PMID- 36878017
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20230321
LR  - 20230321
IS  - 1520-6882 (Electronic)
IS  - 0003-2700 (Linking)
VI  - 95
IP  - 11
DP  - 2023 Mar 21
TI  - Array Point Discharge as Enhanced Tandem Excitation Source for Miniaturized 
      Optical Emission Spectrometer.
PG  - 5151-5158
LID - 10.1021/acs.analchem.3c00306 [doi]
AB  - A new compact tandem excitation source was designed and constructed by using an 
      array point discharge (ArrPD) microplasma for a miniaturized optical emission 
      spectrometer through coupling a hydride generation (HG) unit as a sample 
      introduction device. Three pairs of point discharges were arranged in sequence in 
      a narrow discharge chamber to construct the ArrPD microplasma, for improved 
      excitation capability owing to the serial excitation. Besides, the discharge 
      plasma region was greatly enlarged, therefore, more gaseous analytes could be 
      intercepted to enter into the microplasma for sufficient excitation, for improved 
      excitation efficiency and OES signal. To better understand the effectiveness of 
      the proposed ArrPD source, a new instrument for simultaneous detection of atomic 
      emission and absorption spectral responses was also proposed, designed, and 
      constructed to reveal the excitation and enhancement process in the discharge 
      chamber. Under the optimized conditions, the limits of detection (LODs) of As, 
      Ge, Hg, Pb, Sb, Se, and Sn were 0.7, 0.4, 0.05, 0.7, 0.3, 2, and 0.08 mug L(-1), 
      respectively, and the relative standard deviations (RSDs) were all less than 4%. 
      Compared with a commonly used single point discharge microplasma source, the 
      analytical sensitivities of these seven elements were improved by 3-6-fold. 
      Certified Reference Materials (CRMs) were successfully analyzed with this 
      miniaturized spectrometer, which features low power, compactness, portability, 
      and high detectability, and is thereby a great prospect in the field of elemental 
      analytical chemistry.
FAU - Zhang, Meng
AU  - Zhang M
AD  - Analytical and Testing Center, Sichuan University, Chengdu, Sichuan 610064, 
      China.
FAU - Tang, Qingsong
AU  - Tang Q
AD  - Analytical and Testing Center, Sichuan University, Chengdu, Sichuan 610064, 
      China.
FAU - Li, Peixia
AU  - Li P
AD  - Analytical and Testing Center, Sichuan University, Chengdu, Sichuan 610064, 
      China.
FAU - He, Lin
AU  - He L
AD  - Analytical and Testing Center, Sichuan University, Chengdu, Sichuan 610064, 
      China.
FAU - Hou, Xiandeng
AU  - Hou X
AUID- ORCID: 0000-0003-2488-2063
AD  - Analytical and Testing Center, Sichuan University, Chengdu, Sichuan 610064, 
      China.
AD  - Key Lab of Green Chemistry and Technology of MOE, and College of Chemistry, 
      Sichuan University, Chengdu, Sichuan 610064, China.
FAU - Jiang, Xiaoming
AU  - Jiang X
AD  - Analytical and Testing Center, Sichuan University, Chengdu, Sichuan 610064, 
      China.
LA  - eng
PT  - Journal Article
DEP - 20230306
PL  - United States
TA  - Anal Chem
JT  - Analytical chemistry
JID - 0370536
SB  - IM
EDAT- 2023/03/07 06:00
MHDA- 2023/03/07 06:01
CRDT- 2023/03/06 18:02
PHST- 2023/03/07 06:00 [pubmed]
PHST- 2023/03/07 06:01 [medline]
PHST- 2023/03/06 18:02 [entrez]
AID - 10.1021/acs.analchem.3c00306 [doi]
PST - ppublish
SO  - Anal Chem. 2023 Mar 21;95(11):5151-5158. doi: 10.1021/acs.analchem.3c00306. Epub 
      2023 Mar 6.