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价格:电议
所在地:广东 深圳市
型号:等度液相色谱仪
更新时间:2024-03-07
浏览次数:1078
公司地址:深圳市宝安区松岗街道广深路松岗段109号金海大厦206室
夏生(先生) 经理
液相色谱仪 色谱仪应用 液相色谱仪方法
'Times New Roman';font-size: 21px">4种动物药水提液中'Times New Roman';font-size: 21px">3种嘌呤碱'Times New Roman';font-size: 21px">HPLC法测定
对乌蛇、蟾蜍、土虫和地龙干燥粉末进行超声提取、离心分离、滤膜过滤后直接注入液相色谱仪中测定'Times New Roman';font-size:16px">,紫外检测黄嘌呤、次黄嘌呤、腺嘌呤含量。
一、 主要仪器和试剂
等度液相色谱仪,配紫外检测器
超声波清洗机 离心机:'Times New Roman';font-size:16px">10 000 r /min
无油真空泵 溶剂过滤器
柱温箱 甲醇:色谱纯
标准品'Times New Roman';font-size:16px">:次黄嘌呤'Times New Roman';font-size:16px">( hypoxanthine) 、黄嘌呤'Times New Roman';font-size:16px">( xanthine) 、腺嘌呤'Times New Roman';font-size:16px">( adenine)
实验室用水为超纯水
二、 色谱条件
色谱柱:'Times New Roman';font-size:16px">C18色谱柱,'Times New Roman';font-size:16px">250 mm ×'Times New Roman';font-size:16px">4.'Times New Roman';font-size:16px">6 mm, 5μ'Times New Roman';font-size:16px">m
流动相:甲醇:水=5:95(V:V)
流速:1.0'Times New Roman';font-size:16px"> mL /min
柱温:'Times New Roman';font-size:16px">30 ℃
检测波长:'Times New Roman';font-size:16px">254 nm
进样量:'Times New Roman';font-size:16px">20μ'Times New Roman';font-size:16px">L
'Times New Roman';font-weight:bold;font-size:21px">三、 标准试样配置
将标准品配制成浓度为'Times New Roman';font-size:16px">01'Times New Roman';font-size:16px">5 g/L标准储备液,逐级稀释'Times New Roman';font-size:16px">,配制成浓度为'Times New Roman';font-size:16px">51'Times New Roman';font-size:16px">0 ×'Times New Roman';font-size:16px">10'Times New Roman';font-size:16px;vertical-align:super">- 9、'Times New Roman';font-size:16px">11'Times New Roman';font-size:16px">0 ×'Times New Roman';font-size:16px">10'Times New Roman';font-size:16px;vertical-align:super">- 8、'Times New Roman';font-size:16px">21'Times New Roman';font-size:16px">0 ×'Times New Roman';font-size:16px">10'Times New Roman';font-size:16px;vertical-align:super">- 8、'Times New Roman';font-size:16px">51'Times New Roman';font-size:16px">0 ×'Times New Roman';font-size:16px">10'Times New Roman';font-size:16px;vertical-align:super">- 8、'Times New Roman';font-size:16px">11'Times New Roman';font-size:16px">0 ×'Times New Roman';font-size:16px">10'Times New Roman';font-size:16px;vertical-align:super">- 7、'Times New Roman';font-size:16px">21'Times New Roman';font-size:16px">0 ×'Times New Roman';font-size:16px">10'Times New Roman';font-size:16px;vertical-align:super">- 7、'Times New Roman';font-size:16px">51'Times New Roman';font-size:16px">0 ×'Times New Roman';font-size:16px">10'Times New Roman';font-size:16px;vertical-align:super">- 7、'Times New Roman';font-size:16px">81'Times New Roman';font-size:16px">0 ×'Times New Roman';font-size:16px">10'Times New Roman';font-size:16px;vertical-align:super">- 7'Times New Roman';font-size:16px"> g/mL的标准系列'Times New Roman';font-size:16px">,经'Times New Roman';font-size:16px">0.'Times New Roman';font-size:16px">45μ'Times New Roman';font-size:16px">m滤膜过滤后'Times New Roman';font-size:16px">,直接注入色谱仪测
其峰高'Times New Roman';font-size:16px">,以质量浓度'Times New Roman';font-size: 16px">c 'Times New Roman';font-size:16px">( g/mL)对峰高'Times New Roman';font-size: 16px">y进行线性回归'Times New Roman';font-size:16px">,得次黄嘌呤、黄嘌呤、腺嘌呤线性方程分别为'Times New Roman';font-size:16px">: 'Times New Roman';font-size: 16px">y 'Times New Roman';font-size:16px">=81'Times New Roman';font-size:16px">935 8'Times New Roman';font-size: 16px">x 'Times New Roman';font-size:16px">- 11'Times New Roman';font-size:16px">219 7 ( 'Times New Roman';font-size: 16px">r 'Times New Roman';font-size:16px">=01'Times New Roman';font-size:16px">999 7) ; 'Times New Roman';font-size: 16px">y 'Times New Roman';font-size:16px">=31'Times New Roman';font-size:16px">242 6'Times New Roman';font-size: 16px">x 'Times New Roman';font-size:16px">+01'Times New Roman';font-size:16px">562 5 ( 'Times New Roman';font-size: 16px">r 'Times New Roman';font-size:16px">=01'Times New Roman';font-size:16px">999 9) ; 'Times New Roman';font-size: 16px">y 'Times New Roman';font-size:16px">=31'Times New Roman';font-size:16px">951 6'Times New Roman';font-size: 16px">x 'Times New Roman';font-size:16px">- 01'Times New Roman';font-size:16px">516 9 ( 'Times New Roman';font-size: 16px">r 'Times New Roman';font-size:16px">=01'Times New Roman';font-size:16px">999 6)。
四、 试样配置
分别将乌蛇、蟾蜍、土虫、地龙样品粉碎、混匀、过孔径为'Times New Roman';font-size:16px">180μ'Times New Roman';font-size:16px">m筛'Times New Roman';font-size:16px">,准确称取样品置于试剂瓶中'Times New Roman';font-size:16px">,加入纯净水'Times New Roman';font-size:16px">8 mL,盖紧瓶塞'Times New Roman';font-size:16px">,超声提取一定时间'Times New Roman';font-size:16px">,将提取液转入离心管中'Times New Roman';font-size:16px">,以'Times New Roman';font-size:16px">10 000 r /min离心'Times New Roman';font-size:16px">10 min,清液转入'Times New Roman';font-size:16px">10 mL容量瓶中定容、摇匀。经'Times New Roman';font-size:16px">0.'Times New Roman';font-size:16px">45μ'Times New Roman';font-size:16px">m滤膜过滤后直接注入色谱仪测定。以保留时间定性'Times New Roman';font-size:16px">,外标峰高法定量。