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genhunter
ÖÁ×ðľ³æ (ÖøÃûдÊÖ)
- ·ÒëEPI: 387
- Ó¦Öú: 259 (´óѧÉú)
- ½ð±Ò: 9757.4
- É¢½ð: 10
- ºì»¨: 60
- Ìû×Ó: 2484
- ÔÚÏß: 1793Сʱ
- ³æºÅ: 2558361
- ×¢²á: 2013-07-22
- רҵ: Ö×Áö»¯Ñ§Ò©ÎïÖÎÁÆ
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С·ÉÁú×Ð: ½ð±Ò+29, ·ÒëEPI+1, ¡ï¡ï¡ïºÜÓаïÖú, ·ÒëµÄºÜ²»´í£¬¸ÐлÏàÖú¡£ 2015-05-18 06:18:10
С·ÉÁú×Ð: ½ð±Ò+29, ·ÒëEPI+1, ¡ï¡ï¡ïºÜÓаïÖú, ·ÒëµÄºÜ²»´í£¬¸ÐлÏàÖú¡£ 2015-05-18 06:18:10
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Ëæ×Ž¡¿µÀíÄîµÄÉîÈëÈËÐÄ£¬Ê³¿ÍÃǶÔÒûʳµÄÐèÇóÇ÷Ïò¶àÔª»¯¡£²èÒ¶µÄ°²È«ÐÔÖð½¥³ÉΪʱ´úµÄ½¹µãÎÊÌâ¡£ 1. With eating healthy are getting more popular, diners look for more diversity in what kind of foods they eat. The safety of tea gradually become to people's attention in this era. Ê×ÏȲÎÕÕ¹úÄÚÍâ±ê×¼£¬ÏȶÔÌìÊ¨ÅÆ¼õ·Ê²è¼ÓÒÒëæ½øÐÐÝÍÈ¡£¬¾¹ýÔȽ¬»ìºÏ£¬ÀëÐÄÊÕ¼¯ÉÏÇåÒº¡£ÔÙ·Ö±ðͨ¹ý¹ÌÏàÝÍÈ¡ÖùEnvi-18,Envi-CarbºÍSep-2. Following domestic and foreign testing standards, we first extracted the Tian-Shi brand weight losing tea with acetonitrile, homogenized, and collected supernatant after centrifuge, and did sample preparation using solid phase extraction columns Envi - 18, Envi - Carb and Sep-pak amminopropyl columns, to enrich methyl chlorpyrifos. The collected liquids were concentrated with a water-bath under reduced pressure. By using this method the baseline matrix effect of tea can be minimized. This also reduced the adverse effects from active components in the tea. The concentrated samples were further extracted with n-hexane, then analyzed and validated with a Triple Quadrupole GC/Mass Spectrometry instrument. ·Òë½á¹ûÆÀ·Ö£º |

2Â¥2015-05-17 21:11:33
genhunter
ÖÁ×ðľ³æ (ÖøÃûдÊÖ)
- ·ÒëEPI: 387
- Ó¦Öú: 259 (´óѧÉú)
- ½ð±Ò: 9757.4
- É¢½ð: 10
- ºì»¨: 60
- Ìû×Ó: 2484
- ÔÚÏß: 1793Сʱ
- ³æºÅ: 2558361
- ×¢²á: 2013-07-22
- רҵ: Ö×Áö»¯Ñ§Ò©ÎïÖÎÁÆ

3Â¥2015-05-17 21:15:40














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