高效液相色谱-双波长检测-梯度洗脱法同时测定小儿氨酚烷胺颗粒中的3种有效组分

建立了高效液相色谱(HPLC)-双波长检测-梯度洗脱同时测定小儿氨酚烷胺颗粒中对乙酰氨基酚、咖啡因和马来酸氯苯那敏含量的分析方法。采用的色谱条件: 以Diamonsil C18色谱柱(4.6×200 mm, 5 μm)为分离柱,以乙腈和0.1%三乙胺水溶液(用磷酸调pH至3.7±0.5)为流动相进行梯度洗脱,流速1.0 mL/min,检测波长为280 nm和210 nm,柱温为30 ℃,进样量为5 μL。结果表明,对乙酰氨基酚、咖啡因和马来酸氯苯那敏的线性范围均比较宽(依次为2.4～60、0.14～3.6、0.019～0.48 μg),平均加标回收率均不低于99.0%,而且方法操作简单,重现性好,测定结果准确,可用于更好地控制该制剂的质量。     

单层碳纳米管修饰电极上盐酸曲普利啶的电化学行为及其应用研究

应用循环伏安法研究了盐酸曲普利啶在碳纳米管修饰电极上的电化学行为.结果表明:在0.1 mol/L磷酸盐缓冲溶液(pH 6.9)中,盐酸曲普利啶产生一灵敏的氧化峰,其峰电位为0.81 V(vs.Ag/AgCl),峰电流与盐酸曲普利啶在1.0×10-6～1.3×10-4 mol/L浓度范围内呈线性关系,检出限为5.0×10-7mol/L,已用于片剂中盐酸曲普利啶的测定.     

高效液相色谱多波长同时测定阿咖酚散中对乙酰氨基酚、咖啡因、阿司匹林、水杨酸

采用高效液相色谱多波长同时测定阿咖酚散中对乙酰氨基酚、咖啡因、阿司匹林、水杨酸的含量。使用岛津LC–20AT高效液相色谱仪、Venusil MP–C_(18)(150 mm×4.6 mm,5μm)色谱柱,采用多波长进行分析。流动相为磷酸盐缓冲液(0.01 mol/L磷酸二氢钾溶液,用磷酸调节pH为2.6±0.1)–甲醇(体积比为7∶3),流量为1.0 mL/min,检测波长:对乙酰氨基酚、咖啡因276 nm,阿司匹林254 nm,水杨酸241 nm,柱温为30℃。3种主要成分和有关杂质的分离度良好,标准曲线线性相关系数均大于0.997。乙酰氨基酚、咖啡因、阿司匹林、水杨酸的平均回收率分别为99.9%、101.2%、98.4%、99.0%,测定结果的相对标准偏差分别为1.16%、1.35%、1.23%、20.0%(n=5)。多波长法测定阿咖酚散中3种成分及杂质准确、灵敏,可以用于阿咖酚散的定量检测和质量控制。     

高效液相色谱法同时测定快安抗感冒液中5种组分的含量

采用高效液相色谱法（HPLC）同时测定快安抗感冒液中对乙酰氨基酚、咖啡因、盐酸甲基麻黄碱、马来酸氯苯那敏和愈创木酚甘油醚的含量。色谱柱为NOVA－PAKC_18柱,流动相为V（已腈）：V（0．03mol／L磷酸氢二铵）：V（0．004mol／L庚烷磺酸钠）：V（三乙胺）=12：44：43．5：0．5,并用磷酸调节pH值至3．0;检测波长220nm,柱温35℃。在此色谱条件下,各组分均获得良好分离。平均回收率为98．0％～100．3％,相对标准偏差小于1．8％。     

高效液相色谱法同时测定快安抗感冒液中5种组分的含量

 采用高效液相色谱法（HPLC）同时测定快安抗感冒液中对乙酰氨基酚、咖啡因、盐酸甲基麻黄碱、马来酸氯苯那敏和愈创木酚甘油醚的含量。色谱柱为NOVA－PAKC_18柱,流动相为V（已腈）：V（0．03mol／L磷酸氢二铵）：V（0．004mol／L庚烷磺酸钠）：V（三乙胺）=12：44：43．5：0．5,并用磷酸调节pH值至3．0;检测波长220nm,柱温35℃。在此色谱条件下,各组分均获得良好分离。平均回收率为98．0％～100．3％,相对标准偏差小于1．8％。     

