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2019年, 第49卷, 第12期　刊出日期：2019-12-22 上一期    下一期

基础研究

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碱金属反离子对聚乙烯吡咯烷酮-十二烷基硫酸盐复合作用的影响 Influence of alkali metal counterions on the complexation of polyvinylpyrrolidone with dodecyl sulfates 陈苗苗,冯瑞沁,方云 2019 (12):  769-773.  doi: 10.3969/j.issn.1001-1803.2019.12.001 摘要 ( 256 )   HTML ( 119 )   PDF(1666KB) ( 376 )   研究了十二烷基硫酸锂、钠和钾盐分别与聚乙烯吡咯烷酮（PVP）的复合作用,用表面张力法、电导率法和毛细管电泳法（CE）考察不同水化半径的碱金属反离子对PVP-十二烷基硫酸盐的拟聚电解质类型和电解质强度的影响。表面张力和电导率的实验结果表明,当碱金属反离子水化半径减小时（Li +>Na +>K +）,PVP-十二烷基硫酸盐间的缔合量随之增大,且参与反离子架桥作用的反离子数增加;CE实验结果表明,PVP-十二烷基硫酸盐的复合作用形成拟聚阴离子,不会随碱金属反离子水化半径增大而改变拟聚电解质类型,且其拟聚阴离子的电解质强度将随之减弱。 The complexation between polyvinylpyrrolidone（PVP）and dodecyl sulfates with different alkali metal counterions（Li +, Na + and K +）was studied by tensiometry, conductometry and capillary electrophoresis（CE）. The effects of these alkali metal counterions with different hydration radii on the pseudo-polyelectrolyte types and electrolyte strength of PVP-dodecyl sulfate complexes were also investigated. The experimental results of tensiometry and conductometry showed that, the association between PVP and dodecyl sulfates and the bridging degree of counterions both increase with the decrease of hydration radii of alkali metal counterions（Li +>Na +>K +）. The CE results showed that, the complexation between PVP and dodecyl sulfates has formed pseudo-polyanions no matter what alkali metal counterion is, but the polyanion properties become strong with the decreasing hydration radii of alkali metal counterions. 数据和表 | 参考文献 | 相关文章 | 计量指标

科技讲座

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表面活性剂-纳米颗粒相互作用与智能体系的构建（VI）相同电荷表面活性剂-纳米颗粒相互作用（ii）—— 新型乳状液的稳定机制和智能化 Interactions between surfactants and nanoparticles and the construction of smart systems（VI）Interactions between like-charged nanoparticles and surfactants（ii）Stabilization mechanism and intelligentialization of the novel emulsions 张婉晴,许茂东,蒋建中,崔正刚 2019 (12):  774-782.  doi: 10.3969/j.issn.1001-1803.2019.12.002 摘要 ( 320 )   HTML ( 12 )   PDF(3691KB) ( 308 )   超低浓度的离子型表面活性剂和带相同电荷的纳米颗粒能够协同稳定一种新型O/W型乳状液,其中微量表面活性剂吸附于油/水界面,使油滴表面带电,而纳米颗粒分布于连续相水膜中,增加了油滴间的距离,进而显著降低了油滴间的范德华引力作用。纳米颗粒和油滴都存在一个临界Zeta电位,高于这一Zeta电位,才能确保乳状液的稳定。对纳米颗粒而言,这一临界Zeta电位约为±18 mV,而油滴的临界Zeta电位尚待确定。使用CO2/N2开关型表面活性剂DDMA与纳米氧化铝颗粒组合,可以获得开关性新型乳状液。向乳状液中通入N2,使DDMA转变为中性的烷基脒,即能解除其表面活性和油滴的Zeta电位,导致乳状液破乳;而向体系中通入CO2使DDMA转变为阳离子,则油滴的Zeta电位恢复,又能获得稳定的新型乳状液。对用常规离子型表面活性剂构建的新型乳状液,加入带相反电荷的离子型表面活性剂,与体系中已有的离子型表面活性剂形成离子对,即可消除油滴的Zeta电位,导致乳状液破乳,而再加入微量原有的离子型表面活性剂,则油滴的Zeta电位恢复,又能得到稳定的新型乳状液。由此得到刺激-响应性新型乳状液。本讲座将介绍有关最新的研究进展。 Ionic surfactants and same-charged inorganic nanoparticles can co-stabilize novel O/W emulsions both at extremely low concentration, in which trace amount of the ionic surfactants adsorb at the oil/water interface to endow droplets with surface charge whereas the charged nanoparticles disperse in the aqueous lamellae（continuous phase）which increases the distance between droplets and thus significantly reduces the wan der Waals attraction between droplets. There is a critical Zeta potential for both particles and droplets, above which stable emulsions can be obtained. For nanoparticles the critical Zeta potential is approximately ±18 mV, whereas for droplets it still needs to be determined. Switchable novel emulsion can be obtained by using a CO2/N2switchable surfactant DDMA in combination with positively charged alumina nanoparticles. By bubbling N2 into the emulsion, the DDMA is transformed from cationic to neutral form, and the surface activity of DDMA and the Zeta potential of droplets are eliminated, leading to demulsification. In contrast, by bubbling CO2 into the system to turn DDMA back to cationic form, the Zeta potential of droplets is recovered and the emulsion is re-stabilized. For the novel emulsions co-stabilized by conventional ionic surfactants and same-charged nanoparticles, they can be made stimuli-responsive. By adding an ionic surfactant charged oppositely to the ionic surfactant already present in the emulsion, ionic pairs are formed to eliminate the Zeta potential of droplets, leading to demulsification, whereas by further addition of extra original ionic surfactant, the Zeta potential of droplets is recovered and the emulsion is re-stabilized. This lecture will discuss the most recent research progress relevant. 数据和表 | 参考文献 | 相关文章 | 计量指标

