Determination of 45 elements in Yingde black tea by ICP-MS

Authors

ZHANG Xiancai, Guangzhou Institute of Chemistry, Chinese Academy of Sciences, Guangzhou, Guangdong 510650, China; Guangdong Provincial Key Laboratory of Emergency Test for Dangerous Chemicals, Guangdong Institute of Analysis, Guangzhou, Guangdong 510070, China; Universi
ZHANG Chunhua, Guangdong Provincial Key Laboratory of Emergency Test for Dangerous Chemicals, Guangdong Institute of Analysis, Guangzhou, Guangdong 510070, China
HUANG Xiaolan, Guangdong Provincial Key Laboratory of Emergency Test for Dangerous Chemicals, Guangdong Institute of Analysis, Guangzhou, Guangdong 510070, China
WU Huiqin, Guangdong Provincial Key Laboratory of Emergency Test for Dangerous Chemicals, Guangdong Institute of Analysis, Guangzhou, Guangdong 510070, China

Abstract

The inductively coupled plasma mass spectrometry (ICP-MS) combined with microwave digestion was employed in this study for the determination of forty five elements in Yingde black tea. The results showed that 45 elements had good linearity and correlation coefficients all greater than 0.999 5. The limits of detection (LODs) were ranged from 0.000 1 to 20.090 0 μg/L. The recovery rates were between 82.58% and 119.19% with the relative standard deviations (RSDs) of 0.20%～7.03%. The RSD of all the elements except Sb was 0.15%～9.14% in precision experiments. The method was validated by standard reference material (GBW10083), the determination values of elements other than Cd are all within the standard value range. It showed that the method had the advantages of rapidness, simplicity and accuracy, which met the requirements of sample determination in terms of linearity, detection limit, precision, accuracy and recovery rate.

Publication Date

2-28-2018

First Page

62

Last Page

66,96

DOI

10.13652/j.issn.1003-5788.2018.02.014

Recommended Citation

Xiancai, ZHANG; Chunhua, ZHANG; Xiaolan, HUANG; and Huiqin, WU (2018) "Determination of 45 elements in Yingde black tea by ICP-MS," Food and Machinery: Vol. 34: Iss. 2, Article 14.
DOI: 10.13652/j.issn.1003-5788.2018.02.014
Available at: https://www.ifoodmm.cn/journal/vol34/iss2/14

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