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yind1014

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Analytical separation was carried out on a Jasco PV- 1580 HPLC unit using a Supelco 516  C18 column (15 cm ¡Á 4.6 mm, 5¦Ìm) at room temperature. The detector used was a Jasco UV-1570 UV¨Cvis spectrophotometer set at 254 nm and the volume of sample injected was 20 L. The aqueous phase was prepared by weighing 3.8 g
ammonium acetate and dissolving in 1 L water and its pH adjusted to 4.4 using acetic acid. The mobile phase used was methanol¨Cacetate buffer (pH 4.4) (35:65, v/v) for 9 min, after which it was changed to methanol¨Cacetate buffer (pH 4.4) (50:50, v/v).

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yind1014: ½ð±Ò+5, ·­ÒëEPI+1, ¡ï¡ï¡ï¡ï¡ï×î¼Ñ´ð°¸ 2012-12-22 15:47:52
·ÖÎö·ÖÀëÔÚJasco PV-1580 ÒºÏàÉ«Æ×Àï½øÐУ¬ÊÒΣ¬Supelco 516 C18 Öù×Ó¡£ ̽²âÆ÷ÊÇJasco UV-1570×ÏÍâ-¿É¼û¹â¹âÆ×ÒÇ£¬ÓÃ254nm£¬×¢ÈëÑùÆ·ÊÇ20Éý¡£Ë®ÏàÖÆ±¸ÓÉ3.8¿Ë´×Ëáï§ÈÜÓÚÒ»ÉýË®£¬Óô×Ëáµ÷½ÚPHÖÁ4.4. Á÷¶¯ÏàÓü״¼-´×ËỺ³åÒº (pH 4.4) (35:65Ìå»ý±È)£¬Ö®ºó±äΪ¼×´¼-´×ËỺ³åÒº(pH 4.4) (50:50Ìå»ý±È).
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