开发与应用

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乳清蛋白-鼠李糖脂混合生物乳化剂的性能研究 Study of the performance of mixed whey protein-rhamnolipid bioemulsifier 张国瑞,宋永亭,包木太,汪卫东,李希明 2019 (12):  783-789.  doi: 10.3969/j.issn.1001-1803.2019.12.003 摘要 ( 257 )   HTML ( 6 )   PDF(2126KB) ( 344 )   制备了不同比例组合的乳清蛋白和鼠李糖脂混合体系,对其乳化性质（0 #柴油为底物烃）进行了研究。结果表明：同等质量浓度下,混合物表现出比单独乳清蛋白和鼠李糖脂更好的乳化活性,说明二者有很好的乳化协同作用,鼠李糖脂组分的增加还可以有效降低乳状液的平均粒径。研究了不同环境条件下混合体系的乳化活性,结果显示混合物在中性及碱性条件下拥有显著提高的乳化活性;乳清蛋白和鼠李糖脂质量比为2∶1和1∶1的混合物在1.5%和2.5%的氯化钠含量下也表现出显著提高的乳化活性;同时混合物对3种不同的底物烃均能有效乳化。对Zeta电位和界面性质进行了研究,发现相比于单一组分,混合物胶束粒子的负Zeta电势减弱,而少量鼠李糖脂的加入即可显著提高混合物的界面活性以及润湿性。 The mixed systems of whey protein and rhamnolipid at different ratios were prepared, and their emulsifying properties（0 # diesel as a substrate hydrocarbon）were studied. The results showed that, at the same mass concentration, the mixture showed better emulsifying activity than pure whey protein or rhamnolipid, indicative of good emulsification synergism. The increase of rhamnolipid component therein can also effectively reduce the mean particle size of the emulsion. The emulsifying activity of the mixture under different conditions was studied, which showed that the mixture has significantly improved emulsifying activity under neutral and alkaline conditions; the mixtures of whey protein and rhamnolipid with mass ratio of 2∶1 and 1∶1 also show significantly improved emulsifying activity at 1.5% and 2.5% NaCl contents; Moreover, the mixture is effective in the emulsification of three different substrate hydrocarbons. The Zeta potential and interfacial properties are investigated. It was found that the negative Zeta potential of the mixed micelle particles is weakened compared with the individual components, and the addition of a small amount of rhamnolipid significantly increases the interfacial activity and wettability of the mixture. 数据和表 | 参考文献 | 相关文章 | 计量指标

