高效液相色谱法同时测定三七中5种核苷和碱基的含量（英文）

目的测定三七不同部位中5种核苷类成分胞苷、尿苷、鸟苷、腺苷和尿嘧啶含量。方法采用Zorbax SB-Aq色谱柱;以8mmol·L-1醋酸铵水溶液（A）和甲醇（B）为流动相梯度洗脱,在25℃条件下流速为1mL·min-1;检测波长为260nm。结果胞苷、尿苷、鸟苷、腺苷和尿嘧啶线性范围分别为1.79-57.40μgm·L^-1（r^2=1.0000）,3.30-105.60μgm·L^-1（r^2=1.0000）,3.09-98.80μgm·L^-1（r^2=0.9999）,2.77-88.60μgm·L^-1（r^2=1.0000）和0.38-12.30μgm·L^-1（r^2=1.0000）;加样回收率分别为93.9%,96.5%,92.7%,93.2%和98.8%。三七不同部位中5种核苷类成分的含量差异显著。结论本文首次报道了三七中核苷类成分的含量,其对完善三七药材的质量控制具有一定的指导意义。     

RP—HPLC法同时测定半夏中5种核苷含量的研究

目的:采用反相高效液相色谱法检测半夏药材中的核苷类成分,同时对检测确定的5种核苷进行含量测定。方法:核苷检测采用3种色谱条件,通过与对照品的对照,确定在半夏中5种核苷分别为尿嘧啶、黄嘌呤、尿苷、肌苷、鸟苷。含量测定采用 Ace C_(18)柱(150mm×4.6mm,5μm),以水为流动相,流速:0.8mL·min~(-1),测定波长254nm。结果:尿嘧啶、黄嘌呤为首次在半夏中检测到。尿嘧啶、黄嘌呤、尿苷、肌苷、鸟苷的线性范围依次为0.82～8.16,1.52～15.24,3.30～33.04,0.50～5.02,2.98～29.84μg·mL(-1)。r=0.9995～0.9999;回收率:96.4%～102.3%。结论:以 RP-HPLC 法同时测定半夏药材中的5种核苷快速、简便,结果可靠,为测定半夏中核苷类成分提供了有效的方法。     

HPLC法同时测定人工蛹虫草不同部位中5种核苷类成分的含量

目的:建立同时测定人工蛹虫草不同部位中5种核苷类成分含量的方法。方法:采用高效液相色谱法。色谱柱为InertSustain C18,流动相为甲醇-0.02 mol/L磷酸二氢钾溶液(梯度洗脱),流速为0.6 m L/min,检测波长为254 nm,柱温为30℃。结果:尿苷、肌苷、鸟苷、腺苷和虫草素检测进样量线性范围分别为0.568~3.408μg(r=0.999 9)、0.284~1.704μg(r=0.999 9)、0.264~1.584μg(r=0.999 9)、0.232~1.392μg(r=0.999 9)、1.672~10.032μg(r=0.999 8);精密度、稳定性、重复性试验的RSD<3.0%;加样回收率分别为98.2%~103.9%(RSD=1.97%,n=9)、96.2%~101.6%(RSD=1.76%,n=9)、96.7%~102.0%(RSD=1.94%,n=9)、95.1%~99.4%(RSD=1.43%,n=9)和95.6%~101.3%(RSD=1.82%,n=9)。结论:该方法操作简便,精密度、稳定性、重复性好,可用于人工蛹虫草中5种核苷类成分含量的同时测定,蛹虫草不同部位中所含核苷类成分含量不同。     

HPLC法同时测定头孢拉定和精氨酸的含量

以ＨＰＬＣ外标法同时测定注射用头孢拉定（含精氨酸）中头孢拉定、精氨酸和杂质头孢氨苄的含量。方法;采用ＳｐｈｅｒｉｓｏｒｂＣ１８柱,乙腈－醋酸盐缓冲液（１２：８８）为流动相,检测波长２００ｎｍ。结果：该法能罗好地分离被测组分和有关杂质,被测组分的线性关系良好,回收率满意,结论：该法专属性好,快速,准确。     

