一阶导数分光光度法测定胃炎合剂中盐酸普鲁卡因的含量

采用一阶导数分光光度法测定胃炎合剂中盐酸普鲁卡因的含量,测定波长为３０９．５ｎｍ,平均回收率为１００．０６％,ＲＳＤ＝０．７２％（ｎ＝５）本法简单,快速,准确,适用于该制剂的含量测定。     

复方益康宁片含量的测定方法

目的建立复方益康宁片中盐酸普鲁卡因和维生素B6的普通光谱系数倍率法和比值光谱测定法,以便对测定结果的准确度进行相互校验。方法根据盐酸普鲁卡因和维生素B6的普通光谱和比值光谱特征,选择适宜的测定波长对,有效地消除共存组分的干扰,实现对被测组分的准确测定。结果在选定的试验条件下,盐酸普鲁卡因和维生素B6在5.0~50.0 mg.L-1内质量浓度与吸光度线性关系良好,盐酸普鲁卡因和维生素B6的系数倍率法和比值光谱测定法的平均回收率和相对标准偏差分别为99.01%、0.41%,100.0%、0.78%,99.52%、1.16%,98.26%、0.78%。结论两法测定结果基本一致。     

一阶导数分光光度法测定盐酸普鲁卡因注射液的含量

一阶导数分光光度法测定盐酸普鲁卡因注射液的含量罗俊芳（新疆医学院第二附属医院乌鲁木齐８３００２８）盐酸普鲁卡因及其制剂的含量测定，文献报道中有永停滴定法、重氮化法、紫外分光光度法（Ｕｖ法）。采用ＵＶ法直接测定盐酸普鲁卡因的含量，其分解产物对氨基苯甲酸...     

一阶导数分光光度法测定盐酸普鲁卡因溶液的含量

目的:改进盐酸普鲁卡因溶液的含量测定方法.方法:以一阶导数光谱在308.0 nm波长处谷-零间的振幅为定量依据,测定盐酸普鲁卡因溶液的含量.结果:盐酸普鲁卡因溶液浓度在5～30μg/mL范围内与一阶导数谷-零间的振幅呈良好的线性关系,r=0.999 9,平均回收率为100.04%,RSD=0.43%.结论:一阶导数分光光度法简便、准确,可用于测定盐酸普鲁卡因溶液的含量.     

双波长比值光谱法测定盐酸普鲁卡因注射液含量

目的 :应用双波长比值光谱法测定盐酸普鲁卡因注射液含量 ,消除盐酸普鲁卡因降解产物对氨基苯甲酸的干扰。方法 :根据盐酸普鲁卡因和对氨基苯甲酸的比值光谱特征 ,选择 2 2 6nm和 2 46nm作为测定波长。结果 :盐酸普鲁卡因在 5～ 30μg·ml-1,对氨基苯甲酸在 0 .2 5～ 16 μg·ml-1浓度范围内线性关系良好 ,样品测定结果与药典方法一致 (P >0 .0 5 )。本法也可对对氨基苯甲酸进行定量。结论 :本法操作简便 ,灵敏度高 ,重现性好 ,样品测定结果准确。     

双波长紫外分光光度法测定盐酸普鲁卡因溶液的含量

目的：为准确测定盐酸普鲁卡因溶液的含量。方法;采用双波长分光光度法测定盐酸普鲁卡因溶液的含量,测定波长为２８９ｎｍ,参比波长为２５９．７ｎｍ。结果;平均回收率为１００．７％,ＲＳＤ＝１．０６％。结论：本方法能有效地消除盐酸普鲁卡因分解产物对氨基苯甲酸的干扰,准确测得其真实含量。     

用紫外分光光度法直接测定盐酸普鲁卡因注射液的含量

用紫外分光光度法直接测定盐酸普鲁卡因注射液的含量重庆市急救医疗中心（６３００１４）刘先觉，何健盐酸普鲁卡因注射液是临床上最常用的局麻药，其含量测定方法有亚硝酸钠法［１、２］、分光光度间接测定法［３］、一阶导数法［４］等，上述方法操作烦琐或终点判断不够...     

一阶导数紫外光谱法测定盐酸芬氟拉明片的含量及含量均匀度

目的：建立一阶导数紫外光谱法测定盐酸芬氟拉明片的含量及含量均匀度,以增加质量控制方法。方法：用水作溶剂,在２８０与２２０ｎｍ波长范围内测定一阶导数光谱,以一阶导数光谱在２６５ｎｍ与２６９ｎｍ波长处峰－谷间的振幅Ｄ为定量依据,用对照品对照法计算含量及含量均匀度。结果：盐酸芬氟拉明浓度在０．０５～０．４ｍｇ／ｍｌ之间与－阶导数峰－谷间的振幅呈良好的线性关系,相关系数ｒ－０．９９９９,６次的平均加样回收     

