Spectroscopy and Spectral Analysis, Volume. 42, Issue 10, 3124(2022)
Application of XRF and ICP-MS in Elements Content Determinations of Tieguanyin of Anxi and Hua'an County, Fujian Province
Figures & Tables(6)
Fig. 1. Sampling sites of Tieguanyin tea in Anxi and Huaan counties
Table 1. Calibration curve and correlation of each element by ICP-MS
View tableView in ArticleTable 1. Calibration curve and correlation of each element by ICP-MS
元素 回归方程 相关性
系数检出限/
(μg·kg-1)K Y=0.005 4X+0.301 3 1.000 0 2.541 Ca Y=4.151 7×10-4X+0.011 9 1.000 0 28.71 Mg Y=0.014 0X+0.020 0 1.000 0 0.822 Al Y=0.002 8X+0.019 7 0.999 8 1.323 Fe Y=0.002 5X+0.005 2 1.000 0 1.001 Mn Y=0.027 8X+0.003 9 1.000 0 0.061 Zn Y=0.007 1X+0.004 5 1.000 0 0.318 Sr Y=0.012 1X+0.002 3 0.999 9 0.049 Na Y=0.028 0X+13.953 1.000 0 48.05 Rb Y=0.002 8X+0.006 2 0.999 7 0.994
Table 2. Operating parameters for microware digestion
View tableView in ArticleTable 2. Operating parameters for microware digestion
步骤 参数 功率
/W温度
/℃时间
(hh:mm:ss)搅拌
速度风扇
高度1 功率上升 500 8:00 关 1 2 功率保持 500 5:00 关 1 3 功率上升 1 000 8:00 关 1 4 功率保持 1 000 25:00 关 1 5 冷却 70 关 3
Table 3. Results of tests for precision
View tableView in ArticleTable 3. Results of tests for precision
元素 XRF法 ICP-MS法 平均值/% RSD/% 平均值/% RSD/% K 1.693 3 1.10 1.756 7 1.28 Ca 0.321 2 0.89 0.317 5 1.30 S 0.243 5 1.06 - - P 0.190 5 2.07 - - Mg 0.211 2 1.10 0.217 2 0.79 Al 0.125 5 2.35 0.124 5 2.72 Si 0.021 6 2.96 - - Cl 0.033 7 1.76 - - Fe 0.011 3 1.63 0.011 2 1.36 Mn 0.113 5 2.96 0.113 1 2.09 Rb 0.002 4 5.12 0.002 0 2.06 Zn 0.001 5 3.53 0.001 5 1.60 Na - - 0.006 4 2.89 Sr - - 0.001 4 2.95
Table 4. Discriminant analysis of Tieguanyin samples
View tableView in ArticleTable 4. Discriminant analysis of Tieguanyin samples
归属地 判属类别 正确
分类安溪
铁观音华安
铁观音回代检验 计数/份) 安溪
华安15
10
1429 比例/% 安溪
华安100
6.70
93.396.7 交叉验证 计数/份 安溪
华安15
10
1429 比例/% 安溪
华安100
6.70
93.396.7 预测样品验证 计数/份 安溪
华安5
00
510 比例/% 安溪
华安100
00
100100
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Xiao-hua GUO, Peng ZHAO, Ya-qing WU, Xue-ping TANG, Di GENG, Lian-jin WENG. Application of XRF and ICP-MS in Elements Content Determinations of Tieguanyin of Anxi and Hua'an County, Fujian Province[J]. Spectroscopy and Spectral Analysis, 2022, 42(10): 3124
Paper Information
Category: Research Articles
Received: Aug. 17, 2021
Accepted: Nov. 25, 2021
Published Online: Nov. 23, 2022
The Author Email: Xiao-hua GUO (xiaohuaguo@hqu.edu.cn)
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