The Effects of Different Solvents on the Determination of Lead in Pork Were Discussed
Beijing Changping District Farmland Protection Station, Beijing 102299, China
| Abstract: | [Objective]: To optimize the graphite furnace atomic absorption spectrometry, compare the effects of blank pork matrix and 1% nitric acid as solvent on the detection of lead in pork, and establish a method for quantitative detection of lead in pork. [Methods]: The graphite furnace heating program and matrix modifier were optimized, and the method was screened. The results of three-level standard addition test and quality control product test of these two solvents were compared. [Results]: Under the screening conditions, with blank pork matrix as solvent, the correlation coefficient of the standard curve was 0.9999, the recovery rate of the three levels was 91.9% ~ 97.9%, and the coefficient of variation was 4.9% ~ 13.1%. The detection limit was 0.0134 mg / Kg. The test results of quality control products were within the allowable range; the test results with 1% nitric acid as solvent did not meet the standard requirements. [Conclusion]: Under the screening conditions, the accurate detection of lead in pork can be achieved by graphite furnace atomic absorption spectrometry with blank pork matrix as solvent. |
| Keywords: | Graphite Furnace-atomic Absorption Method; Matrix; Matrix Modifier; Detection Limit |
| DOI: | 10.57237/j.wjfse.2024.01.001 |
View:
Downloads:
Received: 1 January 2024
Accepted: 8 March 2024
Published Online: 18 March 2024
References
| [1] | WEISS J, GIBIS M, SCHUH V, etal. Advance in ingredient and processing systems for meat and meat products [J]. Meat Science, 2010, 86(1): 196~213. |
| [2] | Fu Xiucai. The heavy metal crisis of ' Rest assured meat ' [J]. Environment, 2009, (7): 62 ~ 63. |
| [3] | Quan Meiping. Determination of heavy metal content in meat and viscera of livestock and poultry by microwave digestion-atomic absorption spectrometry [J]. Animal husbandry and veterinary, 2013, 4(6): 69 ~ 71. |
| [4] | Ye Tieqiao. Heavy metal pollution incidents occur frequently [N]. China Youth Daily, 2012-2-1(7). |
| [5] | Liu Wenbo. Study on the determination method of harmful heavy metal residues in animal derived food [D]. Beijing: Beijing University of Chemical Technology, 2011. |
| [6] | Ministry of Health of the People's Republic of China GB 2762-2022, National food safety standard Limits of pollutants in food [S]. Beijing: China Standards Publishing House, 2017. |
| [7] | Wei Junxiao. Heavy metal content characteristics and health risk assessment of food sold in Beijing [D]. Beijing: China University of Geosciences, 2019. |
| [8] | Wu Yongning, Zhao Yunfeng, Li Jingguang. Fifth Chinese Total Diet Study [M]. Beijing: Science Press, 2018, 1-66. |
| [9] | Wang Fang. Research progress on determination of heavy metals in food by atomic absorption spectrometry [J] Modern food, 2015, 60-61. |
| [10] | Shuai Jin, Gong Weidong, Liu Shengnan, Weixing, Zhang Guoqing. Advances in determination of heavy metal elements in food by atomic absorption spectrometry [J]. Grain and oil processing, 2014, 62 ~ 64, 67. |
| [11] | Zhu Qisi, Jiang Huabang, Zhong Guocai. Optimization and distribution of graphite furnace atomic absorption spectrometry for determination of cadmium in rice [J]. Journal of Henan University of Technology (Natural Science Edition), 2011, 32(6): 76-79. |
| [12] | National Health and Family Planning Commission of the People's Republic of China GB5009. 12-2017, Determination of lead in food by national food safety standard [S]. Beijing: China Standard Press, 2017. |
| [13] | General Administration of Quality Supervision of the People's Republic of China, China National Standardization Management Committee. GB / T27404-2008 Laboratory quality control specification Food physical and chemical testing [S]. Beijing: China Standard Press, 2008. |
| [14] | Li Aijun, Zheng Baiqin, Pang Xueliang, Dong Lixue, Zhang Xin, Zhou Xin, Tang Sining, Xiang Aili. Microwave digestion ICP-MS determination of 9 metal elements in pork [J]. Chinese Journal of Veterinary Medicine, 2015, 49(4): 42 ~ 45. |
| [15] | Zeng Dan, Zhang Ying, Ding Guosheng. Determination of six heavy metal elements in pork lean meat by microwave digestion ICP-MS [J]. Meat Research, 2012, 26(11): 20 ~ 22. |
| [16] | Jin Hongguo, Lyu Xin, Li Le, Liu Hualin, Li Tingting. Determination of six heavy metal elements in meat and meat products by microwave digestion inductively coupled plasma mass spectrometry [J]. Meat research, 2015, 29(4): 31 ~ 34. |
| [17] | Chen Liping, Zhang Zhiyong, Zhang Hongyu, Liu Min, Hao Yu, Wang Fule, Tian Yuchao. Graphite furnace atomic absorption method for the determination of lead in strawberries was optimized [J]. Journal of food safety and quality inspection, 2019, 10(10): 3202 ~ 3208. |
| [18] | Liu Jieying, Xu Yan, Du Pengcheng, Wang Nan, Zhang Xuejie, Gong Biao. Low temperature pre-digestion-microwave digestion-graphite furnace atomic absorption spectrometry determination of lead in nuts [J]. Chinese Journal of Health Inspection, 2016, 26(14): 2027-2029. |
| [19] | Zang Lina, Zhan Shexia, Zhao Qingqi. Direct Determination of Lead in Soy Sauce by Matrix Modifier Atomic Absorption Spectrometry [J]. Chinese Journal of Health Inspection, 2004, 1(1): 113 ~ 114. |
Join the Editorial Board
We invite active, qualified and high profile scientists and researchers to join as Editorial Board Members.
Join UsBecome a Reviewer
Scholars with a strong interest in reviewing are invited to join the reviewer panel to ensure the quality of the research to be published.
Join Us