HPLC法同时测定不同产地半夏中7种核苷类成分的含量

目的 建立高效液相色谱(HPLC)法同时测定不同产地半夏中鸟苷、胸腺嘧啶核苷、肌苷、尿苷、腺嘌呤、腺苷、尿嘧啶7种核苷类成分含量的方法。方法 采用C₁₈色谱柱(赛默飞,5μm, 4.6 mm×250 mm);流动相为乙腈(A)-0.05%磷酸溶液(B),梯度洗脱;流速1.0 ml/min;检测波长250 nm;柱温30℃;进样量10μl。结果 半夏中7种核苷类成分的分离度较好,鸟苷、胸腺嘧啶核苷、肌苷、尿苷、腺嘌呤、腺苷、尿嘧啶的线性方程分别为Y_鸟苷=11.851X+3.562 1、Y_{胸腺嘧啶核苷}=9.422X+0.191 5、Y_肌苷=11.619X+2.816 0、Y_尿苷=11.818X-1.405 1、Y_腺嘌呤=14.849X+0.510 9、Y_腺苷=16.471X+1.906 3、Y_尿嘧啶=14.758X+5.562 5;平均加样回收率分别为99.41%、98.70%、98.84%、98.37%、97.83...     

HPLC法同时测定地黄喷雾剂中没食子酸和盐酸小糪碱含量

目的：建立地黄喷雾剂中没食子酸和盐酸小糪碱的HPLC含量测定方法。方法：采用ZORBAX SB-C18色谱柱（250 mm ×4.6 mm,5μm）,以乙腈-0.1%磷酸溶液为流动相,采用梯度洗脱程序,流速为1.0 ml·min^-1,检测波长为270 nm,柱温为30℃。结果：没食子酸和盐酸小檗碱的线性范围分别为20.36~305.40μg·ml-1（r=0.9996）和20.08~301.20μg· ml^-1（r=0.9998）,回收率分别为98.9%和98.5%,RSD分别为1.3%和1.5%。结论：该方法简单、可靠、准确,可用于地黄喷雾剂中没食子酸和盐酸小檗碱的含量测定。     

高效液相色谱法测定僵蚕中4种核苷,碱基的含量

高效液相色谱法测定僵蚕中４种核苷、碱基的含量南京中医药大学南京２１００２９李伟文红梅张艾华俞琏郭戎僵蚕为蚕娥科昆虫家蚕ＢｏｍｂｙｘｍｏｒｉＬ．４～５龄的幼虫感染（或人工接种）白僵菌Ｂｅａｕｖｅｒｉａｂａｓｓｉａｎａ（Ｂａｌｓ．）Ｖｕｉｌ．而致死的干燥...     

响应面设计优化地黄中梓醇的提取工艺

目的 优化地黄中梓醇的提取工艺。方法 在单因素分析的基础上,以梓醇含量为响应值,采用响应面设计法对其提取工艺进行研究。结果 最佳工艺条件为乙醇浓度80％,提取温度85℃,料液比为1:8,提取时间为1h。结论 优选工艺稳定可靠,可为工业生产提供参考依据。     

高效液相色谱法测定地黄干茎中梓醇的含量

目的：测定地黄干茎中梓醇的含量。方法：采用高效液相色谱（HPLC）法，色谱柱为Diamond C18（150mm×4.6mm,5μm），流动相写乙腈-水（0．5：99．5），流速1．0mL／min，柱温25℃，检测波长210nm，进样量5μL。结果：地黄干茎中梓醇含量为8．5％。结论：地黄中茎中梓醇含量较高，建议对地黄干茎进行研究，以便开发利用。     

不同产地的地黄中梓醇含量比较

目的：测定不同产地地黄中梓醇含量。方法：薄层扫描法，展开剂为氯仿－甲醇－水（7：4：0．5），显色剂为10％硫酸－乙醇，扫描波长为413nm。结果：回归方程：Y＝621．76X＋118．69，r＝0．9966，平均因收率为99．10％，RSD＝2．50％。结论：河南温县产地黄中梓醇含量较高，山东嘉祥产地黄中梓醇含量较低。     

加压溶剂提取-高效液相色谱法测定天然和人工虫草中的麦角甾醇、核苷及其碱基

目的建立同时测定虫草中麦角甾醇、核苷及其碱基含量的简便方法。方法正交法优化加压溶剂提取条件；HPLC法同时测定天然和人工虫草中上述成分的含量。结果以甲醇为提取溶剂，提取温度160 ℃，提取时间5 min，提取压力10 MPa，循环1次，提取1次。采用Zorbax NH₂分析柱(250 mm×4.6 mm ID, 5 μm)，流动相为A(乙腈)-B(10 mmol·L^-1醋酸铵溶液)二元梯度洗脱：0-5.0 min，B%为0→15%；5.0-25.0 min，B%为15%→20%；25.0-35.0 min，B%为20%→ 40%；35.0-45.0 min，B%为40%→ 80%；45.0-50.0 min，B%为80%。结论本法能够快速、简便地测定虫草中麦角甾醇、核苷及其碱基的含量。     

