PMID- 29457890
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20190130
LR  - 20190130
IS  - 1520-6882 (Electronic)
IS  - 0003-2700 (Linking)
VI  - 90
IP  - 6
DP  - 2018 Mar 20
TI  - Headspace Solid-Phase Microextraction Coupled to Miniaturized Microplasma Optical 
      Emission Spectrometry for Detection of Mercury and Lead.
PG  - 3683-3691
LID - 10.1021/acs.analchem.7b04759 [doi]
AB  - Despite increased interest in microplasma atomic spectrometry over the past 
      several years, its applications to field analysis of real samples still remain 
      limited due to its low sensitivity. In this work, headspace solid-phase 
      microextraction (HS-SPME) using PDMS/DVB fiber was used as a sample introduction 
      method to improve the sensitivity of a miniature (6.0 cm length x 5.0 cm width x 
      2.8 cm height) low power (<10 W) microplasma point discharge optical emission 
      spectrometer (PD-OES) for the determination of Hg and Pb after their 
      derivatization with sodium tetraethylborate (NaBEt(4)). Owing to its advantages 
      of combining sampling, separation, and preconcentration of analytes from sample 
      matrices into a single step, HS-SPME not only simplifies sample pretreatment and 
      the experimental setup but also eliminates interferences from matrices and water 
      vapor while significantly improving analytical performance. In comparison to 
      photochemical vapor generation PD-OES, limits of detection for Hg and Pb were 
      enhanced by at least 100-fold, providing great potential for field analysis of 
      these and other trace elements in real samples. Under optimal conditions, the 
      limits of detection for Hg and Pb were 0.001 and 0.003 mug L(-1), respectively, 
      with relative standard deviations (RSDs) better than 2.1% and 4.5% at a 
      concentration of 1 mug L(-1). The accuracy of the HS-SPME-PD-OES system was 
      validated by analysis of three Certified Reference Materials, including DORM-4 
      (Hg, 412 +/- 36 mug kg(-1); Pb, 404 +/- 62 mug kg(-1)), TORT-3 (Hg, 292 +/- 22 mug kg(-1); 
      Pb, 225 +/- 18 mug kg(-1)) and SRM1568b (Hg, 5.53 +/- 0.58 mug kg(-1)), providing 
      analytical results in excellent agreement with certified values at the 95% 
      confidence level. This method was also successfully used for the analysis of 
      several real rice and water samples with satisfactory results (90-130% recoveries 
      of added spikes).
FAU - Zheng, Chengbin
AU  - Zheng C
AUID- ORCID: 0000-0002-7496-8335
AD  - State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research 
      Center for Eco-Environmental Sciences , Chinese Academy of Sciences , Beijing 
      100085 , People's Republic of China.
AD  - Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of 
      Chemistry , Sichuan University , Chengdu , Sichuan 610064 , People's Republic of 
      China.
FAU - Hu, Ligang
AU  - Hu L
AUID- ORCID: 0000-0002-6213-4720
AD  - State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research 
      Center for Eco-Environmental Sciences , Chinese Academy of Sciences , Beijing 
      100085 , People's Republic of China.
FAU - Hou, Xiandeng
AU  - Hou X
AD  - Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of 
      Chemistry , Sichuan University , Chengdu , Sichuan 610064 , People's Republic of 
      China.
FAU - He, Bin
AU  - He B
AUID- ORCID: 0000-0002-7071-7563
AD  - State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research 
      Center for Eco-Environmental Sciences , Chinese Academy of Sciences , Beijing 
      100085 , People's Republic of China.
FAU - Jiang, Guibin
AU  - Jiang G
AD  - State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research 
      Center for Eco-Environmental Sciences , Chinese Academy of Sciences , Beijing 
      100085 , People's Republic of China.
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20180301
PL  - United States
TA  - Anal Chem
JT  - Analytical chemistry
JID - 0370536
EDAT- 2018/02/20 06:00
MHDA- 2018/02/20 06:01
CRDT- 2018/02/20 06:00
PHST- 2018/02/20 06:00 [pubmed]
PHST- 2018/02/20 06:01 [medline]
PHST- 2018/02/20 06:00 [entrez]
AID - 10.1021/acs.analchem.7b04759 [doi]
PST - ppublish
SO  - Anal Chem. 2018 Mar 20;90(6):3683-3691. doi: 10.1021/acs.analchem.7b04759. Epub 
      2018 Mar 1.