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shiranjiang
½ð³æ (ÕýʽдÊÖ)
- ·ÒëEPI: 14
- Ó¦Öú: 12 (СѧÉú)
- ½ð±Ò: 2856.9
- É¢½ð: 50
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- Ìû×Ó: 686
- ÔÚÏß: 86.6Сʱ
- ³æºÅ: 3041741
- ×¢²á: 2014-03-12
- ÐÔ±ð: MM
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RXMCDM: ½ð±Ò+1 2014-05-14 21:57:36
denglingyun: ½ð±Ò+10, ·ÒëEPI+1, ¡ï¡ï¡ïºÜÓаïÖú 2014-05-16 09:55:07
RXMCDM: ½ð±Ò+1 2014-05-14 21:57:36
denglingyun: ½ð±Ò+10, ·ÒëEPI+1, ¡ï¡ï¡ïºÜÓаïÖú 2014-05-16 09:55:07
| The method used commonly to determine the content of chromium in the food is graphite furnace atomic absorption spectrometry, and pretreatment methods usually use dry ashing and traditional wet digestion method(nitric acid+ perchloric acid). The new pretreatment method that is a wet digestion method with nitric acid + sulfuric acid+ hydrogen peroxide(30% of concentration) is used to replace the traditional in the experiment,then measure the content of chromium in potato by graphite furnace atomic absorption spectrometry. The results show that the new method can be used as a selection method applied in the actual work with safe operation, simpleness, complete digestion and accurate results. |
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- ×¢²á: 2011-05-05
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