双波长测定盐酸普鲁卡因注射液含量

盐酸普鲁卡因注射液是临床上的常用药品，作者用双波长法测定其含量，结果满意。1．仪器与试药：紫外分光光度计7520型（上海分析仪器厂），盐酸普鲁卡因（99．9％）（中国药典），对氨基苯甲酸（AR），l％盐酸普鲁卡因注射液（莆田市医院制剂室）。2．测定条件的选择：精密称取盐酸普鲁卡因适量，加蒸馏水溶解制成约10pg／ml；另精密称取对氨基本甲酸适量，加无水乙醇少量使其完全溶解，加蒸馏水稀释并制成约6Pg／ml。以蒸馏水为空白，于200～350urn波长处分别绘制盐酸普鲁卡因和对氨基苯甲酸的吸收光谱。由吸收光谱可知盐酸普鲁卡因在29…     

紫外分光光度法测定盐酸普鲁卡因注射液含量

作者利用盐酸普鲁卡因的紫外吸收光谱特性，使用紫外分光光度法测定其含量，结果较满意，符合医院制剂检验要求。现报道如下。1仪器与药品紫外分光光度计（751G型，上海分析仪器厂）；盐酸普鲁卡因（吉林省辽源市制药厂），l％盐酸普鲁卡因注射液（每瓶2001111，本院制剂室生产）。2测定条件的确定2．豆吸收光谱的测定将盐酸普鲁卡因在105℃干燥至恒重，准确配制成1％的盐酸普鲁卡因水溶液作为贮备液。取贮备液适量配成10ndml的盐酸普鲁卡因水溶液，以水为空白，分别在284－296urn波长扫描，结果在29（）n波长处有最大吸收。则确定290nln为…     

Spectrophotometric determination of trifluoperazine HCl and isopropamide iodide in binary mixture using second derivative and second derivative of the ratio spectra methods

Two methods are presented for the simultaneous determination of trifluoperazine hydrochloride and isopropamide iodide in binary mixture. The first method depends on second derivative ((2)D) ultraviolet spectrophotometry, with zero crossing and peak to base measurement. The second derivative amplitudes at 270.4 and 230.2 nm were selected for the assay of trifluoperazine hydrochloride and isopropamide iodide, respectively. The second method depends on second derivative of the ratio spectra by division of the absorption spectrum of the binary mixture by a normalized spectrum of one of the components and then calculating the second derivative of the ratio spectrum. The second derivative of the ratio amplitudes at 257 and 228 nm were selected for the determination of trifluoperazine hydrochloride and isopropamide iodide, respectively. The two proposed methods were successfully applied to the determination of the two drugs in laboratory prepared mixtures and in commercial tablets.     

紫外分光光度法测定复方庆大霉素普鲁卡因口服溶液中盐酸普鲁卡因的含量

目的建立复方庆大霉素普鲁卡因口服溶液中盐酸普鲁卡因的含量测定方法。方法采用紫外分光光度法,测定波长为290nm,并与永停滴定法进行比较。结果盐酸普鲁卡因线性范围为2.390～9.560μg.mL-1（r=0.999 7）;平均回收率为101.4%（RSD=0.7%）。结论本测定方法简便、快速、准确,可作为复方庆大霉素普鲁卡因口服溶液的含量测定。     

考察盐酸普鲁卡因注射液稳定性的3种方法比较

目的:比较考察盐酸普鲁卡因注射液稳定性及有效期不同方法的优越性。方法:采用双波长法测定盐酸普鲁卡因注射液的含量,分别用经典恒温法、初均速法和长期试验法测定分解10%和5%盐酸普鲁卡因的时间,以考察稳定性及确定有效期。结果:盐酸普鲁卡因的检测浓度线性范围为1.5×10-5～2.5×10-5g.mL-1(r=0.9999);平均回收率为99.78%(RSD=0.63%);其含量随温度升高和时间延长逐渐下降。结论:3种方法测得该制剂的稳定性和有效期基本一致,初均速法最为简便易行。     

匹咖卡因注射液质量控制研究

目的制订匹咖卡因注射液的质量控制标准。方法采用中和法测定盐酸普鲁卡因的含量;用四苯硼钠剩余滴定法测定盐酸普鲁卡因和氨基比林的总量,经计算可得氨基比林的含量;用一阶导数光谱法测定安钠咖的含量。结果各成分的平均回收率为100.1%~103.4%之间,RSD值在0.34%~0.59%(n=5)之间。结论对于复方制剂来说,本法简便可行,重现性好,可用于该制剂的质量控制。     

Application of two chemometric methods for the determination of imipramine, amitriptyline and perphenazine in content uniformity and drug dissolution studies