高效液相法测定胃康片中呋喃唑酮、甘珀酸钠和盐酸小檗碱

 用高效液相 (HPLC)梯度洗脱法同时测定复方胃康片中呋喃唑酮、甘珀酸钠和盐酸小檗含量。使用No va PakC18柱 ,以乙腈和 0 0 2mol/L磷酸盐缓冲溶液 (pH 7 0 )为流动相 ,3,5 二硝基苯甲酸作为内标溶液 ,使用UV检测器 ,在 2 5 4nm处对样品中上述 3种成分进行测定。测定结果表明 ,呋喃唑酮在 14 1 2mg/L～ 12 70 8mg/L、甘珀酸钠在 10 0 6mg/L～ 90 5 4mg/L、盐酸小檗碱在 99 2mg/L～ 892 8mg/L时其相对峰面积 (标准品与内标的峰面积之比 )与进样质量浓度有良好的线性关系 ,其线性相关系数分别为r =0 9997,r =0 9995和r =0 9991。     

流速/溶剂双梯度反相高效液相色谱法快速同时测定复方丹参片中7种有效成分

采用整体柱建立了流速/溶剂双梯度反相高效液相色谱法快速同时测定复方丹参片中三七皂苷R1,人参皂苷Rg1,Re,Rb1,Rd,Rb2及丹参酮ⅡA 7种有效成分。通过对溶剂和流速双梯度体系的逐步优化,并应用色谱模拟软件Dry Lab,得到分离7种成分的最佳色谱条件。采用色谱柱Merck Chromolith Performance RP-18e(100 mm×4.6 mm),以乙腈-水为流动相体系,流速/溶剂双梯度洗脱,柱温30℃;片剂中的7种成分在21 min内达到基线分离;Rg1在60.60~242.40 mg/L(r=0.999 0)、丹参酮ⅡA在16.52~66.08 mg/L(r=0.999 9),其余皂苷在30.70~142.66 mg/L(r≥0.999 4)范围内具有良好的线性关系;定量下限(S/N=10)为21~124μg/kg,回收率为96.7%~100.1%。该方法能在短时间内同时分离不同极性的化合物,提高被测物的柱效,减少半峰宽和拖尾,可应用于复方丹参片中7种成分的含量分析。     

大口径毛细管气相色谱法直接测定复方氨酚苯海拉明片中的4种组分

建立了同时测定复方氨酚苯海拉明片中对乙酰氨基酚(PAR)、咖啡因(CAF)、盐酸苯海拉明(DPH)和盐酸麻黄碱(EPD)的大口径毛细管气相色谱法。无需衍生化处理,直接进样,在HP-1大口径毛细管色谱柱(10 m×0.53 mm,2.65 μm)上,上述4种药物在3 min内完全分离。PAR、CAF、DPH和EPD 4种药物的质量浓度分别为50~2400,10~500,10~500和10~500 mg/L时,药物与内标的浓度比和它们的峰面积比呈良好的线性关系(线性相关系数均高于0.999),各组分的平均回收率为98.5%~101.1%,日内相对标准偏差均小于2.2%,最低检测限为1~30 μg/L。该法快速、灵敏、准确,可为复方氨酚苯海拉明片的质量控制提供科学依据。     

在线扫集-胶束毛细管电动色谱法测定复方氨酚烷胺胶囊中的3种有效成分

以在线扫集-胶束毛细管电动色谱法(Sweeping-MEKC)测定了复方氨酚烷胺胶囊中的马来酸氯苯那敏、咖啡因和对乙酰氨基酚3种有效成分。考察了缓冲溶液pH值、SDS浓度、分离电压及进样时间等对分离效果的影响。优化条件:以未涂层熔融石英毛细管(55 cm×50μm,有效柱长35 cm)为分离柱;环境温度25℃;80 mmol/L十二烷基磺酸钠+20 mmol/L NaH2PO4(pH 2.2)+15%乙腈为缓冲体系,分离电压-20kV,进样时间60 s(H=20.0 cm),测量波长210 nm。在该条件下氯苯那敏、咖啡因和对乙酰氨基酚在25min内出峰,峰面积RSD均小于4%;线性范围分别为2.45～39.17、1.61～25.76、1.58～25.28 mg/L;检出限(S/N=3)分别达139、34、24μg/L,回收率分别为96%～101%、98%～102%、96%～102%。     

