Research on the Determination of Cadmium in Grain by Rapid Digestion-Standard Addition
Rapid digestion-standard addition based on graphite furnace atomic absorption spectrometry(GFAAS) for determining cadmium in grain of four kinds of matrix (brown rice, corn, wheat and rice) is established, by studying on digestion conditions, optimizing the proportion of sample and nitric acid, and...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Academy of National Food and Strategic Reserves Administration
2021-09-01
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| Series: | Liang you shipin ke-ji |
| Subjects: | |
| Online Access: | http://lyspkj.ijournal.cn/lyspkj/article/abstract/20210527?st=article_issue |
| _version_ | 1797813539747921920 |
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| author | WANG Xiao-wei LIU Min REN Ling-yun ZHU Da-wei ZHU Mei-jie |
| author_facet | WANG Xiao-wei LIU Min REN Ling-yun ZHU Da-wei ZHU Mei-jie |
| author_sort | WANG Xiao-wei |
| collection | DOAJ |
| description | Rapid digestion-standard addition based on graphite furnace atomic absorption spectrometry(GFAAS) for determining cadmium in grain of four kinds of matrix (brown rice, corn, wheat and rice) is established, by studying on digestion conditions, optimizing the proportion of sample and nitric acid, and using digested sample to prepare standard solution. The results show that the correlation coefficients are 0.995 to 0.999. The detection limit of method is 0.003 mg/kg. The relative error between the test result and the standard value is –3.8% to –1.1%. The standard recoveries of cadmium in low, medium and high gradient are 99.1% to 103.4%, and the RSD values of the standard substances and real samples are 1.2% to 2.7%.Compared with the results of microwave digestion method, the detection values of cadmium have no significant difference (P>0.05). The method have shown advantages in terms of accuracy and precision, and it is a rapid and accurate method to calculate cadmium in large quantities of grain samples. |
| first_indexed | 2024-03-13T07:54:15Z |
| format | Article |
| id | doaj.art-98183bcf0b3943119883a41d2c54dfd0 |
| institution | Directory Open Access Journal |
| issn | 1007-7561 |
| language | English |
| last_indexed | 2024-03-13T07:54:15Z |
| publishDate | 2021-09-01 |
| publisher | Academy of National Food and Strategic Reserves Administration |
| record_format | Article |
| series | Liang you shipin ke-ji |
| spelling | doaj.art-98183bcf0b3943119883a41d2c54dfd02023-06-02T08:50:42ZengAcademy of National Food and Strategic Reserves AdministrationLiang you shipin ke-ji1007-75612021-09-0129517117710.16210/j.cnki.1007-7561.2021.05.023Research on the Determination of Cadmium in Grain by Rapid Digestion-Standard AdditionWANG Xiao-wei0LIU Min1REN Ling-yun2ZHU Da-wei3ZHU Mei-jie4Food and Strategic Reserves Guarantee Center of Zibo, Zibo, Shandong 255039, ChinaFood and Strategic Reserves Guarantee Center of Zibo, Zibo, Shandong 255039, ChinaGrain and Oil Testing Center of Shandong Province, Jinan, Shandong 250101, ChinaFood and Strategic Reserves Guarantee Center of Zibo, Zibo, Shandong 255039, ChinaFood and Strategic Reserves Guarantee Center of Zibo, Zibo, Shandong 255039, ChinaRapid digestion-standard addition based on graphite furnace atomic absorption spectrometry(GFAAS) for determining cadmium in grain of four kinds of matrix (brown rice, corn, wheat and rice) is established, by studying on digestion conditions, optimizing the proportion of sample and nitric acid, and using digested sample to prepare standard solution. The results show that the correlation coefficients are 0.995 to 0.999. The detection limit of method is 0.003 mg/kg. The relative error between the test result and the standard value is –3.8% to –1.1%. The standard recoveries of cadmium in low, medium and high gradient are 99.1% to 103.4%, and the RSD values of the standard substances and real samples are 1.2% to 2.7%.Compared with the results of microwave digestion method, the detection values of cadmium have no significant difference (P>0.05). The method have shown advantages in terms of accuracy and precision, and it is a rapid and accurate method to calculate cadmium in large quantities of grain samples.http://lyspkj.ijournal.cn/lyspkj/article/abstract/20210527?st=article_issuegfaasrapid digestionstandard additiongraincadmium |
| spellingShingle | WANG Xiao-wei LIU Min REN Ling-yun ZHU Da-wei ZHU Mei-jie Research on the Determination of Cadmium in Grain by Rapid Digestion-Standard Addition Liang you shipin ke-ji gfaas rapid digestion standard addition grain cadmium |
| title | Research on the Determination of Cadmium in Grain by Rapid Digestion-Standard Addition |
| title_full | Research on the Determination of Cadmium in Grain by Rapid Digestion-Standard Addition |
| title_fullStr | Research on the Determination of Cadmium in Grain by Rapid Digestion-Standard Addition |
| title_full_unstemmed | Research on the Determination of Cadmium in Grain by Rapid Digestion-Standard Addition |
| title_short | Research on the Determination of Cadmium in Grain by Rapid Digestion-Standard Addition |
| title_sort | research on the determination of cadmium in grain by rapid digestion standard addition |
| topic | gfaas rapid digestion standard addition grain cadmium |
| url | http://lyspkj.ijournal.cn/lyspkj/article/abstract/20210527?st=article_issue |
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