Double-divisor spectra derivative and partial least squares methods were developed for content uniformity and dissolution tests in binary or ternary mixtures. The simultaneous determinations of perphenazine (PER) combined with amitriptyline hydrochloride (AMI) and/or imipramine hydrochloride (IMI) have been accomplished using the information of the absorption spectra of appropriate solutions. The double-divisor method is based on the use of the first derivative of the ratio spectrum obtained by dividing the absorption spectrum of the ternary mixture PER-AMI-IMI by a standard spectrum resulted from the addition of two of the three analytes in equal concentrations. The concentration of each component is then determined from their respective calibration graphs established by measuring the ratio derivative analytical signal at a specific wavelength. In this method, the linear determination ranges were of 3.65-18.24 microg/mL for PER, 4.32-21.60 microg/mL for AMI, and 4.83-24.19 microg/mL for IMI. The results were compared with those obtained by partial least squares multivariate calibration (PLS) method pre-treated by a wavelet compression-orthogonal signal correction (W-OSC) filter in zero-order derivative spectra. The calibration model was evaluated by internal validation (cross-validation) and by external validation over synthetic mixtures, content uniformity and dissolution tests. According to the dissolution profile test more than 95% of the three substances were dissolved within 10 min. The results from both techniques were statistically compared with each other and can be satisfactorily used for quantitative analysis and dissolution tests of multicomponent tablets.     

一阶导数光谱法测定匹咖卡因注射液中安钠咖的含量

目的：测定匹咖卡因注射液中安钠咖的含量。方法：用四苯硼钠将注射液中普鲁卡因和氨基比林沉淀过滤分离后,以２８７ｎｍ为一阶导数光谱的测定波长。结果：平均回收率为１０１．３％,ＲＳＤ为０．６％。结论：方法快速、简便,结果满意。     

Spectrophotometric determination of benazepril hydrochloride and hydrochlorothiazide in binary mixture using second derivative, second derivative of the ratio spectra and chemometric methods

Different spectrophotometric methods are presented for the simultaneous determination of benazepril hydrochloride and hydrochlorothiazide in pharmaceutical tablets. The first method depends on second derivative (2D) ultraviolet spectrophotometry, with zero crossing and peak to base measurement. The second derivative amplitudes at 214.8 and 227.4 nm were selected for the assay of benazepril hydrochloride and hydrochlorothiazide, respectively. The second method depends on second derivative of the ratio spectra by measurement of the amplitudes at 241.2 and 273.2 nm for benazepril hydrochloride and hydrochlorothiazide, respectively. Chemometric methods, classical least squares and principal component regression, were applied to analyze the mixture. Both the chemometric methods were applied to the zero and first order spectra of the mixture. The proposed methods were successfully applied for the determination of the two drugs in laboratory prepared mixtures and in commercial tablets.     

Quantitative analysis of chlorpheniramine maleate and phenylephrine hydrochloride in nasal drops by differential-derivative spectrophotometric, zero-crossing first derivative UV spectrophotometric and absorbance ratio methods

Three simple, rapid and accurate methods are described for the simultaneous determination of chlorpheniramine maleate and phenylephrine hydrochloride in two component mixtures. The first method comprised of measurement of difference absorptivities derivatized in first order of a nasal drops in 0.1 N NaOH relative to that of an equimolar solution in methanol at wavelengths of 271.6 and 250.2 nm, respectively. The second method, zero-crossing derivative spectrophotometry, is based on recording the first derivative curves and determining each component using the zero-crossing technique. Using first derivative spectrophotometry, the amplitudes in the first derivative spectra at 246.5 and 238.6 nm were selected to simultaneously determine chlorpheniramine maleate and phenylephrine hydrochloride in the mixture. The presence of identical zero-crossing points for pure drugs and nasal drop solutions established the non-interference of the excipients in the absorption at these wavelengths. Absorbance ratio method was also developed for a comparison method. The proposed procedures were successfully applied to the determination of chlorpheniramine maleate and phenylephrine hydrochloride in nasal drops, with a high percentage of recovery, good accuracy and precision.     

Simultaneous determination of hydrochlorothiazide and amiloride hydrochloride by ratio spectra derivative spectrophotometry and high-performance liquid chromatography

Rapid, precise, accurate and specific ratio spectra derivative spectrophotometry and high-performance liquid chromatographic procedures were described for the simultaneous determination of hydrochlorothiazide and amiloride hydrochloride in combined pharmaceutical dosage forms. For the first method, ratio spectra derivative spectrophotometry, the signals were measured at 285.7 nm for hydrochlorothiazide and at 302.5 nm for amiloride hydrochloride in the mixture, in the first derivative of the ratio spectra. The second method is based on high-performance liquid chromatography (HPLC) on LiChrosorb RP-C18 column (5 microm, 20 cm x 4.6 mm) using 0.025 M orthophosphoric acid (adjusted to pH 3.0 with triethylamine (TEA)), acetonitrile (84:16 v/v) as a mobile phase at a flow rate of 1.2 ml/min(-1). Detection was carried out using a UV detector at 278.0 nm. Commercial sugar-coated and laboratory-prepared mixtures containing both drugs in different proportions were assayed using the developed methods.