Application of XRF and ICP-MS in Elements Content Determinations of Tieguanyin of Anxi and Hua&#39;an County, Fujian Province

Xiao-hua GUO; Peng ZHAO; Ya-qing WU; Xue-ping TANG; Di GENG; Lian-jin WENG

doi:10.3964/j.issn.1000-0593(2022)10-3124-06

Journals >Spectroscopy and Spectral Analysis >Volume 42 >Issue 10 >Page 3124 > Article

Spectroscopy and Spectral Analysis
Vol. 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

Xiao-hua GUO^1、*, Peng ZHAO^1、1;, Ya-qing WU^1、1;, Xue-ping TANG^3、3;, Di GENG^{2、2; *;}, and Lian-jin WENG^{2、2; *;}

Author Affiliations

¹1. Instrumental Analysis Center, Huaqiao University, Xiamen 361021, China

²2. College of Chemical Engineering, Huaqiao University, Xiamen 361021, China

³3. Xiamen Academy of Environmental Sciences, Xiamen 361021, China

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DOI: 10.3964/j.issn.1000-0593(2022)10-3124-06 Cite this Article

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 Copy Citation Text

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Fig. 1. Sampling sites of Tieguanyin tea in Anxi and Huaan counties

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Fig. 2. Correlation Analysis of results by XRF and ICP-MS

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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 1. Calibration curve and correlation of each element by ICP-MS

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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 2. Operating parameters for microware digestion

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元素	XRF法		ICP-MS法
元素	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 3. Results of tests for precision

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		归属地	判属类别		正确分类
		归属地	安溪铁观音	华安铁观音	正确分类
回代检验	计数/份)	安溪华安	15 1	0 14	29
回代检验	比例/%	安溪华安	100 6.7	0 93.3	96.7
交叉验证	计数/份	安溪华安	15 1	0 14	29
交叉验证	比例/%	安溪华安	100 6.7	0 93.3	96.7
预测样品验证	计数/份	安溪华安	5 0	0 5	10
预测样品验证	比例/%	安溪华安	100 0	0 100	100

Table 4. Discriminant analysis of Tieguanyin samples

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