Beijing 100081, China.
AD  - College of Chemistry, Jilin University, Changchun 130012, China.
FAU - Liu, Jixin
AU  - Liu J
AD  - Institute of Quality Standard and Testing Technology for Agro-products, Chinese 
      Academy of Agricultural Sciences, Beijing 100081, China.
AD  - Key Laboratory of Agro-food Safety and Quality, Ministry of Agriculture and Rural 
      Affairs, Beijing 100081, China.
AD  - Beijing Ability Technology Company, Limited, Beijing 100081, China.
FAU - Mao, Xuefei
AU  - Mao X
AUID- ORCID: 0000-0002-0415-6657
AD  - Institute of Quality Standard and Testing Technology for Agro-products, Chinese 
      Academy of Agricultural Sciences, Beijing 100081, China.
AD  - Key Laboratory of Agro-food Safety and Quality, Ministry of Agriculture and Rural 
      Affairs, Beijing 100081, China.
FAU - Na, Xing
AU  - Na X
AD  - Beijing Ability Technology Company, Limited, Beijing 100081, China.
FAU - Ding, Lan
AU  - Ding L
AUID- ORCID: 0000-0003-2657-323X
AD  - College of Chemistry, Jilin University, Changchun 130012, China.
FAU - Qian, Yongzhong
AU  - Qian Y
AD  - Institute of Quality Standard and Testing Technology for Agro-products, Chinese 
      Academy of Agricultural Sciences, Beijing 100081, China.
AD  - Key Laboratory of Agro-food Safety and Quality, Ministry of Agriculture and Rural 
      Affairs, Beijing 100081, China.
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20200413
PL  - United States
TA  - Anal Chem
JT  - Analytical chemistry
JID - 0370536
SB  - IM
EDAT- 2020/04/03 06:00
MHDA- 2020/04/03 06:01
CRDT- 2020/04/03 06:00
PHST- 2020/04/03 06:00 [pubmed]
PHST- 2020/04/03 06:01 [medline]
PHST- 2020/04/03 06:00 [entrez]
AID - 10.1021/acs.analchem.0c00878 [doi]
PST - ppublish
SO  - Anal Chem. 2020 May 19;92(10):7257-7264. doi: 10.1021/acs.analchem.0c00878. Epub 
      2020 Apr 13.