高效液相色谱法同时测定双酚伪麻干混悬剂中的盐酸伪麻黄碱和氢溴酸右美沙芬

建立了可同时测定双酚伪麻干混悬剂中盐酸伪麻黄碱和氢溴酸右美沙芬含量的反相高效液相色谱方法。样品先经甲醇溶解,过滤,然后以Lichrospher C6H6化学键合硅胶为固定相、乙腈-水-H3PO4（体积比为50∶50∶0.1,pH 2.5,内含1 g/L十二烷基硫酸钠)为流动相进行色谱分离,在220 nm处定量测定。结果表明,氢溴酸右美沙芬、盐酸伪麻黄碱的质量浓度分别为1.03~206 mg/L和5~200 mg/L时,其峰面积与质量浓度的线性关系良好;批内(n=7)测定的平均相对标准偏差（RSD）分别为1.8%和1.0%,批间(n=5)测定的RSD分别为2.2%和1.5%;对双酚伪麻干混悬剂中氢溴酸右美沙芬、盐酸伪麻黄碱测定回收率分别为100.0%~101.8%和95.7%~98.7%。该法适用于双酚伪麻干混悬剂中氢溴酸右美沙芬和盐酸伪麻黄碱的质量控制及含量测定,方法准确,操作简便。     

Simultaneous determination of acetaminophen, dextromethorphen hydrobromide and pseudoephedrine hydrochloride in a new drug formulation for cold treatment by HPLC

Summary A rapid and accurate HPLC method is described for the simultaneous determination of acetaminophen, dextromethorphen hydrobromide and pseudoephedrine hydrochloride in a new cold formulation. Chromatographic separation of the three pharmaceuticals was performed on a Hypersil CN column (150×5.0 mm, 5 μm) with a mobile phase mixture of an ion-pairing solution, methanol and acetonitrile (25:57:18, v/v), at a flow rate of 1.0 mL min⁻¹, with detection at 220 nm. Separation was complete in less than 10 min. The method was validated for linearity, accuracy, precision, limit of quantitation and robustness. Linearity, accuracy, and precision were found to be acceptable over the ranges of 2.06∼20.6 μg·mL⁻¹ for acetaminophen, 0.202∼2.02 mg·mL⁻¹ for pseudoephedrine hydrochloride and 0.042∼1.06 mg·mL⁻¹ for dextromethorphen hydrobromide.     

Simultaneous Determination of Ibuprofen and Pseudoephedrine Hydrochloride in Pharmaceutical Tablets by Reversed-Phase HPLC

Abstract

An isocratic HPLC method was developed and validated for the simultaneous determination of ibuprofen (IBU) and pseudoephedrine hydrochloride (PSE). Chromatography was carried out on an Apex phenyl column using 0.025 M acetic acid, triethylamine solution (pH 4.5) – acetonitrile (80:20, v/v) as mobile phase at a flow rate of 1 mL · min^?1. UV detection was performed at a wavelength of 210 nm. The method was validated for specificity, linearity, accuracy, precision, and was successfully applied to pharmaceutical tablets of Rhinadvil®.     

毛细管区带电泳法快速测定复方布洛芬片的有效成分

研究了用毛细管区带电泳法快速测定复方布洛芬片中布洛芬和伪麻黄碱含量的方法。在０．０２５ｍｏｌ／Ｌ的磷酸盐缓冲液（ｐＨ８．１）中，上述两组分可在３ｍｉｎ内得以完全分离，用紫外检测器在２１０ｎｍ处检测，并以外标法定量。１１次测定含有９．５ｍｇ／Ｌ盐酸伪麻黄碱和６６．７ｍｇ／Ｌ布洛芬的试样溶液，相对标准偏差为２．９％（伪麻黄碱）和１．９％（布洛芬），回收率为１０３．１％（伪麻黄碱）和９７．６％（布洛芬）。应用毛细管区带电泳法测定复方布洛芬片剂的含量，所得结果与ＨＰＬＣ法一致。     

Simultaneous determination of some active ingredients in cough and cold preparations by gas chromatography, and method validation

A simple and rapid gas chromatographic (GC) method has been developed for the simultaneous determination of combinations of acetaminophen, phenylpropanolamine hydrochloride, guaifenesin, pseudoephedrine hydrochloride, caffeine, chlorpheniramine maleate, and dextromethorphan hydrobromide in cough and cold tablets and syrups. After extraction of the analyte with alkaline ethyl acetate, 2 microL extract was injected (splitting ratio of 50:1) into a gas chromatograph equipped with a CBP1-M25-025 fused silica capillary column (25 m x 0.22 mm; film thickness, 0.25 microm). The column temperature was held at 150 degrees C for 5 min, increased to 175 degrees C at 3 degrees C/min, and increased to 270 degreesC at 10 degrees C/min. The temperatures of the flame ionization detector and injector were maintained at 300 degrees C. The GC method is inexpensive, rapid, accurate, and precise, and thus it can be used for routine analysis of tablet and syrup preparations in quality control laboratories of pharmaceutical companies.     