高效液相色谱法测定盐酸噻氯匹定胶囊的含量

目的建立盐酸噻氯匹定胶囊的高效液相色谱 (HPLC)含量测定方法。方法盐酸噻氯匹定胶囊的HPLC含量测定色谱条件 :ODS柱 ,流动相 :0 .1%三乙胺溶液 (用磷酸调pH 2 .5 ) 甲醇 (6 0∶4 0 ) ,检测波长 :2 33nm ,流速 :1.0ml/min。结果盐酸噻氯匹定胶囊HPLC含量测定方法的线性范围为 10ng～ 10 μg ,日内RSD为0 .5 0 % ,日间RSD为 0 .4 6 %。结论此方法简便 ,准确可靠 ,耐用性好     

高效液相色谱法同时测定金花清感颗粒中14种成分含量

目的:建立高效液相色谱法(HPLC)同时测定金花清感颗粒中新绿原酸、马钱苷酸、绿原酸、咖啡酸、獐牙菜苷、连翘酯苷A、芹菜素-7-O-β-D-吡喃葡萄糖苷、黄芩苷、连翘苷、牛蒡子苷、汉黄芩苷、黄芩素、白杨素、千层纸素共14种成分的含量,为金花清感颗粒的质量控制提供参考.方法:采用Agilent-Eclipse XDB-C...     

Simultaneous determination of tolperisone and lidocaine by high performance liquid chromatography

A reversed phase high performance liquid chromatographic (RP-HPLC) method for the simultaneous determination of tolperisone (TP) and lidocaine (LD) has been developed. The drugs were separated on a column (4.60×250 mm²) Spherisorb ODS (5 μm) using 5.5% triethylamine in 70/30 v/v acetonitrile/water as mobile phase 0.7 ml min⁻¹and UV detection at 254 nm. The detection limits for Tolperisone hydrochloride (TP·HCl) and lidocaine hydrochloride (LD·HCl) were 0.20 ng/20 μl and 100 ng/20 μl and the quantitation limits were 0.50 ng/20 μl and 250 ng/20 μl, respectively. Linear calibration curves over the ranges of 1–10, 10–100 and 150–500 μg ml⁻¹ for TP·HCl and 10–500 μg ml⁻¹ for LD·HCl were established. Different calibration slopes were found for TP probably owing to changes in refractive index due to increase in TP concentration. The average recoveries of the added TP in the samples (TP·HCl tablets and injection liquid). A solutions spiked with standard TP·HCl were 99.9 and 99.7% with the RSD (n=11) of 0.66 and 0.67%, respectively. The average recovery of the added LD in the sample (injection) spiked with standard LD·HCl was 98.9% with the RSD (n=11) of 0.59%. The proposed method has been applied to the determination of TP·HCl and LD·HCl in commercial products available in Thailand. Comparative determination of TP by UV spectrophotometry and LD by colorimetry were also carried out. The results obtained by both methods were in good agreement of those obtained by the proposed method verified by using t-test. The proposed RP-HPLC method is simple, accurate, reproducible and suitable for routine analysis.     

Simultaneous determination of serum flecainide and its metabolites by using high performance liquid chromatography

Simultaneous determination of serum flecainide and its oxidative metabolites was carried out by using high performance liquid chromatography (HPLC) equipped with conventional octadecylsilyl silica (ODS) column and fluorescence detector. Flecainide and its metabolites, m-O-dealkylated flecainide (MODF) and m-O-dealkylated lactam of flecainide (MODLF) in serum were extracted with ethyl acetate. The recoveries of flecainide, MODF and MODLF were greater than 92, 93, and 60% with the coefficient of variations (CVs) less than 3.2, 5.8, and 5.3%, respectively. The calibration curves were linear at the concentration range of 50–1500 ng/mL for flecainide and 10–500 ng/mL for MODF and MODLF (r>0.999). The CVs for intra-day assay were 2.7–5.3% for flecainide, 3.0–4.2% for MODF, and 3.7–4.3% for MODLF, respectively. The CVs for inter-day assay were 7.0–8.4% for flecainide, 3.3–6.7% for MODF, and 4.4–7.7% for MODLF, respectively. This assay method can be used for assessing the metabolic ability of flecainide in the patients with tachyarrhythmia.