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ASP三元复合驱油体系在长岩心中的运移规律 Study on the migration of ASP flooding system in long core 毕艳昌,孙灵辉,萧汉敏,顾兆斌,赵红运,岳青 2019 (12):  790-794.  doi: 10.3969/j.issn.1001-1803.2019.12.004 摘要 ( 248 )   HTML ( 5 )   PDF(1713KB) ( 295 )   为研究大庆油田ASP（碱、表面活性剂、聚合物）三元复合驱油体系在地层中的运移规律,制备了渗透率为479 mD,长度为6 m的填砂管模型,根据现场提供的复合体系配方在45 ℃环境下进行恒温驱替,分析采出液的化学剂浓度、黏度、界面张力的变化。结果表明,在三元驱阶段,复合体系的注入程度越高,含水率越低,采收率越高,ASP注入开始1.5 PV后复合体系驱油效果彻底失效。复合体系的化学剂浓度和黏度的损失程度为黏度（6倍）>表面活性剂（4倍）>聚合物（3倍）>碱（2倍）,由于黏度的损失过大,复合体系在后1/12井距失去了控制流度比的作用。碱的存在使得超低界面张力（0.001 mN/m）可以维持前1/2井距,低界面张力（0.01 mN/m）可以维持后1/2井距。 To study the migration of ASP（alkali/surfactant/polymer）flooding system in the formation in Daqing Oilfield, a sand filling tube model with a permeability of 479 mD and a length of 6 m was prepared, according to the practical formula applied in oilfield, isothermal displacement was carried out at 45 ℃. The concentration, viscosity and interfacial tension of the produced fluid were analyzed. The results showed that in the ternary flooding stage, the higher the injection degree was, the lower the water content and the higher the recovery factor would be; the flooding effect of the system completely failed after ASP started 1.5 PV. The loss degrees of chemical agent concentration and viscosity in the system were as follows: viscosity（6 times） > surfactant（4 times） > polymer（3 times）> alkali（2 times）. Because of the excessive loss of viscosity, the system lost the function of controlling the fluidity ratio in the latter 1/12 well spacing. Because of the presence of alkali, ultralow interfacial tension（0.001 mN/m）could be maintained for the first 1/2 well spacing, while low interfacial tension（0.01 mN/m）could be maintained for the rear 1/2 well spacing. 数据和表 | 参考文献 | 相关文章 | 计量指标

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微乳型果蔬清洗剂去除农药残留的研究 Study on removal of pesticide residues by microemulsion fruit and vegetable detergents 刘冬,张云,商朦,倪鑫炯,曹玉华 2019 (12):  795-800.  doi: 10.3969/j.issn.1001-1803.2019.12.005 摘要 ( 318 )   HTML ( 6 )   PDF(1832KB) ( 569 )   研究了微乳型果蔬清洗剂对蔬菜表面农药残留的清除效果。向青菜表面喷洒含有乙酰甲胺磷、氧乐果、敌百虫、氯氟氰菊酯的混合农药,并于喷洒后第3天、7天、14天、21天分别进行采集,再采用微乳型果蔬清洗剂、市售去除农残果蔬专用清洗剂和自来水分别清洗。测定青菜中4种农药的残留量,评估3种清洗剂对不同农药、喷洒农药后不同采收时间农残的清除效果。研究结果表明：随着喷洒农药采收时间的延长,青菜中4种农残均有不同程度的降低;但清洗效率明显下降。微乳型果蔬清洗剂对4种农药均有很好的去除效果,对喷洒后第21天采收的青菜中4种农药的平均去除率达63.90%,而市售果蔬清洗剂和自来水的平均去除率仅为44.88%和20.76%。鉴于微乳型果蔬清洗剂良好的增溶性和渗透性,适合于蔬果表皮内部以及疏水性农药残留的去除。 The removal effect of microemulusion fruit and vegetable detergents on pesticide residue on vegetable surface was studied. The mixed pesticides containing acephate, omethoate, trichlorfon and cyhalothrin were sprayed on the surface of green vegetables. Then, the vegetables were collected on the 3rd, 7th, 14th, and 21th days after spraying, and washed with the microemulsion detergent, commercially available vegetable and fruit detergent for removing pesticide residue and tap water, respectively. The residues of four pesticides in green vegetable samples were determined. The removal effects of the three cleaning agents on different pesticides and pesticides at different harvest time were evaluated. It is found that with the extension of the harvest time of spraying pesticide, the four pesticide residues in green vegetables decreased to varying degrees, but the cleaning efficiency decreased significantly. Microemulsion fruit and vegetable detergent have good removal effect on all of the four pesticides. The average removal rate of four pesticides in vegetables harvested on the 21st day after spraying is 63.90%, while the average removal rate of commercial vegetable and fruit detergent and tap water is only 44.88% and 20.76%, respectively. Owing to highly hydrophobic solubility and penetrability, the microemulsion detergent was suitable for removal of the highly hydrophobic pesticides and those penetrated into the organic outermost cuticle layer. In view of the good solubilization and permeability of the microemulsion fruit and vegetable detergents, it is suitable for the removal of hydrophobic pesticide residues in the surface of vegetables and fruits. 数据和表 | 参考文献 | 相关文章 | 计量指标

