PMID- 34706540
OWN - NLM
STAT- MEDLINE
DCOM- 20211122
LR  - 20211122
IS  - 1520-6882 (Electronic)
IS  - 0003-2700 (Linking)
VI  - 93
IP  - 45
DP  - 2021 Nov 16
TI  - Novel Dielectric Barrier Discharge Trap for Arsenic Introduced by Electrothermal 
      Vaporization: Possible Mechanism and Its Application.
PG  - 15063-15071
LID - 10.1021/acs.analchem.1c03079 [doi]
AB  - In this work, a novel integrated dielectric barrier discharge (IDBD) reactor 
      coupled to an electrothermal vaporizer (ETV) was established for arsenic 
      determination. It is for the first time gas-phase enrichment (GPE) was fulfilled 
      based on the hyphenation of ETV and DBD. The mechanisms of evolution of arsenic 
      atomic and molecular species during vaporization, transportation, trapping, and 
      release processes were investigated via X-ray photoelectron spectroscopy (XPS) 
      and other approaches. Tentative mechanisms were deduced as follows: the newly 
      designed DBD atomizer (DBDA) tube upstream to the air inlet fulfills the 
      atomization of arsenic nanoparticles in vaporized aerosol, leading to free 
      arsenic atoms that are indispensable for forming arsenic oxides; the DBD trap 
      (DBDT) tube traps arsenic oxides under an O(2)-domininating atmosphere and then 
      releases arsenic atoms under H(2)-dominating atmospheres. In essence, this 
      process is a physical-chemical process rather than an electrostatic particle 
      deposition. Such a trap and release sequence separates matrix interference and 
      enhances analytical sensitivity. Under the optimized conditions, the method 
      detection limit (LOD) was 0.04 mg/kg and the relative standard deviations (RSDs) 
      were within 6% for As standard solution and real seafood samples, indicating 
      adequate analytical sensitivity and precision. The mean spiked recoveries for 
      laver, kelp, and Undaria pinnatifida samples were 95-110%, and the results of the 
      certified reference materials (CRMs) were consistent with certified values. This 
      ETV-DBD preconcentration scheme is easy and green and has low cost for As 
      analysis in seafood samples. DBD was proved a novel ETV transportation 
      enhancement and preconcentration technique for arsenic, revealing its potential 
      in rapid arsenic analysis based on direct solid sampling ETV instrumentation.
FAU - Gu, Siyu
AU  - Gu S
AD  - Institute of Quality Standard and Testing Technology for Agro-products, Chinese 
      Academy of Agricultural Sciences, and Key Laboratory of Agro-food Safety and 
      Quality, Ministry of Agriculture and Rural Affairs, Beijing 100081, China.
AD  - Research Center for Analytical Sciences, College of Sciences, Northeastern 
      University, Shenyang 110819, China.
FAU - Huang, Xudong
AU  - Huang X
AD  - Beijing Ability Technology Company, Limited, Beijing 100081, China.
FAU - Chen, Mingli
AU  - Chen M
AUID- ORCID: 0000-0001-8536-8864
AD  - Research Center for Analytical Sciences, College of Sciences, Northeastern 
      University, Shenyang 110819, China.
FAU - Liu, Jixin
AU  - Liu J
AD  - Institute of Quality Standard and Testing Technology for Agro-products, Chinese 
      Academy of Agricultural Sciences, and 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, and 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 - Chen, Guoying
AU  - Chen G
AD  - Agricultural Research Service, Eastern Regional Research Center, U.S. Department 
      of Agriculture, 600 E. Mermaid Lane, Wyndmoor, Pennsylvania 19038, United States.
FAU - Shao, Yunbin
AU  - Shao Y
AD  - Beijing Ability Technology Company, Limited, Beijing 100081, China.
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20211028
PL  - United States
TA  - Anal Chem
JT  - Analytical chemistry
JID - 0370536
RN  - N712M78A8G (Arsenic)
SB  - IM
MH  - *Arsenic
MH  - Spectrophotometry, Atomic
MH  - Volatilization
EDAT- 2021/10/29 06:00
MHDA- 2021/11/23 06:00
CRDT- 2021/10/28 05:24
PHST- 2021/10/29 06:00 [pubmed]
PHST- 2021/11/23 06:00 [medline]
PHST- 2021/10/28 05:24 [entrez]
AID - 10.1021/acs.analchem.1c03079 [doi]
PST - ppublish
SO  - Anal Chem. 2021 Nov 16;93(45):15063-15071. doi: 10.1021/acs.analchem.1c03079. 
      Epub 2021 Oct 28.