升华硫的含量测定

目的 :用紫外分光光度法测定升华硫的含量。方法 :取升华硫 0 .1g,加氢氧化钾 -稀乙醇 (1→ 10 )溶液 5 ml,于80℃水浴中加热溶解 ,然后用水制成含硫 6 0～ 12 0 μg/ ml的溶液 ,在 (36 8± 2 ) nm波长处测定。结果 :升华硫在 6 0～12 0μg/ ml浓度范围内 ,线性关系良好 (r=0 .9997) ,平均回收率为 10 0 .78% (n=5 ) ,RSD=1.5 %。结论 :紫外分光光度法测定升华硫的含量操作简单 ,重现性好 ,结果准确 ,值得推广。     

HPLC法测定不同产地硫熏和烘干金银花中绿原酸含量

目的比较不同产地硫熏和烘干金银花中绿原酸含量变化,考察硫熏对金银花内在化学成分的影响。方法采用HPLC法测定绿原酸的含量,Cts柱（250mm×4．6mm,5μm）,流动相：O．4％磷酸溶液-乙腈=87：13,流速为1．0mL／min;柱温为30℃;检测波长为327nm。结果绿原酸在0．0836-0．4180斗g范围内呈良好线性关系,r=0．9999,平均回收率99．30％（RSD=0．49％）。结论硫熏后金银花绿原酸含量明显增加,不同产地之间的含量差异也较大。     

内标HPLC法测定注射用盐酸地尔硫(艹卓)含量

目的建立注射用盐酸地尔硫含量的内标高效液相色谱测定法。方法以苯甲酸苯酯作为内标,DiamonsilODS柱(4.6mm×250mm,5μm)分离,α-樟脑磺酸-醋酸钠缓冲液-乙腈-甲醇(25∶40∶35)作为流动相,柱温50℃,流速1.2mL/min,检测波长为240nm。结果盐酸地尔硫卓艹的线性范围为0.1007～0.5035mg/mL,平均回收率为97.85%,RSD=0.799%(n=9)。结论内标HPLC法测定注射用盐酸地尔硫含量,方法简便、快速和准确,可用于该制剂的质量控制。     

紫外分光光度法测定复方硫洗剂中硫的含量

目的建立测定复方硫洗剂中硫的含量的紫外分光光度法。方法取硫(升华硫)约0.1g,加氢氧化钾-稀乙醇(1→10)溶液10ml,于80℃水浴中加热溶解,用水制成每1ml含硫约100μg的溶液,在370nm(±2nm)波长处测定。结果硫在60～120μg/ml浓度范围内,线性关系良好(r=0.9995),平均回收率为101.3%(n=4),RSD=1.2%。结论紫外分光光度法测定复方硫洗剂中硫的含量结果较满意。     

HPLC法和分光光度法测定茴三硫片含量的比较

目的：运用高效液相色谱法和紫外-可见分光光度法对茴三硫片含量进行测定,并对方法学和测定结果进行比较。方法：色谱法中色谱柱Kromasil C18柱（4.6 mm×250 mm,5μm）,以甲醇-水（80∶20）为流动相,检测波长为432 nm;分光光度法于432 nm波长处以外标法测定。结果：HPLC法在32.5～250.0μg/ml浓度范围内其浓度与峰面积呈良好线性关系（r=0.999 9）,平均空白回收率为99.68%（RSD=0.46%,n=9）;分光光度法在4.096～20.480μg/ml浓度范围内其浓度与吸光度呈良好线性关系（r=0.999 4）,平均回收率为99.96%（RSD=0.44%,n=9）;三批样品的平均含量测定结果为：HPLC法分别为99.25%、99.14%和99.10%,分光光度法分别为99.46%、99.22%和99.13%。结论：两种方法均能准确测定茴三硫片的含量,可作为其质量控制的方法。     

一阶导数紫外分光光度法测定注射用头孢噻肟钠的含量

目的探讨注射用头孢噻肟钠含量测定更加简便快速的方法;方法根据其化学结构的特点,采用一阶导数光谱法测定其含量;结果测定含量准确可靠且重现性好,平均回收率为99．87％(n=5),RSD为0．67％;结论可用于头孢噻肟钠原料药中问体和注射用无茵粉末等含量测定。     

