Spectroscopy and Spectral Analysis, Volume. 41, Issue 10, 3021(2021)
Analysis of Metal Impurity Elements in Li4Ti5O12 Through Microwave Plasma Atomic Emission Spectroscopy
Figures & Tables(6)
Fig. 1. Spectral interferences for Pb 405.781 nm corrected using FLIC
Fig. 2. Correction effect of ionization suppression solution CsNO3 on ionization interferences
Fig. 3. Four-hour stability plot for analytes in Li4Ti5O12 sample solution
Table 1. Parameter of calibration curve and the method detect limit (MDL)
View tableView in ArticleTable 1. Parameter of calibration curve and the method detect limit (MDL)
Element Linear range
/(μg·L-1)Coefficient
(r)MDL
/(μg·g-1)Element Linear range
/(μg·L-1)Coefficient
(r)MDL
/(μg·g-1)Mn 0.30~200 0.999 7 0.09 Fe 2.58~50 0.999 8 0.77 Na 0.16~2 000 0.999 7 0.05 Al 0.70~200 0.999 9 0.21 Pb 1.38~50 0.999 9 0.41 Mg 0.17~200 0.999 5 0.05 Ni 1.03~50 0.999 8 0.31 Cu 1.30~200 0.999 3 0.39 Cr 0.52~50 0.999 9 0.16 Ca 0.27~200 0.999 7 0.08 Zn 0.93~50 0.999 5 0.28 Cd 0.40~50 0.999 8 0.12 K 0.10~10 000 0.999 8 0.03 Co 0.82~50 0.999 6 0.25
Table 2. Evaluation of the accuracy and precision of analytical methods (
n =6)View tableView in ArticleTable 2. Evaluation of the accuracy and precision of analytical methods (
n =6)Element Spiked
/(μg·L-1)Total found
/(μg·L-1)RSD
/%Recovery
/%GB/T 30836—2014
/(μg·L-1)t test Mn 100 98.7±2.60 2.63 98.7 99.1±3.25 p=0.41 Na 1 000 966±21.2 2.19 96.6 974±36.8 p=0.33 Pb 10 9.73±0.28 2.88 97.3 9.96±0.18 p=0.06 Ni 10 9.91±0.27 2.72 99.1 10.2±0.33 p=0.06 Cr 10 10.2±0.34 3.33 102 10.3±0.30 p=0.30 Zn 10 9.80±0.19 1.94 98.0 10.1±0.32 p=0.04 K 1 000 1030±40.1 3.89 103 1 060±53.6 p=0.15 Fe 10 10.2±0.32 3.13 102 10.4±0.26 p=0.13 Al 100 101±3.06 3.03 101 102±2.52 p=0.28 Mg 100 104±2.71 2.61 104 102±3.75 p=0.16 Cu 100 98.2±2.55 2.60 98.2 101±2.98 p=0.06 Ca 100 99.0±3.14 3.17 99.0 96.6±3.69 p=0.13 Cd 10 10.3±0.29 2.82 103 10.1±0.24 p=0.11 Co 10 9.64±0.17 1.76 96.4 9.81±0.35 p=0.15
Table 3. Analytical results of Li4Ti5O12 samples (μg·g-1,
n =6)View tableView in ArticleTable 3. Analytical results of Li4Ti5O12 samples (μg·g-1,
n =6)Element Sample A Sample B Element Sample A Sample B Found Certified Found Certified Found Certified Found Certified Mn 16.7±0.51 16.4 39.1±1.10 38.7 Fe 7.32±0.30 7.50 12.8±0.43 13.1 Na 659±21.0 665 287±10.4 293 Al 14.3±0.46 14.1 27.1±0.73 28.0 Pb 9.22±0.35 9.43 4.11±0.18 4.17 Mg 38.2±1.07 39.5 21.5±0.62 22.1 Ni 1.13±0.02 1.10 1.08±0.03 2.11 Cu 11.6±0.41 11.9 28.3±0.79 29.4 Cr 6.27±0.19 6.32 4.31±0.14 4.28 Ca 20.8±0.73 21.2 16.0±0.51 15.7 Zn 5.13±0.16 5.08 2.08±0.07 2.11 Cd 1.34±0.03 1.33 2.09±0.05 2.12 K 4 160±165 4190 2 530±90.2 2 600 Co 4.67±0.15 4.72 2.36±0.04 2.35
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Hong-wei LIU, Liang FU. Analysis of Metal Impurity Elements in Li4Ti5O12 Through Microwave Plasma Atomic Emission Spectroscopy[J]. Spectroscopy and Spectral Analysis, 2021, 41(10): 3021
Paper Information
Category: Research Articles
Received: Sep. 7, 2020
Accepted: --
Published Online: Oct. 29, 2021
The Author Email: Hong-wei LIU (hwl0466@163.com)
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