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改性SOD酶纳米颗粒稳定的Pickering乳液及其抗氧化性能研究 Pickering emulsion stabilized by modified SOD nanoparticles and its antioxidation property 李飞,彭志,王伟浩,孙鹤家,郭婷,孟涛 2019 (12):  801-804.  doi: 10.3969/j.issn.1001-1803.2019.12.006 摘要 ( 339 )   HTML ( 13 )   PDF(3334KB) ( 288 )   利用戊二醛修饰制备出了颗粒大小及油水浸润性适中的超氧化物歧化酶（SOD）纳米颗粒,并对改性SOD纳米颗粒进行扫描电镜（SEM）、浸润性、稳定乳液效果及酶活性表征。结果表明,改性后的SOD纳米颗粒具有颗粒大小均一、形貌规整、浸润性适中等特点,所制备的Pickering乳液能长时间保持稳定,且具有较好的抗氧化性能。 The SOD（superoxide dismutase） nanoparticles with good particle size and wettability were prepared by modification with glutaraldehyde. The modified SOD nanoparticles were characterized by scanning electron microscopy（SEM）, contact angle, emulsion stability and enzyme activity. The results show that the modified SOD nanoparticles exhibit uniform particle size, regular morphology and good wettability. The Pickering emulsion stabilized by the modified SOD nanoparticles has high stability and antioxidation property. 数据和表 | 参考文献 | 相关文章 | 计量指标

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氯化钠对包覆维生素C多重乳液的影响 Effects of sodium chloride on the multiple emulsion encapsulating Vitamin C 陈凯丽,刘冬,张云,倪鑫炯,曹玉华,曹光群 2019 (12):  805-810.  doi: 10.3969/j.issn.1001-1803.2019.12.007 摘要 ( 383 )   HTML ( 13 )   PDF(2205KB) ( 453 )   以辛酸/癸酸甘油三酯（GTCC）为油相,月桂基PEG-9聚二甲基硅氧乙基聚二甲基硅氧烷为油溶性乳化剂、双亲性无规共聚物为水溶性乳化剂,两步法制备了水包油包水（W1/O/W2）型多重乳液,并将维生素C包覆于内水相（W1）中,通过NaCl调节内外水相渗透压提高多重乳液稳定性。考察了NaCl加入量对相界面张力、乳液粒径及黏度的影响,通过显微镜微观拍照和乳液外观评价乳液稳定性。实验表明,W1相添加NaCl可显著降低W1/O界面张力,减小乳液粒径,增加乳液黏度;外水相（W2）添加NaCl超过0.2%时,O/W2界面张力显著增大;与NaCl相比,维生素C对降低W1/O界面张力的能力较小。控制W1/O/W2乳液中内外水相NaCl含量均为0.2%,考察W1中维生素C添加量对多重乳液微观及外观影响。当维生素C包覆量为0.75%时,多重乳液粒径均匀且外观稳定。 Water-in-oil-in-water（W1/O/W2）multiple emulsion was prepared by two-step method with caprylic/capric triglyceride as oil phase, lauryl PEG-9 polydimethylsiloxyethyl dimethicone as oleophilic emulsifier and the amphiphilic random copolymer as hydrophilic emulsifier. The multiple emulsion was used to encapsulate Vitamin C in internal aqueous phase（W1）. Sodium chloride（NaCl）regulated the osmotic pressure between the internal and external aqueous phases to improve the stability of the multiple emulsion. The effects of the amount of NaCl on the interfacial tension, droplet size of emulsion and viscosity were investigated. The stability of the multiple emulsion was evaluated by optical microscope and emulsion appearance. The results show that, the addition of NaCl in W1 lead to significant decrease of W1/O interfacial tension, smaller size of the emulsion droplets, and higher viscosity of the emulsion. The interfacial tension at O/W2 interface would be obviously increased if the content of NaCl in W2 is higher than 0.2%. In contrast to NaCl, the addition of Vitamin C merely slightly decrease the interfacial tension between W1/O interface. Thus, in this work the amount of NaCl is kept at 0.2% both in internal and external aqueous phases of W1/O/W2, and the effects of Vitamin C concentration in W1 on the microscopic states and appearance of the multiple emulsion are investigated. A homogeneous and stable multiple emulsion could be obtained with the encapsulation of Vitamin C at 0.75%. 数据和表 | 参考文献 | 相关文章 | 计量指标