高效液相色谱法测定喹硫平缓释片含量及有关物质

目的建立能够同时、快速、准确测定喹硫平缓释片含量及有关物质的高效液相色谱(HPLC)方法。方法色谱柱为Elite Hypersil BDS-C18柱(4.6 mm×150 mm,5μm),流动相为缓冲液(pH6.8)-甲醇(37∶63),流速1 ml/min,检测波长289 nm。结果药物浓度在0.1008～1.008 mg/ml范围内,峰面积与浓度呈线性关系,r=0.9999;该方法高、中、低浓度供试品的平均回收率均在98.0%～102.0%,RSD为0.6%;重复性及中间精密度的RSD均小于2%;检测限为0.4 ng,定量限为1.2 ng。结论该方法可以同时快速、准确地测定喹硫平缓释片的含量及有关物质。     

一阶导数光谱法测定癣可净软膏中邻－己氧基苯甲酰胺含量

一阶导数光谱法测定癣可净软膏中邻－己氧基苯甲酰胺含量使用一阶导数光谱法，不经分离直接测定癣可净中邻－己氧基苯甲酰胺（后文简称癣可净）含量，方法简便、省时、快速、基质不干扰，回收率高。此法可替代传统蒸馏法。日本岛津ＵＶ－２１００型分光光度计。癣可净：广...     

硫磺制剂中升华硫的回收试验

目的 探讨硫磺制剂中升华硫回收的可行性。方法 利用硫软膏（霜）经水浴加热后升华硫沉淀而与其它成分分离，硫洗剂经过滤、乙醇洗脱而与其它成分分离。结果 升华硫的回收率分别为97．2％和95.4％。结论 回收方法简单，操作性好，可作为硫磺制剂中升华硫的回收处理方法。     

一阶导数紫外光谱法测定甘露醇注射液的含量

目的建立一阶导数光谱法测定甘露醇注射液中甘露醇含量的方法。方法采用一阶导数光谱法直接测定甘露醇注射液中甘露醇的含量,于195.4nm波长处测定振幅D值。结果甘露醇在7.9887～23.9661mg.ml-1浓度范围内振幅与浓度具有良好的线性关系;其回归方程为D=0.4153×10-2C-1.9897×10-3(r=0.9995);平均回收率99.88%、RSD=1.59%(n=5)。结论本方法操作简单、准确,可用于测定甘露醇注射液中甘露醇的含量。     

空气中二氧化硫测定方法的对比分析

目的:比较四氯汞钾-盐酸副玫瑰苯胺分光光度法和甲醛缓冲液-盐酸副玫瑰苯胺分光光度法,选择更适合高等院校学生实验中测定空气中的二氧化硫含量方法。方法:用四氯汞钾-盐酸副玫瑰苯胺分光光度法和甲醛缓冲液-盐酸副玫瑰苯胺分光光度法测定标准溶液和样本空气中的二氧化硫含量。结果:两种方法检出结果差异无统计学意义,准确度及精确度等方面结果相近。从试剂毒副作用、环境保护、实验消耗成本等方面来看,甲醛缓冲液-盐酸副玫瑰苯胺分光光度法优于四氯汞钾-盐酸副玫瑰苯胺分光光度法。结论:在高校大批量的学生实验中,宜采用甲醛盐酸副玫瑰比色法测定大气中的二氧化硫。     

Evaluation of CC2 as a Decontaminant in Various Hydrophilic and Lipophilic Formulations Against Sulphur Mustard

