PMID- 34554154
OWN - NLM
STAT- MEDLINE
DCOM- 20211029
LR  - 20211029
IS  - 1759-9679 (Electronic)
IS  - 1759-9660 (Linking)
VI  - 13
IP  - 36
DP  - 2021 Sep 23
TI  - Trace arsenic analysis in edible seaweeds by miniature in situ dielectric barrier 
      discharge microplasma optical emission spectrometry based on gas phase 
      enrichment.
PG  - 4079-4089
LID - 10.1039/d1ay01034d [doi]
AB  - In this work, a novel method using low-cost miniaturized hydride generation 
      optical emission spectrometry equipment coupled with an in situ dielectric 
      barrier discharge trap (HG-in situ DBD trap-OES) was established for the 
      determination of As in edible seaweed samples. An improved peak volume algorithm, 
      where the start time point and end time point of the spectrum at each 
      concentration are determined according to the unified judgment criteria, was 
      first proposed to extend the linear range from 1-100 mug L(-1) to 1-200 mug L(-1), 
      and increase the sensitivity by about 30%. In addition, a modification was done 
      on the DBD implementation, providing an enhancement of sensitivity by a factor of 
      about 4 for As. All in all the detection limit (LOD) was improved from 0.5 mug 
      L(-1) to 0.2 mug L(-1). By applying the method to seaweed samples, a method 
      detection limit (MD) of 0.25 mg kg(-1) was achieved, with less than 3% relative 
      standard deviations (RSDs). The calibration linearity reached R(2) > 0.990 in the 
      1.25-250 mg kg(-1) range. Results obtained by the proposed method showed good 
      agreement with that of certified reference materials (CRMs), and spiked 
      recoveries were 103% to 114%, indicating favorable accuracy. The proposed method 
      is attractive in terms of instrumentation size (0.6 m x 0.5 m x 0.3 m), power 
      consumption (<60 W), manufacturing cost, and gas consumption (300 measurements 
      for 4 L compressed Ar/H(2) gas), and therefore more advantageous than 
      conventional atomic spectrometric methods.
FAU - Zhang, Yaru
AU  - Zhang Y
AD  - College of Instrumentation & Electrical Engineering, Jilin University, Changchun 
      130023, China. tiandi@jlu.edu.cn.
AD  - Institute of Quality Standard and Testing Technology for Agro-products, Chinese 
      Academy of Agricultural Sciences, Key Laboratory of Agro-food Safety and Quality, 
      Ministry of Agriculture and Rural Affairs, 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, Key Laboratory of Agro-food Safety and Quality, 
      Ministry of Agriculture and Rural Affairs, Beijing 100081, China.
FAU - Tian, Di
AU  - Tian D
AUID- ORCID: 0000-0003-3005-3691
AD  - College of Instrumentation & Electrical Engineering, Jilin University, Changchun 
      130023, China. tiandi@jlu.edu.cn.
FAU - Liu, Jixin
AU  - Liu J
AD  - Institute of Quality Standard and Testing Technology for Agro-products, Chinese 
      Academy of Agricultural Sciences, Key Laboratory of Agro-food Safety and Quality, 
      Ministry of Agriculture and Rural Affairs, Beijing 100081, China.
AD  - Beijing Ability Technique Company, Limited, Beijing 100081, China.
FAU - Li, Chunsheng
AU  - Li C
AD  - College of Instrumentation & Electrical Engineering, Jilin University, Changchun 
      130023, China. tiandi@jlu.edu.cn.
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20210923
PL  - England
TA  - Anal Methods
JT  - Analytical methods : advancing methods and applications
JID - 101519733
RN  - N712M78A8G (Arsenic)
SB  - IM
MH  - *Arsenic
MH  - *Seaweed
MH  - Spectrophotometry, Atomic
EDAT- 2021/09/24 06:00
MHDA- 2021/10/30 06:00
CRDT- 2021/09/23 12:20
PHST- 2021/09/23 12:20 [entrez]
PHST- 2021/09/24 06:00 [pubmed]
PHST- 2021/10/30 06:00 [medline]
AID - 10.1039/d1ay01034d [doi]
PST - epublish
SO  - Anal Methods. 2021 Sep 23;13(36):4079-4089. doi: 10.1039/d1ay01034d.