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界面聚合法制备聚脲蜂蜡相变微胶囊 Microencapsulation of beeswax as a phase change material in polyurea by interfacial polymerization 倪卓,陈书田,朱进普 2019 (12):  811-816.  doi: 10.3969/j.issn.1001-1803.2019.12.008 摘要 ( 432 )   HTML ( 7 )   PDF(3441KB) ( 292 )   以蜂蜡为微胶囊芯材,以甲苯-2,4-二异氰酸酯（TDI）和乙二胺（EDA）为单体,以辛基酚聚氧乙烯醚（OP-10）为乳化剂,采用界面聚合法制备聚脲蜂蜡相变微胶囊。探讨乳化剂用量、单体摩尔比和反应温度等因素对聚脲蜂蜡相变微胶囊的影响,并表征其包覆效果。结果表明,在乳化剂质量分数为2.40%,n（TDI）∶n（EDA）=1.2∶1.0,反应温度为70 ℃的条件下制备的聚脲蜂蜡相变微胶囊的平均粒径为70.3 μm,耐热温度为210 ℃,相变温度为41 ℃,相变潜热为59.55 J/g。 Polyurea microcapsules containing beeswax as the core material were prepared by interfacial polymerization. Toluene diisocyanate （TDI） and ethylene diamine （EDA） were used as monomers and octylphenol polyoxyethylene （10） ether （OP-10） was used as emulsifier. The effects of emulsifier dosage, molar ratio of monomers and reaction temperature on polyurea/beeswax phase change microcapsules were studied. The effectiveness of microencapsulation was also analyzed. The results showed that when the emulsifier mass fraction is 2.40%, n（TDI）∶n（EDA） is 1.2∶1.0 and the reaction temperature is 70 ℃, the average particle size of polyurea/beeswax microcapsules prepared under such condition is 70.3 μm, while the heat-resistance temperature, phase change temperature and latent heat of phase change are 210 ℃, 41 ℃, and 59.55 J/g, respectively. 数据和表 | 参考文献 | 相关文章 | 计量指标

专论与综述

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非水相溶致液晶形成的研究进展 Progress in the formation of lyotropic liquid crystals in non-aqueous solvent 奚琪,燕永利,张阳 2019 (12):  817-823.  doi: 10.3969/j.issn.1001-1803.2019.12.009 摘要 ( 627 )   HTML ( 14 )   PDF(2868KB) ( 680 )   随着溶致液晶在生物仿生、功能材料、化学工业、医药学、石油工业、日用化妆品等领域的应用,人们对构建非水相溶致液晶的研究也日益深入。通过介绍表面活性剂聚集体溶致液晶形成的基础理论,综述了表面活性剂在直链醇（甘油、乙二醇等）、有机胺化合物（甲酰胺、N-甲基甲酰胺等）、离子液体等非水溶剂中溶致液晶的形成、表征手段和应用,并对该领域的发展趋势进行了展望。 With wide applications of lyotropic liquid crystals in the fields of bionics, functional materials, chemical industry, medicine, petroleum industry, daily cosmetics, etc., the research of constructing non-aqueous phase liquid crystals attracts more attention recently. Based on the basic theory of the formation of the lyotropic liquid crystals of surfactant aggregates, the formation, characterization and application of the lyotropic liquid crystals of surfactants in non-aqueous solvents such as straight chain alcohols （glycerin, ethylene glycol, etc.）, organic amines （formamide, N-methylformamide, etc.）, ionic liquids, etc. are reviewed, and the development trend in this field is prospected. 数据和表 | 参考文献 | 相关文章 | 计量指标