To evaluate CC2 (N, N' -dichloro-bis [2, 4, 6-trichlorophenyl] urea) in various hydrophilic and lipophilic formulations as a personnel decontaminant for sulphur mustard (SM). Methods Twenty percent of CC2 was prepared as a suspension or ointment with various chemical agents and its stability was evaluated by active chlorine assay. The efficacy was evaluated in mice by recording the mortality after applying 29 LD50 of SM (LD50 =8.1 mg/kg dermally) and decontaminating it after 2 min with 200 mg of the formulation.Studies were also carried out with 10% and 20% CC2 in acacia and hydroxypropyl cellulose,and the suspensions were stored in polyethylene containers. The stability of the suspensions was evaluated by active chlorine assay. The efficacy was evaluated by recording the mortality after applying 29 LD50 of SM in mice and 12 LD50 of SM in rats (LD50 = 2.4 mg/kg dermally), and decontaminating it with the formulations. LD50 by different routes and primary skin irritation test of CC2 were also carried out. Results CC2 reacted with peanut oil and neem oil, and was unstable in povidone iodine and Fuller's earth. Good stability was achieved with petroleum jelly, honey, polyvinyl pyrrolidone, calamine lotion, acacia and hydroxypropyl cellulose. Though CC2 was stable in lipophilic formulations, it did not protect the animals. The hydrophilic formulations particularly acacia and hydroxypropyl cellulose gave very good protection and was stable in the polyethylene containers for a period of 1 year. The efficacy of 20% CC2 was better than 10% CC2. The oral and dermal LD50 of CC2 was found to be above 5.0 g/kg. CC2 was also found to be nonirritant.Conclusion Twenty percent of CC2 in hydroxypropyl cellulose is better with respect to stability, efficacy and ease of decontamination. CC2 is also a safe chemical.     

硫磺乳膏和硫软膏含量测定方法的探讨

目的：改进硫磺乳膏和硫软膏含量测定的方法。方法：采用回流后直接容量分析方法分。析制剂中的硫含量。结果：改进后的方法明显优于原始的方法,可用于这两种制剂的含量测定。     

不同干燥方法百合中二氧化硫含量变化研究

目的 对不同干燥方法百合中二氧化硫含量测定,为百合的安全用药提供实验依据.方法 采用盐酸副玫瑰苯胺法,对百合中二氧化硫含量测定.结果 传统硫熏百合二氧化硫含量超标,而以煤为燃料,烘房热风烤制的百合干片亦存在二氧化硫超标的风险.结论 该二氧化硫含量测定方法可为百合的安全用药性评价提供实验依据.     

中药黄芪中硫的离子选择性电极法测定

目的:建立用硫化银离子选择性电极测定中药黄芪中微量硫的方法。方法:利用硫化银离子选择性电极法测定。结果:选择硫离子抗氧化缓冲剂(SAOB)中 NaNO3浓度为 34 mg/L,抗坏血酸浓度为 10 g/L,EDTA浓度为 10 g/L,PH=11．5±0．2为硫的最佳分析条件;采用标准曲线法和 Gran作图法的分析结果基本一致。结论:用硫化银离子选择性电极测定中药黄芪中的微量硫,操作简单、快速、准确,是一种测定中药微量硫的良好方法。     

商品天麻中二氧化硫残留量的研究

目的对不同产地规格的天麻中二氧化硫残留量进行检测,为天麻的用药安全提供实验依据。方法采用盐酸副玫瑰苯胺法对不同产地规格天麻进行二氧化硫残留量的测定。结果除个别产地规格的天麻外,所检测的天麻中二氧化硫残留量均未超标。结论本研究可对天麻的用药安全性评价提供参考。     

Protective Efficacy of Calcium Channel Blockers in Sulphur Mustard Poisoning

The present study was designed to ascertain the in vivo protective efficacy of Ca^2 -channel blockers against dermally applied sulphur mustard(SM).Male albino mice were exposed to 1.5LD50 of SM(232mg/kg0percutaneously and the control group received an equal volume of vehicle(polyethylene glycol 300),Prior to SM application,the animals were administered nifedipine and dextrose saline containing antibiotic by intraperitoneal route,The protection assessed by the mean survival time(MST)was detrermined by Dunnett‘s method.The MST was significantly increased in nifedipine treated group.Te characteristic biochemical indices of SM intoxication.i.e.lipid peroxidation and reduced glutathione(GSH)were determined in liver from animals sacrificed at 24,48 and 72 after exposure.Sm application(1 LD50)caused a reduction in GSH level which was restored in nifedipine treated grop.Sm-induced lipid peroxidation was also prevented by nifedipine administration.The protective effect of nifedipine may be related to its capacity of attenuating SM-induced lipid peroxidation and glutathione depletion.