高效液相色谱法同时测定诺诺感冒片中扑尔敏、扑热息痛、盐酸伪麻黄碱的含量

 采用反相高效液相色谱法 ,在C18柱上以V(甲醇 )∶V(水 ) =2 5∶75的溶液为流动相 (内含 0 .0 5mol/L磷酸二氢钠 ) ,检测波长为 2 0 5nm ,同时分离测定诺诺感冒片中扑尔敏、扑热息痛、盐酸伪麻黄碱的含量。扑尔敏、扑热息痛和盐酸伪麻黄碱的检出限分别为 1.16mg/L ,0 .15mg/L和 1.82mg/L ,其相应的回收率分别为 98.35 % (n =5 ,RSD =1.6 0 % ) ,10 1.16 % (n =5 ,RSD =1.5 0 % )和 98.5 0 % (n =5 ,RSD =1.5 9% )。方法简便、快速 ,重现性好 ,适用于诺诺感冒片的质量检验分析。     

流动注射-毛细管电泳分流式电动进样歧视效应特征的研究

以碱性药物盐酸伪麻黄碱和酸性药物布洛芬为对象研究了分流式电动进样(一种用于流动注射-毛细管电泳(FI-CE)联用系统的新进样方法)歧视效应的特性。结果发现:在样品介质与运行缓冲液一致的条件下,FI-CE分流式电动进样产生的歧视效应与电动进样相似,但获得的校正曲线的线性明显优于电动进样,而与没有歧视效应的压力进样所获得的线性相似。利用这些特征提高了同时测定复方布洛芬片中少量组分盐酸伪麻黄碱和主要组分布洛芬的分析性能。在24次/h的采样频率下,盐酸伪麻黄碱的检测限为0.7 mg/L,比采用压力进样的毛细管电泳法所得的检测限低30%。连续进样11次分析含有13.1 mg/L盐酸伪麻黄碱和81.4 mg/L布洛芬的试样溶液,峰面积的相对标准偏差分别为2.8%(盐酸伪麻黄碱)和1.2%(布洛芬),明显优于采用压力进样的毛细管电泳法。用该法测定了两批复方布洛芬片中两种组分的含量,所得结果与高效液相色谱法的测定结果一致。     

Simultaneous determination of gliquidone, pioglitazone hydrochloride, and verapamil in formulation and human serum by RP-HPLC

In the present study, a reverse-phase high performance liquid chromatography method was developed, validated and applied for the simultaneous determination of gliquidone, pioglitazone hydrochloride and verapamil in tablets and human serum. Chromatographic separation was achieved on a C18 column (5 μm, 25 × 0.46 cm) with a mobile phase consisting of methanol-water-acetonitrile (80:10:10 v/v/v) with a flow rate of 0.7 mL/min and pH adjusted to 3.50 with phosphoric acid at 230 nm. Glibenclamide was used as internal standard. The experimentally derived limit of detection and limit of quantitation were determined to be 0.24, 0.93, 0.40, and 0.80, 3.11, 1.36 μg/mL for gliquidone, pioglitazone, and verapamil, respectively. There were no interfering peaks due to the excipients present in the pharmaceutical tablets. Thus, the proposed method is simple and suitable for the simultaneous analysis of active ingredients in dosage forms and human serum.     

Simultaneous Determination of Four Active Components in a Compound Formulation by Liquid Chromatography

Summary A rapid and accurate LC method is described for simultaneous determination of pseudoephedrine hydrochloride (PSE), acetaminophen (AMP), dextromethorphen hydrobromide (DEX), and diphenhydramine hydrochloride (DPH) in a compound formulation. Chromatographic separation of the four drugs was achieved on a Hypersil CN column (150 mm × 4.6 mm, 5 m particle) by use of a mobile phase comprising a mixture of 3 mM ion-pairing solution, 2% aqueous triethylamine solution, and 2 M phosphoric acid, 68:48:88 (v/v), pH 3.0, delivered at 1.0 mL min^–1. Compounds were detected at 215 nm and the run time was less than 10 min. The linearity, accuracy, and precision of the method were found to be acceptable over the concentration ranges 6.1–36.4 g mL^–1 for PSE, 65.0–390.0 g mL^–1 for AMP, 3.1–18.6 g mL^–1 for DEX, and 5.0–30.0 g mL^–1 for DPH.