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化妆品透皮吸收试验方法概述 An overview of skin penetration test methods for cosmetics 宋艳青,盘瑶,赵华 2019 (12):  824-829.  doi: 10.3969/j.issn.1001-1803.2019.12.010 摘要 ( 1711 )   HTML ( 93 )   PDF(1895KB) ( 2694 )   概述了化妆品透皮吸收的途径和理论,介绍了扩散池法、胶带粘贴技术和光谱方法等体外和体内的透皮吸收的评价方法,提供了评价化妆品透皮吸收能力的新思路,展望了化妆品透皮吸收评价方法的发展趋势。 The approaches and theories of skin penetration of cosmetics were summarized. The in vitro and in vivo of transdermal absorption, such as diffusion cell methods, tape stripping and spectroscopy were introduced. A new idea for evaluating the transdermal absorption capacity of cosmetics was provided and the development trend of the cosmetics skin penetration evaluation methods was proposed. 数据和表 | 参考文献 | 相关文章 | 计量指标

分析与检测

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高效液相色谱法分析脂肪醇聚氧乙烯醚衍生系列表面活性剂产品中的醇醚含量 Analysis of fatty alcohol ethoxylates in the serial products of fatty alcohol ethoxylate derived surfactants by HPLC 张军,杨秀全,周媛 2019 (12):  830-834.  doi: 10.3969/j.issn.1001-1803.2019.12.011 摘要 ( 541 )   HTML ( 10 )   PDF(1663KB) ( 490 )   建立了统一的液相色谱分析方法来测定基于醇醚衍生的系列表面活性剂产品中的醇醚含量,产品类别包括醇醚硫酸酯盐、醇醚糖苷、醇醚羧酸盐、醇醚柠檬酸酯盐。采用C18色谱柱,甲醇-水梯度洗脱,使用流动相添加剂使醇醚色谱峰与干扰峰相互分离,蒸发光散射检测器检测。结果表明,相同碳链醇醚的回归方程系数接近,R 2皆大于0.999;方法精密度良好;测定各产品的平均回收率皆大于95%,准确度良好;方法在测定醇醚含量为0.5%~30%的样品时均显示出良好的适应性。醇醚含量随品种和样品的不同存在明显差异,测定方法同样适用于复配型产品。 A uniform HPLC method was established for the determination of the fatty alcohol ethoxylates in the products of surfactants derived thereof. The surfactant products under investigation were alcohol ether sulfate, alkylethoxyglucoside, alcohol ether carboxylate, and fatty alcohol ether citrate monoester salt. The column was C18 column and the gradient elution was performed with methanol-water solvent. The chromatographic peaks of fatty alcohol ethoxylates were separated from interference peaks by adding modification agent in the mobile phase. Evaporative light scattering detection (ELSD) was used. The results showed that the coefficients of the regression equations of fatty alcohol ethoxylates with the same alkyl group were close. The method showed good precision with the R 2 being greater than 0.999; the method also showed good accuracy with the average recovery rate of each product being more than 95%. The method showed good adaptability for the samples with 0.5%-30% fatty alcohol ethoxylates. The method was also applicable to mixed products with different contents of fatty alcohol ethoxylates. 数据和表 | 参考文献 | 相关文章 | 计量指标

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HPLC法同时测定化妆品中补骨脂素、异补骨脂素、新补骨脂异黄酮和补骨脂二氢黄酮含量 HPLC determination of psoralen, lsopsoralen, neobavaisoflavone and bavachin in cosmetics 范菲,李静静,陆帮美 2019 (12):  835-838.  doi: 10.3969/j.issn.1001-1803.2019.12.012 摘要 ( 318 )   HTML ( 7 )   PDF(1610KB) ( 372 )   采用高效液相色谱法研究了化妆品中补骨脂素、异补骨脂素、新补骨脂异黄酮和补骨脂二氢黄酮的含量测定,得到了补骨脂素、异补骨脂素、新补骨脂异黄酮和补骨脂二氢黄酮分别在0.109 1~21.814 4 mg/L、0.106 7~21.332 8 mg/L、0.108 6~21.712 8 mg/L、0.112 3~22.464 4 mg/L范围内线性关系良好,平均回收率为94.78%~104.74%,RSD均小于5%。 An analytical method for the simultaneous determination of psoralen, lsopsoralen, neobavaisoflavone and bavachin in cosmetics by HPLC were developed. The linear relationships are good in the ranges of 0.109 1-21.814 4 mg/L, 0.106 7-21.332 8 mg/L, 0.108 6-21.712 8 mg/L and 0.112 3-22.464 4 mg/L for the four components, respectively. The average recoveries are 94.78%-104.74% with the RSD less than 5%. 数据和表 | 参考文献 | 相关文章 | 计量指标